##### Table of Contents





UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549





FORM 10-Q







|x | Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
|- | ---------------------------------------------------------------------------------------

For the quarterly period ended March 31, 2011



| ̈ | Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
|- | ----------------------------------------------------------------------------------------

For the Transition Period From 
to .

Commission file number 001-32336 (Digital Realty Trust, Inc.)

000-54023 (Digital Realty Trust, L.P.)





DIGITAL REALTY TRUST, INC.

DIGITAL REALTY TRUST, L.P.

(Exact name of registrant as specified in its
charter)







|                                                                            |  |                                     
|--------------------------------------------------------------------------- |  | ------------------------------------
|Maryland (Digital Realty Trust, Inc.)
Maryland (Digital Realty Trust, L.P.) |  | 26-0081711 20-2402955               
|(State or other jurisdiction of
incorporation or organization)              |  | (IRS employer identification number)
|                                                                            | 
|560 Mission Street, Suite 2900
San Francisco, CA                            |  | 94105                               
|(Address of principal executive offices)                                    |  | (Zip Code)                          

(415)
738-6500

(Registrants telephone number, including area code)





Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or
for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.



|                           |  |                   
|-------------------------- |  | ------------------
|Digital Realty Trust, Inc. |  | Yes  x      No  
 ̈
|Digital Realty Trust, L.P. |  | Yes  x      No  
 ̈

Indicate by check mark whether the registrant has submitted electronically and
posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the
registrant was required to submit and post such files).



|                           |  |                   
|-------------------------- |  | ------------------
|Digital Realty Trust, Inc. |  | Yes  x      No  
 ̈
|Digital Realty Trust, L.P. |  | Yes   ̈      No  
 ̈

Indicate by check mark whether the registrant is a large accelerated filer, an
accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of large accelerated filer, accelerated filer and smaller reporting company in Rule 12b-2 of the Exchange Act.

Digital Realty Trust, Inc.:

|                        |  |                                                  |  |                           |  |  
|----------------------- |  | ------------------------------------------------ |  | ------------------------- |  | -
|Large accelerated filer |  | x                                                |  | Accelerated filer         |  |  ̈
|                        |  |                                                  | 
|Non-accelerated filer   |  |  ̈  (Do not check if a smaller reporting company) |  | Smaller reporting company |  |  ̈

Digital
Realty Trust, L.P.:

|                        |  |                                                  |  |                           |  |  
|----------------------- |  | ------------------------------------------------ |  | ------------------------- |  | -
|Large accelerated filer |  |  ̈                                                |  | Accelerated filer         |  |  ̈
|                        |  |                                                  | 
|Non-accelerated filer   |  | x  (Do not check if a smaller reporting company) |  | Smaller reporting company |  |  ̈

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).



|                           |  |                 
|-------------------------- |  | ----------------
|Digital Realty Trust, Inc. |  | Yes   ̈    No  
x
|Digital Realty Trust, L.P. |  | Yes   ̈    No  
x

Indicate the number of shares outstanding of each of the issuers classes
of common stock, as of the latest practicable date.

Digital Realty Trust, Inc.:



|                                       |  |                           
|-------------------------------------- |  | --------------------------
|Class                                  |  | Outstanding at May
3, 2011
|Common Stock, $.01 par value per share |  | 95,168,364                









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EXPLANATORY NOTE

This report combines the quarterly reports on Form 10-Q for the quarter ended March 31, 2011 of Digital Realty Trust, Inc., a Maryland corporation, and Digital Realty Trust, L.P., a Maryland limited
partnership, of which Digital Realty Trust, Inc. is the sole general partner. Unless otherwise indicated or unless the context requires otherwise, all references in this report to we, us, our, our
company or the company refer to Digital Realty Trust, Inc. together with its consolidated subsidiaries, including Digital Realty Trust, L.P. Unless otherwise indicated or unless the context requires otherwise, all references to
our operating partnership or the operating partnership refer to Digital Realty Trust, L.P. together with its consolidated subsidiaries.

Digital Realty Trust, Inc. is a real estate investment trust, or REIT, and the sole general partner of Digital Realty Trust, L.P. As of March 31, 2011, Digital Realty Trust, Inc. owned an
approximate 94.4% common general partnership interest in Digital Realty Trust, L.P. The remaining approximate 5.6% common limited partnership interests are owned by non-affiliated investors and certain directors and officers of Digital Realty Trust,
Inc. As of March 31, 2011, Digital Realty Trust, Inc. owned all of the preferred limited partnership interests of Digital Realty Trust, L.P. As the sole general partner of Digital Realty Trust, L.P., Digital Realty Trust, Inc. has the
full, exclusive and complete responsibility for the operating partnerships day-to-day management and control.

We believe combining the
quarterly reports on Form 10-Q of Digital Realty Trust, Inc. and Digital Realty Trust, L.P. into this single report results in the following benefits:



| |  |  | enhancing investors understanding of our company and our operating partnership by enabling investors to view the business as a whole in the same
manner as management views and operates the business;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | eliminating duplicative disclosure and providing a more streamlined and readable presentation since a substantial portion of the disclosure applies to
both our company and our operating partnership; and
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | creating time and cost efficiencies through the preparation of one combined report instead of two separate reports.
| | - |  | -------------------------------------------------------------------------------------------------------------------

There are few differences between our company and our operating partnership, which are reflected in the disclosure in this report. We believe it is
important to understand the differences between our company and our operating partnership in the context of how Digital Realty Trust, Inc. and Digital Realty Trust, L.P. operate as an interrelated consolidated company. Digital Realty Trust, Inc. is
a REIT, whose only material asset is its ownership of partnership interests of Digital Realty Trust, L.P. As a result, Digital Realty Trust, Inc. does not conduct business itself, other than acting as the sole general partner of Digital Realty
Trust, L.P., issuing public equity from time to time and guaranteeing certain unsecured debt of Digital Realty Trust, L.P. Digital Realty Trust, Inc. itself does not issue any indebtedness but guarantees some of the unsecured debt of Digital
Realty Trust, L.P., as disclosed in this report. Digital Realty Trust, L.P. holds substantially all the assets of the company and holds the ownership interests in the companys joint ventures. Digital Realty Trust, L.P. conducts the
operations of the business and is structured as a partnership with no publicly traded equity. Except for net proceeds from public equity issuances by Digital Realty Trust, Inc., which are generally contributed to Digital Realty Trust, L.P. in
exchange for partnership units, Digital Realty Trust, L.P. generates the capital required by the companys business through Digital Realty Trust, L.P.s operations, by Digital Realty Trust, L.P.s direct or indirect incurrence of
indebtedness or through the issuance of partnership units.

The presentation of noncontrolling interests in operating partnership,
stockholders equity and partners capital are the main areas of difference between the condensed consolidated financial statements of Digital Realty Trust, Inc. and those of Digital Realty Trust, L.P. The common limited partnership
interests held by the limited partners in Digital Realty Trust, L.P. are presented as limited partners capital within partners capital in Digital Realty Trust, L.P.s condensed consolidated financial statements and as noncontrolling
interests in operating partnership within equity in Digital Realty Trust, Inc.s condensed consolidated financial statements. The common and preferred partnership interests held by Digital Realty Trust, Inc. in Digital Realty Trust, L.P. are
presented as general partners capital within partners capital in Digital Realty Trust, L.P.s condensed consolidated financial statements and as preferred stock, common stock, additional paid-in capital and accumulated dividends in
excess of earnings within stockholders equity in Digital Realty Trust, Inc.s condensed consolidated financial statements. The differences in the presentations between stockholders equity and partners capital result from the
differences in the equity issued at the Digital Realty Trust, Inc. and the Digital Realty Trust, L.P. levels.



2



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To help investors understand the significant differences between the company and the operating partnership,
this report presents the following separate sections for each of the company and the operating partnership:



| |  |  | condensed consolidated financial statements;
| | - |  | --------------------------------------------



| |  |  | the following notes to the condensed consolidated financial statements:
| | - |  | -----------------------------------------------------------------------



| |  |  | Debt;
| | - |  | -----



| |  |  | Equity of the company and Capital of the operating partnership; and
| | - |  | -------------------------------------------------------------------



| |  |  | Income per Share and Income per Unit;
| | - |  | -------------------------------------



| |  |  | Liquidity and Capital Resources in Managements Discussion and Analysis of Financial Condition and Results of Operations; and
| | - |  | -----------------------------------------------------------------------------------------------------------------------------



| |  |  | Unregistered Sales of Equity Securities and Use of Proceeds.
| | - |  | ------------------------------------------------------------

This report also includes separate Item 4. Controls and Procedures sections and separate Exhibit 31 and 32 certifications for each of the company and the operating partnership in order to establish
that the Chief Executive Officer and the Chief Financial Officer of each entity have made the requisite certifications and that the company and the operating partnership are compliant with Rule 13a-15 or Rule 15d-15 of the Securities Exchange Act of
1934 and 18 U.S.C. §1350.

In order to highlight the differences between the company and the operating partnership, the separate sections
in this report for the company and the operating partnership specifically refer to the company and the operating partnership. In the sections that combine disclosure of the company and the operating partnership, this report refers to actions or
holdings as being actions or holdings of the company. Although the operating partnership is generally the entity that enters into contracts and joint ventures and holds assets and debt, reference to the company is appropriate because the business is
one enterprise and the company operates the business through the operating partnership.

As general partner with control of the operating
partnership, Digital Realty Trust, Inc. consolidates the operating partnership for financial reporting purposes, and it does not have significant assets other than its investment in the operating partnership. Therefore, the assets and liabilities of
Digital Realty Trust, Inc. and Digital Realty Trust, L.P. are the same on their respective condensed consolidated financial statements. The separate discussions of Digital Realty Trust, Inc. and Digital Realty Trust, L.P. in this report should be
read in conjunction with each other to understand the results of the company on a consolidated basis and how management operates the company.



3



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DIGITAL REALTY TRUST, INC. AND DIGITAL REALTY TRUST, L.P.

FORM 10-Q

FOR THE QUARTER ENDED MARCH 31, 2011

TABLE OF CONTENTS



|         |  |                                                                                                                           |  |            |    | 
|-------- |  | ------------------------------------------------------------------------------------------------------------------------- |  | ---------- | -- | 
|         |  |                                                                                                                           |  | PageNumber |   
|PART I.  |  | FINANCIAL INFORMATION                                                                                                     |  |            |    | 
|         |  |                                                                                                                          
|ITEM 1.  |  | Condensed Consolidated Financial Statements of Digital Realty Trust, Inc.:                                                |  |            |    | 
|         |  |                                                                                                                          
|         |  | Condensed Consolidated Balance Sheets as of March 31, 2011 (unaudited) and December 31,
2010                              |  |            | 5  | 
|         |  |                                                                                                                          
|         |  | Condensed Consolidated Income Statements for the three months ended March 
31, 2011 and 2010 (unaudited)                  |  |            | 6  | 
|         |  |                                                                                                                          
|         |  | Condensed Consolidated Statement of Equity for the three months ended March 31, 2011
(unaudited)                          |  |            | 7  | 
|         |  |                                                                                                                          
|         |  | Condensed Consolidated Statements of Comprehensive Income for the three months ended March 
31, 2011 and 2010 (unaudited) |  |            | 8  | 
|         |  |                                                                                                                          
|         |  | Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2011 and 2010 (unaudited)            |  |            | 9  | 
|         |  |                                                                                                                          
|         |  | Condensed Consolidated Financial Statements of Digital Realty Trust, L.P.:                                                |  |            |    | 
|         |  |                                                                                                                          
|         |  | Condensed Consolidated Balance Sheets as of March 31, 2011 (unaudited) and December 31,
2010                              |  |            | 11 | 
|         |  |                                                                                                                          
|         |  | Condensed Consolidated Income Statements for the three months ended March 31, 2011 and 2010
(unaudited)                   |  |            | 12 | 
|         |  |                                                                                                                          
|         |  | Condensed Consolidated Statement of Capital for the three months ended March 31, 2011
(unaudited)                         |  |            | 13 | 
|         |  |                                                                                                                          
|         |  | Condensed Consolidated Statements of Comprehensive Income for the three months ended March 
31, 2011 and 2010 (unaudited) |  |            | 14 | 
|         |  |                                                                                                                          
|         |  | Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2011 and 2010 (unaudited)            |  |            | 15 | 
|         |  |                                                                                                                          
|         |  | Notes to Condensed Consolidated Financial Statements of Digital Realty Trust, Inc. and Digital Realty Trust,
 L.P.        |  |            | 17 | 
|         |  |                                                                                                                          
|ITEM 2.  |  | Managements Discussion and Analysis of Financial Condition and Results of
Operations                                     |  |            | 48 | 
|         |  |                                                                                                                          
|ITEM 3.  |  | Quantitative and Qualitative Disclosures About Market Risk                                                                |  |            | 69 | 
|         |  |                                                                                                                          
|ITEM 4.  |  | Controls and Procedures (Digital Realty Trust, Inc.)                                                                      |  |            | 71 | 
|         |  |                                                                                                                          
|         |  | Controls and Procedures (Digital Realty Trust, L.P.)                                                                      |  |            | 71 | 
|         |  |                                                                                                                          
|PART II. |  | OTHER INFORMATION                                                                                                         |  |            | 72 | 
|         |  |                                                                                                                          
|ITEM 1.  |  | Legal Proceedings                                                                                                         |  |            | 72 | 
|         |  |                                                                                                                          
|ITEM 1A. |  | Risk Factors                                                                                                              |  |            | 72 | 
|         |  |                                                                                                                          
|ITEM 2.  |  | Unregistered Sales of Equity Securities and Use of Proceeds                                                               |  |            | 72 | 
|         |  |                                                                                                                          
|ITEM 3.  |  | Defaults Upon Senior Securities                                                                                           |  |            | 72 | 
|         |  |                                                                                                                          
|ITEM 4.  |  | Removed and Reserved                                                                                                      |  |            | 72 | 
|         |  |                                                                                                                          
|ITEM 5.  |  | Other Information                                                                                                         |  |            | 72 | 
|         |  |                                                                                                                          
|ITEM 6.  |  | Exhibits                                                                                                                  |  |            | 73 | 
|         |  |                                                                                                                          
|         |  | Signatures                                                                                                                |  |            | 75 | 
|         |  |                                                                                                                          
|         |  | Exhibit Index                                                                                                             |  |            | 76 | 



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands, except share and per share data)



|                                                                                                                                                                                                                                                         |  |                |           |   |                   |   |           |  
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | -------------- | --------- | - | ----------------- | - | --------- | -
|                                                                                                                                                                                                                                                         |  | March 
31,2011 |           |   | December 
31,2010 |  
|                                                                                                                                                                                                                                                         |  | (unaudited)    |           |   |                   |  
|ASSETS                                                                                                                                                                                                                                                   |  |                |           |   |                   |   |           |  
|Investments in real estate:                                                                                                                                                                                                                              |  |                |           |   |                   |   |           |  
|Properties:                                                                                                                                                                                                                                              |  |                |           |   |                   |   |           |  
|Land                                                                                                                                                                                                                                                     |  | $              | 480,788   |   |                   | $ | 478,629   |  
|Acquired ground leases                                                                                                                                                                                                                                   |  |                | 6,666     |   |                   |   | 6,374     |  
|Buildings and improvements                                                                                                                                                                                                                               |  |                | 4,662,458 |   |                   |   | 4,459,047 |  
|Tenant improvements                                                                                                                                                                                                                                      |  |                | 287,440   |   |                   |   | 283,492   |  
|                                                                                                                                                                                                                                                         |  |                |           |   |                   |   |           |  
|Total investments in properties                                                                                                                                                                                                                          |  |                | 5,437,352 |   |                   |   | 5,227,542 |  
|Accumulated depreciation and amortization                                                                                                                                                                                                                |  |                | (720,610  | ) |                   |   | (660,700  | )
|                                                                                                                                                                                                                                                         |  |                |           |   |                   |   |           |  
|Net investments in properties                                                                                                                                                                                                                            |  |                | 4,716,742 |   |                   |   | 4,566,842 |  
|Investment in unconsolidated joint ventures                                                                                                                                                                                                              |  |                | 17,962    |   |                   |   | 17,635    |  
|                                                                                                                                                                                                                                                         |  |                |           |   |                   |   |           |  
|Net investments in real estate                                                                                                                                                                                                                           |  |                | 4,734,704 |   |                   |   | 4,584,477 |  
|Cash and cash equivalents                                                                                                                                                                                                                                |  |                | 44,368    |   |                   |   | 11,719    |  
|Accounts and other receivables, net of allowance for doubtful accounts of $2,331 and $3,250 as of March 31, 2011 and
December 31, 2010, respectively                                                                                                     |  |                | 78,992    |   |                   |   | 70,337    |  
|Deferred rent                                                                                                                                                                                                                                            |  |                | 203,708   |   |                   |   | 190,067   |  
|Acquired above market leases, net                                                                                                                                                                                                                        |  |                | 37,421    |   |                   |   | 40,539    |  
|Acquired in place lease value and deferred leasing costs, net                                                                                                                                                                                            |  |                | 327,625   |   |                   |   | 334,366   |  
|Deferred financing costs, net                                                                                                                                                                                                                            |  |                | 23,836    |   |                   |   | 22,825    |  
|Restricted cash                                                                                                                                                                                                                                          |  |                | 59,836    |   |                   |   | 60,062    |  
|Other assets                                                                                                                                                                                                                                             |  |                | 26,855    |   |                   |   | 15,091    |  
|                                                                                                                                                                                                                                                         |  |                |           |   |                   |   |           |  
|Total assets                                                                                                                                                                                                                                             |  | $              | 5,537,345 |   |                   | $ | 5,329,483 |  
|                                                                                                                                                                                                                                                         |  |                |           |   |                   |   |           |  
|LIABILITIES AND EQUITY                                                                                                                                                                                                                                   |  |                |           |   |                   |   |           |  
|Revolving credit facility                                                                                                                                                                                                                                |  | $              | 209,687   |   |                   | $ | 333,534   |  
|Unsecured senior notes, net of discount                                                                                                                                                                                                                  |  |                | 1,465,351 |   |                   |   | 1,066,030 |  
|Exchangeable senior debentures, net of discount                                                                                                                                                                                                          |  |                | 318,669   |   |                   |   | 353,702   |  
|Mortgage loans, net of premiums                                                                                                                                                                                                                          |  |                | 1,051,222 |   |                   |   | 1,043,188 |  
|Other secured loan                                                                                                                                                                                                                                       |  |                | 10,500    |   |                   |   | 10,500    |  
|Accounts payable and other accrued liabilities                                                                                                                                                                                                           |  |                | 265,714   |   |                   |   | 237,631   |  
|Accrued dividends and distributions                                                                                                                                                                                                                      |  |                |          |   |                   |   | 51,210    |  
|Acquired below market leases, net                                                                                                                                                                                                                        |  |                | 89,018    |   |                   |   | 93,250    |  
|Security deposits and prepaid rents                                                                                                                                                                                                                      |  |                | 88,111    |   |                   |   | 85,775    |  
|                                                                                                                                                                                                                                                         |  |                |           |   |                   |   |           |  
|Total liabilities                                                                                                                                                                                                                                        |  |                | 3,498,272 |   |                   |   | 3,274,820 |  
|                                                                                                                                                                                                                                                         |  |               
|Commitments and contingencies                                                                                                                                                                                                                            |  |                |           |   |                   |   |           |  
|                                                                                                                                                                                                                                                         |  |               
|Equity:                                                                                                                                                                                                                                                  |  |                |           |   |                   |   |           |  
|Stockholders Equity:                                                                                                                                                                                                                                     |  |                |           |   |                   |   |           |  
|Preferred Stock: $0.01 par value, 30,000,000 authorized:                                                                                                                                                                                                 |  |                |           |   |                   |   |           |  
|Series C Cumulative Convertible Preferred Stock, 4.375%, $167,499 and $174,999 liquidation preference, respectively ($25.00 per
share), 6,699,955 and 6,999,955 shares issued and outstanding as of March 31, 2011 and December 31, 2010, respectively   |  |                | 161,822   |   |                   |   | 169,067   |  
|Series D Cumulative Convertible Preferred Stock, 5.500%, $341,120 and $344,683 liquidation preference, respectively ($25.00 per
share), 13,644,790 and 13,787,300 shares issued and outstanding as of March 31, 2011 and December 31, 2010, respectively |  |                | 329,829   |   |                   |   | 333,274   |  
|Common Stock: $0.01 par value, 145,000,000 authorized, 92,078,429 and 91,159,221 shares issued and outstanding as of
March 31, 2011 and December 31, 2010, respectively                                                                                  |  |                | 917       |   |                   |   | 909       |  
|Additional paid-in capital                                                                                                                                                                                                                               |  |                | 1,854,424 |   |                   |   | 1,849,497 |  
|Dividends in excess of earnings                                                                                                                                                                                                                          |  |                | (379,627  | ) |                   |   | (348,148  | )
|Accumulated other comprehensive loss, net                                                                                                                                                                                                                |  |                | (23,570   | ) |                   |   | (42,081   | )
|                                                                                                                                                                                                                                                         |  |                |           |   |                   |   |           |  
|Total stockholders equity                                                                                                                                                                                                                               |  |                | 1,943,795 |   |                   |   | 1,962,518 |  
|                                                                                                                                                                                                                                                         |  |                |           |   |                   |   |           |  
|Noncontrolling Interests:                                                                                                                                                                                                                                |  |                |           |   |                   |   |           |  
|Noncontrolling interests in operating partnership                                                                                                                                                                                                        |  |                | 55,669    |   |                   |   | 52,436    |  
|Noncontrolling interests in consolidated joint ventures                                                                                                                                                                                                  |  |                | 39,609    |   |                   |   | 39,709    |  
|                                                                                                                                                                                                                                                         |  |                |           |   |                   |   |           |  
|Total noncontrolling interests                                                                                                                                                                                                                           |  |                | 95,278    |   |                   |   | 92,145    |  
|                                                                                                                                                                                                                                                         |  |                |           |   |                   |   |           |  
|Total equity                                                                                                                                                                                                                                             |  |                | 2,039,073 |   |                   |   | 2,054,663 |  
|                                                                                                                                                                                                                                                         |  |                |           |   |                   |   |           |  
|Total liabilities and equity                                                                                                                                                                                                                             |  | $              | 5,537,345 |   |                   | $ | 5,329,483 |  
|                                                                                                                                                                                                                                                         |  |                |           |   |                   |   |           |  

See accompanying notes to the condensed consolidated financial statements.



5



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##### Table of Contents

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED INCOME STATEMENTS

(unaudited, in thousands, except share and per share data)



|                                                       |  |                              |            |   |      |   |            |  
|------------------------------------------------------ |  | ---------------------------- | ---------- | - | ---- | - | ---------- | -
|                                                       |  | Three Months Ended March 31, |           
|                                                       |  | 2011                         |            |   | 2010 |  
|Operating Revenues:                                    |  |                              |            |   |      |   |            |  
|Rental                                                 |  | $                            | 196,795    |   |      | $ | 151,306    |  
|Tenant reimbursements                                  |  |                              | 51,834     |   |      |   | 39,059     |  
|Construction management                                |  |                              | 1,817      |   |      |   | 1,414      |  
|Other                                                  |  |                              | 295        |   |      |   |           |  
|                                                       |  |                              |            |   |      |   |            |  
|Total operating revenues                               |  |                              | 250,741    |   |      |   | 191,779    |  
|                                                       |  |                              |            |   |      |   |            |  
|Operating Expenses:                                    |  |                              |            |   |      |   |            |  
|Rental property operating and maintenance              |  |                              | 71,723     |   |      |   | 52,595     |  
|Property taxes                                         |  |                              | 13,471     |   |      |   | 12,721     |  
|Insurance                                              |  |                              | 2,051      |   |      |   | 1,735      |  
|Construction management                                |  |                              | 1,737      |   |      |   | 647        |  
|Depreciation and amortization                          |  |                              | 73,918     |   |      |   | 57,532     |  
|General and administrative                             |  |                              | 12,405     |   |      |   | 10,519     |  
|Transactions                                           |  |                              | 681        |   |      |   | 833        |  
|Other                                                  |  |                              | 90         |   |      |   | 2          |  
|                                                       |  |                              |            |   |      |   |            |  
|Total operating expenses                               |  |                              | 176,076    |   |      |   | 136,584    |  
|                                                       |  |                              |            |   |      |   |            |  
|Operating income                                       |  |                              | 74,665     |   |      |   | 55,195     |  
|                                                       |  |                             
|Other Income (Expenses):                               |  |                              |            |   |      |   |            |  
|Equity in earnings of unconsolidated joint ventures    |  |                              | 1,208      |   |      |   | 1,978      |  
|Interest and other income                              |  |                              | 264        |   |      |   | 31         |  
|Interest expense                                       |  |                              | (36,082    | ) |      |   | (30,902    | )
|Tax expense                                            |  |                              | (428       | ) |      |   | (716       | )
|Loss from early extinguishment of debt                 |  |                              | (615       | ) |      |   |           |  
|                                                       |  |                              |            |   |      |   |            |  
|Net income                                             |  |                              | 39,012     |   |      |   | 25,586     |  
|                                                       |  |                             
|Net income attributable to noncontrolling interests    |  |                              | (1,510     | ) |      |   | (741       | )
|                                                       |  |                              |            |   |      |   |            |  
|Net income attributable to Digital Realty Trust, Inc.  |  |                              | 37,502     |   |      |   | 24,845     |  
|                                                       |  |                             
|Preferred stock dividends                              |  |                              | (6,522     | ) |      |   | (10,101    | )
|                                                       |  |                              |            |   |      |   |            |  
|Net income available to common stockholders            |  | $                            | 30,980     |   |      | $ | 14,744     |  
|                                                       |  |                              |            |   |      |   |            |  
|Net income per share available to common stockholders: |  |                              |            |   |      |   |            |  
|Basic                                                  |  | $                            | 0.34       |   |      | $ | 0.19       |  
|Diluted                                                |  | $                            | 0.33       |   |      | $ | 0.18       |  
|                                                       |  |                              |            |   |      |   |            |  
|Weighted average common shares outstanding:            |  |                              |            |   |      |   |            |  
|Basic                                                  |  |                              | 91,428,355 |   |      |   | 77,770,691 |  
|Diluted                                                |  |                              | 92,600,215 |   |      |   | 80,742,110 |  

See accompanying notes
to the condensed consolidated financial statements.



6



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##### Table of Contents

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENT OF EQUITY

(unaudited, in thousands, except share data)



|                                                                                                          |  |                |         |   |                       |  |            |             |  |   |                          |  |  |                                          |           |   |                                        |   |          |                           |  |   |                                                |   |  |                                                      |           |   |                              |   |        |              |  |   |        |   |  |   |        |   |  |   |           |  
|--------------------------------------------------------------------------------------------------------- |  | -------------- | ------- | - | --------------------- |  | ---------- | ----------- |  | - | ------------------------ |  |  | ---------------------------------------- | --------- | - | -------------------------------------- | - | -------- | ------------------------- |  | - | ---------------------------------------------- | - |  | ---------------------------------------------------- | --------- | - | ---------------------------- | - | ------ | ------------ |  | - | ------ | - |  | - | ------ | - |  | - | --------- | -
|                                                                                                          |  | PreferredStock |         |   | Number ofCommonShares |  |            | CommonStock |  |   | AdditionalPaid-inCapital |  |  | AccumulatedDividends
inExcess ofEarnings |           |   | AccumulatedOtherComprehensiveLoss, net |   |          | TotalStockholders
Equity |  |   | NoncontrollingInterests
inOperatingPartnership |   |  | NoncontrollingInterests
inConsolidatedJoint Ventures |           |   | TotalNoncontrollingInterests |   |        | Total Equity | 
|Balance as of December 31, 2010                                                                           |  | $              | 502,341 |   |                       |  | 91,159,221 |             |  | $ | 909                      |  |  | $                                        | 1,849,497 |   |                                        | $ | (348,148 | )                         |  | $ | (42,081                                        | ) |  | $                                                    | 1,962,518 |   |                              | $ | 52,436 |              |  | $ | 39,709 |   |  | $ | 92,145 |   |  | $ | 2,054,663 |  
|Conversion of units to common stock                                                                       |  |                |        |   |                       |  | 164,176    |             |  |   | 2                        |  |  |                                          | 1,813     |   |                                        |   |         |                           |  |   |                                               |   |  |                                                      | 1,815     |   |                              |   | (1,815 | )            |  |   |       |   |  |   | (1,815 | ) |  |   |          |  
|Issuance of restricted stock, net of forfeitures                                                          |  |                |        |   |                       |  | 84,204     |             |  |   |                         |  |  |                                          |          |   |                                        |   |         |                           |  |   |                                               |   |  |                                                      |          |   |                              |   |       |              |  |   |       |   |  |   |       |   |  |   |          |  
|Net proceeds from sale of common stock                                                                    |  |                |        |   |                       |  | 98,100     |             |  |   | 1                        |  |  |                                          | 5,596     |   |                                        |   |         |                           |  |   |                                               |   |  |                                                      | 5,597     |   |                              |   |       |              |  |   |       |   |  |   |       |   |  |   | 5,597     |  
|Exercise of stock options                                                                                 |  |                |        |   |                       |  | 23,232     |             |  |   |                         |  |  |                                          | 866       |   |                                        |   |         |                           |  |   |                                               |   |  |                                                      | 866       |   |                              |   |       |              |  |   |       |   |  |   |       |   |  |   | 866       |  
|Issuance of common stock in exchange for debentures                                                       |  |                |        |   |                       |  | 303,073    |             |  |   | 3                        |  |  |                                          | (11,480   | ) |                                        |   |         |                           |  |   |                                               |   |  |                                                      | (11,477   | ) |                              |   |       |              |  |   |       |   |  |   |       |   |  |   | (11,477   | )
|Conversion of preferred stock                                                                             |  |                | (10,690 | ) |                       |  | 246,423    |             |  |   | 2                        |  |  |                                          | 10,688    |   |                                        |   |         |                           |  |   |                                               |   |  |                                                      |          |   |                              |   |       |              |  |   |       |   |  |   |       |   |  |   |          |  
|Amortization of unearned compensation regarding share based awards                                        |  |                |        |   |                       |  |           |             |  |   |                         |  |  |                                          | 3,647     |   |                                        |   |         |                           |  |   |                                               |   |  |                                                      | 3,647     |   |                              |   |       |              |  |   |       |   |  |   |       |   |  |   | 3,647     |  
|Reclassification of vested share based awards                                                             |  |                |        |   |                       |  |           |             |  |   |                         |  |  |                                          | (6,203    | ) |                                        |   |         |                           |  |   |                                               |   |  |                                                      | (6,203    | ) |                              |   | 6,203  |              |  |   |       |   |  |   | 6,203  |   |  |   |          |  
|Dividends declared on preferred stock                                                                     |  |                |        |   |                       |  |           |             |  |   |                         |  |  |                                          |          |   |                                        |   | (6,522   | )                         |  |   |                                               |   |  |                                                      | (6,522    | ) |                              |   |        |              |  |   |       |   |  |   |       |   |  |   | (6,522    | )
|Dividends and distributions on common stock and common and incentive units                                |  |                |        |   |                       |  |           |             |  |   |                         |  |  |                                          |          |   |                                        |   | (62,459  | )                         |  |   |                                               |   |  |                                                      | (62,459   | ) |                              |   | (3,793 | )            |  |   |       |   |  |   | (3,793 | ) |  |   | (66,252   | )
|Contributions from noncontrolling interests in consolidated joint ventures                                |  |                |        |   |                       |  |           |             |  |   |                         |  |  |                                          |          |   |                                        |   |         |                           |  |   |                                               |   |  |                                                      |          |   |                              |   |       |              |  |   | 42     |   |  |   | 42     |   |  |   | 42        |  
|Net income                                                                                                |  |                |        |   |                       |  |           |             |  |   |                         |  |  |                                          |          |   |                                        |   | 37,502   |                           |  |   |                                               |   |  |                                                      | 37,502    |   |                              |   | 1,652  |              |  |   | (142   | ) |  |   | 1,510  |   |  |   | 39,012    |  
|Other comprehensive income - foreign currency translation adjustments                                     |  |                |        |   |                       |  |           |             |  |   |                         |  |  |                                          |          |   |                                        |   |         |                           |  |   | 15,576                                         |   |  |                                                      | 15,576    |   |                              |   | 830    |              |  |   |       |   |  |   | 830    |   |  |   | 16,406    |  
|Other comprehensive income - fair value of interest rate swaps                                            |  |                |        |   |                       |  |           |             |  |   |                         |  |  |                                          |          |   |                                        |   |         |                           |  |   | 1,430                                          |   |  |                                                      | 1,430     |   |                              |   | 76     |              |  |   |       |   |  |   | 76     |   |  |   | 1,506     |  
|Other comprehensive income - reclassification of accumulated other comprehensive loss to interest expense |  |                |        |   |                       |  |           |             |  |   |                         |  |  |                                          |          |   |                                        |   |         |                           |  |   | 1,505                                          |   |  |                                                      | 1,505     |   |                              |   | 80     |              |  |   |       |   |  |   | 80     |   |  |   | 1,585     |  
|                                                                                                          |  |                |         |   |                       |  |            |             |  |   |                          |  |  |                                          |           |   |                                        |   |          |                           |  |   |                                                |   |  |                                                      |           |   |                              |   |        |              |  |   |        |   |  |   |        |   |  |   |           |  
|Balance as of March 31, 2011                                                                              |  | $              | 491,651 |   |                       |  | 92,078,429 |             |  | $ | 917                      |  |  | $                                        | 1,854,424 |   |                                        | $ | (379,627 | )                         |  | $ | (23,570                                        | ) |  | $                                                    | 1,943,795 |   |                              | $ | 55,669 |              |  | $ | 39,609 |   |  | $ | 95,278 |   |  | $ | 2,039,073 |  
|                                                                                                          |  |                |         |   |                       |  |            |             |  |   |                          |  |  |                                          |           |   |                                        |   |          |                           |  |   |                                                |   |  |                                                      |           |   |                              |   |        |              |  |   |        |   |  |   |        |   |  |   |           |  

See accompanying notes to the condensed consolidated financial statements.



7



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##### Table of Contents

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(unaudited, in thousands)



|                                                                     |  |                             |        |   |      |   |         |  
|-------------------------------------------------------------------- |  | --------------------------- | ------ | - | ---- | - | ------- | -
|                                                                     |  | Three months
endedMarch 31, |       
|                                                                     |  | 2011                        |        |   | 2010 |  
|                                                                     |  |                            
|Net income                                                           |  | $                           | 39,012 |   |      | $ | 25,586  |  
|                                                                     |  |                            
|Other comprehensive income (loss):                                   |  |                             |        |   |      |   |         |  
|Foreign currency translation adjustments                             |  |                             | 16,406 |   |      |   | (18,287 | )
|Increase (decrease) in fair value of interest rate swaps             |  |                             | 1,506  |   |      |   | (4,276  | )
|Reclassification to interest expense from interest rate swaps        |  |                             | 1,585  |   |      |   | 1,659   |  
|                                                                     |  |                             |        |   |      |   |         |  
|                                                                     |  |                            
|Comprehensive income                                                 |  |                             | 58,509 |   |      |   | 4,682   |  
|                                                                     |  |                            
|Comprehensive (income) loss attributable to noncontrolling interests |  |                             | (2,496 | ) |      |   | 553     |  
|                                                                     |  |                             |        |   |      |   |         |  
|                                                                     |  |                            
|Comprehensive income attributable to Digital Realty Trust, Inc.      |  | $                           | 56,013 |   |      | $ | 5,235   |  
|                                                                     |  |                             |        |   |      |   |         |  

See accompanying notes to the condensed consolidated financial statements.



8



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##### Table of Contents

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited, in thousands)



|                                                                                                            |  |                              |          |   |      |   |          |  
|----------------------------------------------------------------------------------------------------------- |  | ---------------------------- | -------- | - | ---- | - | -------- | -
|                                                                                                            |  | Three Months Ended March 31, |         
|                                                                                                            |  | 2011                         |          |   | 2010 |  
|Cash flows from operating activities:                                                                       |  |                              |          |   |      |   |          |  
|                                                                                                            |  |                             
|Net income                                                                                                  |  | $                            | 39,012   |   |      | $ | 25,586   |  
|Adjustments to reconcile net income to net cash provided by operating activities                            |  |                              |          |   |      |   |          |  
|                                                                                                            |  |                             
|Loss on early extinguishment of debt-non cash portion                                                       |  |                              | 519      |   |      |   |         |  
|Equity in earnings of unconsolidated joint ventures                                                         |  |                              | (1,208   | ) |      |   | (1,978   | )
|Distributions from unconsolidated joint ventures                                                            |  |                              | 1,000    |   |      |   | 1,000    |  
|Write-off of net assets due to early lease terminations                                                     |  |                              | 90       |   |      |   | 2        |  
|Depreciation and amortization of buildings and improvements, tenant improvements and acquired ground leases |  |                              | 57,559   |   |      |   | 46,025   |  
|Amortization of share-based unearned compensation                                                           |  |                              | 3,022    |   |      |   | 2,695    |  
|Allowance for (recovery of) doubtful accounts                                                               |  |                              | (919     | ) |      |   | 106      |  
|Amortization of deferred financing costs                                                                    |  |                              | 2,451    |   |      |   | 2,406    |  
|Write-off of deferred financing costs, included in net loss on early extinguishment of debt                 |  |                              | 79       |   |      |   |         |  
|Amortization of debt discount/premium                                                                       |  |                              | 786      |   |      |   | 1,095    |  
|Amortization of acquired in place lease value and deferred leasing costs                                    |  |                              | 16,359   |   |      |   | 11,507   |  
|Amortization of acquired above market leases and acquired below market leases, net                          |  |                              | (1,814   | ) |      |   | (2,283   | )
|Changes in assets and liabilities:                                                                          |  |                              |          |   |      |   |          |  
|Restricted cash                                                                                             |  |                              | 381      |   |      |   | (1,734   | )
|Accounts and other receivables                                                                              |  |                              | (5,841   | ) |      |   | (9,415   | )
|Deferred rent                                                                                               |  |                              | (12,749  | ) |      |   | (11,111  | )
|Deferred leasing costs                                                                                      |  |                              | (4,591   | ) |      |   | (5,132   | )
|Other assets                                                                                                |  |                              | (10,730  | ) |      |   | (8,179   | )
|Accounts payable and other accrued liabilities                                                              |  |                              | (20,289  | ) |      |   | (746     | )
|Security deposits and prepaid rents                                                                         |  |                              | 1,372    |   |      |   | 7,356    |  
|                                                                                                            |  |                              |          |   |      |   |          |  
|Net cash provided by operating activities                                                                   |  |                              | 64,489   |   |      |   | 57,200   |  
|                                                                                                            |  |                              |          |   |      |   |          |  
|Cash flows from investing activities:                                                                       |  |                              |          |   |      |   |          |  
|                                                                                                            |  |                             
|Acquisitions of properties                                                                                  |  |                              |         |   |      |   | (375,000 | )
|Investment in unconsolidated joint ventures                                                                 |  |                              | (119     | ) |      |   |         |  
|Deposits paid for acquisitions of properties                                                                |  |                              | (1,294   | ) |      |   |         |  
|Receipt of value added tax refund                                                                           |  |                              | 1,201    |   |      |   | 916      |  
|Refundable value added tax paid                                                                             |  |                              | (1,009   | ) |      |   | (1,115   | )
|Change in restricted cash                                                                                   |  |                              | (67      | ) |      |   | (588     | )
|Improvements to investments in real estate                                                                  |  |                              | (135,110 | ) |      |   | (66,877  | )
|Improvement advances to tenants                                                                             |  |                              | (1,346   | ) |      |   | (114     | )
|Collection of advances from tenants for improvements                                                        |  |                              | 187      |   |      |   | 23       |  
|                                                                                                            |  |                              |          |   |      |   |          |  
|Net cash used in investing activities                                                                       |  |                              | (137,557 | ) |      |   | (442,755 | )
|                                                                                                            |  |                              |          |   |      |   |          |  

See accompanying notes to the condensed consolidated financial statements.



9



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##### Table of Contents

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (continued)

(unaudited, in thousands)



|                                                                                                                                      |  |                              |          |   |      |   |          |  
|------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------- | -------- | - | ---- | - | -------- | -
|                                                                                                                                      |  | Three Months Ended March 31, |         
|                                                                                                                                      |  | 2011                         |          |   | 2010 |  
|Cash flows from financing activities:                                                                                                 |  |                              |          |   |      |   |          |  
|                                                                                                                                      |  |                             
|Borrowings on revolving credit facility                                                                                               |  | $                            | 260,873  |   |      | $ | 270,000  |  
|Repayments on revolving credit facility                                                                                               |  |                              | (382,500 | ) |      |   | (475,547 | )
|Borrowings on unsecured senior notes                                                                                                  |  |                              |         |   |      |   | 117,000  |  
|Borrowings on 5.875% unsecured senior notes due 2020                                                                                  |  |                              |         |   |      |   | 491,480  |  
|Borrowings on 5.250% unsecured senior notes due 2021                                                                                  |  |                              | 399,100  |   |      |   |         |  
|Principal payments on mortgage loans                                                                                                  |  |                              | (3,900   | ) |      |   | (3,255   | )
|Principal repayments on 2026 exchangeable senior debentures                                                                           |  |                              | (35,850  | ) |      |   |         |  
|Equity component settled associated with exchange of 2026 exchangeable senior debentures                                              |  |                              | (11,783  | ) |      |   |         |  
|Change in restricted cash                                                                                                             |  |                              | 625      |   |      |   | (13      | )
|Payment of loan fees and costs                                                                                                        |  |                              | (3,369   | ) |      |   | (4,944   | )
|Capital contributions received from noncontrolling interests in joint ventures                                                        |  |                              | 42       |   |      |   | 52       |  
|Gross proceeds from the sale of common stock                                                                                          |  |                              | 5,734    |   |      |   | 55,601   |  
|Common stock offering costs paid                                                                                                      |  |                              | (137     | ) |      |   | (977     | )
|Proceeds from exercise of stock options                                                                                               |  |                              | 866      |   |      |   | 1,895    |  
|Payment of dividends to preferred stockholders                                                                                        |  |                              | (6,522   | ) |      |   | (10,101  | )
|Payment of dividends to common stockholders and distributions to noncontrolling interests in operating
partnership                    |  |                              | (117,462 | ) |      |   | (77,147  | )
|                                                                                                                                      |  |                              |          |   |      |   |          |  
|Net cash provided by financing activities                                                                                             |  |                              | 105,717  |   |      |   | 364,044  |  
|                                                                                                                                      |  |                              |          |   |      |   |          |  
|Net increase (decrease) in cash and cash equivalents                                                                                  |  |                              | 32,649   |   |      |   | (21,511  | )
|                                                                                                                                      |  |                             
|Cash and cash equivalents at beginning of period                                                                                      |  |                              | 11,719   |   |      |   | 72,320   |  
|                                                                                                                                      |  |                              |          |   |      |   |          |  
|Cash and cash equivalents at end of period                                                                                            |  | $                            | 44,368   |   |      | $ | 50,809   |  
|                                                                                                                                      |  |                              |          |   |      |   |          |  
|Supplemental disclosure of cash flow information:                                                                                     |  |                              |          |   |      |   |          |  
|Cash paid for interest, including amounts capitalized                                                                                 |  | $                            | 45,208   |   |      | $ | 22,231   |  
|Cash paid for taxes                                                                                                                   |  |                              | 87       |   |      |   | 174      |  
|                                                                                                                                      |  |                             
|Supplementary disclosure of noncash investing and financing activities:                                                               |  |                              |          |   |      |   |          |  
|                                                                                                                                      |  |                             
|Change in net assets related to foreign currency translation adjustments                                                              |  | $                            | 16,406   |   |      | $ | (18,287  | )
|Decrease (increase) in accounts payable and other accrued liabilities related to change in fair value of interest rate
swaps          |  |                              | 1,506    |   |      |   | (4,276   | )
|Noncontrolling interests in operating partnership redeemed for or converted to shares of common stock                                 |  |                              | 1,815    |   |      |   | 1,711    |  
|Accrual for additions to investments in real estate and tenant improvement advances included in accounts payable and accrued
expenses |  |                              | 134,693  |   |      |   | 71,527   |  
|Issuance of common stock in exchange of 2026 exchangeable senior debentures, net                                                      |  |                              | 194      |   |      |   |         |  
|                                                                                                                                      |  |                             
|Allocation of purchase price of properties/investment in partnership to:                                                              |  |                              |          |   |      |   |          |  
|Investments in real estate                                                                                                            |  |                              |         |   |      |   | 346,436  |  
|Acquired above market leases                                                                                                          |  |                              |         |   |      |   | 9,714    |  
|Acquired below market leases                                                                                                          |  |                              |         |   |      |   | (26,450  | )
|Acquired in place lease value and deferred leasing costs                                                                              |  |                              |         |   |      |   | 45,300   |  
|                                                                                                                                      |  |                              |          |   |      |   |          |  
|Cash paid for acquisition of properties                                                                                               |  | $                            |         |   |      | $ | 375,000  |  
|                                                                                                                                      |  |                              |          |   |      |   |          |  

See accompanying notes to the condensed consolidated financial statements.



10



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##### Table of Contents

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands, except unit and per unit data)



|                                                                                                                                                                                                                                                                                                                                                          |  |                |           |   |                   |   |           |  
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | -------------- | --------- | - | ----------------- | - | --------- | -
|                                                                                                                                                                                                                                                                                                                                                          |  | March 
31,2011 |           |   | December 
31,2010 |  
|                                                                                                                                                                                                                                                                                                                                                          |  | (unaudited)    |           |   |                   |  
|ASSETS                                                                                                                                                                                                                                                                                                                                                    |  |                |           |   |                   |   |           |  
|Investments in real estate:                                                                                                                                                                                                                                                                                                                               |  |                |           |   |                   |   |           |  
|Properties:                                                                                                                                                                                                                                                                                                                                               |  |                |           |   |                   |   |           |  
|Land                                                                                                                                                                                                                                                                                                                                                      |  | $              | 480,788   |   |                   | $ | 478,629   |  
|Acquired ground leases                                                                                                                                                                                                                                                                                                                                    |  |                | 6,666     |   |                   |   | 6,374     |  
|Buildings and improvements                                                                                                                                                                                                                                                                                                                                |  |                | 4,662,458 |   |                   |   | 4,459,047 |  
|Tenant improvements                                                                                                                                                                                                                                                                                                                                       |  |                | 287,440   |   |                   |   | 283,492   |  
|                                                                                                                                                                                                                                                                                                                                                          |  |                |           |   |                   |   |           |  
|Total investments in properties                                                                                                                                                                                                                                                                                                                           |  |                | 5,437,352 |   |                   |   | 5,227,542 |  
|Accumulated depreciation and amortization                                                                                                                                                                                                                                                                                                                 |  |                | (720,610  | ) |                   |   | (660,700  | )
|                                                                                                                                                                                                                                                                                                                                                          |  |                |           |   |                   |   |           |  
|Net investments in properties                                                                                                                                                                                                                                                                                                                             |  |                | 4,716,742 |   |                   |   | 4,566,842 |  
|Investment in unconsolidated joint ventures                                                                                                                                                                                                                                                                                                               |  |                | 17,962    |   |                   |   | 17,635    |  
|                                                                                                                                                                                                                                                                                                                                                          |  |                |           |   |                   |   |           |  
|Net investments in real estate                                                                                                                                                                                                                                                                                                                            |  |                | 4,734,704 |   |                   |   | 4,584,477 |  
|Cash and cash equivalents                                                                                                                                                                                                                                                                                                                                 |  |                | 44,368    |   |                   |   | 11,719    |  
|Accounts and other receivables, net of allowance for doubtful accounts of $2,331 and $3,250 as of March 31, 2011 and
December 31, 2010, respectively                                                                                                                                                                                                      |  |                | 78,992    |   |                   |   | 70,337    |  
|Deferred rent                                                                                                                                                                                                                                                                                                                                             |  |                | 203,708   |   |                   |   | 190,067   |  
|Acquired above market leases, net                                                                                                                                                                                                                                                                                                                         |  |                | 37,421    |   |                   |   | 40,539    |  
|Acquired in place lease value and deferred leasing costs, net                                                                                                                                                                                                                                                                                             |  |                | 327,625   |   |                   |   | 334,366   |  
|Deferred financing costs, net                                                                                                                                                                                                                                                                                                                             |  |                | 23,836    |   |                   |   | 22,825    |  
|Restricted cash                                                                                                                                                                                                                                                                                                                                           |  |                | 59,836    |   |                   |   | 60,062    |  
|Other assets                                                                                                                                                                                                                                                                                                                                              |  |                | 26,855    |   |                   |   | 15,091    |  
|                                                                                                                                                                                                                                                                                                                                                          |  |                |           |   |                   |   |           |  
|Total assets                                                                                                                                                                                                                                                                                                                                              |  | $              | 5,537,345 |   |                   | $ | 5,329,483 |  
|                                                                                                                                                                                                                                                                                                                                                          |  |                |           |   |                   |   |           |  
|LIABILITIES AND CAPITAL                                                                                                                                                                                                                                                                                                                                   |  |                |           |   |                   |   |           |  
|Revolving credit facility                                                                                                                                                                                                                                                                                                                                 |  | $              | 209,687   |   |                   | $ | 333,534   |  
|Unsecured senior notes, net of discount                                                                                                                                                                                                                                                                                                                   |  |                | 1,465,351 |   |                   |   | 1,066,030 |  
|Exchangeable senior debentures, net of discount                                                                                                                                                                                                                                                                                                           |  |                | 318,669   |   |                   |   | 353,702   |  
|Mortgage loans, net of premiums                                                                                                                                                                                                                                                                                                                           |  |                | 1,051,222 |   |                   |   | 1,043,188 |  
|Other secured loan                                                                                                                                                                                                                                                                                                                                        |  |                | 10,500    |   |                   |   | 10,500    |  
|Accounts payable and other accrued liabilities                                                                                                                                                                                                                                                                                                            |  |                | 265,714   |   |                   |   | 237,631   |  
|Accrued dividends and distributions                                                                                                                                                                                                                                                                                                                       |  |                |          |   |                   |   | 51,210    |  
|Acquired below market leases, net                                                                                                                                                                                                                                                                                                                         |  |                | 89,018    |   |                   |   | 93,250    |  
|Security deposits and prepaid rents                                                                                                                                                                                                                                                                                                                       |  |                | 88,111    |   |                   |   | 85,775    |  
|                                                                                                                                                                                                                                                                                                                                                          |  |                |           |   |                   |   |           |  
|Total liabilities                                                                                                                                                                                                                                                                                                                                         |  |                | 3,498,272 |   |                   |   | 3,274,820 |  
|Commitments and contingencies                                                                                                                                                                                                                                                                                                                             |  |                |           |   |                   |   |           |  
|Capital:                                                                                                                                                                                                                                                                                                                                                  |  |                |           |   |                   |   |           |  
|Partners capital:                                                                                                                                                                                                                                                                                                                                        |  |                |           |   |                   |   |           |  
|General Partner:                                                                                                                                                                                                                                                                                                                                          |  |                |           |   |                   |   |           |  
|6,699,955 and 6,999,955 Series C Cumulative Convertible preferred units issued and outstanding, respectively, 13,644,790 and
13,787,300 Series D Cumulative Convertible preferred units issued and outstanding, respectively, all with a $25.00 liquidation preference per preferred unit (liquidation preference of $508,619 and $519,681, respectively) |  |                | 491,651   |   |                   |   | 502,341   |  
|92,078,429 and 91,159,221 common units issued and outstanding, respectively                                                                                                                                                                                                                                                                               |  |                | 1,475,714 |   |                   |   | 1,502,258 |  
|Limited partners, 3,810,814 and 3,937,827 common units, 1,133,484 and 982,618 profits interest units and 532,510 and 543,004
class C units outstanding as of March 31, 2011 and December 31, 2010, respectively                                                                                                                                           |  |                | 58,462    |   |                   |   | 56,215    |  
|Accumulated other comprehensive loss                                                                                                                                                                                                                                                                                                                      |  |                | (26,363   | ) |                   |   | (45,860   | )
|                                                                                                                                                                                                                                                                                                                                                          |  |                |           |   |                   |   |           |  
|Total partners capital                                                                                                                                                                                                                                                                                                                                   |  |                | 1,999,464 |   |                   |   | 2,014,954 |  
|Noncontrolling interests in consolidated joint ventures                                                                                                                                                                                                                                                                                                   |  |                | 39,609    |   |                   |   | 39,709    |  
|                                                                                                                                                                                                                                                                                                                                                          |  |                |           |   |                   |   |           |  
|Total capital                                                                                                                                                                                                                                                                                                                                             |  |                | 2,039,073 |   |                   |   | 2,054,663 |  
|                                                                                                                                                                                                                                                                                                                                                          |  |                |           |   |                   |   |           |  
|Total liabilities and capital                                                                                                                                                                                                                                                                                                                             |  | $              | 5,537,345 |   |                   | $ | 5,329,483 |  
|                                                                                                                                                                                                                                                                                                                                                          |  |                |           |   |                   |   |           |  

See accompanying notes to the condensed consolidated financial statements.



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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

CONDENSED CONSOLIDATED INCOME STATEMENTS

(unaudited, in thousands, except unit and per unit data)



|                                                                                 |  |                              |            |   |      |   |            |  
|-------------------------------------------------------------------------------- |  | ---------------------------- | ---------- | - | ---- | - | ---------- | -
|                                                                                 |  | Three Months Ended March 31, |           
|                                                                                 |  | 2011                         |            |   | 2010 |  
|Operating Revenues:                                                              |  |                              |            |   |      |   |            |  
|Rental                                                                           |  | $                            | 196,795    |   |      | $ | 151,306    |  
|Tenant reimbursements                                                            |  |                              | 51,834     |   |      |   | 39,059     |  
|Construction management                                                          |  |                              | 1,817      |   |      |   | 1,414      |  
|Other                                                                            |  |                              | 295        |   |      |   |           |  
|                                                                                 |  |                              |            |   |      |   |            |  
|Total operating revenues                                                         |  |                              | 250,741    |   |      |   | 191,779    |  
|                                                                                 |  |                              |            |   |      |   |            |  
|Operating Expenses:                                                              |  |                              |            |   |      |   |            |  
|Rental property operating and maintenance                                        |  |                              | 71,723     |   |      |   | 52,595     |  
|Property taxes                                                                   |  |                              | 13,471     |   |      |   | 12,721     |  
|Insurance                                                                        |  |                              | 2,051      |   |      |   | 1,735      |  
|Construction management                                                          |  |                              | 1,737      |   |      |   | 647        |  
|Depreciation and amortization                                                    |  |                              | 73,918     |   |      |   | 57,532     |  
|General and administrative                                                       |  |                              | 12,405     |   |      |   | 10,519     |  
|Transactions                                                                     |  |                              | 681        |   |      |   | 833        |  
|Other                                                                            |  |                              | 90         |   |      |   | 2          |  
|                                                                                 |  |                              |            |   |      |   |            |  
|Total operating expenses                                                         |  |                              | 176,076    |   |      |   | 136,584    |  
|                                                                                 |  |                              |            |   |      |   |            |  
|Operating income                                                                 |  |                              | 74,665     |   |      |   | 55,195     |  
|                                                                                 |  |                             
|Other Income (Expenses):                                                         |  |                              |            |   |      |   |            |  
|Equity in earnings of unconsolidated joint ventures                              |  |                              | 1,208      |   |      |   | 1,978      |  
|Interest and other income                                                        |  |                              | 264        |   |      |   | 31         |  
|Interest expense                                                                 |  |                              | (36,082    | ) |      |   | (30,902    | )
|Tax expense                                                                      |  |                              | (428       | ) |      |   | (716       | )
|Loss from early extinguishment of debt                                           |  |                              | (615       | ) |      |   |           |  
|                                                                                 |  |                              |            |   |      |   |            |  
|Net income                                                                       |  |                              | 39,012     |   |      |   | 25,586     |  
|Net loss attributable to noncontrolling interests in consolidated joint ventures |  |                              | 142        |   |      |   | 232        |  
|                                                                                 |  |                              |            |   |      |   |            |  
|Net income attributable to Digital Realty Trust, L.P.                            |  |                              | 39,154     |   |      |   | 25,818     |  
|                                                                                 |  |                             
|Preferred units distributions                                                    |  |                              | (6,522     | ) |      |   | (10,101    | )
|                                                                                 |  |                              |            |   |      |   |            |  
|Net income available to common unitholders                                       |  | $                            | 32,632     |   |      | $ | 15,717     |  
|                                                                                 |  |                              |            |   |      |   |            |  
|Net income per unit available to common unitholders:                             |  |                              |            |   |      |   |            |  
|Basic                                                                            |  | $                            | 0.34       |   |      | $ | 0.19       |  
|Diluted                                                                          |  | $                            | 0.33       |   |      | $ | 0.18       |  
|                                                                                 |  |                              |            |   |      |   |            |  
|Weighted average common units outstanding:                                       |  |                              |            |   |      |   |            |  
|Basic                                                                            |  |                              | 96,302,608 |   |      |   | 83,233,100 |  
|Diluted                                                                          |  |                              | 97,474,468 |   |      |   | 86,204,519 |  

See accompanying notes
to the condensed consolidated financial statements.



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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENT OF CAPITAL

(unaudited, in thousands, except unit data)



|                                                                                                          |  |                 |            |   |                  |   |         |                                   |  |  |                                                       |  |  |       |           |   |        |  |           |   |  |               |        |   |  |   |         |   |  |   |        |   |  |   |           |  
|--------------------------------------------------------------------------------------------------------- |  | --------------- | ---------- | - | ---------------- | - | ------- | --------------------------------- |  |  | ----------------------------------------------------- |  |  | ----- | --------- | - | ------ |  | --------- | - |  | ------------- | ------ | - |  | - | ------- | - |  | - | ------ | - |  | - | --------- | -
|                                                                                                          |  | General Partner |            |   | Limited Partners |   |         | AccumulatedOtherComprehensiveLoss |  |  | NoncontrollingInterests in
Consolidated JointVentures |  |  |       |          
|                                                                                                          |  | Preferred Units |            |   | Common Units     |   |         | Common Units                      |  |  |                                                       |  |  |      
|                                                                                                          |  | Units           |            |   | Amount           |   |         | Units                             |  |  | Amount                                                |  |  | Units |           |   | Amount |  |           |   |  | Total Capital |       
|Balance as of December 31, 2010                                                                           |  |                 | 20,787,255 |   |                  | $ | 502,341 |                                   |  |  | 91,159,221                                            |  |  | $     | 1,502,258 |   |        |  | 5,463,449 |   |  | $             | 56,215 |   |  | $ | (45,860 | ) |  | $ | 39,709 |   |  | $ | 2,054,663 |  
|                                                                                                          |  |                 |            |   |                  |   |         |                                   |  |  |                                                       |  |  |       |           |   |        |  |           |   |  |               |        |   |  |   |         |   |  |   |        |   |  |   |           |  
|Conversion of limited partner common units to general partner common units                                |  |                 |           |   |                  |   |        |                                   |  |  | 164,176                                               |  |  |       | 1,815     |   |        |  | (164,176  | ) |  |               | (1,815 | ) |  |   |        |   |  |   |       |   |  |   |          |  
|Issuance of restricted common units, net of forfeitures                                                   |  |                 |           |   |                  |   |        |                                   |  |  | 84,204                                                |  |  |       |          |   |        |  |          |   |  |               |       |   |  |   |        |   |  |   |       |   |  |   |          |  
|Net proceeds from issuance of common units                                                                |  |                 |           |   |                  |   |        |                                   |  |  | 98,100                                                |  |  |       | 5,597     |   |        |  |          |   |  |               |       |   |  |   |        |   |  |   |       |   |  |   | 5,597     |  
|Issuance of common units in connection with the exercise of stock options                                 |  |                 |           |   |                  |   |        |                                   |  |  | 23,232                                                |  |  |       | 866       |   |        |  |          |   |  |               |       |   |  |   |        |   |  |   |       |   |  |   | 866       |  
|Issuance of common units                                                                                  |  |                 |           |   |                  |   |        |                                   |  |  |                                                      |  |  |       |          |   |        |  | 177,535   |   |  |               |       |   |  |   |        |   |  |   |       |   |  |   |          |  
|Issuance of common units in exchange for debentures                                                       |  |                 |           |   |                  |   |        |                                   |  |  | 303,073                                               |  |  |       | (11,477   | ) |        |  |          |   |  |               |       |   |  |   |        |   |  |   |       |   |  |   | (11,477   | )
|Conversion of preferred units                                                                             |  |                 | (442,510   | ) |                  |   | (10,690 | )                                 |  |  | 246,423                                               |  |  |       | 10,690    |   |        |  |          |   |  |               |       |   |  |   |        |   |  |   |       |   |  |   |          |  
|Amortization of unearned compensation regarding share based awards                                        |  |                 |           |   |                  |   |        |                                   |  |  |                                                      |  |  |       | 3,647     |   |        |  |          |   |  |               |       |   |  |   |        |   |  |   |       |   |  |   | 3,647     |  
|Reclassification of vested share based awards                                                             |  |                 |           |   |                  |   |        |                                   |  |  |                                                      |  |  |       | (6,203    | ) |        |  |          |   |  |               | 6,203  |   |  |   |        |   |  |   |       |   |  |   |          |  
|Distributions                                                                                             |  |                 |           |   |                  |   | (6,522  | )                                 |  |  |                                                      |  |  |       | (62,459   | ) |        |  |          |   |  |               | (3,793 | ) |  |   |        |   |  |   |       |   |  |   | (72,774   | )
|Contributions from noncontrolling interests in consolidated joint ventures                                |  |                 |           |   |                  |   |        |                                   |  |  |                                                      |  |  |       |          |   |        |  |          |   |  |               |       |   |  |   |        |   |  |   | 42     |   |  |   | 42        |  
|Net income                                                                                                |  |                 |           |   |                  |   | 6,522   |                                   |  |  |                                                      |  |  |       | 30,980    |   |        |  |          |   |  |               | 1,652  |   |  |   |        |   |  |   | (142   | ) |  |   | 39,012    |  
|Other comprehensive income - foreign currency translation adjustments                                     |  |                 |           |   |                  |   |        |                                   |  |  |                                                      |  |  |       |          |   |        |  |          |   |  |               |       |   |  |   | 16,406  |   |  |   |       |   |  |   | 16,406    |  
|Other comprehensive income - fair value of interest rate swaps                                            |  |                 |           |   |                  |   |        |                                   |  |  |                                                      |  |  |       |          |   |        |  |          |   |  |               |       |   |  |   | 1,506   |   |  |   |       |   |  |   | 1,506     |  
|Other comprehensive income - reclassification of accumulated other comprehensive loss to interest expense |  |                 |           |   |                  |   |        |                                   |  |  |                                                      |  |  |       |          |   |        |  |          |   |  |               |       |   |  |   | 1,585   |   |  |   |       |   |  |   | 1,585     |  
|                                                                                                          |  |                 |            |   |                  |   |         |                                   |  |  |                                                       |  |  |       |           |   |        |  |           |   |  |               |        |   |  |   |         |   |  |   |        |   |  |   |           |  
|Balance as of March 31, 2011                                                                              |  |                 | 20,344,745 |   |                  | $ | 491,651 |                                   |  |  | 92,078,429                                            |  |  | $     | 1,475,714 |   |        |  | 5,476,808 |   |  | $             | 58,462 |   |  | $ | (26,363 | ) |  | $ | 39,609 |   |  | $ | 2,039,073 |  
|                                                                                                          |  |                 |            |   |                  |   |         |                                   |  |  |                                                       |  |  |       |           |   |        |  |           |   |  |               |        |   |  |   |         |   |  |   |        |   |  |   |           |  

See accompanying notes to the condensed consolidated financial statements.



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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(unaudited, in thousands, except unit data)



|                                                              |  |                              |        |  |      |   |         |  
|------------------------------------------------------------- |  | ---------------------------- | ------ |  | ---- | - | ------- | -
|                                                              |  | Three months ended March 31, |       
|                                                              |  | 2011                         |        |  | 2010 |  
|Net income                                                    |  | $                            | 39,012 |  |      | $ | 25,586  |  
|                                                              |  |                             
|Other comprehensive income (loss):                            |  |                              |        |  |      |   |         |  
|Foreign currency translation adjustments                      |  |                              | 16,406 |  |      |   | (18,287 | )
|Increase (decrease) in fair value of interest rate swaps      |  |                              | 1,506  |  |      |   | (4,276  | )
|Reclassification to interest expense from interest rate swaps |  |                              | 1,585  |  |      |   | 1,659   |  
|                                                              |  |                              |        |  |      |   |         |  
|                                                              |  |                             
|Comprehensive income                                          |  | $                            | 58,509 |  |      | $ | 4,682   |  
|                                                              |  |                              |        |  |      |   |         |  

See accompanying notes to the condensed consolidated financial statements.



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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited, in thousands)



|                                                                                                            |  |                              |          |   |      |   |          |  
|----------------------------------------------------------------------------------------------------------- |  | ---------------------------- | -------- | - | ---- | - | -------- | -
|                                                                                                            |  | Three Months Ended March 31, |         
|                                                                                                            |  | 2011                         |          |   | 2010 |  
|Cash flows from operating activities:                                                                       |  |                              |          |   |      |   |          |  
|                                                                                                            |  |                             
|Net income                                                                                                  |  | $                            | 39,012   |   |      | $ | 25,586   |  
|Adjustments to reconcile net income to net cash provided by operating activities                            |  |                              |          |   |      |   |          |  
|                                                                                                            |  |                             
|Loss on early extinguishment of debt-non cash portion                                                       |  |                              | 519      |   |      |   |         |  
|Equity in earnings of unconsolidated joint ventures                                                         |  |                              | (1,208   | ) |      |   | (1,978   | )
|Distributions from unconsolidated joint ventures                                                            |  |                              | 1,000    |   |      |   | 1,000    |  
|Write-off of net assets due to early lease terminations                                                     |  |                              | 90       |   |      |   | 2        |  
|Depreciation and amortization of buildings and improvements, tenant improvements and acquired ground leases |  |                              | 57,559   |   |      |   | 46,025   |  
|Amortization of share-based unearned compensation                                                           |  |                              | 3,022    |   |      |   | 2,695    |  
|Allowance for (recovery of) doubtful accounts                                                               |  |                              | (919     | ) |      |   | 106      |  
|Amortization of deferred financing costs                                                                    |  |                              | 2,451    |   |      |   | 2,406    |  
|Write-off of deferred financing costs, included in net loss on early extinguishment of debt                 |  |                              | 79       |   |      |   |         |  
|Amortization of debt discount/premium                                                                       |  |                              | 786      |   |      |   | 1,095    |  
|Amortization of acquired in place lease value and deferred leasing costs                                    |  |                              | 16,359   |   |      |   | 11,507   |  
|Amortization of acquired above market leases and acquired below market leases, net                          |  |                              | (1,814   | ) |      |   | (2,283   | )
|Changes in assets and liabilities:                                                                          |  |                              |          |   |      |   |         |  
|Restricted cash                                                                                             |  |                              | 381      |   |      |   | (1,734   | )
|Accounts and other receivables                                                                              |  |                              | (5,841   | ) |      |   | (9,415   | )
|Deferred rent                                                                                               |  |                              | (12,749  | ) |      |   | (11,111  | )
|Deferred leasing costs                                                                                      |  |                              | (4,591   | ) |      |   | (5,132   | )
|Other assets                                                                                                |  |                              | (10,730  | ) |      |   | (8,179   | )
|Accounts payable and other accrued liabilities                                                              |  |                              | (20,289  | ) |      |   | (746     | )
|Security deposits and prepaid rents                                                                         |  |                              | 1,372    |   |      |   | 7,356    |  
|                                                                                                            |  |                              |          |   |      |   |          |  
|Net cash provided by operating activities                                                                   |  |                              | 64,489   |   |      |   | 57,200   |  
|                                                                                                            |  |                              |          |   |      |   |          |  
|Cash flows from investing activities:                                                                       |  |                              |          |   |      |   |          |  
|                                                                                                            |  |                             
|Acquisitions of properties                                                                                  |  |                              |         |   |      |   | (375,000 | )
|Investment in unconsolidated joint ventures                                                                 |  |                              | (119     | ) |      |   |         |  
|Deposits paid for acquisitions of properties                                                                |  |                              | (1,294   | ) |      |   |         |  
|Receipt of value added tax refund                                                                           |  |                              | 1,201    |   |      |   | 916      |  
|Refundable value added tax paid                                                                             |  |                              | (1,009   | ) |      |   | (1,115   | )
|Change in restricted cash                                                                                   |  |                              | (67      | ) |      |   | (588     | )
|Improvements to investments in real estate                                                                  |  |                              | (135,110 | ) |      |   | (66,877  | )
|Improvement advances to tenants                                                                             |  |                              | (1,346   | ) |      |   | (114     | )
|Collection of advances from tenants for improvements                                                        |  |                              | 187      |   |      |   | 23       |  
|                                                                                                            |  |                              |          |   |      |   |          |  
|Net cash used in investing activities                                                                       |  |                              | (137,557 | ) |      |   | (442,755 | )
|                                                                                                            |  |                              |          |   |      |   |          |  

See accompanying notes to the condensed consolidated financial statements.



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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (continued)

(unaudited, in thousands)



|                                                                                                                                      |  |                              |          |   |      |   |          |  
|------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------- | -------- | - | ---- | - | -------- | -
|                                                                                                                                      |  | Three Months Ended March 31, |         
|                                                                                                                                      |  | 2011                         |          |   | 2010 |  
|Cash flows from financing activities:                                                                                                 |  |                              |          |   |      |   |          |  
|                                                                                                                                      |  |                             
|Borrowings on revolving credit facility                                                                                               |  | $                            | 260,873  |   |      | $ | 270,000  |  
|Repayments on revolving credit facility                                                                                               |  |                              | (382,500 | ) |      |   | (475,547 | )
|Borrowings on unsecured senior notes                                                                                                  |  |                              |         |   |      |   | 117,000  |  
|Borrowings on 5.875% unsecured senior notes due 2020                                                                                  |  |                              |         |   |      |   | 491,480  |  
|Borrowings on 5.250% unsecured senior notes due 2021                                                                                  |  |                              | 399,100  |   |      |   |         |  
|Principal payments on mortgage loans                                                                                                  |  |                              | (3,900   | ) |      |   | (3,255   | )
|Principal repayments on 2026 exchanagable senior debentures                                                                           |  |                              | (35,850  | ) |      |   |         |  
|Equity component settled associated with exchange of 2026 exchangeable senior debentures                                              |  |                              | (11,783  | ) |      |   |         |  
|Change in restricted cash                                                                                                             |  |                              | 625      |   |      |   | (13      | )
|Payment of loan fees and costs                                                                                                        |  |                              | (3,369   | ) |      |   | (4,944   | )
|Capital contributions received from noncontrolling interests in joint ventures                                                        |  |                              | 42       |   |      |   | 52       |  
|General partner contributions                                                                                                         |  |                              | 6,463    |   |      |   | 56,519   |  
|Payment of distributions to preferred unitholders                                                                                     |  |                              | (6,522   | ) |      |   | (10,101  | )
|Payment of distributions to common unitholders                                                                                        |  |                              | (117,462 | ) |      |   | (77,147  | )
|                                                                                                                                      |  |                              |          |   |      |   |          |  
|Net cash provided by financing activities                                                                                             |  |                              | 105,717  |   |      |   | 364,044  |  
|                                                                                                                                      |  |                              |          |   |      |   |          |  
|Net increase (decrease) in cash and cash equivalents                                                                                  |  |                              | 32,649   |   |      |   | (21,511  | )
|                                                                                                                                      |  |                             
|Cash and cash equivalents at beginning of period                                                                                      |  |                              | 11,719   |   |      |   | 72,320   |  
|                                                                                                                                      |  |                              |          |   |      |   |          |  
|Cash and cash equivalents at end of period                                                                                            |  | $                            | 44,368   |   |      | $ | 50,809   |  
|                                                                                                                                      |  |                              |          |   |      |   |          |  
|Supplemental disclosure of cash flow information:                                                                                     |  |                              |          |   |      |   |          |  
|Cash paid for interest, including amounts capitalized                                                                                 |  | $                            | 45,208   |   |      | $ | 22,231   |  
|Cash paid for taxes                                                                                                                   |  |                              | 87       |   |      |   | 174      |  
|                                                                                                                                      |  |                             
|Supplementary disclosure of noncash investing and financing activities:                                                               |  |                              |          |   |      |   |          |  
|                                                                                                                                      |  |                             
|Change in net assets related to foreign currency translation adjustments                                                              |  | $                            | 16,406   |   |      | $ | (18,287  | )
|Decrease (increase) in accounts payable and other accrued liabilities related to change in fair value of interest rate
swaps          |  |                              | 1,506    |   |      |   | (4,276   | )
|Accrual for additions to investments in real estate and tenant improvement advances included in accounts payable and accrued
expenses |  |                              | 134,693  |   |      |   | 71,527   |  
|Issuance of common stock in exchange of 2026 exchangeable senior debentures, net                                                      |  |                              | 194      |   |      |   |         |  
|                                                                                                                                      |  |                             
|Allocation of purchase price of properties/investment in partnership to:                                                              |  |                              |          |   |      |   |          |  
|                                                                                                                                      |  |                             
|Investments in real estate                                                                                                            |  |                              |         |   |      |   | 346,436  |  
|Other assets                                                                                                                          |  |                              |         |   |      |   |         |  
|Acquired above market leases                                                                                                          |  |                              |         |   |      |   | 9,714    |  
|Acquired below market leases                                                                                                          |  |                              |         |   |      |   | (26,450  | )
|Acquired in place lease value and deferred leasing costs                                                                              |  |                              |         |   |      |   | 45,300   |  
|                                                                                                                                      |  |                              |          |   |      |   |          |  
|Cash paid for acquisition of properties                                                                                               |  | $                            |         |   |      | $ | 375,000  |  
|                                                                                                                                      |  |                              |          |   |      |   |          |  

See accompanying notes to the condensed consolidated financial statements.



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

March 31, 2011
and 2010

(unaudited)

1. Organization and Description of Business

Digital Realty Trust, Inc. through its controlling interest in Digital Realty Trust, L.P. (the Operating Partnership) and the subsidiaries of the Operating Partnership (collectively, we, our, us or the
Company) is engaged in the business of owning, acquiring, developing, redeveloping and managing technology-related real estate. The Company is focused on providing Turn-Key Datacenter® and Powered Base Building®
datacenter solutions for domestic and international tenants across a variety of industry verticals ranging from information technology and Internet enterprises, to manufacturing and financial services. As of March 31, 2011, our portfolio
consisted of 96 properties, excluding two properties held as investments in unconsolidated joint ventures, of which 81 are located throughout North America, 14 are located in Europe and one is located in Asia. Our properties are diversified in major
markets where corporate datacenter and technology tenants are concentrated, including the Boston, Chicago, Dallas, Los Angeles, New York Metro, Northern Virginia, Phoenix, San Francisco and Silicon Valley metropolitan areas in the U.S., the
Amsterdam, Dublin, London and Paris markets in Europe and Singapore in Asia. The portfolio consists of Internet gateway and corporate datacenter properties, technology manufacturing properties and regional or national headquarters of technology
companies.

The Operating Partnership was formed on July 21, 2004 in anticipation of our initial public offering (IPO) on
November 3, 2004 and commenced operations on that date. As of March 31, 2011, we own a 94.4% common interest and a 100% preferred interest in the Operating Partnership. As sole general partner, we have control over the Operating
Partnership. The limited partners of the Operating Partnership do not have rights to replace us as the general partner nor do they have participating rights, although they do have certain protective rights.

2. Summary of Significant Accounting Policies

(a) Principles of Consolidation and Basis of Presentation

The accompanying interim
condensed consolidated financial statements include all of the accounts of Digital Realty Trust, Inc., the Operating Partnership and the subsidiaries of the Operating Partnership. Intercompany balances and transactions have been eliminated.

The accompanying interim condensed consolidated financial statements are unaudited, but have been prepared in accordance with U.S. generally
accepted accounting principles (U.S. GAAP) for interim financial information and in compliance with the rules and regulations of the United States Securities and Exchange Commission. Accordingly, they do not include all of the disclosures required
by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments necessary for a fair presentation have been included. All such adjustments are considered to be of a normal recurring nature, except as otherwise
indicated. The results of operations for the interim periods are not necessarily indicative of the results to be obtained for the full fiscal year. These condensed consolidated financial statements should be read in conjunction with the audited
consolidated financial statements and the notes thereto included in our annual report on Form 10-K for the year ended December 31, 2010.

The notes to the condensed consolidated financial statements of Digital Realty Trust, Inc. and the Operating Partnership have been combined to provide
the following benefits:



| |  |  | enhancing investors understanding of the Company and the Operating Partnership by enabling investors to view the business as a whole in the same
manner as management views and operates the business;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | eliminating duplicative disclosure and providing a more streamlined and readable presentation since a substantial portion of the disclosure applies to
both the Company and the Operating Partnership; and
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | creating time and cost efficiencies through the preparation of one set of notes instead of two separate sets of notes.
| | - |  | ----------------------------------------------------------------------------------------------------------------------

There are few differences between the Company and the Operating Partnership, which are reflected in these condensed consolidated financial statements. We
believe it is important to understand the differences between the Company and the Operating Partnership in the context of how Digital Realty Trust, Inc. and the Operating Partnership operate as an interrelated consolidated company. Digital Realty
Trust, Inc.s only material asset is its ownership of partnership interests of the Operating Partnership. As a result, Digital Realty Trust, Inc. does not conduct business itself, other than acting as the sole general partner of the Operating
Partnership, issuing public equity from time to time and guaranteeing certain unsecured debt of the Operating Partnership. Digital Realty Trust, Inc. itself does not hold any indebtedness but guarantees some of the unsecured debt of the Operating
Partnership, as disclosed in these notes. The Operating Partnership holds substantially all the assets of the Company and holds the ownership interests in the Companys joint ventures. The Operating Partnership conducts the operations of the
business and is structured as a



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



partnership with no publicly traded equity. Except for net proceeds from public equity issuances by Digital Realty Trust, Inc., which are generally contributed to the Operating Partnership in
exchange for partnership units, the Operating Partnership generates the capital required by the Companys business through the Operating Partnerships operations, by the Operating Partnerships direct or indirect incurrence of
indebtedness or through the issuance of partnership units.

The presentation of noncontrolling interests in operating partnership,
stockholders equity and partners capital are the main areas of difference between the condensed consolidated financial statements of Digital Realty Trust, Inc. and those of the Operating Partnership. The common limited partnership
interests held by the limited partners in the Operating Partnership are presented as limited partners capital within partners capital in the Operating Partnerships condensed consolidated financial statements and as noncontrolling
interests in operating partnership within equity in Digital Realty Trust, Inc.s condensed consolidated financial statements. The common and preferred partnership interests held by Digital Realty Trust, Inc. in the Operating Partnership are
presented as general partners capital within partners capital in the Operating Partnerships condensed consolidated financial statements and as preferred stock, common stock, additional paid-in capital and accumulated dividends in
excess of earnings within stockholders equity in Digital Realty Trust, Inc.s condensed consolidated financial statements. The differences in the presentations between stockholders equity and partners capital result from the
differences in the equity issued at the Digital Realty Trust, Inc. and the Operating Partnership levels.

To help investors understand the
significant differences between the Company and the Operating Partnership, these condensed consolidated financial statements present the following separate sections for each of the Company and the Operating Partnership:



| |  |  | condensed consolidated face financial statements; and
| | - |  | -----------------------------------------------------



| |  |  | the following notes to the condensed consolidated financial statements:
| | - |  | -----------------------------------------------------------------------



| |  |  | Debt;
| | - |  | -----



| |  |  | Equity of the Company and Capital of the Operating Partnership; and
| | - |  | -------------------------------------------------------------------



| |  |  | Income per Share and Income per Unit.
| | - |  | -------------------------------------

In the sections that combine disclosure of Digital Realty Trust, Inc. and the Operating Partnership, these notes refer to actions or holdings as being actions or holdings of the Company. Although the
Operating Partnership is generally the entity that enters into contracts and joint ventures and holds assets and debt, reference to the Company is appropriate because the business is one enterprise and the Company operates the business through the
Operating Partnership.

(b) Cash Equivalents

For the purpose of the condensed consolidated statements of cash flows, we consider short-term investments with original maturities of 90 days or less to be cash equivalents. As of March 31, 2011,
cash equivalents consist of investments in money market instruments.

(c) Share Based Compensation

We account for share based compensation using the fair value method of accounting. The estimated fair value of the stock options granted by us is being
amortized on a straight-line basis over the vesting period of the stock options. The estimated fair value of the long-term incentive units and Class C Units (discussed in note 12(b)) granted by us is being amortized on a straight-line basis over the
expected service period.

For share based compensation awards with performance conditions, we estimate the fair value of the award for each of
the possible performance condition outcomes and amortize the compensation cost based on managements projected performance outcome. In the instance managements projected performance outcome changes prior to the final measurement date,
compensation cost is adjusted accordingly.



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



(d) Income Taxes

Digital Realty Trust, Inc. (the Parent Company) has elected to be treated and believes that it has been organized and has operated in a manner that has enabled the Parent Company to qualify as a REIT for
federal income tax purposes. As a REIT, the Parent Company generally is not required to pay federal corporate income taxes on its taxable income to the extent it is currently distributed to its stockholders.

However, qualification and taxation as a REIT depend upon the Parent Companys ability to meet the various qualification tests imposed under the
Internal Revenue Code of 1986, as amended (the Code), including tests related to annual operating results, asset composition, distribution levels and diversity of stock ownership. Accordingly, no assurance can be given that the Parent Company has
been organized or has operated or will continue to operate in a manner so as to qualify or remain qualified as a REIT. If the Parent Company fails to qualify as a REIT in any taxable year, it will be subject to federal income tax (including any
applicable alternative minimum tax) on its taxable income at regular corporate tax rates.

The Operating Partnership is a partnership and is
not required to pay federal income tax. Instead, taxable income is allocated to its partners, who include such amounts on their federal income tax returns. As such, no provision for federal income taxes has been included in the Operating
Partnerships accompanying condensed consolidated financial statements.

Even if the Parent Company and the Operating Partnership are not
subject to federal income taxes, they are taxed in certain states in which they operate. The Company is also taxed in non-U.S. countries where it operates that do not recognize U.S. REITs under their respective tax laws. The Companys
consolidated taxable REIT subsidiary is subject to both federal and state income taxes to the extent there is taxable income. Accordingly, the Company recognizes and accrues income taxes for its taxable REIT subsidiary, certain states and
non-U.S. jurisdictions, as appropriate.

We assess our significant tax positions in accordance with U.S. GAAP for all open tax years and
determine whether we have any material unrecognized liabilities from uncertain tax benefits. If a tax position is not considered more-likely-than-not to be sustained solely on its technical merits, no benefits of the tax position are to
be recognized (for financial statement purposes). As of March 31, 2011 and December 31, 2010, we have no assets or liabilities for uncertain tax positions. We classify interest and penalties from significant uncertain tax positions as
interest expense and operating expense, respectively, in our condensed consolidated statements of operations. For the three months ended March 31, 2011 and 2010, we had no such interest or penalties. The tax years 2007 through 2010 remain open
to examination by the major taxing jurisdictions with which the Parent Company and its subsidiaries file tax returns.

See Note 9 for further
discussion on income taxes.

(e) Presentation of Transactional-based Taxes

We account for transactional-based taxes, such as value added tax, or VAT, for our international properties on a net basis.

(f) Asset Retirement Obligations

We record accruals for estimated retirement obligations as required by current accounting guidance. The amount of asset retirement obligations relates primarily to estimated asbestos removal costs at the
end of the economic life of properties that were built before 1984. As of March 31, 2011 and December 31, 2010, the amount included in accounts payable and other accrued liabilities on our condensed consolidated balance sheets was
approximately $1.3 million.

(g) Assets and Liabilities Measured at Fair Value

Fair value under U.S. GAAP is a market-based measurement, not an entity-specific measurement. Therefore, our fair value measurements are determined based
on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair-value measurements, we use a fair-value hierarchy that distinguishes between market
participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entitys own assumptions about market
participant assumptions (unobservable inputs classified within Level 3 of the hierarchy).

Level 1 inputs utilize quoted prices
(unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either
directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates, foreign
exchange rates, and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability, which are typically based on an entitys own assumptions, as there is little, if any, related
market activity. In instances where the determination of the fair-value measurement is based on inputs from different levels of the fair-value hierarchy, the level in the fair-value hierarchy within which the entire fair-value measurement falls is
based on the lowest level input that is significant to the fair-value measurement in its entirety. Our assessment of the significance of a particular input to the fair-value measurement in its entirety requires judgment, and considers factors
specific to the asset or liability.



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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



(h) Construction Management Revenue

Construction management revenue is recognized under the percentage-of-completion method of accounting. Revenues are determined by measuring the percentage
of costs incurred to date to estimated total costs for each construction management contract based on current estimates of costs to complete. Contract costs include all labor and benefits, materials, subcontracts, and an allocation of indirect costs
related to contract performance. Indirect costs are allocated to projects based upon labor hours charged. As long-term design-build projects extend over one or more years, revisions in cost and estimated earnings during the course of the work are
reflected in the accounting period in which the facts which require the revision become known. At the time a loss on a design-build project becomes known, the entire amount of the estimated ultimate loss is recognized in the condensed consolidated
financial statements. Change orders are recognized when they are approved by the client.

Costs and estimated earnings in excess of billings
on uncompleted construction management projects are included in other assets in the condensed consolidated balance sheets. Billings in excess of costs and estimated earnings on uncompleted construction management projects are included in accounts
payable and accrued liabilities in the condensed consolidated balance sheets. Customers are billed on a monthly basis at the end of each month, which can be in advance of work performed. As a result, we typically generate billings in excess of costs
and estimated earnings on construction management projects.

(i) Transactions Expense

Transactions expense includes acquisition-related expenses and other business development expenses, which are expensed as
incurred. Acquisition-related expenses include closing costs, broker commissions and other professional fees, including legal and accounting fees related to acquisitions and potential acquisitions.

(j) Managements Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of
contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates made. On an on-going
basis, we evaluate our estimates, including those related to acquiring, developing and assessing the carrying values of our real estate properties, accrued liabilities, performance-based equity compensation plans, and Digital Realty Trust,
Inc.s qualification as a REIT. We base our estimates on historical experience, current market conditions, and various other assumptions that are believed to be reasonable under the circumstances. Actual results may vary from those estimates
and those estimates could vary under different assumptions or conditions.

(k) Segment Information

All of our properties generate similar revenues and expenses related to tenant rent and reimbursements and operating expenses. The delivery of our
products is consistent across all properties and although services are provided to a wide range of customers, the types of services provided to them are limited to a few core principles. As such, the properties in our portfolio have similar economic
characteristics and the nature of the products and services provided to our customers and the method to distribute such services are consistent throughout the portfolio. Consequently, our properties qualify for aggregation into one reporting
segment.

(l) Reclassifications

Certain reclassifications to prior year amounts have been made to conform to the current year presentation. During the three months ended March 31, 2010, $1.4 million was reclassified from rental
revenue to construction management revenue and $0.6 million was reclassified from rental property operating and maintenance expense to construction management expense.

3. Acquisitions

We acquired no real estate properties during the three months ended March 31, 2011.



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



4. Acquired Intangible Assets and Liabilities

The following summarizes our acquired intangible assets (acquired in place lease value and acquired above-market lease value) and intangible liabilities (acquired below-market lease value) as of
March 31, 2011 and December 31, 2010.



|                                   |  |               |          |   |                  |   |          |  
|---------------------------------- |  | ------------- | -------- | - | ---------------- | - | -------- | -
|                                   |  | Balance as of |         
|(Amounts in thousands)             |  | March 31,2011 |          |   | December 31,2010 |  
|Acquired in place lease value:     |  |               |          |   |                  |   |          |  
|Gross amount                       |  | $             | 517,698  |   |                  | $ | 515,958  |  
|Accumulated amortization           |  |               | (277,074 | ) |                  |   | (261,978 | )
|                                   |  |               |          |   |                  |   |          |  
|Net                                |  | $             | 240,624  |   |                  | $ | 253,980  |  
|                                   |  |               |          |   |                  |   |          |  
|Acquired above-market lease value: |  |               |          |   |                  |   |          |  
|Gross amount                       |  | $             | 87,974   |   |                  | $ | 87,622   |  
|Accumulated amortization           |  |               | (50,553  | ) |                  |   | (47,083  | )
|                                   |  |               |          |   |                  |   |          |  
|Net                                |  | $             | 37,421   |   |                  | $ | 40,539   |  
|                                   |  |               |          |   |                  |   |          |  
|Acquired below-market lease value: |  |               |          |   |                  |   |          |  
|Gross amount                       |  | $             | 191,370  |   |                  | $ | 189,990  |  
|Accumulated amortization           |  |               | (102,352 | ) |                  |   | (96,740  | )
|                                   |  |               |          |   |                  |   |          |  
|Net                                |  | $             | 89,018   |   |                  | $ | 93,250   |  
|                                   |  |               |          |   |                  |   |          |  

Amortization of acquired below-market lease value, net of acquired above-market lease value, resulted in an increase to
rental revenues of $1.8 million and $2.3 million for the three months ended March 31, 2011 and 2010, respectively. The expected average



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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



remaining lives for acquired below-market leases and acquired above-market leases is 5.0 years and 3.8 years, respectively, as of March 31, 2011. Estimated annual amortization of acquired
below-market lease value, net of acquired above-market lease value, for each of the five succeeding years, commencing January 1, 2012 is as follows:



|                       |  |   |       | 
|---------------------- |  | - | ----- | 
|(Amounts in thousands) |  |   |      
|2012                   |  | $ | 6,520 | 
|2013                   |  |   | 7,090 | 
|2014                   |  |   | 5,729 | 
|2015                   |  |   | 5,060 | 
|2016                   |  |   | 4,180 | 

Costs associated with extending or
renewing acquired leases are capitalized as exercised and classified as deferred leasing cost. Amortization of acquired in place lease value (a component of depreciation and amortization expense) was $14.3 million and $9.9 million for the three
months ended March 31, 2011 and 2010, respectively. The expected average amortization period for acquired in place lease value is 4.7 years as of March 31, 2011. The weighted average period prior to the next renewal of extension related to
remaining contractual life for acquired leases is 4.1 years as of March 31, 2011. Estimated annual amortization of acquired in place lease value for each of the five succeeding years, commencing January 1, 2012 is as follows:



|                       |  |   |        | 
|---------------------- |  | - | ------ | 
|(Amounts in thousands) |  |   |       
|2012                   |  | $ | 42,254 | 
|2013                   |  |   | 37,890 | 
|2014                   |  |   | 32,970 | 
|2015                   |  |   | 24,730 | 
|2016                   |  |   | 16,348 | 



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



5. Debt of the Company

In this Note 5, the Company refers only to Digital Realty Trust, Inc. and not to any of its subsidiaries.

The Company itself does not have any indebtedness. All debt is held directly or indirectly by the Operating Partnership.

Guarantee of Debt

The Company has guaranteed some of the Operating
Partnerships debt. The Company guarantees the Operating Partnerships obligations with respect to the 2026 Debentures, the 2029 Debentures, the 2015 Notes, the 2020 Notes, the 2021 Notes (each, as defined in Note 6) and its unsecured
senior notes sold to Prudential pursuant to the Prudential shelf facility. The Company is also the guarantor of the Operating Partnerships obligations under its revolving credit facility.



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



6. Debt of the Operating Partnership

A summary of outstanding indebtedness of the Operating Partnership as of March 31, 2011 and December 31, 2010, respectively, is as follows (in thousands):



|                                                      |  |                                |             |  |               |  |                   |                                     |  |   |                                        |     |  |   |           |    
|----------------------------------------------------- |  | ------------------------------ | ----------- |  | ------------- |  | ----------------- | ----------------------------------- |  | - | -------------------------------------- | --- |  | - | --------- | ---
|Indebtedness                                          |  | Interest Rate atMarch 31, 2011 |             |  | Maturity Date |  |                   | Principal OutstandingMarch 31, 2011 |  |   | Principal OutstandingDecember 31, 2010 |    
|                                                      |  |                                |             | 
|Revolving credit facility                             |  |                                | Various (1) |  |               |  | Aug. 31, 2011 (2) |                                     |  | $ | 209,687                                | (3) |  | $ | 333,534   | (3)
|                                                      |  |                                |             |  |               |  |                   |                                     |  |   |                                        |     |  |   |           |    
|Unsecured senior notes:                               |  |                                |             |  |               |  |                   |                                     |  |   |                                        |     |  |   |           |    
|Prudential Shelf Facility:                            |  |                                |             |  |               |  |                   |                                     |  |   |                                        |     |  |   |           |    
|Series A                                              |  |                                | 7.000%      |  |               |  | Jul. 24, 2011     |                                     |  |   | 25,000                                 |     |  |   | 25,000    |    
|Series B                                              |  |                                | 9.320%      |  |               |  | Nov. 5, 2013      |                                     |  |   | 33,000                                 |     |  |   | 33,000    |    
|Series C                                              |  |                                | 9.680%      |  |               |  | Jan. 6, 2016      |                                     |  |   | 25,000                                 |     |  |   | 25,000    |    
|Series D                                              |  |                                | 4.570%      |  |               |  | Jan. 20, 2015     |                                     |  |   | 50,000                                 |     |  |   | 50,000    |    
|Series E                                              |  |                                | 5.730%      |  |               |  | Jan. 20, 2017     |                                     |  |   | 50,000                                 |     |  |   | 50,000    |    
|Series F                                              |  |                                | 4.500%      |  |               |  | Feb. 3, 2015      |                                     |  |   | 17,000                                 |     |  |   | 17,000    |    
|                                                      |  |                                |             |  |               |  |                   |                                     |  |   |                                        |     |  |   |           |    
|Total Prudential Shelf Facility                       |  |                                |             |  |               |  |                   |                                     |  |   | 200,000                                |     |  |   | 200,000   |    
|Senior Notes:                                         |  |                                |             |  |               |  |                   |                                     |  |   |                                        |     |  |   |           |    
|4.50% notes due 2015                                  |  |                                | 4.500%      |  |               |  | Jul. 15, 2015     |                                     |  |   | 375,000                                |     |  |   | 375,000   |    
|5.875% notes due 2020                                 |  |                                | 5.875%      |  |               |  | Feb. 1, 2020      |                                     |  |   | 500,000                                |     |  |   | 500,000   |    
|5.250% notes due 2021                                 |  |                                | 5.250%      |  |               |  | Mar. 15, 2021     |                                     |  |   | 400,000                                |     |  |   |          |    
|Unamortized discounts                                 |  |                                |             |  |               |  |                   |                                     |  |   | (9,649                                 | )   |  |   | (8,970    | )  
|                                                      |  |                                |             |  |               |  |                   |                                     |  |   |                                        |     |  |   |           |    
|Total senior notes, net of discount                   |  |                                |             |  |               |  |                   |                                     |  |   | 1,265,351                              |     |  |   | 866,030   |    
|                                                      |  |                                |             |  |               |  |                   |                                     |  |   |                                        |     |  |   |           |    
|Total unsecured senior notes, net of discount         |  |                                |             |  |               |  |                   |                                     |  |   | 1,465,351                              |     |  |   | 1,066,030 |    
|                                                      |  |                                |             |  |               |  |                   |                                     |  |   |                                        |     |  |   |           |    
|Exchangeable senior debentures:                       |  |                                |             |  |               |  |                   |                                     |  |   |                                        |     |  |   |           |    
|4.125% exchangeable senior debentures due 2026        |  |                                | 4.125%      |  |               |  | Aug. 15, 2026 (4) |                                     |  |   | 52,908                                 |     |  |   | 88,758    |    
|5.50% exchangeable senior debentures due 2029         |  |                                | 5.50%       |  |               |  | Apr. 15, 2029 (5) |                                     |  |   | 266,400                                |     |  |   | 266,400   |    
|Unamortized discount                                  |  |                                |             |  |               |  |                   |                                     |  |   | (639                                   | )   |  |   | (1,456    | )  
|                                                      |  |                                |             |  |               |  |                   |                                     |  |   |                                        |     |  |   |           |    
|Total exchangeable senior debentures, net of discount |  |                                |             |  |               |  |                   |                                     |  |   | 318,669                                |     |  |   | 353,702   |    



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



|                                          |  |                                 |                                |  |               |  |                   |                                     |  |   |                                        |          |  |   |           |     
|----------------------------------------- |  | ------------------------------- | ------------------------------ |  | ------------- |  | ----------------- | ----------------------------------- |  | - | -------------------------------------- | -------- |  | - | --------- | ----
|Indebtedness                              |  | Interest Rate atMarch 
31, 2011 |                                |  | Maturity Date |  |                   | Principal OutstandingMarch 31, 2011 |  |   | Principal OutstandingDecember 31, 2010 |         
|                                          |  |                                 |                                | 
|Mortgage loans:                           |  |                                 |                                |  |               |  |                   |                                     |  |   |                                        |          |  |   |           |     
|Secured Term Debt (6)(7)                  |  |                                 | 5.65%                          |  |               |  | Nov. 11, 2014     |                                     |  |   | 140,840                                |          |  |   | 141,465   |     
|3 Corporate Place (7)(8)                  |  |                                 | 6.72%                          |  |               |  | Aug. 1, 2011 (9)  |                                     |  |   | 80,000                                 |          |  |   | 80,000    |     
|200 Paul Avenue 1-4 (7)                   |  |                                 | 5.74%                          |  |               |  | Oct. 8, 2015      |                                     |  |   | 75,743                                 |          |  |   | 76,179    |     
|2045 & 2055 LaFayette Street (7)          |  |                                 | 5.93%                          |  |               |  | Feb. 6, 2017      |                                     |  |   | 66,207                                 |          |  |   | 66,437    |     
|Mundells Roundabout                       |  |                                 | 3-month GBP LIBOR + 1.20% (10) |  |               |  | Nov. 30, 2013     |                                     |  |   | 68,640                                 | (11)     |  |   | 66,858    | (11)
|600 West Seventh Street                   |  |                                 | 5.80%                          |  |               |  | Mar. 15, 2016     |                                     |  |   | 53,803                                 |          |  |   | 54,157    |     
|34551 Ardenwood Boulevard 1-4 (7)         |  |                                 | 5.95%                          |  |               |  | Nov. 11, 2016     |                                     |  |   | 54,129                                 |          |  |   | 54,306    |     
|1100 Space Park Drive (7)                 |  |                                 | 5.89%                          |  |               |  | Dec. 11, 2016     |                                     |  |   | 54,118                                 |          |  |   | 54,296    |     
|1350 Duane Avenue/3080 Raymond Street (7) |  |                                 | 5.42%                          |  |               |  | Oct. 1, 2012      |                                     |  |   | 52,800                                 |          |  |   | 52,800    |     
|150 South First Street (7)                |  |                                 | 6.30%                          |  |               |  | Feb. 6, 2017      |                                     |  |   | 51,985                                 |          |  |   | 52,154    |     
|114 Rue Ambroise Croizat                  |  |                                 | 3-month EURIBOR + 1.35% (10)   |  |               |  | Jan. 18, 2012     |                                     |  |   | 43,652                                 | (12)     |  |   | 41,430    | (12)
|Clonshaugh Industrial Estate II (8)       |  |                                 | 3-month EURIBOR + 4.50% (10)   |  |               |  | Sep. 4, 2014      |                                     |  |   | 42,474                                 | (12)     |  |   | 40,152    | (12)
|1500 Space Park Drive (7)                 |  |                                 | 6.15%                          |  |               |  | Oct. 5, 2013      |                                     |  |   | 39,428                                 |          |  |   | 39,941    |     
|2334 Lundy Place (7)                      |  |                                 | 5.96%                          |  |               |  | Nov. 11, 2016     |                                     |  |   | 39,367                                 |          |  |   | 39,496    |     
|Unit 9, Blanchardstown Corporate Park     |  |                                 | 3-month EURIBOR + 1.35% (10)   |  |               |  | Jan. 18, 2012     |                                     |  |   | 37,530                                 | (12)     |  |   | 35,620    | (12)
|Cressex 1 (14)                            |  |                                 | 5.68%                          |  |               |  | Oct. 16, 2014     |                                     |  |   | 29,021                                 | (11)     |  |   | 28,388    | (11)
|6 Braham Street (8)                       |  |                                 | 3-month GBP LIBOR + 0.90% (10) |  |               |  | Apr. 10, 2011     |                                     |  |   | 19,875                                 | (11)(16) |  |   | 19,515    | (11)
|1201 Comstock Street (7)(8)               |  |                                 | 1-month LIBOR + 3.50% (10)     |  |               |  | Jun. 24, 2012 (2) |                                     |  |   | 16,777                                 |          |  |   | 16,976    |     
|Datacenter Park  Dallas                  |  |                                 | 5.00%                          |  |               |  | Sep. 15, 2011 (2) |                                     |  |   | 16,150                                 |          |  |   | 16,150    |     
|Paul van Vlissingenstraat 16              |  |                                 | 3-month EURIBOR + 1.60% (10)   |  |               |  | Jul. 18, 2013     |                                     |  |   | 14,727                                 | (12)     |  |   | 13,978    | (12)
|Chemin de lEpinglier 2                   |  |                                 | 3-month EURIBOR + 1.50% (10)   |  |               |  | Jul. 18, 2013     |                                     |  |   | 10,655                                 | (12)     |  |   | 10,113    | (12)
|800 Central Expressway (7)                |  |                                 | 1-month LIBOR +4.75%           |  |               |  | Jun. 9, 2013      |                                     |  |   | 10,000                                 |          |  |   | 10,000    |     
|Gyroscoopweg 2E-2F (13)                   |  |                                 | 3-month EURIBOR + 1.50% (10)   |  |               |  | Oct. 18, 2013     |                                     |  |   | 9,377                                  | (12)     |  |   | 8,900     | (12)
|1125 Energy Park Drive (7)                |  |                                 | 7.62%(15)                      |  |               |  | Mar. 1, 2032      |                                     |  |   | 9,020                                  |          |  |   | 9,060     |     
|Manchester Technopark (14)                |  |                                 | 5.68%                          |  |               |  | Oct. 16, 2014     |                                     |  |   | 8,829                                  | (11)     |  |   | 8,636     | (11)
|731 East Trade Street                     |  |                                 | 8.22%                          |  |               |  | Jul. 1, 2020      |                                     |  |   | 5,014                                  |          |  |   | 5,080     |     
|Unamortized net premiums                  |  |                                 |                                |  |               |  |                   |                                     |  |   | 1,061                                  |          |  |   | 1,101     |     
|                                          |  |                                 |                                |  |               |  |                   |                                     |  |   |                                        |          |  |   |           |     
|Total mortgage loans, net of premiums     |  |                                 |                                |  |               |  |                   |                                     |  |   | 1,051,222                              |          |  |   | 1,043,188 |     
|Other secured loan:                       |  |                                 |                                |  |               |  |                   |                                     |  |   |                                        |          |  |   |           |     
|800 Central Expressway Mezzanine (7)      |  |                                 | 1-month LIBOR +8.50%           |  |               |  | Jun. 9, 2013      |                                     |  |   | 10,500                                 |          |  |   | 10,500    |     
|                                          |  |                                 |                                |  |               |  |                   |                                     |  |   |                                        |          |  |   |           |     
|Total other secured loan                  |  |                                 |                                |  |               |  |                   |                                     |  |   | 10,500                                 |          |  |   | 10,500    |     
|                                          |  |                                 |                                |  |               |  |                   |                                     |  |   |                                        |          |  |   |           |     
|Total indebtedness                        |  |                                 |                                |  |               |  |                   |                                     |  | $ | 3,055,429                              |          |  | $ | 2,806,954 |     
|                                          |  |                                 |                                |  |               |  |                   |                                     |  |   |                                        |          |  |   |           |     



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)





|(1) | The interest rate under our revolving credit facility equals either (i) US LIBOR, EURIBOR and GBP LIBOR (ranging from 1- to 6-month maturities) plus a margin of
between 1.10% and 2.00% or (ii) the greater of (x) the base rate announced by the lender and (y) 1/2 of 1% per annum above the federal funds rate, plus a margin of between 0.100%1.000%. In each case, the margin is based on
our total leverage ratio. We incur a fee ranging from 0.125% to 0.20% for the unused portion of our unsecured revolving credit facility.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | A one-year extension is available, which we may exercise if certain conditions are met.
|--- | ---------------------------------------------------------------------------------------

|(3) | Balances as of March 31, 2011 and December 31, 2010 are as follows (balances, in thousands):
|--- | --------------------------------------------------------------------------------------------



|                     |  |                             |         |     |                               |  |      |                                |  |   |                               |     |  |  |      |  
|-------------------- |  | --------------------------- | ------- | --- | ----------------------------- |  | ---- | ------------------------------ |  | - | ----------------------------- | --- |  |  | ---- | -
|Denomination of Draw |  | Balance as ofMarch 31, 2011 |         |     | Weighted-averageinterest rate |  |      | Balance as ofDecember 31, 2010 |  |   | Weighted-average interestrate |    
|US ($)               |  | $                           | 165,000 |     |                               |  | 1.35 | %                              |  | $ | 312,500                       |     |  |  | 1.40 | %
|Euro ()             |  |                             | 7,080   | (a) |                               |  | 2.01 | %                              |  |   |                              |     |  |  |     |  
|British Sterling (£) |  |                             | 37,607  | (b) |                               |  | 1.72 | %                              |  |   | 21,034                        | (b) |  |  | 1.69 | %
|                     |  |                             |         |     |                               |  |      |                                |  |   |                               |     |  |  |      |  
|Total                |  | $                           | 209,687 |     |                               |  | 1.44 | %                              |  | $ | 333,534                       |     |  |  | 1.42 | %
|                     |  |                             |         |     |                               |  |      |                                |  |   |                               |     |  |  |      |  

| | (a) | Based on exchange rate of $1.42 to 1.00 as of March 31, 2011.
| | --- | --------------------------------------------------------------

| | (b) | Based on exchange rate of $1.60 to £1.00 as of March 31, 2011 and $1.56 to £1.00 as of December 31, 2010.
| | --- | ---------------------------------------------------------------------------------------------------------



|(4) | The holders of the debentures have the right to require the Operating Partnership to repurchase the debentures in cash in whole or in part for a price of 100% of the
principal amount plus accrued and unpaid interest on each of August 15, 2011, August 15, 2016 and August 15, 2021. We have the right to redeem the debentures in cash for a price of 100% of the principal amount plus accrued and
unpaid interest commencing on August 18, 2011.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(5) | The holders of the debentures have the right to require the Operating Partnership to repurchase the debentures in cash in whole or in part for a price of 100% of the
principal amount plus accrued and unpaid interest on each of April 15, 2014, April 15, 2019 and April 15, 2024. We have the right to redeem the debentures in cash for a price of 100% of the principal amount plus accrued and
unpaid interest commencing on April 18, 2014.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(6) | This amount represents six mortgage loans secured by our interests in 36 NE 2nd Street, 3300 East Birch Street, 100 & 200 Quannapowitt Parkway, 300 Boulevard
East, 4849 Alpha Road, and 11830 Webb Chapel Road. Each of these loans is cross-collateralized by the six properties.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(7) | The respective borrowers assets and credit are not available to satisfy the debts and other obligations of affiliates or any other person.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------

|(8) | The Operating Partnership or its subsidiary provides a limited recourse guarantee with respect to this loan.
|--- | ------------------------------------------------------------------------------------------------------------

|(9) | Two one-year extensions are available, which we may exercise if certain conditions are met.
|--- | -------------------------------------------------------------------------------------------

|(10) | We have entered into interest rate swap or interest rate cap agreements as a cash flow hedge for interest generated by these US LIBOR, EURIBOR and GBP LIBOR based
loans. See note 13 for further information.
|---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(11) | Based on exchange rate of $1.60 to £1.00 as of March 31, 2011 and $1.56 to £1.00 as of December 31, 2010.
|---- | ---------------------------------------------------------------------------------------------------------

|(12) | Based on exchange rate of $1.42 to 1.00 as of March 31, 2011 and $1.34 to 1.00 as of December 31, 2010.
|---- | ---------------------------------------------------------------------------------------------------------

|(13) | This loan is also secured by a 1.3 million letter of credit.
|---- | -------------------------------------------------------------

|(14) | These loans are also secured by a £7.8 million letter of credit. These loans are cross-collateralized by the two properties.
|---- | ----------------------------------------------------------------------------------------------------------------------------

|(15) | If the loan is not repaid by March 1, 2012, the interest rate increases to the greater of 9.62% or the treasury rate then in effect plus 2%. Subject to a
prepayment lock-out period through December 2011.
|---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(16) | This mortgage loan was repaid in full in April 2011.
|---- | ----------------------------------------------------

Revolving Credit Facility

As of March 31, 2011, our revolving credit facility
had a total capacity of $750.0 million. Effective August 31, 2010, we exercised the first of two one-year extension options to our revolving credit facility, which extended its maturity date from August 31, 2010 to August 31, 2011.
The bank group is obligated to grant extension options provided we give proper notice, we make certain representations and warranties and no default exists under the revolving credit facility. On June 28, 2010, we completed an amendment to our
revolving credit facility. The amendment to the revolving credit facility provides us with the ability to add eligible unencumbered international assets to the borrowing base in support of our outstanding unsecured debt. International assets include
properties located in Canada, England, Ireland, Wales, France, Spain, the Netherlands, Singapore and Australia. Under the new amendment, international assets may comprise up to 25% of the borrowing base, with assets in Spain and Singapore limited to
up to 10% of the borrowing base. As of March 31, 2011, borrowings under the revolving credit facility bore interest at a blended rate of 1.35% (U.S), 2.01% (Euro) and 1.72% (GBP), which are based on 1-month LIBOR, 1-month EURIBOR and 1-month
GBP LIBOR, respectively, plus a margin of 1.10%. The revolving credit facility has a $515.0 million sub-facility for multicurrency advances in British Pounds Sterling, Canadian Dollars, Euros, and Swiss Francs. We intend to use available
borrowings under the revolving credit facility to, among other things, finance the acquisition of additional properties, fund tenant improvements and capital expenditures, fund development and redevelopment activities and to provide for working
capital and other corporate purposes, including potentially for the repurchase, redemption or retirement of outstanding debt securities. As of March 31, 2011, approximately $209.7 million was drawn under this facility and $29.9 million of
letters of credit were issued.

The credit facility contains various restrictive covenants, including limitations on our ability to incur
additional indebtedness, make certain investments or merge with another company, and requirements to maintain financial coverage ratios as well as a pool of unencumbered assets. In addition, a downgrade in Digital Realty Trust, Inc.s credit
rating below investment grade may trigger additional payments or other consequences under our credit facility. In addition, except to enable Digital Realty Trust, Inc. to maintain its status as a REIT for federal income tax purposes or as may
otherwise be required to avoid the imposition of income or excise taxes on Digital Reality Trust, Inc., we are not permitted during any four consecutive fiscal quarters to make distributions with respect to common stock or other equity interests in
an aggregate amount in excess of 95% of Funds From Operations, as defined in the credit agreement, for such period, subject to certain other adjustments. As of March 31, 2011, we were in compliance with all of such covenants.



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



During the three months ended March 31, 2011 and 2010, we capitalized interest of approximately
$4.7 million and $1.9 million, respectively.

Unsecured Senior Notes

Prudential Shelf Facility

On January 20, 2010, the Operating Partnership closed the sale of $100.0 million aggregate principal amount of its senior unsecured term notes to
Prudential Investment Management, Inc. and certain of its affiliates, or, collectively, Prudential, pursuant to the Prudential shelf facility. The notes were issued in two series referred to as the series D and series E notes. The series D notes
have a principal amount of $50.0 million, an interest-only rate of 4.57% per annum and a five-year maturity, and the series E notes have a principal amount of $50.0 million, an interest-only rate of 5.73% per annum and a seven-year
maturity. On February 3, 2010, the Operating Partnership closed the sale of an additional $17.0 million aggregate principal amount of its senior unsecured term notes, which we refer to as the series F notes, to Prudential pursuant to the
Prudential shelf facility. The series F notes have an interest-only rate of 4.50% per annum and a five-year maturity. We used the proceeds of the series D, series E and series F notes to fund acquisitions, to temporarily repay borrowings under
our revolving credit facility, to fund working capital and for general corporate purposes. As of March 31, 2011 and December 31, 2010, there was $200.0 million of unsecured senior notes outstanding. On December 8, 2010, our operating
partnership and Prudential entered into an amendment to the Note Purchase and Private Shelf Agreement, increasing the capacity of the Prudential shelf facility from $200.0 million to $250.0 million.

4.500% Notes due 2015

On July 8, 2010, the Operating Partnership issued $375.0 million aggregate principal amount of notes, maturing on July 15, 2015 with an interest
rate of 4.500% per annum (the 2015 Notes). The purchase price paid by the initial purchasers was 99.697% of the principal amount. The 2015 Notes are general unsecured senior obligations of the Operating Partnership, rank equally in right of
payment with all other senior unsecured indebtedness of the Operating Partnership and are fully and unconditionally guaranteed by Digital Realty Trust, Inc. Interest on the 2015 Notes is payable on January 15 and July 15 of each year,
beginning on January 15, 2011. The net proceeds from the offering after deducting the original issue discount of approximately $1.1 million and underwriting commissions and expenses of approximately $3.1 million was approximately $370.8
million. We used the net proceeds from the offering to fund a portion of the purchase price of the 365 Main Portfolio. The 2015 Notes have been reflected net of discount in the condensed consolidated balance sheet.

The indenture governing the 2015 Notes contains certain covenants, including (1) a leverage ratio not to exceed 60%, (2) a secured debt
leverage ratio not to exceed 40% and (3) an interest coverage ratio of greater than 1.50, and also requires us to maintain total unencumbered assets of not less than 150% of the aggregate principal amount of unsecured debt. At March 31,
2011, we were in compliance with each of these financial covenants.

We entered into a registration rights agreement whereby the Operating
Partnership agreed to conduct an offer to exchange the 2015 Notes for a new series of publicly registered notes with substantially identical terms. If the Operating Partnership did not fulfill certain of its obligations under the registration
rights agreement, it would have been required to pay liquidated damages to the holders of the 2015 Notes. No separate contingent obligation was recorded as no liquidated damages became probable. We filed a registration statement with the U.S.
Securities and Exchange Commission in October 2010 in connection with the exchange offer, which was declared effective in December 2010. We completed the exchange offer on January 19, 2011.

5.875% Notes due 2020

On January 28, 2010, the Operating Partnership issued $500.0 million aggregate principal amount of notes, maturing on February 1, 2020 with an
interest rate of 5.875% per annum (the 2020 Notes). The purchase price paid by the initial purchasers was 98.296% of the principal amount. The 2020 Notes are general unsecured senior obligations of the Operating Partnership, rank equally in
right of payment with all other senior unsecured indebtedness of the Operating Partnership and are fully and unconditionally guaranteed by Digital Realty Trust, Inc. Interest on the 2020 Notes is payable on February 1 and August 1 of each
year, beginning on August 1, 2010. The net proceeds from the offering after deducting the original issue discount of approximately $8.5 million and underwriting commissions and expenses of approximately $4.4 million was approximately $487.1
million. We used the net proceeds from the offering to temporarily repay our borrowings under our revolving credit facility, fund development and redevelopment opportunities and for general corporate purposes. The 2020 Notes have been reflected net
of discount in the condensed consolidated balance sheet.



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



The indenture governing the 2020 Notes contains certain covenants, including (1) a leverage ratio
not to exceed 60%, (2) a secured debt leverage ratio not to exceed 40% and (3) an interest coverage ratio of greater than 1.50, and also requires us to maintain total unencumbered assets of not less than 150% of the aggregate principal
amount of unsecured debt. At March 31, 2011, we were in compliance with each of these financial covenants.

We entered into a
registration rights agreement whereby the Operating Partnership agreed to conduct an offer to exchange the 2020 Notes for a new series of publicly registered notes with substantially identical terms. If the Operating Partnership did not fulfill
certain of its obligations under the registration rights agreement, it would have been required to pay liquidated damages to the holders of the 2020 Notes. No separate contingent obligation was recorded as no liquidated damages became probable.
We filed a registration statement with the U.S. Securities and Exchange Commission in June 2010 in connection with the exchange offer, which was declared effective in September 2010. We completed the exchange offer on November 5, 2010.

5.250% Notes due 2021

On March 8, 2011, the Operating Partnership issued $400.0 million aggregate principal amount of notes, maturing on March 15, 2021 with an interest rate of 5.250% per annum (the 2021 Notes).
The purchase price paid by the initial purchasers was 99.775% of the principal amount. The 2021 Notes are general unsecured senior obligations of the Operating Partnership, rank equally in right of payment with all other senior unsecured
indebtedness of the Operating Partnership and are fully and unconditionally guaranteed by Digital Realty Trust, Inc. Interest on the 2021 Notes is payable on March 15 and September 15 of each year, beginning on September 15, 2011. The
net proceeds from the offering after deducting the original issue discount of approximately $0.9 million and underwriting commissions and expenses of approximately $3.6 million was approximately $395.5 million. We used the net proceeds from this
offering to temporarily repay borrowings under our revolving credit facility, to acquire additional properties, to fund development and redevelopment opportunities and for general working capital purposes, including potentially for the repurchase,
redemption or retirement of outstanding debt securities. The 2021 Notes have been reflected net of discount in the condensed consolidated balance sheet.

The indenture governing the 2021 Notes contains certain covenants, including (1) a leverage ratio not to exceed 60%, (2) a secured debt leverage ratio not to exceed 40% and (3) an interest
coverage ratio of greater than 1.50, and also requires us to maintain total unencumbered assets of not less than 150% of the aggregate principal amount of unsecured debt. At March 31, 2011, we were in compliance with each of these financial
covenants.



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



Exchangeable Senior Debentures

4.125% Exchangeable Senior Debentures due 2026

On August 15, 2006, the Operating Partnership issued $172.5 million of its 4.125% exchangeable senior debentures due August 15, 2026 (the 2026 Debentures). Costs incurred to issue the 2026
Debentures were approximately $5.4 million, net of the amount allocated to the equity component of the debentures. These costs are being amortized over a period of five years, which represents the estimated term of the 2026 Debentures, and are
included in deferred financing costs, net in the condensed consolidated balance sheet. The 2026 Debentures are general unsecured senior obligations of the Operating Partnership, rank equally in right of payment with all other senior unsecured
indebtedness of the Operating Partnership and are fully and unconditionally guaranteed by Digital Realty Trust, Inc.

Interest is payable on
August 15 and February 15 of each year beginning February 15, 2007 until the maturity date of August 15, 2026. The 2026 Debentures bear interest at 4.125% per annum and contain an exchange settlement feature, which provides
that the 2026 Debentures may, under certain circumstances, be exchangeable for cash (up to the principal amount of the 2026 Debentures) and, with respect to any excess exchange value, into cash, shares of Digital Realty Trust, Inc. common stock or a
combination of cash and shares of Digital Realty Trust, Inc. common stock at an exchange rate that was initially 30.6828 shares per $1,000 principal amount of 2026 Debentures. The exchange rate on the 2026 Debentures is subject to adjustment for
certain events, including, but not limited to, certain dividends on Digital Realty Trust, Inc. common stock in excess of $0.265 per share per quarter (the reference dividend). Effective December 13, 2010, the exchange rate has been
adjusted to 31.8250 shares per $1,000 principal amount of 2026 Debentures as a result of the aggregate dividends in excess of the reference dividend that Digital Realty Trust, Inc. declared and paid on its common stock beginning with the quarter
ended December 31, 2006 and through the quarter ended December 31, 2010.

Prior to August 18, 2011, the Operating Partnership
may not redeem the 2026 Debentures except to preserve Digital Realty Trust, Inc.s status as a REIT for U.S. federal income tax purposes. On or after August 18, 2011, at the Operating Partnerships option, the 2026 Debentures are
redeemable in cash in whole or in part at 100% of the principal amount plus unpaid interest, if any, accrued to, but excluding, the redemption date, upon at least 30 days but not more than 60 days prior written notice to holders of the
2026 Debentures.

The holders of the 2026 Debentures have the right to require the Operating Partnership to repurchase the 2026 Debentures in
cash in whole or in part on each of August 15, 2011, August 15, 2016 and August 15, 2021, and in the event of a designated event, for a repurchase price equal to 100% of the principal amount of the 2026 Debentures plus unpaid
interest, if any, accrued to, but excluding, the repurchase date. Designated events include certain merger or combination transactions, non-affiliates becoming the beneficial owner of more than 50% of the total voting power of Digital Realty Trust,
Inc.s capital stock, a substantial turnover of Digital Realty Trust, Inc.s directors within a 12- month period and Digital Realty Trust, Inc. ceasing to be the general partner of the Operating Partnership. Certain events are considered
Events of Default, which may result in the accelerated maturity of the 2026 Debentures, including a default for 30 days in payment of any installment of interest under the 2026 Debentures, a default in the payment of the principal amount
or any repurchase price or redemption price due with respect to the 2026 Debentures and the Operating Partnerships failure to deliver cash or any shares of Digital Realty Trust, Inc. common stock within 15 days after the due date upon an
exchange of the 2026 Debentures, together with any cash due in lieu of fractional shares of common stock.

In addition, the 2026 Debentures
are exchangeable (i) prior to July 15, 2026, during any fiscal quarter after the fiscal quarter ended September 30, 2006, if the closing sale price of Digital Realty Trust, Inc. common stock for 20 or more trading days in a period of
30 consecutive trading days ending on the last trading day of the immediately preceding fiscal quarter exceeds 130% of the exchange price in effect on the last trading day of the immediately preceding fiscal quarter, (ii) prior to July 15,
2026, during the five business day period after any five consecutive trading day period in which the average trading price per $1,000 principal amount of 2026 Debentures was equal to or less than 98% of the product of the closing sale price of the
common stock during such period, multiplied by the applicable exchange rate, (iii) if we call the 2026 Debentures for redemption and (iv) any time on or after July 15, 2026. In January 2011, we gave notice to the holders of the 2026
Debentures that the 2026 Debentures shall be exchangeable during the calendar quarter ending March 31, 2011 pursuant to (i) above. The exchange price in effect as of March 31, 2011 was $31.42 per share.

We entered into a registration rights agreement whereby we agreed to register the shares of common stock which could be issued in the future upon
exchange of the 2026 Debentures. If we do not fulfill certain of our obligations under the registration rights agreement, we will be required to pay liquidated damages to the holders of the 2026 Debentures. No separate contingent obligation has been
recorded as no liquidated damages have become probable. We filed the shelf registration statement with the U.S. Securities and Exchange Commission in April 2007, which was automatically effective upon filing.



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



During the three months ended March 31, 2011, we exchanged approximately $35.9 million
aggregate principal amount of our 2026 Debentures for a combination of cash (approximately $47.6 million) and 303,073 restricted shares of Digital Realty Trust, Inc. common stock at the request of holders pursuant to the terms of the indenture
governing our 2026 Debentures. There were no exchanges of our 2026 Debentures during the three months ended March 31, 2010. As of March 31, 2011, the remaining $52.9 million face amount of the 2026 Debentures remains outstanding under the
original terms. We recorded a loss on exchange of approximately $0.6 million for the three months ended March 31, 2011, determined based on the excess of the fair value of the 2026 Debentures at the exchange date over the carrying value of the
exchanged 2026 Debentures along with a write off of a pro rata portion of the associated debt discount on the 2026 Debentures and deferred financing costs. This loss is reported as a loss on early extinguishment of debt in the condensed consolidated
income statements.

The following table provides additional information about the 2026 Debentures as of the date presented pursuant to
requirements under U.S. GAAP for convertible debt instruments that require the principal amount to be settled in cash upon conversion:



|                                                                            |  |                                                |          |   |                   |   |          |    
|--------------------------------------------------------------------------- |  | ---------------------------------------------- | -------- | - | ----------------- | - | -------- | ---
|                                                                            |  | 4.125% Exchangeable Senior Debentures due 2026 |         
|($ and shares in thousands, except exchange price)                          |  | March 31, 2011                                 |          |   | December 31, 2010 |  
|Carrying amount of the equity component                                     |  | $                                              | 5,607    |   |                   | $ | 9,406    |    
|Principal amount of the liability component                                 |  | $                                              | 52,908   |   |                   | $ | 88,758   |    
|Unamortized discount of the liability component                             |  | $                                              | 639      |   |                   | $ | 1,456    |    
|Net carrying amount of the liability component                              |  | $                                              | 52,269   |   |                   | $ | 87,302   |    
|Remaining amortization period of discount                                   |  |                                                | 4 months |   |                   |   | 7 months |    
|Exchange price                                                              |  | $                                              | 31.42    |   |                   | $ | 31.42    |    
|Number of shares to be issued upon exchange (a)                             |  |                                                | 774      |   |                   |   | 1,103    |    
|The amount by which the if-exchanged value exceeds the principal amount (a) |  | $                                              | 44,988   |   |                   | $ | 56,828   |    
|Effective interest rate on liability component                              |  |                                                | 6.75     | % |                   |   | 6.75     | %  
|Non-cash interest cost recognized for the period ended                      |  | $                                              | 604      |   |                   | $ | 1,025    | (b)
|Coupon rate interest cost recognized for the period ended                   |  | $                                              | 858      |   |                   | $ | 1,779    | (b)



|(a) | In accordance with accounting guidance on convertible debt instruments that require the principal amount to be settled in cash upon conversion, we are required to
disclose the exchange price and the number of shares on which the aggregate consideration to be delivered upon exchange is determined (principal plus excess value). The 2026 Debentures require the entire principal amount to be settled in cash, and
at our option, any excess value above the principal amount may be settled in cash and/or common shares. Based on the March 31, 2011 and December 31, 2010 closing share prices of Digital Realty Trust, Inc. common stock and the exchange
prices in the table above, the excess value was approximately $45.0 million and $56.8 million, respectively; accordingly, approximately 0.8 million and 1.1 million common shares, respectively, would be issued if the 2026 Debentures were
settled on these dates and we elected to settle the excess value in shares of Digital Realty Trust, Inc. common stock.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(b) | Amounts are for the three months ended March 31, 2010.
|--- | ------------------------------------------------------



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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



5.50% Exchangeable Senior Debentures due 2029

On April 20, 2009, the Operating Partnership issued $266.4 million of its 5.50% exchangeable senior debentures due April 15, 2029 (the 2029
Debentures). Costs incurred to issue the 2029 Debentures were approximately $7.8 million. These costs are being amortized over a period of five years, which represents the estimated term of the 2029 Debentures, and are included in deferred financing
costs, net in the condensed consolidated balance sheet. The 2029 Debentures are general unsecured senior obligations of the Operating Partnership, rank equally in right of payment with all other senior unsecured indebtedness of the Operating
Partnership and are fully and unconditionally guaranteed by Digital Realty Trust, Inc.

Interest is payable on October 15 and
April 15 of each year beginning October 15, 2009 until the maturity date of April 15, 2029. The 2029 Debentures bear interest at 5.50% per annum and may be exchanged for shares of Digital Realty Trust, Inc. common stock at an
exchange rate that was initially 23.2558 shares per $1,000 principal amount of 2029 Debentures. The exchange rate on the 2029 Debentures is subject to adjustment for certain events, including, but not limited to, certain dividends on Digital Realty
Trust, Inc. common stock in excess of $0.33 per share per quarter (the reference dividend). Effective September 13, 2010, the exchange rate has been adjusted to 23.5360 shares per $1,000 principal amount of 2029 Debentures as a
result of the aggregate dividends in excess of the reference dividend that Digital Realty Trust, Inc. declared and paid on its common stock beginning with the quarter ended June 30, 2009 and through the quarter ended September 30, 2010.
Due to the fact that the exchange feature for the 2029 Debentures must be settled in the common stock of Digital Realty Trust, Inc., new accounting guidance on convertible debt instruments that requires the principal amount to be settled in cash
upon conversion does not apply.

Prior to April 18, 2014, the Operating Partnership may not redeem the 2029 Debentures except to preserve
Digital Realty Trust, Inc.s status as a REIT for U.S. federal income tax purposes. On or after April 18, 2014, at the Operating Partnerships option, the 2029 Debentures are redeemable in cash in whole or in part at 100% of the
principal amount plus unpaid interest, if any, accrued to, but excluding, the redemption date, upon at least 30 days but not more than 60 days prior written notice to holders of the 2029 Debentures.

The holders of the 2029 Debentures have the right to require the Operating Partnership to repurchase the 2029 Debentures in cash in whole or in part on
each of April 15, 2014, April 15, 2019 and April 15, 2024, and in the event of a designated event, for a repurchase price equal to 100% of the principal amount of the 2029 Debentures plus unpaid interest, if any, accrued to, but
excluding, the repurchase date. Designated events include certain merger or combination transactions, non-affiliates becoming the beneficial owner of more than 50% of the total voting power of Digital Realty Trust, Inc.s capital stock, a
substantial turnover of Digital Realty Trust, Inc.s directors within a 12-month period without the approval of existing members and Digital Realty Trust, Inc. ceasing to be the general partner of the Operating Partnership. Certain events are
considered Events of Default, which may result in the accelerated maturity of the 2029 Debentures, including a default for 30 days in payment of any installment of interest under the 2029 Debentures, a default in the payment of the
principal amount or any repurchase price or redemption price due with respect to the 2029 Debentures and the Operating Partnerships failure to deliver shares of Digital Realty Trust, Inc. common stock within 15 days after the due date upon an
exchange of the 2029 Debentures, together with any cash due in lieu of fractional shares of common stock.

We entered into a registration
rights agreement whereby we must register the shares of common stock which could be issued in the future upon exchange of the 2029 Debentures. If we do not fulfill certain of our obligations under the registration rights agreement, we will be
required to pay liquidated damages to the holders of the 2029 Debentures. No separate contingent obligation has been recorded as no liquidated damages have become probable. We filed the shelf registration statement with the U.S. Securities and
Exchange Commission in December 2009, which was automatically effective upon filing.



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



The table below summarizes our debt maturities and principal payments as of March 31, 2011 (in
thousands):



|                     |  |                              |         |  |                       |   |         |              |  |   |                               |   |  |                   |         |     |                   |   |           |            |  |   |        |  |  |   |           |  
|-------------------- |  | ---------------------------- | ------- |  | --------------------- | - | ------- | ------------ |  | - | ----------------------------- | - |  | ----------------- | ------- | --- | ----------------- | - | --------- | ---------- |  | - | ------ |  |  | - | --------- | -
|                     |  | Revolving CreditFacility
(1) |         |  | UnsecuredSenior Notes |   |         | Senior Notes |  |   | ExchangeableSenior Debentures |   |  | MortgageLoans
(2) |         |     | Other SecuredLoan |   |           | Total Debt | 
|Remainder of 2011    |  | $                            | 209,687 |  |                       | $ | 25,000  |              |  | $ |                              |   |  | $                 | 52,908  | (3) |                   | $ | 127,286   |            |  | $ |       |  |  | $ | 414,881   |  
|2012                 |  |                              |        |  |                       |   |        |              |  |   |                              |   |  |                   |        |     |                   |   | 162,780   |            |  |   |       |  |  |   | 162,780   |  
|2013                 |  |                              |        |  |                       |   | 33,000  |              |  |   |                              |   |  |                   |        |     |                   |   | 159,654   |            |  |   | 10,500 |  |  |   | 203,154   |  
|2014                 |  |                              |        |  |                       |   |        |              |  |   |                              |   |  |                   | 266,400 | (4) |                   |   | 219,907   |            |  |   |       |  |  |   | 486,307   |  
|2015                 |  |                              |        |  |                       |   | 67,000  |              |  |   | 375,000                       |   |  |                   |        |     |                   |   | 75,436    |            |  |   |       |  |  |   | 517,436   |  
|Thereafter           |  |                              |        |  |                       |   | 75,000  |              |  |   | 900,000                       |   |  |                   |        |     |                   |   | 305,098   |            |  |   |       |  |  |   | 1,280,098 |  
|                     |  |                              |         |  |                       |   |         |              |  |   |                               |   |  |                   |         |     |                   |   |           |            |  |   |        |  |  |   |           |  
|Subtotal             |  | $                            | 209,687 |  |                       | $ | 200,000 |              |  | $ | 1,275,000                     |   |  | $                 | 319,308 |     |                   | $ | 1,050,161 |            |  | $ | 10,500 |  |  | $ | 3,064,656 |  
|Unamortized discount |  |                              |        |  |                       |   |        |              |  |   | (9,649                        | ) |  |                   | (639    | )   |                   |   |          |            |  |   |       |  |  |   | (10,288   | )
|Unamortized premium  |  |                              |        |  |                       |   |        |              |  |   |                              |   |  |                   |        |     |                   |   | 1,061     |            |  |   |       |  |  |   | 1,061     |  
|                     |  |                              |         |  |                       |   |         |              |  |   |                               |   |  |                   |         |     |                   |   |           |            |  |   |        |  |  |   |           |  
|Total                |  | $                            | 209,687 |  |                       | $ | 200,000 |              |  | $ | 1,265,351                     |   |  | $                 | 318,669 |     |                   | $ | 1,051,222 |            |  | $ | 10,500 |  |  | $ | 3,055,429 |  
|                     |  |                              |         |  |                       |   |         |              |  |   |                               |   |  |                   |         |     |                   |   |           |            |  |   |        |  |  |   |           |  



|(1) | Subject to a one-year extension option exercisable by us. The bank group is obligated to grant the extension option provided we give proper notice, we
make certain representations and warranties and no default exists under the revolving credit facility.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Our mortgage loans are generally non-recourse to us, subject to carve outs for specified actions by us or specified undisclosed environmental
liabilities. As of March 31, 2011, we had provided limited recourse guarantees with respect to approximately $159.1 million principal amount of the outstanding mortgage indebtedness, and partial letter of credit support with respect to
approximately an additional $47.2 million of the outstanding mortgage indebtedness.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Assumes maturity of the 2026 Debentures at first redemption date in August 2011.
|--- | --------------------------------------------------------------------------------

|(4) | Assumes maturity of the 2029 Debentures at first redemption date in April 2014.
|--- | -------------------------------------------------------------------------------

7. Income per Share

The following is a summary of basic and diluted income per share (in thousands, except share and per share amounts):



|                                             |  |                              |            |  |      |   |            | 
|-------------------------------------------- |  | ---------------------------- | ---------- |  | ---- | - | ---------- | 
|                                             |  | Three Months Ended March 31, |           
|                                             |  | 2011                         |            |  | 2010 |  
|Net income available to common stockholders  |  | $                            | 30,980     |  |      | $ | 14,744     | 
|                                             |  |                              |            |  |      |   |            | 
|Weighted average shares outstandingbasic    |  |                              | 91,428,355 |  |      |   | 77,770,691 | 
|Potentially dilutive common shares:          |  |                              |            |  |      |   |            | 
|Stock options                                |  |                              | 202,038    |  |      |   | 195,652    | 
|Class C Units (2007 Grant)                   |  |                              | 92,795     |  |      |   | 581,052    | 
|Unvested incentive units                     |  |                              | 153,066    |  |      |   | 129,450    | 
|Excess exchange value of the 2026 Debentures |  |                              | 723,961    |  |      |   | 2,065,265  | 
|                                             |  |                              |            |  |      |   |            | 
|Weighted average shares outstandingdiluted  |  |                              | 92,600,215 |  |      |   | 80,742,110 | 
|                                             |  |                              |            |  |      |   |            | 
|Income per share:                            |  |                              |            |  |      |   |            | 
|Basic                                        |  | $                            | 0.34       |  |      | $ | 0.19       | 
|                                             |  |                              |            |  |      |   |            | 
|Diluted                                      |  | $                            | 0.33       |  |      | $ | 0.18       | 
|                                             |  |                              |            |  |      |   |            | 

On or after July 15, 2026, the 2026 Debentures may be exchanged at the then-applicable exchange rate for cash (up to
the principal amount of the 2026 Debentures) and, with respect to any excess exchange value, into cash, shares of Digital Realty Trust, Inc. common stock or a combination of cash and shares of Digital Realty Trust, Inc. common stock. The 2026
Debentures are also



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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



exchangeable prior to July 15, 2026, but only upon the occurrence of certain specified events. During the three months ended March 31, 2011, the weighted average common stock price
exceeded the strike price as of March 31, 2011 of $31.42. Therefore, using the treasury method, 723,961 shares of common stock contingently issuable upon settlement of the excess exchange value were included as potentially dilutive common
shares in determining diluted earnings per share for the three months ended March 31, 2011. During the three months ended March 31, 2010, the weighted average common stock price exceeded the strike price as of March 31, 2010 of
$31.84. Therefore, using the treasury method, 2,065,265 shares of common stock contingently issuable upon settlement of the excess exchange value were included as potentially dilutive common shares in determining diluted earnings per share for the
three months ended March 31, 2010.

We have excluded the following potentially dilutive securities in the calculations above as they
would be antidilutive or not dilutive:



|                                                                       |  |                              |            |  |      |  |            | 
|---------------------------------------------------------------------- |  | ---------------------------- | ---------- |  | ---- |  | ---------- | 
|                                                                       |  | Three Months Ended March 31, |           
|                                                                       |  | 2011                         |            |  | 2010 | 
|Weighted average of Operating Partnership common units not owned by us |  |                              | 4,874,253  |  |      |  | 5,462,409  | 
|Potentially dilutive outstanding stock options                         |  |                              |           |  |      |  | 6,284      | 
|Potentially dilutive 2029 Debentures                                   |  |                              | 6,269,990  |  |      |  | 6,195,345  | 
|Potentially dilutive Series C Cumulative Convertible Preferred Stock   |  |                              | 3,652,324  |  |      |  | 3,657,477  | 
|Potentially dilutive Series D Cumulative Convertible Preferred Stock   |  |                              | 8,333,421  |  |      |  | 8,215,221  | 
|                                                                       |  |                              |            |  |      |  |            | 
|                                                                       |  |                              | 23,129,988 |  |      |  | 23,536,736 | 
|                                                                       |  |                              |            |  |      |  |            | 

8. Income per Unit

The following is a summary of basic and diluted income per unit (in thousands, except unit and per unit amounts):



|                                             |  |                              |            |  |      |   |            | 
|-------------------------------------------- |  | ---------------------------- | ---------- |  | ---- | - | ---------- | 
|                                             |  | Three Months Ended March 31, |           
|                                             |  | 2011                         |            |  | 2010 |  
|Net income available to common unitholders   |  | $                            | 32,632     |  |      | $ | 15,717     | 
|                                             |  |                              |            |  |      |   |            | 
|Weighted average units outstandingbasic     |  |                              | 96,302,608 |  |      |   | 83,233,100 | 
|Potentially dilutive common units:           |  |                              |            |  |      |   |            | 
|Stock options                                |  |                              | 202,038    |  |      |   | 195,652    | 
|Class C Units (2007 Grant)                   |  |                              | 92,795     |  |      |   | 581,052    | 
|Unvested incentive units                     |  |                              | 153,066    |  |      |   | 129,450    | 
|Excess exchange value of the 2026 Debentures |  |                              | 723,961    |  |      |   | 2,065,265  | 
|                                             |  |                              |            |  |      |   |            | 
|Weighted average units outstandingdiluted   |  |                              | 97,474,468 |  |      |   | 86,204,519 | 
|                                             |  |                              |            |  |      |   |            | 
|Income per unit:                             |  |                              |            |  |      |   |            | 
|Basic                                        |  | $                            | 0.34       |  |      | $ | 0.19       | 
|                                             |  |                              |            |  |      |   |            | 
|Diluted                                      |  | $                            | 0.33       |  |      | $ | 0.18       | 
|                                             |  |                              |            |  |      |   |            | 

On or after July 15, 2026, the 2026 Debentures may be exchanged at the then-applicable exchange rate for cash (up to
the principal amount of the 2026 Debentures) and, with respect to any excess exchange value, into cash, shares of Digital Realty Trust, Inc. common stock or a combination of cash and shares of Digital Realty Trust, Inc. common stock. Pursuant to the
terms of the



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



Operating Partnerships agreement of limited partnership, the Operating Partnership will deliver to Digital Realty Trust, Inc. one common unit for each share of common stock issuable upon
exchange of the 2026 Debentures. The 2026 Debentures are also exchangeable prior to July 15, 2026, but only upon the occurrence of certain specified events. During the three months ended March 31, 2011, the weighted average common stock
price exceeded the strike price as of March 31, 2011 of $31.42. Therefore, using the treasury method, 723,961 common units contingently issuable upon settlement of the excess exchange value were included as potentially dilutive common units in
determining diluted earnings per unit for the three months ended March 31, 2011. During the three months ended March 31, 2010, the weighted average common stock price exceeded the strike price as of March 31, 2010 of $31.84.
Therefore, using the treasury method, 2,065,265 common units contingently issuable upon settlement of the excess exchange value were included as potentially dilutive common units in determining diluted earnings per unit for the three months ended
March 31, 2010.

We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive
or not dilutive:



|                                                                     |  |                              |            |  |      |  |            | 
|-------------------------------------------------------------------- |  | ---------------------------- | ---------- |  | ---- |  | ---------- | 
|                                                                     |  | Three Months Ended March 31, |           
|                                                                     |  | 2011                         |            |  | 2010 | 
|Potentially dilutive outstanding stock options                       |  |                              |           |  |      |  | 6,284      | 
|Potentially dilutive 2029 Debentures                                 |  |                              | 6,269,990  |  |      |  | 6,195,345  | 
|Potentially dilutive Series C Cumulative Convertible Preferred Units |  |                              | 3,652,324  |  |      |  | 3,657,477  | 
|Potentially dilutive Series D Cumulative Convertible Preferred Units |  |                              | 8,333,421  |  |      |  | 8,215,221  | 
|                                                                     |  |                              |            |  |      |  |            | 
|                                                                     |  |                              | 18,255,735 |  |      |  | 18,074,327 | 
|                                                                     |  |                              |            |  |      |  |            | 

9. Income Taxes

Digital Realty Trust, Inc. (the Parent Company) elected to be taxed as a REIT and believes that it has complied with the REIT requirements of the Code. As
a REIT, the Parent Company is generally not subject to corporate level federal income taxes on taxable income to the extent it is currently distributed to its stockholders. Since inception, the Parent Company has distributed 100% of its taxable
income and intends to do so for the tax year ending December 31, 2011. As such, no provision for federal income taxes has been included in the accompanying condensed consolidated financial statements for the three months ended March 31,
2011 and 2010.

We have elected taxable REIT subsidiary (TRS) status for some of our consolidated subsidiaries. In general, a TRS may provide
services that would otherwise be considered impermissible for REITs and hold assets that REITs cannot hold directly. A TRS is subject to federal income tax as a regular C corporation. Income taxes for TRS entities are accrued, as necessary, for
the three months ended March 31, 2011 and 2010.

For our TRS entities and foreign subsidiaries that are subject to U.S. federal, state
and foreign income taxes, deferred tax assets and liabilities are established for temporary differences between the financial reporting basis and the tax basis of assets and liabilities at the enacted tax rates expected to be in effect when the
temporary differences reverse. A valuation allowance for deferred tax assets is provided if we believe it is more likely than not that the deferred tax asset may not be realized, based on available evidence at the time the determination is made. An
increase or decrease in the valuation allowance that results from the change in circumstances that causes a change in our judgment about the realizability of the related deferred tax asset is included in income. Deferred tax assets (net of valuation
allowance) and liabilities for our TRS entities and foreign subsidiaries are accrued, as necessary, for the three months ended March 31, 2011 and 2010.

10. Equity and Accumulated Other Comprehensive Loss, Net

(a) Equity Distribution Agreements

On December 31, 2009, Digital Realty Trust, Inc. entered into equity distribution agreements, which we refer to as the Original Equity Distribution Agreements, with each of Citigroup Global Markets
Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated and Credit Suisse Securities (USA) LLC, or the Original Agents, under which it could issue and sell shares of its common stock having an



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



aggregate offering price of up to $400,000,000 from time to time through, at its discretion, any of the Original Agents as its sales agents. On January 22, 2010, Digital Realty Trust, Inc.
amended and restated each Original Equity Distribution Agreement with the applicable Original Agent, and also entered into a new equity distribution agreement with Morgan Stanley & Co. Incorporated, or collectively the Equity Distribution
Agreements, under which it may issue and sell shares of its common stock having an aggregate offering price of up to $400,000,000 (including the approximately 1.1 million shares of common stock having an aggregate offering price of
approximately $54.3 million sold pursuant to the Original Equity Distribution Agreements as of January 22, 2010), from time to time through, at its discretion, any of the Original Agents or Morgan Stanley & Co. Incorporated as its
sales agents. On March 2, 2011, the Equity Distribution Agreements were amended to amend certain representations. The sales of common stock made under the Equity Distribution Agreements will be made in at the market offerings as
defined in Rule 415 of the Securities Act. For the three months ended March 31, 2011, Digital Realty Trust, Inc. generated net proceeds of approximately $5.6 million from the issuance of approximately 0.1 million common shares under the
Equity Distribution Agreements at an average price of $58.44 per share after payment of approximately $0.1 million of commissions to the sales agents.

(b) Noncontrolling Interests in Operating Partnership

Noncontrolling interests in
the Operating Partnership relate to the interests that are not owned by Digital Realty Trust, Inc. The following table shows the ownership interest in the Operating Partnership as of March 31, 2011 and December 31, 2010:



|                                                              |  |                 |            |  |                     |  |       |                 |  |  |                     |  |  |  |       |  
|------------------------------------------------------------- |  | --------------- | ---------- |  | ------------------- |  | ----- | --------------- |  |  | ------------------- |  |  |  | ----- | -
|                                                              |  | March 31, 2011  |            |  | December 31, 2010   | 
|                                                              |  | Number of units |            |  | Percentage of total |  |       | Number of units |  |  | Percentage of total | 
|Digital Realty Trust, Inc.                                    |  |                 | 92,078,429 |  |                     |  | 94.4  | %               |  |  | 91,159,221          |  |  |  | 94.3  | %
|Noncontrolling interests consist of:                          |  |                 |            |  |                     |  |       |                 |  |  |                     |  |  |  |       |  
|Common units held by third parties                            |  |                 | 3,810,814  |  |                     |  | 3.9   |                 |  |  | 3,937,827           |  |  |  | 4.1   |  
|Incentive units held by employees and directors (see note 12) |  |                 | 1,665,994  |  |                     |  | 1.7   |                 |  |  | 1,525,592           |  |  |  | 1.6   |  
|                                                              |  |                 |            |  |                     |  |       |                 |  |  |                     |  |  |  |       |  
|                                                              |  |                 | 97,555,237 |  |                     |  | 100.0 | %               |  |  | 96,622,640          |  |  |  | 100.0 | %
|                                                              |  |                 |            |  |                     |  |       |                 |  |  |                     |  |  |  |       |  

Limited partners have the right to require the Operating Partnership to redeem part or all of their common units for cash
based on the fair market value of an equivalent number of shares of Digital Realty Trust, Inc. common stock at the time of redemption. Alternatively, Digital Realty Trust, Inc. may elect to acquire those common units in exchange for shares of
Digital Realty Trust, Inc. common stock on a one-for-one basis, subject to adjustment in the event of stock splits, stock dividends, issuance of stock rights, specified extraordinary distributions and similar events. Pursuant to authoritative
accounting guidance, Digital Realty Trust, Inc. evaluated whether it controls the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the share settlement of the noncontrolling Operating
Partnership common and incentive units. Based on the results of this analysis, we concluded that the common and incentive Operating Partnership units met the criteria to be classified within equity.

The redemption value of the noncontrolling Operating Partnership common units and the vested incentive units was approximately $276.7 million and $244.5
million based on the closing market price of Digital Realty Trust, Inc. common stock on March 31, 2011 and December 31, 2010, respectively.



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



The following table shows activity for the noncontrolling interests in the Operating Partnership for the
three months ended March 31, 2011:



|                                                                                                                       |  |              |           |   |                 |  |           |       |  |  |           |  
|---------------------------------------------------------------------------------------------------------------------- |  | ------------ | --------- | - | --------------- |  | --------- | ----- |  |  | --------- | -
|                                                                                                                       |  | Common Units |           |   | Incentive Units |  |           | Total | 
|As of December 31, 2010                                                                                                |  |              | 3,937,827 |   |                 |  | 1,525,622 |       |  |  | 5,463,449 |  
|                                                                                                                       |  |              |          
|Redemption of common units for shares of Digital Realty Trust, Inc. common stock(1)                                    |  |              | (127,013  | ) |                 |  |          |       |  |  | (127,013  | )
|Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock(1) |  |              |          |   |                 |  | (37,163   | )     |  |  | (37,163   | )
|Grant of incentive units to employees and directors                                                                    |  |              |          |   |                 |  | 177,535   |       |  |  | 177,535   |  
|                                                                                                                       |  |              |           |   |                 |  |           |       |  |  |           |  
|As of March 31, 2011                                                                                                   |  |              | 3,810,814 |   |                 |  | 1,665,994 |       |  |  | 5,476,808 |  
|                                                                                                                       |  |              |           |   |                 |  |           |       |  |  |           |  



|(1) | This redemption was recorded as a reduction to noncontrolling interests in the Operating Partnership and an increase to common stock and additional paid in capital
based on the book value per unit in the accompanying condensed consolidated balance sheet of Digital Realty Trust, Inc.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Under
the terms of certain third parties (the eXchange parties) contribution agreements signed in the third quarter of 2004, we have agreed to indemnify each eXchange party against adverse tax consequences in the event the Operating Partnership
directly or indirectly sells, exchanges or otherwise disposes of (whether by way of merger, sale of assets or otherwise) in a taxable transaction any interest in 200 Paul Avenue 1-4 or 1100 Space Park Drive until the earlier of November 3, 2013
and the date on which these contributors or certain transferees hold less than 25% of the Operating Partnership common units issued to them in the formation transactions consummated concurrently with the IPO. Under the eXchange parties amended
contribution agreement, the Operating Partnership has agreed to make approximately $17.8 million of indebtedness available for guaranty by the eXchange parties until the earlier of November 3, 2013 and the date on which these contributors or
certain transferees hold less than 25% of the Operating Partnership common units issued to them in the formation transactions consummated concurrently with the IPO, and we have agreed to indemnify each eXchange party against adverse tax consequences
if the Operating Partnership does not provide such indebtedness to guarantee.

(c) Dividends

We have declared the following dividends on our common and preferred stock for the three months ended March 31, 2011 (in thousands):



|                       |  |                      |                |  |                            |   |       |                            |  |   |                   |  |  |   |        | 
|---------------------- |  | -------------------- | -------------- |  | -------------------------- | - | ----- | -------------------------- |  | - | ----------------- |  |  | - | ------ | 
|Date dividend declared |  | Dividend payabledate |                |  | Series CPreferredStock
(1) |   |       | Series DPreferredStock
(2) |  |   | Common Stock 
(3) | 
|February 10, 2011      |  |                      | March 31, 2011 |  |                            | $ | 1,832 |                            |  | $ | 4,690             |  |  | $ | 62,459 | 
|                       |  |                      |                |  |                            |   |       |                            |  |   |                   |  |  |   |        | 
|                       |  |                      |                |  |                            | $ | 1,832 |                            |  | $ | 4,690             |  |  | $ | 62,459 | 
|                       |  |                      |                |  |                            |   |       |                            |  |   |                   |  |  |   |        | 



|(1) | $1.094 annual rate of dividend per share.
|--- | -----------------------------------------

|(2) | $1.375 annual rate of dividend per share.
|--- | -----------------------------------------

|(3) | $2.720 annual rate of dividend per share.
|--- | -----------------------------------------

Distributions out of Digital Realty Trust, Inc.s current or accumulated earnings and profits are generally classified as dividends whereas
distributions in excess of its current and accumulated earnings and profits, to the extent of a stockholders U.S. federal income tax basis in Digital Realty Trust, Inc.s stock, are generally classified as a return of capital.
Distributions in excess of a stockholders U.S. federal income tax basis in Digital Realty Trust, Inc.s stock are generally characterized as capital gain. Cash provided by operating activities has been sufficient to fund all
distributions.



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



(d) Accumulated Other Comprehensive Loss, Net

The accumulated balances for each classification of other comprehensive loss, net as of March 31, 2011 are as follows (in thousands):



|                                                              |  |                                        |         |   |                            |   |        |                                         |  |   |         |  
|------------------------------------------------------------- |  | -------------------------------------- | ------- | - | -------------------------- | - | ------ | --------------------------------------- |  | - | ------- | -
|                                                              |  | Foreign currencytranslationadjustments |         |   | Cash flow hedgeadjustments |   |        | Accumulated othercomprehensive loss,net | 
|Balance as of December 31, 2010                               |  | $                                      | (33,175 | ) |                            | $ | (8,906 | )                                       |  | $ | (42,081 | )
|Net current period change                                     |  |                                        | 15,576  |   |                            |   | 1,430  |                                         |  |   | 17,006  |  
|Reclassification to interest expense from interest rate swaps |  |                                        |        |   |                            |   | 1,505  |                                         |  |   | 1,505   |  
|                                                              |  |                                        |         |   |                            |   |        |                                         |  |   |         |  
|Balance as of March 31, 2011                                  |  | $                                      | (17,599 | ) |                            | $ | (5,971 | )                                       |  | $ | (23,570 | )
|                                                              |  |                                        |         |   |                            |   |        |                                         |  |   |         |  



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



11. Capital and Comprehensive Income

(a) Allocations of Net Income and Net Losses to Partners

Except for special
allocations to holders of profits interest units described below in note 12(a) under the heading Incentive Plans-Long-Term Incentive Units, the Operating Partnerships net income will generally be allocated to Digital Realty Trust,
Inc. (the General Partner) to the extent of the accrued preferred return on its preferred units, and then to the General Partner and the Operating Partnerships limited partners in accordance with the respective percentage interests in the
common units issued by the Operating Partnership. Net loss will generally be allocated to the General Partner and the Operating Partnerships limited partners in accordance with the respective common percentage interests in the Operating
Partnership until the limited partners capital is reduced to zero and any remaining net loss would be allocated to the General Partner. However, in some cases, losses may be disproportionately allocated to partners who have guaranteed our
debt. The allocations described above are subject to special allocations relating to depreciation deductions and to compliance with the provisions of Sections 704(b) and 704(c) of the Code, and the associated Treasury Regulations.

(b) Partnership Units

Limited partners have the right to require the Operating Partnership to redeem part or all of their common units for cash based on the fair market value of an equivalent number of shares of the General
Partners common stock at the time of redemption. Alternatively, the General Partner may elect to acquire those common units in exchange for shares of the General Partners common stock on a one-for-one basis, subject to adjustment in the
event of stock splits, stock dividends, issuance of stock rights, specified extraordinary distributions and similar events. Pursuant to authoritative accounting guidance, the Operating Partnership evaluated whether it controls the actions or events
necessary to issue the maximum number of shares that could be required to be delivered under the share settlement of the limited partners common units and the vested incentive units. Based on the results of this analysis, the Operating
Partnership concluded that the common and vested incentive Operating Partnership units met the criteria to be classified within capital.

The
redemption value of the limited partners common units and the vested incentive units was approximately $276.7 million and $244.5 million based on the closing market price of Digital Realty Trust, Inc.s common stock on March 31, 2011
and December 31, 2010, respectively.

(c) Distributions

All distributions on our units are at the discretion of Digital Realty Trust, Inc.s board of directors. As of March 31, 2011, the Operating
Partnership declared the following distributions (in thousands):



|                           |  |                          |                |  |                            |   |       |                            |  |   |                   |  |  |   |        | 
|-------------------------- |  | ------------------------ | -------------- |  | -------------------------- | - | ----- | -------------------------- |  | - | ----------------- |  |  | - | ------ | 
|Date distribution declared |  | Distributionpayable date |                |  | Series CPreferredUnits
(1) |   |       | Series DPreferredUnits
(2) |  |   | Common Units 
(3) | 
|February 10, 2011          |  |                          | March 31, 2011 |  |                            | $ | 1,832 |                            |  | $ | 4,690             |  |  | $ | 66,252 | 
|                           |  |                          |                |  |                            |   |       |                            |  |   |                   |  |  |   |        | 
|                           |  |                          |                |  |                            | $ | 1,832 |                            |  | $ | 4,690             |  |  | $ | 66,252 | 
|                           |  |                          |                |  |                            |   |       |                            |  |   |                   |  |  |   |        | 



|(1) | $1.094 annual rate of distribution per unit.
|--- | --------------------------------------------

|(2) | $1.375 annual rate of distribution per unit.
|--- | --------------------------------------------

|(3) | $2.720 annual rate of distribution per unit.
|--- | --------------------------------------------



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



(d) Accumulated Other Comprehensive Loss

The accumulated balances for each classification of other comprehensive loss as of March 31, 2011 are as follows (in thousands):



|                                                              |  |                                        |         |   |                            |   |        |                                     |  |   |         |  
|------------------------------------------------------------- |  | -------------------------------------- | ------- | - | -------------------------- | - | ------ | ----------------------------------- |  | - | ------- | -
|                                                              |  | Foreign currencytranslationadjustments |         |   | Cash flow hedgeadjustments |   |        | Accumulated othercomprehensive loss | 
|Balance as of December 31, 2010                               |  | $                                      | (36,051 | ) |                            | $ | (9,809 | )                                   |  | $ | (45,860 | )
|Net current period change                                     |  |                                        | 16,406  |   |                            |   | 1,506  |                                     |  |   | 17,912  |  
|Reclassification to interest expense from interest rate swaps |  |                                        |        |   |                            |   | 1,585  |                                     |  |   | 1,585   |  
|                                                              |  |                                        |         |   |                            |   |        |                                     |  |   |         |  
|Balance as of March 31, 2011                                  |  | $                                      | (19,645 | ) |                            | $ | (6,718 | )                                   |  | $ | (26,363 | )
|                                                              |  |                                        |         |   |                            |   |        |                                     |  |   |         |  

12. Incentive Plan

Our 2004 Incentive Award Plan provides for the grant of incentive awards to employees, directors and consultants. Awards issuable under the 2004 Incentive Award Plan include stock options, restricted
stock, dividend equivalents, stock appreciation rights, long-term incentive units, cash performance bonuses and other incentive awards. Only employees are eligible to receive incentive stock options under the 2004 Incentive Award Plan. Initially, we
had reserved a total of 4,474,102 shares of common stock for issuance pursuant to the 2004 Incentive Award Plan, subject to certain adjustments set forth in the 2004 Incentive Award Plan. On May 2, 2007, Digital Realty Trust, Inc.s
stockholders approved the First Amended and Restated Digital Realty Trust, Inc., Digital Realty Services, Inc. and Digital Realty Trust, L.P. 2004 Incentive Award Plan (as amended, the Amended and Restated 2004 Incentive Award Plan). The Amended and
Restated 2004 Incentive Award Plan increases the aggregate number of shares of stock which may be issued or transferred under the plan by 5,000,000 shares to a total of 9,474,102 shares, and provides that the maximum number of shares of stock
with respect to awards granted to any one participant during a calendar year will be 1,500,000 and the maximum amount that may be paid in cash during any calendar year with respect to any performance-based award not denominated in stock or otherwise
for which the foregoing limitation would not be an effective limitation for purposes of Section 162(m) of the Code will be $10.0 million.

As of March 31, 2011, 3,681,173 shares of common stock or awards convertible into or exchangeable for common stock remained available for future
issuance under the Amended and Restated 2004 Incentive Award Plan. Each long-term incentive and Class C unit issued under the Amended and Restated 2004 Incentive Award Plan will count as one share of common stock for purposes of calculating the
limit on shares that may be issued under the Amended and Restated 2004 Incentive Award Plan and the individual award limit discussed above.

(a) Long-Term Incentive Units

Long-term incentive units, which are also referred to
as profits interest units, may be issued to eligible participants for the performance of services to or for the benefit of the Operating Partnership. Long-term incentive units, whether vested or not, will receive the same quarterly per unit
distributions as Operating Partnership common units, which equal per share distributions on Digital Realty Trust, Inc. common stock. Initially, long-term incentive units do not have full parity with common units with respect to liquidating
distributions. If such parity is reached, vested long-term incentive units may be converted into an equal number of common units of the Operating Partnership at any time, and thereafter enjoy all the rights of common units of the Operating
Partnership, including redemption rights.

In order to achieve full parity with common units, long-term incentive units must be fully vested
and the holders capital account balance in respect of such long-term incentive units must be equal to the capital account balance of a holder of an equivalent number of common units. The capital account balance attributable to each common unit
is generally expected to be the same, in part because of the amount credited to a partners capital account upon the partners contribution of property to the Operating Partnership, and in part because the partnership agreement provides,
in most cases, that allocations of income, gain, loss and deduction (which will adjust the partners capital accounts) are to be made to the common units on a proportionate basis. As a result, with respect to a number of long-term incentive
units, it is possible to determine the capital account balance of an equivalent number of common units by multiplying the number of long-term incentive units by the capital account balance with respect to a common unit.



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



A partners initial capital account balance is equal to the amount the partner paid (or contributed
to the Operating Partnership) for the partners units and is subject to subsequent adjustments, including with respect to the partners share of income, gain or loss of the Operating Partnership. Because a holder of long-term incentive
units generally will not pay for the long-term incentive units, the initial capital account balance attributable to such long-term incentive units will be zero. However, the Operating Partnership is required to allocate income, gain, loss and
deduction to the partners capital accounts in accordance with the terms of the partnership agreement, subject to applicable Treasury Regulations. The partnership agreement provides that holders of long-term incentive units will receive special
allocations of gain in the event of a sale or hypothetical sale of assets of the Operating Partnership prior to the allocation of gain to Digital Realty Trust, Inc. or other limited partners with respect to their common units. The amount
of such allocation will, to the extent of any such gain, be equal to the difference between the capital account balance of a holder of long-term incentive units attributable to such units and the capital account balance attributable to an equivalent
number of common units. If and when such gain allocation is fully made, a holder of long-term incentive units will have achieved full parity with holders of common units. To the extent that, upon an actual sale or a hypothetical sale of
the Operating Partnerships assets as described above, there is not sufficient gain to allocate to a holders capital account with respect to long-term incentive units, or if such sale or hypothetical sale does not occur, such
units will not achieve parity with common units.

The term hypothetical sale refers to circumstances that are not actual sales of
the Operating Partnerships assets but that require certain adjustments to the value of the Operating Partnerships assets and the partners capital account balances. Specifically, the partnership agreement provides that, from time to
time, in accordance with applicable Treasury Regulations, the Operating Partnership will adjust the value of its assets to equal their respective fair market values, and adjust the partners capital accounts, in accordance with the terms of the
partnership agreement, as if the Operating Partnership sold its assets for an amount equal to their value. Times for making such adjustments generally include the liquidation of the Operating Partnership, the acquisition of an additional interest in
the Operating Partnership by a new or existing partner in exchange for more than a de minimis capital contribution, the distribution by the Operating Partnership to a partner of more than a de minimis amount of partnership property as consideration
for an interest in the Operating Partnership, in connection with the grant of an interest in the Operating Partnership (other than a de minimis interest) as consideration for the performance of services to or for the benefit of the Operating
Partnership (including the grant of a long-term incentive unit), and at such other times as may be desirable or required to comply with the Treasury Regulations.

During the three months ended March 31, 2011 and 2010, certain employees were granted an aggregate of 78,903 and 86,393 long-term incentive units, respectively. The grant date fair values, which equal the
market price of Digital Realty Trust, Inc. common stock, are being expensed on a straight-line basis over the vesting period of the long-term incentive units, which is four years. During the three months ended March 31, 2011 and 2010, certain
employees were also granted an aggregate of 98,632 and 107,993 long-term incentive units, respectively, which, in addition to a service condition, are subject to a performance condition that impacts the number of units in which the employee
ultimately vests. The performance condition is based upon our achievement of the respective fiscal years Funds From Operations per share targets. Upon evaluating the results of the performance condition, the final number of units is determined
and such units vest based on satisfaction of the service conditions. The service conditions of the awards provide for 20% vesting on each of the first and second anniversaries of the grant date and 30% vesting on each of the third and fourth
anniversaries of the grant date, provided the grantee continues employment on each anniversary date. Based on our 2010 FFO per diluted share and unit, all of the 2010 long-term incentive units satisfied the performance condition. The grant date fair
values, which equal the market price of Digital Realty Trust, Inc. common stock, are being expensed on a straight-line basis over the vesting period of the long-term incentive units, which ranges from four to five years.

The expense recorded for the three months ended March 31, 2011 and 2010 related to long-term incentive units was approximately $1.9 million and $1.2
million, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0.2 million and $0.2 million for the three months ended
March 31, 2011 and 2010, respectively. Unearned compensation representing the unvested portion of the long-term incentive units totaled $20.6 million and $12.9 million as of March 31, 2011 and December 31, 2010, respectively. We
expect to recognize this unearned compensation over the next 3.1 years on a weighted average basis.

(b) Class C Profits
Interest Units

On May 2, 2007, we granted awards of Class C Profits Interest Units of the Operating Partnership or similar
stock-based performance awards, which we refer to collectively as the Class C Units, under the Amended and Restated 2004 Incentive Award Plan (2007 Grant) to each of our named executive officers and certain other officers and employees.



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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



The Class C Units subject to this award were subject to vesting based on the achievement of a total
stockholder return (which we refer to as the market condition) as measured on November 1, 2008 (which we refer to as the first measurement date) and May 1, 2010 (which we refer to as the second measurement date). If:



| |  |  | with respect to the first measurement date, we achieved a total shareholder return equal to at least 18% over the period commencing on May 2, 2007
and ending on November 1, 2008; and
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | with respect to the second measurement date, we achieved a total shareholder return equal to at least 36% over a period commencing on May 2, 2007
and ending on the earlier of May 1, 2010 and the date of a change in control of our company,
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

the aggregate amount of
the 2007 Grant award was equal to 8% of the excess shareholder value, as defined, created during the applicable performance period, but in no event in excess of:



| |  |  | $17 million for the first measurement date; or
| | - |  | ----------------------------------------------



| |  |  | $40 million (less the amount of the award pool as of the first measurement date) for the second measurement date.
| | - |  | -----------------------------------------------------------------------------------------------------------------

We previously determined that the market condition with respect to the first measurement date was not achieved. On May 1, 2010, we determined that
613,485 of the Class C Units subject to the 2007 Grant satisfied the market condition on the second measurement date (May 1, 2010), with the value of these units equal to the maximum amount of the award pool payable pursuant to the 2007 Grant on the
second measurement date. Of the Class C Units that satisfied the market condition on May 1, 2010, 60% vested on May 1, 2010 and the remaining 40% will vest ratably each month thereafter for 24 months.

The fair value of the 2007 Grant was measured on the grant date using a Monte Carlo simulation to estimate the probability of the multiple market
conditions being satisfied. The Monte Carlo simulation uses a statistical formula underlying the Black-Scholes and binomial formulas, and such simulation was run approximately 100,000 times. For each simulation, the value of the payoff was
calculated at the settlement date and was then discounted to the grant date at a risk-free interest rate. The expected value of the Class C units on the grant date was determined by multiplying the average of the values over all simulations by the
number of outstanding shares of Digital Realty Trust, Inc. common stock and Operating Partnership units. The valuation was performed in a risk-neutral framework, so no assumption was made with respect to an equity risk premium. Other significant
assumptions used in the valuation included an expected term of 36 months, expected stock price volatility of 23%, a risk-free interest rate of 4.6%, and a dividend growth rate of 5.0 percent. The fixed award limit under the plan is $17 million for
the first market condition and $40 million for the second market condition, and there were 69.2 million shares of Digital Realty Trust, Inc. common stock and Operating Partnership units outstanding as of the 2007 grant date. The grant date fair
value of these awards of approximately $11.8 million will be recognized as compensation expense on a straight-line basis over the expected service period of five years. The unearned compensation as of March 31, 2011 and December 31, 2010
was $2.4 million and $2.9 million, respectively. As of March 31, 2011 and December 31, 2010, 469,320 and 439,653, respectively, of the Class C Units subject to the 2007 Grant had vested. We recognized compensation expense related to the
Class C Units subject to the 2007 Grant of $0.5 million and $0.5 million for the three months ended March 31, 2011 and 2010, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to
construction and successful leasing activities of $0.1 million and $0.1 million for the three months ended March 31, 2011 and 2010, respectively.

(c) Stock Options

The fair value of each option granted under the 2004 Incentive
Award Plan is estimated on the date of the grant using the Black-Scholes option-pricing model. For the three months ended March 31, 2011 and 2010, no stock options were granted. The fair values are being expensed on a straight-line basis over
the vesting period of the options, which ranges from four to five years. The expense recorded for the three months ended March 31, 2011 and 2010, respectively was approximately $0.2 million and $0.2 million, respectively. We capitalized amounts
relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0.1 million and $0.1 million for the three months ended March 31, 2011 and 2010, respectively. Unearned
compensation representing the unvested portion of the stock options totaled $1.0 million and $1.3 million as of March 31, 2011 and December 31, 2010, respectively. We expect to recognize this unearned compensation over the next 1.0 year on
a weighted average basis.



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



The following table summarizes the 2004 Incentive Award Plans stock option activity for the three
months ended March 31, 2011:



|                                         |  |                            |         |   |                                |   |       | 
|---------------------------------------- |  | -------------------------- | ------- | - | ------------------------------ | - | ----- | 
|                                         |  | Period endedMarch 31,
2011 |        
|                                         |  | Shares                     |         |   | Weighted averageexercise price |  
|Options outstanding, beginning of period |  |                            | 470,264 |   |                                | $ | 28.35 | 
|Exercised                                |  |                            | (23,232 | ) |                                |   | 37.27 | 
|Cancelled / Forfeited                    |  |                            | (2,334  | ) |                                |   | 41.73 | 
|                                         |  |                            |         |   |                                |   |       | 
|Options outstanding, end of period       |  |                            | 444,698 |   |                                | $ | 27.82 | 
|                                         |  |                            |         |   |                                |   |       | 
|Exercisable, end of period               |  |                            | 353,621 |   |                                | $ | 24.38 | 
|                                         |  |                            |         |   |                                |   |       | 

The following table summarizes information about stock options outstanding and exercisable as of March 31,
2011:



|                    |  |                   |                     |  |                                                 |  |      |                               |  |   |                          |  |  |                   |            |  |                                                 |  |         |                               |  |  |                          |  |  |   |       |  |  |   |            | 
|------------------- |  | ----------------- | ------------------- |  | ----------------------------------------------- |  | ---- | ----------------------------- |  | - | ------------------------ |  |  | ----------------- | ---------- |  | ----------------------------------------------- |  | ------- | ----------------------------- |  |  | ------------------------ |  |  | - | ----- |  |  | - | ---------- | 
|Options outstanding |  |                   | Options exercisable | 
|Exercise price      |  | Numberoutstanding |                     |  | Weightedaverageremainingcontractual life(years) |  |      | Weightedaverageexercise price |  |   | Aggregateintrinsic value |  |  | Numberexercisable |            |  | Weightedaverageremainingcontractual life(years) |  |         | Weightedaverageexercise price |  |  | Aggregateintrinsic value | 
|$12.00-13.02        |  |                   | 182,369             |  |                                                 |  | 3.58 |                               |  | $ | 12.01                    |  |  | $                 | 8,413,231  |  |                                                 |  | 182,369 |                               |  |  | 3.58                     |  |  | $ | 12.01 |  |  | $ | 8,413,231  | 
|$20.37-28.09        |  |                   | 25,973              |  |                                                 |  | 4.74 |                               |  |   | 23.61                    |  |  |                   | 896,839    |  |                                                 |  | 25,639  |                               |  |  | 4.74                     |  |  |   | 23.57 |  |  |   | 886,362    | 
|$33.18-41.73        |  |                   | 236,356             |  |                                                 |  | 6.02 |                               |  |   | 40.48                    |  |  |                   | 4,173,675  |  |                                                 |  | 145,613 |                               |  |  | 5.99                     |  |  |   | 40.01 |  |  |   | 2,640,004  | 
|                    |  |                   |                     |  |                                                 |  |      |                               |  |   |                          |  |  |                   |            |  |                                                 |  |         |                               |  |  |                          |  |  |   |       |  |  |   |            | 
|                    |  |                   | 444,698             |  |                                                 |  | 4.94 |                               |  | $ | 27.82                    |  |  | $                 | 13,483,745 |  |                                                 |  | 353,621 |                               |  |  | 4.66                     |  |  | $ | 24.38 |  |  | $ | 11,939,597 | 
|                    |  |                   |                     |  |                                                 |  |      |                               |  |   |                          |  |  |                   |            |  |                                                 |  |         |                               |  |  |                          |  |  |   |       |  |  |   |            | 

(d) Restricted Stock

During the three months ended March 31, 2011 and 2010, certain employees were granted an aggregate of 40,807 and 30,329 shares of restricted stock, respectively. The grant date fair values, which
equal the market price of Digital Realty Trust, Inc. common stock, are being expensed on a straight-line basis over the vesting period of the restricted stock, which is four years. During the three months ended March 31, 2011 and 2010, certain
employees were also granted an aggregate of 50,999 and 37,914 shares of restricted stock, respectively, which, in addition to a service condition, are subject to a performance condition that impacts the number of shares in which the employee
ultimately vests. The performance condition is based upon our achievement of the respective years FFO per share targets. Upon evaluating the results of the performance condition, the final number of shares is determined and such shares vest
based on satisfaction of the service conditions. The service conditions of the awards provide for 20% vesting on each of the first and second anniversaries of the grant date and 30% vesting on each of the third and fourth anniversaries of the grant
date provided the grantee continues employment on each anniversary date. Based on our 2010 FFO per diluted share and unit, all of the 2010 restricted stock satisfied the performance condition.

The expense recorded for the three months ended March 31, 2011 and 2010 related to grants of restricted stock was approximately $0.4 million and
$0.3 million, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0.3 million and $0.2 million for the three months ended
March 31, 2011 and 2010, respectively. Unearned compensation representing the unvested portion of the restricted stock totaled $8.2 million and $4.2 million as of March 31, 2011 and December 31, 2010, respectively. We expect to
recognize this unearned compensation over the next 3.4 years on a weighted average basis.



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



13. Derivative Instruments

Currently, we use interest rate caps and swaps to manage our interest rate risk. The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow
analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves. The fair values of
interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). The variable cash payments (or
receipts) are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves.

To
comply with the provisions of fair value accounting guidance, we incorporate credit valuation adjustments to appropriately reflect both our own nonperformance risk and the respective counterpartys nonperformance risk in the fair value
measurements. In adjusting the fair value of our derivative contracts for the effect of nonperformance risk, we have considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and
guarantees.

Although we have determined that the majority of the inputs used to value our derivatives fall within Level 2 of the fair
value hierarchy, the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by us and our counterparties. However, as of
December 31, 2010, we have assessed the significance of the impact of the credit valuation adjustments on the overall valuation of our derivative positions and have determined that the credit valuation adjustments are not significant to the
overall valuation of our derivatives. As a result, we have determined that our derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy.

Cash Flow Hedges of Interest Rate Risk

Our objectives in using interest rate derivatives are to add stability to interest expense and to manage our exposure to interest rate movements related to US LIBOR, GBP LIBOR and EURIBOR based mortgage
loans. To accomplish this objective, we primarily use interest rate swaps and caps as part of our interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a
counterparty in exchange for making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. Under an interest rate cap, if the reference interest rate, such as one-month LIBOR, increases above the cap
rate, the holder of the instrument receives a payment based on the notional value of the instrument, the length of the period, and the difference between the current reference rate and the cap rate. If the reference rate increases above the cap
rate, the payment received under the interest rate cap will offset the increase in the payments due under the variable rate notes payable.

We
record all our interest rate swaps and caps on the consolidated balance sheet at fair value. In determining the fair value of our interest rate swaps and caps, we consider the credit risk of our counterparties. These counterparties are generally
larger financial institutions engaged in providing a variety of financial services. These institutions generally face similar risks regarding adverse changes in market and economic conditions, including, but not limited to, fluctuations in interest
rates, exchange rates, equity and commodity prices and credit spreads. The current and pervasive disruptions in the financial markets have heightened the risks to these institutions.

Interest rate caps are viewed as a series of call options or caplets which exist for each period the cap agreement is in existence. As each caplet expires, the related cost of the expired caplet is
amortized to interest expense with the remaining caplets carried at fair value. The value of interest rate caps is primarily impacted by interest rates, market expectations about interest rates, and the remaining life of the instrument. In general,
increases in interest rates, or anticipated increases in interest rates, will increase the value of interest rate caps. As the remaining life of an interest rate cap decreases, the value of the instrument will generally decrease towards zero. The
purchase price of an interest rate cap is amortized to interest expense over the contractual life of the instrument. For interest rate caps that are designated as cash flow hedges under accounting guidance as it relates to derivative instruments,
the change in the fair value of an effective interest rate cap is recorded to accumulated other comprehensive income in equity. Amounts we are entitled to under interest rate caps, if any, are recognized on an accrual basis, and are recorded to as a
reduction against interest expense in the accompanying consolidated statements of operations.



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



Our agreements with some of our derivative counterparties provide either that (1) we could be
declared in default on our derivative obligations if repayment of the underlying indebtedness is accelerated by the lender due to our default on the indebtedness or (2) we could be declared in default on our derivative obligations if we default
on any of our indebtedness, including a default where repayment of the underlying indebtedness has not been accelerated by the lender.

The
effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive income (loss) and is subsequently reclassified into earnings in the period that the hedged
forecasted transaction affects earnings. During 2011, such derivatives were used to hedge the variable cash flows associated with existing variable-rate debt. The fair value of these derivatives was ($4.9) million and ($8.0) million at
March 31, 2011 and December 31, 2010, respectively. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. During the three months ended March 31, 2011 and 2010, respectively, there
were no ineffective portions to our interest rate swaps.

Amounts reported in accumulated other comprehensive loss related to interest rate
swaps will be reclassified to interest expense as interest payments are made on our debt. As of March 31, 2011, we estimate that an additional $4.1 million will be reclassified as an increase to interest expense during the twelve months ending
March 31, 2012, when the hedged forecasted transactions impact earnings.

As of March 31, 2011 and December 31, 2010, we had
the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk (in thousands):



|                   |         |     |                       |   |         |                                                            |  |  |            |  |  |                |       |  |                 |  |               |                    |  |  |                       |  |  |   |        |   |  |   |        |  
|------------------ | ------- | --- | --------------------- | - | ------- | ---------------------------------------------------------- |  |  | ---------- |  |  | -------------- | ----- |  | --------------- |  | ------------- | ------------------ |  |  | --------------------- |  |  | - | ------ | - |  | - | ------ | -
|Notional Amount    |         |     |                       |   |         | Fair Value at Significant OtherObservable Inputs (Level 2) | 
|As ofMarch 31,2011 |         |     | As ofDecember 31,2010 |   |         | Type ofDerivative                                          |  |  | StrikeRate |  |  | Effective Date |       |  | Expiration Date |  |               | As ofMarch 31,2011 |  |  | As ofDecember 31,2010 | 
|$                  | 19,875  | (1) |                       | $ | 19,515  | (1)                                                        |  |  | Swap       |  |  |                | 4.944 |  |                 |  | Jul. 10, 2006 |                    |  |  | Apr. 10, 2011         |  |  | $ | (23    | ) |  | $ | (231   | )
|                   | 68,640  | (1) |                       |   | 66,858  | (1)                                                        |  |  | Swap       |  |  |                | 2.980 |  |                 |  | April 6, 2009 |                    |  |  | Nov. 30, 2013         |  |  |   | (1,810 | ) |  |   | (2,471 | )
|                   | 14,727  | (2) |                       |   | 13,978  | (2)                                                        |  |  | Swap       |  |  |                | 3.981 |  |                 |  | May 17, 2006  |                    |  |  | Jul. 18, 2013         |  |  |   | (561   | ) |  |   | (828   | )
|                   | 10,655  | (2) |                       |   | 10,113  | (2)                                                        |  |  | Swap       |  |  |                | 4.070 |  |                 |  | Jun. 23, 2006 |                    |  |  | Jul. 18, 2013         |  |  |   | (427   | ) |  |   | (621   | )
|                   | 9,377   | (2) |                       |   | 8,900   | (2)                                                        |  |  | Swap       |  |  |                | 3.989 |  |                 |  | Jul. 27, 2006 |                    |  |  | Oct. 18, 2013         |  |  |   | (378   | ) |  |   | (557   | )
|                   | 43,652  | (2) |                       |   | 41,430  | (2)                                                        |  |  | Swap       |  |  |                | 3.776 |  |                 |  | Dec. 5, 2006  |                    |  |  | Jan. 18, 2012         |  |  |   | (761   | ) |  |   | (1,129 | )
|                   | 37,530  | (2) |                       |   | 35,620  | (2)                                                        |  |  | Swap       |  |  |                | 4.000 |  |                 |  | Dec. 20, 2006 |                    |  |  | Jan. 18, 2012         |  |  |   | (722   | ) |  |   | (1,054 | )
|                   | 42,474  | (2) |                       |   | 40,152  | (2)                                                        |  |  | Swap       |  |  |                | 2.703 |  |                 |  | Dec. 3, 2009  |                    |  |  | Sep. 4, 2014          |  |  |   | (225   | ) |  |   | (1,139 | )
|                   | 16,778  |     |                       |   | 16,976  |                                                            |  |  | Cap        |  |  |                | 4.000 |  |                 |  | June 24, 2009 |                    |  |  | June 25, 2012         |  |  |   | 1      |   |  |   | 3      |  
|                   | 20,500  |     |                       |   | 20,500  |                                                            |  |  | Cap        |  |  |                | 4.000 |  |                 |  | Aug. 4, 2010  |                    |  |  | June 15, 2013         |  |  |   | 25     |   |  |   | 30     |  
|                   |         |     |                       |   |         |                                                            |  |  |            |  |  |                |       |  |                 |  |               |                    |  |  |                       |  |  |   |        |   |  |   |        |  
|$                  | 284,208 |     |                       | $ | 274,042 |                                                            |  |  |            |  |  |                |       |  |                 |  |               |                    |  |  |                       |  |  | $ | (4,881 | ) |  | $ | (7,997 | )
|                   |         |     |                       |   |         |                                                            |  |  |            |  |  |                |       |  |                 |  |               |                    |  |  |                       |  |  |   |        |   |  |   |        |  



|(1) | Translation to U.S. dollars is based on exchange rate of $1.60 to £1.00 as of March 31, 2011 and $1.56 to £1.00 as of December 31, 2010.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------

|(2) | Translation to U.S. dollars is based on exchange rate of $1.42 to 1.00 as of March 31, 2011 and $1.34 to 1.00 as of December 31, 2010.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------

We do not have any fair value measurements using significant unobservable inputs (Level 3) as of March 31, 2011 or
December 31, 2010.



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



14. Fair Value of Instruments

We disclose fair value information about all financial instruments, whether or not recognized in the balance sheets, for which it is practicable to estimate fair value.

Current accounting guidance requires the Company to disclose fair value information about all financial instruments, whether or not recognized in the
balance sheets, for which it is practicable to estimate fair value. The Companys disclosures of estimated fair value of financial instruments at March 31, 2011 and December 31, 2010 were determined using available market information
and appropriate valuation methods. Considerable judgment is necessary to interpret market data and develop estimated fair value. The use of different market assumptions or estimation methods may have a material effect on the estimated fair value
amounts.

The carrying amounts for cash and cash equivalents, restricted cash, accounts and other receivables, accounts payable and other
accrued liabilities, security deposits and prepaid rents approximate fair value because of the short-term nature of these instruments. As described in note 13, the interest rate cap and interest rate swaps are recorded at fair value.

We calculate the fair value of our mortgage loans, unsecured senior notes and exchangeable senior debentures based on currently available
market rates assuming the loans are outstanding through maturity and considering the collateral and other loan terms, including excess exchange value which exists related to our 2026 Debentures. In determining the current market rate for fixed rate
debt, a market spread is added to the quoted yields on federal government treasury securities with similar maturity dates to debt. The carrying value of our revolving credit facility approximates fair value, due to the short-term nature of this
instrument along with the variability of interest rates.

As of March 31, 2011 and December 31, 2010, the aggregate estimated fair
value and carrying value of our revolving credit facility, unsecured senior notes, exchangeable senior debentures, mortgage loans and other secured loan were as follows (in thousands):



|                                     |  |                      |           |  |                         |   |           |                     |  |   |               |  |  |   |           | 
|------------------------------------ |  | -------------------- | --------- |  | ----------------------- | - | --------- | ------------------- |  | - | ------------- |  |  | - | --------- | 
|                                     |  | As of March 31, 2011 |           |  | As of December 31, 2010 |  
|                                     |  | EstimatedFair Value  |           |  | CarryingValue           |   |           | EstimatedFair Value |  |   | CarryingValue | 
|Revolving credit facility(1)         |  | $                    | 209,687   |  |                         | $ | 209,687   |                     |  | $ | 333,534       |  |  | $ | 333,534   | 
|Unsecured senior notes(2)(3)         |  |                      | 1,517,657 |  |                         |   | 1,465,351 |                     |  |   | 1,103,983     |  |  |   | 1,066,030 | 
|Exchangeable senior debentures(2)(3) |  |                      | 483,356   |  |                         |   | 318,669   |                     |  |   | 504,241       |  |  |   | 353,702   | 
|Mortgage loans(2)                    |  |                      | 1,085,768 |  |                         |   | 1,051,222 |                     |  |   | 1,078,220     |  |  |   | 1,043,188 | 
|Other secured loan                   |  |                      | 10,700    |  |                         |   | 10,500    |                     |  |   | 10,720        |  |  |   | 10,500    | 
|                                     |  |                      |           |  |                         |   |           |                     |  |   |               |  |  |   |           | 
|                                     |  | $                    | 3,307,168 |  |                         | $ | 3,055,429 |                     |  | $ | 3,030,698     |  |  | $ | 2,806,954 | 
|                                     |  |                      |           |  |                         |   |           |                     |  |   |               |  |  |   |           | 



|(1) | The carrying value of our revolving credit facility approximates estimated fair value, due to the short-term nature of this instrument along with the variability of
interest rates.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Valuations for our unsecured senior notes and mortgage loans are determined based on the expected future payments discounted at risk-adjusted rates. The 2015 Notes,
2020 Notes and 2021 Notes and exchangeable senior debentures are valued based on quoted market prices.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | The carrying value of the 2015 Notes, 2020 Notes and 2021 Notes are net of discount of $9,649 and $8,970 in the aggregate as of March 31, 2011 and
December 31, 2010, respectively. The carrying values of our exchangeable senior debentures are net of discount of $639 and $1,456 as of March 31, 2011 and December 31, 2010, respectively, related to our 2026 Debentures.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



15. Related Party Transactions

In December 2006, we entered into ten leases with tel(x), pursuant to which tel(x) provides enhanced meet-me-room services to our customers. The initial terms of these leases expire in 2026, and tel(x)
has options to extend them through 2046. tel(x) was acquired by GI Partners Fund II, LLP in November 2006. Richard Magnuson, our Chairman, is also the chief executive officer of the advisor to GI Partners Fund II, LLP. Our condensed consolidated
statements of operations include rental revenues of approximately $8.8 million and $5.1 million from tel(x) for the three months ended March 31, 2011 and 2010, respectively. In connection with the lease agreements, we entered into an operating
agreement with tel(x), effective as of December 1, 2006, with respect to joint sales and marketing efforts, designation of representatives to manage the national relationship between us and tel(x) and future meet-me-room facilities. Under the
operating agreement, tel(x) has a sixty-day option to enter into a meet-me-room lease for certain future meet-me-room buildings acquired by us or any buildings currently owned by us that are converted into a meet-me-room building. As of
March 31, 2011 and December 31, 2010, tel(x) leases 202,987 square feet from us under 31 lease agreements.

We also entered into an
agreement with tel(x), effective as of December 1, 2006, with respect to percentage rent arising out of potential future lease agreements for rentable space in buildings covered by the meet-me-room lease agreements. Percentage rent earned
during the three months ended March 31, 2011 and 2010 amounted to approximately $79,000 and $11,000, respectively.

In addition, in
connection with the lease agreements, we entered into a management agreement with tel(x), effective as of December 1, 2007, pursuant to which tel(x) agreed to provide us with certain management services in exchange for a management fee of one
percent of rents actually collected by tel(x).

We are party to seven leases with SoftLayer, of which five are in place as of March 31,
2011 and the remaining two will commence in future periods. The initial terms of these leases expire from 2013 to 2025, and SoftLayer has options to extend them from 2018 through 2035. On August 3, 2010, GI Partners Fund III, L.P. acquired a
controlling interest in SoftLayer. Richard Magnuson, our Chairman, is also a manager of the general partner to GI Partners Fund III, L.P. Our condensed consolidated statements of operations include rental revenues of approximately $2.3 million from
SoftLayer for the three months ended March 31, 2011. No rental revenues were earned from SoftLayer for the three months ended March 31, 2010.

16. Commitments and Contingencies

We have agreed with the seller of 350 East Cermak Road to share a portion, not to exceed $135,000 per month, of rental revenue, adjusted for our costs to lease the premises, from the leases of the 192,000
square feet of space held for redevelopment. This revenue sharing agreement will terminate in May 2012. We made payments of approximately $0.4 million and $10,000 to the seller during the three months ended March 31, 2011 and 2010,
respectively. We have recorded approximately $1.9 million and $2.3 million for this contingent liability on our consolidated balance sheet at March 31, 2011 and December 31, 2010, respectively.

As part of the acquisition of Clonshaugh Industrial Estate I, we entered into an agreement with the seller whereby the seller is entitled to receive 40%
of the net rental income generated by the existing building after we have received a 9% return on all capital invested in the property. As of February 6, 2006, the date we acquired this property, we have estimated the present value of these
expected payments over the 10 year lease term to be approximately $1.1 million and this value has been recorded as a component of the purchase price. Accounts payable and other liabilities include $1.4 million and $1.3 million for this liability as
of March 31, 2011 and December 31, 2010, respectively. There were no payments made to the seller during the three months ended March 31, 2011 and 2010.

Our properties require periodic investments of capital for tenant-related capital expenditures and for general capital improvements and from time to time in the normal course of our business, we enter
into various construction contracts with third parties that may obligate us to make payments. At March 31, 2011, we had open commitments related to construction contracts of approximately $102.2 million.

As part of the acquisition of 29A International Business Park, the seller could earn additional consideration based on future net operating income growth
in excess of certain performance targets, as defined. As of March 31, 2011, construction is not complete and there have been no leases executed that would cause an amount to become probable of payment and therefore no amount is accrued as of
March 31, 2011. The maximum amount that could be earned by the seller is S$50.0 million (or approximately $39.7 million based on the exchange rate as of March 31, 2011). The earnout contingency expires in November 2020.



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##### Table of Contents

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Continued)

March 31, 2011 and 2010

(unaudited)



17. Subsequent Events

On April 25, 2011, we declared the following dividends per share and the Operating Partnership declared an equivalent distribution per unit:



|                                                    |  |                         |              |  |                         |   |              |                             |  |   |              | 
|--------------------------------------------------- |  | ----------------------- | ------------ |  | ----------------------- | - | ------------ | --------------------------- |  | - | ------------ | 
|Share Class                                         |  | Series CPreferred Stock |              |  | Series DPreferred Stock |   |              | Common stock andcommon unit | 
|Dividend and distribution amount                    |  | $                       | 0.273438     |  |                         | $ | 0.343750     |                             |  | $ | 0.680000     | 
|Dividend and distribution payable date              |  |                         | June 30,2011 |  |                         |   | June 30,2011 |                             |  |   | June 30,2011 | 
|Dividend payable to shareholders of record on       |  |                         | June 15,2011 |  |                         |   | June 15,2011 |                             |  |   | June 15,2011 | 
|Annual equivalent rate of dividend and distribution |  | $                       | 1.094        |  |                         | $ | 1.375        |                             |  | $ | 2.720        | 

On April 15, 2011, we completed the
acquisition of a 38.8 acre development site located contiguous to our datacenter campus in Ashburn, Virginia. The purchase price was $17.3 million and was funded with borrowings under our revolving credit facility.



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##### Table of Contents

|ITEM 2. | MANAGEMENTS DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS.
|------- | --------------------------------------------------------------------------------------

The following discussion should be read in conjunction with the condensed consolidated financial statements and notes thereto appearing elsewhere in this
report. This report contains forward-looking statements within the meaning of the federal securities laws. In particular, statements pertaining to our capital resources, portfolio performance, leverage policy and acquisition and capital expenditure
plans, as well as our discussion of Factors Which May Influence Future Results of Operations, contain forward-looking statements. Likewise, all of our statements regarding anticipated market conditions, demographics and results of
operations are forward-looking statements. You can identify forward-looking statements by the use of forward-looking terminology such as believes, expects, may, will, should,
seeks, approximately, intends, plans, pro forma, estimates or anticipates or the negative of these words and phrases or similar words or phrases which are
predictions of or indicate future events or trends and discussions which do not relate solely to historical matters. You can also identify forward-looking statements by discussions of strategy, plans or intentions. Forward-looking statements involve
numerous risks and uncertainties and you should not rely on them as predictions of future events. Forward-looking statements depend on assumptions, data or methods that may be incorrect or imprecise and that we may not be able to realize. We do not
guarantee that the transactions and events described will happen as described (or that they will happen at all). The following factors, among others, could cause actual results and future events to differ materially from those set forth or
contemplated in the forward-looking statements: the impact of the recent deterioration in global economic, credit and market conditions; current local economic conditions in our geographic markets; decreases in information technology spending,
including as a result of economic slowdowns or recession; adverse economic or real estate developments in our industry or the industry sectors that we sell to (including risks relating to decreasing real estate valuations and impairment charges);
our dependence upon significant tenants; bankruptcy or insolvency of a major tenant or a significant number of smaller tenants; defaults on or non-renewal of leases by tenants; our failure to obtain necessary debt and equity financing; increased
interest rates and operating costs; risks associated with using debt to fund our business activities, including re-financing and interest rate risks, our failure to repay debt when due, adverse changes in our credit ratings or our breach of
covenants or other terms contained in our loan facilities and agreements; financial market fluctuations; changes in foreign currency exchange rates; our inability to manage our growth effectively; difficulty acquiring or operating properties in
foreign jurisdictions; our failure to successfully integrate and operate acquired or redeveloped properties; risks related to joint venture investments, including as a result of our lack of control of such investments; delays or unexpected costs in
development or redevelopment of properties; decreased rental rates or increased vacancy rates; increased competition or available supply of data center space; our inability to successfully develop and lease new properties and space held for
redevelopment; difficulties in identifying properties to acquire and completing acquisitions; our inability to acquire off-market properties; our inability to comply with the rules and regulations applicable to reporting companies; Digital Realty
Trust, Inc.s failure to maintain its status as a REIT; possible adverse changes to tax laws; restrictions on our ability to engage in certain business activities; environmental uncertainties and risks related to natural disasters; losses in
excess of our insurance coverage; changes in foreign laws and regulations, including those related to taxation and real estate ownership and operation; and changes in local, state and federal regulatory requirements, including changes in real estate
and zoning laws and increases in real property tax rates.

While forward-looking statements reflect our good faith beliefs, they are not
guaranties of future performance. We disclaim any obligation to publicly update or revise any forward-looking statement to reflect changes in underlying assumptions or factors, new information, data or methods, future events or other changes.

The risks included here are not exhaustive, and additional factors could adversely affect our business and financial performance, including
factors and risks included in other sections of this report, including under Part II, Item 1A, Risk Factors. Moreover, we operate in a very competitive and rapidly changing environment. New risk factors emerge from time to time and it is
not possible for management to predict all such risk factors, nor can we assess the impact of all such risk factors on the business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from
those contained in any forward-looking statements. Given these risks and uncertainties, you should not place undue reliance on forward-looking statements as a prediction of actual results.

Occupancy percentages discussed in the following discussion, for some of our properties, are calculated based on factors in addition to contractually leased square feet, including available power,
required support space and common area.

Overview

Our company. Digital Realty Trust, Inc. completed its initial public offering of common stock, or our IPO, on November 3, 2004. We believe that we have operated in a manner that has enabled
Digital Realty Trust, Inc. to qualify, and have elected to treat Digital Realty Trust, Inc., as a REIT under Sections 856 through 860 of the Code. Digital Realty Trust, Inc. was formed on March 9, 2004. During the period from our formation
until we commenced operations in connection with the completion of our IPO, we did not have any corporate activity other than the issuance of shares of Digital Realty Trust, Inc. common stock in connection with the initial capitalization of the
company. Our operating partnership was formed on July 20, 2004.



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Business and strategy. Our primary business objectives are to maximize: (i) sustainable
long-term growth in earnings and funds from operations per share and unit and (ii) cash flow and returns to our stockholders and our operating partnerships unitholders, including through the payment of distributions. We expect to achieve
our objectives by focusing on our core business of investing in and redeveloping technology-related real estate. A significant component of our current and future internal growth is anticipated through the development of our existing space held for
redevelopment and new properties. We target high quality, strategically located properties containing applications and operations critical to the day-to-day operations of corporate enterprise datacenter and technology industry tenants and properties
that may be redeveloped for such use. Most of our properties contain fully redundant electrical supply systems, multiple power feeds, above-standard precision cooling systems, raised floor areas, extensive in-building communications cabling and
high-level security systems. We focus solely on technology-related real estate because we believe that the growth in corporate datacenter adoption and the technology-related real estate industry generally will continue to be superior to that of the
overall economy.

As of March 31, 2011, we owned an aggregate of 96 technology-related real estate properties,
excluding two properties held as investments in unconsolidated joint ventures, with approximately 16.9 million rentable square feet including approximately 2.2 million square feet of space held for redevelopment. At March 31, 2011,
approximately 346,000 square feet of our space held for redevelopment was under construction for Turn-Key
Datacenter®, Powered Base Building® and build-to-suit space in seven U.S. markets and two European markets.

We have developed detailed, standardized procedures for evaluating acquisitions to ensure that they meet our financial, technical and other criteria. We expect to continue to acquire additional assets as
a part of our growth strategy. We intend to aggressively manage and lease our assets to increase their cash flow. We intend to continue to build out our redevelopment portfolio when justified by anticipated returns.

We may acquire properties subject to existing mortgage financing and other indebtedness or we may incur new indebtedness in connection with acquiring or
refinancing these properties. Debt service on such indebtedness will have a priority over any cash dividends with respect to Digital Realty Trust, Inc.s common stock and preferred stock. We currently intend to limit our indebtedness to 60% of
our total enterprise value and, based on the closing price of Digital Realty Trust, Inc. common stock on March 31, 2011 of $58.14, our ratio of debt to total enterprise value was approximately 33% as of March 31, 2011. Our total enterprise
value is defined as the sum of the market value of Digital Realty Trust, Inc.s outstanding common stock (which may decrease, thereby increasing our debt to total enterprise value ratio), excluding options issued under our companys
incentive award plan, plus the liquidation value of Digital Realty Trust, Inc.s preferred stock, plus the aggregate value of our operating partnerships units not held by Digital Realty Trust, Inc. (with the per unit value equal to the
market value of one share of its common stock and excluding long-term incentive units and Class C units), plus the book value of our total consolidated indebtedness.

Revenue base. As of March 31, 2011, we owned 96 properties through our operating partnership, excluding two properties held as investments in unconsolidated joint ventures. These properties
are mainly located throughout the U.S., with 14 properties located in Europe, one property in Asia and one property in Canada. We, through our predecessor, acquired our first portfolio property in January 2002 and have added properties as follows:



|                                      |  |                         |    |  |                            |  |            |                                                                    |  |  |           | 
|------------------------------------- |  | ----------------------- | -- |  | -------------------------- |  | ---------- | ------------------------------------------------------------------ |  |  | --------- | 
|Year Ended December 31:               |  | PropertiesAcquired 
(1) |    |  | Net
RentableSquareFeet (2) |  |            | Square Feet of Space Heldfor Redevelopment as ofMarch 31, 2011 (3) | 
|2002                                  |  |                         | 5  |  |                            |  | 1,125,292  |                                                                    |  |  | 19,890    | 
|2003                                  |  |                         | 6  |  |                            |  | 1,056,437  |                                                                    |  |  | 1,923     | 
|2004                                  |  |                         | 10 |  |                            |  | 2,489,367  |                                                                    |  |  | 197,102   | 
|2005                                  |  |                         | 20 |  |                            |  | 3,329,834  |                                                                    |  |  | 180,463   | 
|2006                                  |  |                         | 16 |  |                            |  | 2,114,790  |                                                                    |  |  | 106,808   | 
|2007(4)                               |  |                         | 13 |  |                            |  | 1,802,001  |                                                                    |  |  | 218,088   | 
|2008                                  |  |                         | 5  |  |                            |  | 266,776    |                                                                    |  |  | 297,472   | 
|2009                                  |  |                         | 6  |  |                            |  | 721,207    |                                                                    |  |  | 676,100   | 
|2010                                  |  |                         | 15 |  |                            |  | 1,722,563  |                                                                    |  |  | 538,899   | 
|                                      |  |                         |    |  |                            |  |            |                                                                    |  |  |           | 
|Properties owned as of March 31, 2011 |  |                         | 96 |  |                            |  | 14,628,267 |                                                                    |  |  | 2,236,745 | 
|                                      |  |                         |    |  |                            |  |            |                                                                    |  |  |           | 



|(1) | Excludes properties sold in 2007 and 2006: 100 Technology Center Drive (March 2007), 4055 Valley View Lane (March 2007) and 7979 East Tufts Avenue (July 2006). Also
excludes a leasehold interest acquired in March 2007 related to an acquisition made in 2006.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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|(2) | Current net rentable square feet as of March 31, 2011, which represents the current square feet at buildings under lease as specified in the applicable lease
agreements plus managements estimate of space available for lease based on engineering drawings. Includes tenants proportional share of common areas but excludes space held for redevelopment.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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|(3) | Redevelopment space is unoccupied space that requires significant capital investment in order to develop datacenter facilities that are ready for use. Most often this
is shell space. However, in certain circumstances this may include partially built datacenter space that was not completed by previous ownership and requires a large capital investment in order to build out the space. The amounts included in this
table represent redevelopment space as of March 31, 2011 in the properties acquired during the relevant period.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(4) | Includes two developed buildings (43915 Devin Shafron Drive and 43830 Devin Shafron Drive) placed into service in 2010 and 2011 that are being included with a property
(Devin Shafron buildings) that was acquired in 2007.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

As of March 31, 2011, the properties in our portfolio were
approximately 93.5% leased excluding 2.2 million square feet held for redevelopment. Due to the capital-intensive and long-term nature of the operations being supported, our lease terms are generally longer than standard commercial leases. As
of March 31, 2011, our original average lease term was approximately 14 years, with an average of approximately seven years remaining. The majority of our leasing since the completion of our IPO has been at lease terms shorter than 12 years.
Our lease expirations through December 31, 2012 are 8.3% of rentable square feet excluding space held for redevelopment as of March 31, 2011.

Operating revenues from properties outside the United States were $25.7 million and $23.2 million for the three months ended March 31, 2011 and 2010, respectively.

Factors Which May Influence Future Results of Operations

Global market and economic conditions

In the United States and globally, market and economic conditions have been unprecedented over the past few years and challenging with tighter credit conditions and slower economic growth in all markets
in which we own properties and conduct our operations. The U.S. and global economies have experienced a recession and face continued concerns about the systemic impact of adverse economic conditions, such as high energy costs, geopolitical issues,
the availability and cost of credit, unstable global financial and mortgage markets, high corporate, consumer and governmental debt levels, high unemployment and declining residential and commercial real estate markets.

As a result of these conditions, general economic conditions and the cost and availability of capital have been and may again be adversely affected in
some or all of the markets in which we own properties and conduct our operations. Renewed or increased turbulence in the U.S., European and other international financial markets and economies may adversely affect our ability, and the ability of our
tenants, to replace or renew maturing liabilities on a timely basis, access the capital markets to meet liquidity and capital expenditure requirements and may result in adverse effects on our, and our tenants, financial condition and results
of operations.

In addition, our access to funds under our revolving credit facility and other lines of credit depend on the ability of the
lenders that are parties to such facilities to meet their funding commitments to us. We cannot assure you that long-term disruptions in the global economy and the return of tighter credit conditions among, and potential failures or nationalizations
of, third party financial institutions as a result of such disruptions will not have an adverse effect on our lenders. If our lenders are not able to meet their funding commitments to us, our business, results of operation, cash flows and financial
condition could be adversely affected.

If we do not have sufficient cash flow to continue operating our business and are unable to borrow
additional funds, access our existing lines of credit or raise equity or debt capital, we may need to find alternative ways to increase our liquidity. Such alternatives may include, without limitation, curtailing development or redevelopment
activity, disposing of one or more of our properties possibly on disadvantageous terms or entering into or renewing leases on less favorable terms than we otherwise would.

Rental income. The amount of rental income generated by the properties in our portfolio depends principally on our ability to maintain or improve the occupancy rates of currently leased space and
to lease currently available space and space available from lease terminations. Excluding 2.2 million square feet held for redevelopment, as of March 31, 2011, the occupancy rate of the properties in our portfolio was approximately 93.5%
of our net rentable square feet.

The amount of rental income generated by us also depends on our ability to maintain or
increase rental rates at our properties. Included in our approximately 14.7 million net rentable square feet, excluding redevelopment space, at March 31, 2011 is approximately 232,000 net rentable square feet of space with extensive
datacenter improvements that is currently, or will shortly be, available for lease. Since our IPO, we have leased approximately 2,472,000 square feet of similar space. These Turn-Key Datacenters® are effective solutions for tenants who lack the expertise or capital budget to provide their own extensive datacenter infrastructure and security. Our expertise in
datacenter construction and operations enables us to lease space to these tenants at a significant premium over other uses. In addition, as of March 31, 2011, we had approximately 2.2 million square feet of redevelopment space, or
approximately 13% of the total rentable space in our portfolio, including four vacant properties comprising approximately 409,000 square feet. Our ability to grow earnings depends in part on our ability to redevelop space and lease
redevelopment space at favorable rates, which we may not be able to obtain. Redevelopment space requires significant capital investment in order to develop datacenter facilities that are ready for use and, in addition, we may require additional time
or encounter delays in securing tenants for redevelopment space. We may purchase additional vacant properties and properties with vacant



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redevelopment space in the future. We will require additional capital to finance our redevelopment activities, which may not be available or may not be available on terms acceptable to us,
including as a result of the conditions described above under Global market and economic conditions.

Economic downturns,
including as a result of the conditions described above under Global market and economic conditions, or regional downturns affecting our sub-markets or downturns in the technology-related real estate industry that impair our ability to
lease or renew or re-lease space, or otherwise reduce returns on our investments or the ability of our tenants to fulfill their lease commitments, as in the case of tenant bankruptcies, could adversely affect our ability to maintain or increase
rental rates at our properties. As of March 31, 2011, we had no material tenants in bankruptcy.

Scheduled lease expirations.Our
ability to re-lease expiring space at rental rates equal to or in excess of current rental rates will impact our results of operations. In addition to approximately 0.9 million square feet of available space in our portfolio, which excludes
approximately 2.2 million square feet available for redevelopment as of March 31, 2011, leases representing approximately 6.0% and 2.3% of the net rentable square footage of our portfolio are scheduled to expire during the nine months
ending December 31, 2011 and for the year ending December 31, 2012, respectively.

Market concentration.We depend on the
market for technology-based real estate in specific geographic regions and significant changes in these regional markets can impact our future results. As of March 31, 2011, our portfolio was geographically concentrated in the following
metropolitan markets:



|                    |  |                                        |       |  
|------------------- |  | -------------------------------------- | ----- | -
|Metropolitan Market |  | March 31, 2011total annualizedrent (1) |      
|Silicon Valley      |  |                                        | 14.2  | %
|Northern Virginia   |  |                                        | 10.4  | %
|San Francisco       |  |                                        | 10.0  | %
|New York Metro      |  |                                        | 9.8   | %
|Chicago             |  |                                        | 9.7   | %
|Phoenix             |  |                                        | 8.9   | %
|Dallas              |  |                                        | 8.2   | %
|Boston              |  |                                        | 6.0   | %
|Los Angeles         |  |                                        | 4.8   | %
|London, England     |  |                                        | 4.3   | %
|Dublin, Ireland     |  |                                        | 2.8   | %
|Paris, France       |  |                                        | 2.6   | %
|Other               |  |                                        | 8.3   | %
|                    |  |                                        |       |  
|                    |  |                                        | 100.0 | %
|                    |  |                                        |       |  



|(1) | Annualized rent is monthly contractual rent under existing leases as of March 31, 2011 multiplied by 12.
|--- | --------------------------------------------------------------------------------------------------------

Operating expenses.Our operating expenses generally consist of utilities, property and ad valorem taxes, property management
fees, insurance and site maintenance costs, as well as rental expenses on our ground and building leases. In particular, our buildings require significant power to support the datacenter operations contained in them. Many of our leases contain
provisions under which the tenants reimburse us for a portion of property operating expenses and real estate taxes incurred by us. However, we generally are not entitled to reimbursement of property operating expenses and real estate taxes under our
leases for Turn-Key Datacenters®. We also incur general and administrative expenses, including expenses relating
to our asset management function, as well as significant legal, accounting and other expenses related to corporate governance, SEC reporting and compliance with the various provisions of the Sarbanes-Oxley Act. Increases or decreases in such
operating expenses will impact our overall performance. We expect to incur additional operating expenses as we continue to expand.

Climate
change legislation.In June 2009, the U.S. House of Representatives approved comprehensive clean energy and climate change legislation intended to cut greenhouse gas, or GHG, emissions, create new clean energy jobs and enhance the energy
independence of the United States, which included a cap-and-trade program for GHG emissions. The U.S. Senate did not pass similar legislation during 2009 or 2010, and following Congressional elections in November 2010 (in which control of the House
of Representatives passed from the Democratic Party to the Republican Party), the likelihood that Congress will pass any climate change and/or energy legislation that would include a cap-and-trade program, or any similar type program, for GHG
emissions in 2011 has diminished. As a result, action to reduce GHG emissions likely will be focused on regulatory agencies, primarily the U.S. Environmental Protection Agency, or EPA, and state actions. The EPA has been moving aggressively to
regulate GHG emissions



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from automobiles and large stationary sources, including electricity producers, using its own authority under the Clean Air Act. Some of those regulations have been finalized and currently are in
litigation. States have also taken actions to regulate GHG emissions. For example, California enacted AB 32, the Global Warming Solutions Act of 2006, which established the first statewide program in the United States to limit GHG
emissions and impose penalties for non-compliance. The California Air Resources Board, or CARB, has taken, and plans to take, various actions to implement AB 32, including the approval in December 2008 of an AB 32 Scoping Plan summarizing the
main GHG-reduction strategies for California. CARB approved in December 2010 a GHG cap-and-trade program, which is scheduled to take effect in 2012. As another example of state action, the Western Climate Initiative, which currently
includes seven states and four Canadian provinces, has developed GHG reduction strategies, among them a GHG cap-and-trade program. In addition, since 2005 the European Union (including the United Kingdom) has been operating under a cap-and-trade
program, which directly affects the largest emitters of greenhouse gases, including electricity producers from whom we purchase power. Any additional taxation or regulation of energy use, including as a result of (i) new legislation that
Congress may pass, (ii) the regulations that the U.S. EPA has proposed or finalized, (iii) regulations under legislation that states have passed or may pass, or (iv) any further reductions in the EU greenhouse gas cap could
significantly increase our costs, and we may not be able to effectively pass all of these costs on to our tenants.

Interest rates. As
of March 31, 2011, we had approximately $284.2 million of variable rate debt, all of which was mortgage debt subject to interest rate cap or swap agreements, and $209.7 million was outstanding on our revolving credit facility. The availability
of debt and equity capital has significantly decreased as a result of the circumstances described above under Global market and economic conditions. The effects on commercial real estate mortgages, if available, include, but may not be
limited to: higher loan spreads, tightened loan covenants, reduced loan to value ratios resulting in lower borrower proceeds and higher principal payments. Potential future increases in interest rates and credit spreads may increase our interest
expense and fixed charges and negatively affect our financial condition and results of operations, potentially impacting our future access to the debt and equity capital markets. Increased interest rates may also increase the risk that the
counterparties to our swap agreements will default on their obligations, which could further increase our interest expense. If we cannot obtain capital from third party sources, we may not be able to acquire or develop properties when strategic
opportunities exist, satisfy our debt service obligations or pay the cash dividends to Digital Realty Trust, Inc.s stockholders necessary to maintain its qualification as a REIT.

Demand for datacenter space. Our portfolio of properties consists primarily of technology-related real estate and datacenter real estate in particular. A decrease in the demand for, or increase in
supply of, datacenter space, Internet gateway facilities or other technology-related real estate would have a greater adverse effect on our business and financial condition than if we owned a portfolio with a more diversified tenant base or less
specialized use. Our redevelopment activities make us particularly susceptible to general economic slowdowns, including recessions and the other circumstances described above under Global market and economic conditions, as well as
adverse developments in the corporate datacenter, Internet and data communications and broader technology industries. Any such slowdown or adverse development could lead to reduced corporate IT spending or reduced demand for datacenter space.
Reduced demand could also result from business relocations, including to markets that we do not currently serve. Changes in industry practice or in technology, such as virtualization technology, more efficient computing or networking devices, or
devices that require higher power densities than todays devices, could also reduce demand for the physical datacenter space we provide or make the tenant improvements in our facilities obsolete or in need of significant upgrades to remain
viable. In addition, the development of new technologies, the adoption of new industry standards or other factors could render many of our tenants current products and services obsolete or unmarketable and contribute to a downturn in their
businesses, thereby increasing the likelihood that they default under their leases, become insolvent or file for bankruptcy. In addition, demand for datacenter space in our properties, or the rates at which we lease space, may be adversely impacted
either across our portfolio or in specific submarkets as a result of an increase in the number of competitors, or the amount of space being offered in our markets and other markets by our competitors.

Critical Accounting Policies

Our discussion and analysis of our financial condition and results of operations are based upon our condensed consolidated financial statements, which have been prepared in accordance with U.S. generally
accepted accounting principles, or GAAP. The preparation of these financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial
statements and the reported amount of revenues and expenses in the reporting period. Our actual results may differ from these estimates. We have provided a summary of our significant accounting policies in note 2 to our condensed consolidated
financial statements included elsewhere in this report. We describe below those accounting policies that require material subjective or complex judgments and that have the most significant impact on our financial condition and consolidated results
of operations. Our management evaluates these estimates on an ongoing basis, based upon information currently available and on various assumptions management believes are reasonable as of the date on the front cover of this report.

Investments in Real Estate

Acquisition of real estate.The price that we pay to acquire a property is impacted by many factors including the condition of the property and improvements, the occupancy of the building, the
existence of above and below market tenant leases, the creditworthiness of the tenants, favorable or unfavorable financing, above or below market ground leases and numerous other factors.



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Accordingly, we are required to make subjective assessments to allocate the purchase price paid to acquire investments in real estate among the assets acquired and liabilities assumed based on
our estimate of the fair values of such assets and liabilities. This includes determining the value of the property and improvements, land, any ground leases, tenant improvements, in-place tenant leases, tenant relationships, the value (or negative
value) of above (or below) market leases, any debt or deferred taxes assumed from the seller or loans made by the seller to us and any building leases assumed from the seller. Each of these estimates requires a great deal of judgment and some of the
estimates involve complex calculations. These allocation assessments have a direct impact on our results of operations. For example, if we were to allocate more value to land, there would be no depreciation with respect to such amount. If we were to
allocate more value to the property as opposed to allocating to the value of in-place tenant leases, this amount would be recognized as an expense over a much longer period of time. This potential effect occurs because the amounts allocated to
property are depreciated over the estimated lives of the property whereas amounts allocated to in-place tenant leases are amortized over the estimated term (including renewal and extension assumptions) of the leases. Additionally, the amortization
of the value (or negative value) assigned to above (or below) market rate leases is recorded as an adjustment to rental revenue as compared to amortization of the value of in-place tenant leases and tenant relationships, which is included in
depreciation and amortization in our consolidated statements of operations.

Useful lives of assets.We are required to make subjective
assessments as to the useful lives of our properties for purposes of determining the amount of depreciation to record on an annual basis with respect to our investments in real estate. These assessments have a direct impact on our net income because
if we were to shorten the expected useful lives of our investments in real estate we would depreciate such investments over fewer years, resulting in more depreciation expense and lower net income on an annual basis.

Asset impairment evaluation.We review each of our properties for indicators that its carrying amount may not be recoverable. Examples of such
indicators may include a significant decrease in the market price of the property, a significant adverse change in the extent or manner in which the property is being used in its physical condition or expected to be used based on the underwriting at
the time of acquisition, an accumulation of costs significantly in excess of the amount originally expected for the acquisition or development of the property, or a history of operating or cash flow losses of the property. When such impairment
indictors exist, we review an estimate of the future cash flows (excluding interest charges) expected to result from the real estate investments use and eventual disposition and compare that estimate to the carrying value of the property. We
consider factors such as future operating income, trends and prospects, as well as the effects of leasing demand, competition and other factors. If our undiscounted net cash flow evaluation indicates that we are unable to recover the carrying value
of a real estate investment, an impairment loss is recorded to the extent that the carrying value exceeds the estimated fair value of the property. These losses have a direct impact on our net income because recording an impairment loss results in
an immediate negative adjustment to net income. The evaluation of anticipated cash flows is highly subjective and is based in part on assumptions regarding future occupancy, rental rates and capital requirements that could differ materially from
actual results in future periods. Since cash flows on properties considered to be long-lived assets to be held and used are considered on an undiscounted basis to determine whether the carrying value of a property is recoverable, our strategy of
holding properties over the long-term directly decreases the likelihood of their carrying values not being recoverable and therefore requiring the recording of an impairment loss. If our strategy changes or market conditions otherwise dictate an
earlier sale date, an impairment loss may be recognized and such loss could be material. If we determine that the asset fails the recoverability test, the affected assets must be reduced to their fair value. No such impairment losses have been
recognized to date.

We generally estimate the fair value of rental properties utilizing a discounted cash flow analysis that includes
projections of future revenues, expenses and capital improvement costs that a market participant would use based on the highest and best use of the asset, which is similar to the income approach that is commonly utilized by appraisers.

Revenue Recognition

Rental income is recognized using the straight-line method over the terms of the tenant leases. Deferred rents included in our consolidated balance sheets represent the aggregate excess of rental revenue
recognized on a straight-line basis over the contractual rental payments that would be received under the remaining terms of the leases. Many of our leases contain provisions under which the tenants reimburse us for a portion of property operating
expenses and real estate taxes incurred by us. However, we generally are not entitled to reimbursement of property operating expenses, other than utility expense, and real estate taxes under our leases for Turn-Key Datacenters®. Such reimbursements are recognized in the period that the expenses are incurred. Lease termination fees are
recognized over the remaining term of the lease, effective as of the date the lease modification is finalized, assuming collection is not considered doubtful. As discussed above, we recognize amortization of the value of acquired above or below
market tenant leases as a reduction of rental income in the case of above market leases or an increase to rental revenue in the case of below market leases.

We must make subjective estimates as to when our revenue is earned and the collectability of our accounts receivable related to minimum rent, deferred rent, expense reimbursements, lease termination fees
and other income. We specifically analyze accounts receivable and historical bad debts, tenant concentrations, tenant creditworthiness and current economic trends when evaluating the adequacy of the allowance for bad debts. These estimates have a
direct impact on our net income because a higher bad debt allowance would result in lower net income, and recognizing rental revenue as earned in one period versus another would result in higher or lower net income for a particular period.



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Share-based Awards

We recognize compensation expense related to share-based awards. We generally amortize this compensation expense over the vesting period of the award. The calculation of the fair value of share-based
awards is subjective and requires several assumptions over such items as expected stock volatility, dividend payments and future company results. These assumptions have a direct impact on our net income because a higher share-based awards amount
would result in lower net income for a particular period.



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Results of Operations

The discussion below relates to our financial condition and results of operations for the three months ended March 31, 2011 and 2010. A summary of our operating results for the three months ended
March 31, 2011 and 2010 is as follows (in thousands):



|                              |  |                              |          |   |      |   |          |  
|----------------------------- |  | ---------------------------- | -------- | - | ---- | - | -------- | -
|                              |  | Three Months Ended March 31, |         
|                              |  | 2011                         |          |   | 2010 |  
|Statement of Operations Data: |  |                              |          |   |      |   |          |  
|Total operating revenues      |  | $                            | 250,741  |   |      | $ | 191,779  |  
|Total operating expenses      |  |                              | (176,076 | ) |      |   | (136,584 | )
|                              |  |                              |          |   |      |   |          |  
|Operating income              |  |                              | 74,665   |   |      |   | 55,195   |  
|Other expenses, net           |  |                              | (35,653  | ) |      |   | (29,609  | )
|                              |  |                              |          |   |      |   |          |  
|Net income                    |  | $                            | 39,012   |   |      | $ | 25,586   |  
|                              |  |                              |          |   |      |   |          |  

Our property portfolio has experienced consistent and significant growth since the first property acquisition in January
2002. As a result of this growth, our period-to-period comparison of our financial performance focuses on the impact on our revenues and expenses resulting both from the new property additions to our portfolio, as well as on a same store
property basis (same store properties are properties that were owned and operated for the entire current period and the entire immediate preceding year). The following table identifies each of the properties in our portfolio acquired from
January 1, 2010 through March 31, 2011.



|                                        |  |  |    |   |                 |  |        |                                            |  |  |                                                        |  |  |                                        |            |  |                                     |  |            |  |  |  |       |  
|--------------------------------------- |  |  | -- | - | --------------- |  | ------ | ------------------------------------------ |  |  | ------------------------------------------------------ |  |  | -------------------------------------- | ---------- |  | ----------------------------------- |  | ---------- |  |  |  | ----- | -
|Acquired Buildings                      |  |  |    |   | AcquisitionDate |  |        | RedevelopmentSpace as ofMarch 31, 2011 (1) |  |  | Net RentableSquare FeetExcludingRedevelopmentSpace (2) |  |  | Square FeetIncludingRedevelopmentSpace |            |  | Occupancy Rateas
ofMarch 31,2011(3) | 
|As of December 31, 2009 (81 properties) |  |  |    |   |                 |  |        |                                            |  |  | 1,594,805                                              |  |  |                                        | 12,763,215 |  |                                     |  | 14,358,020 |  |  |  | 93.8  | %
|                                        |  |  |    |   |                 | 
|January 1, 2010 through March 31, 2011  |  |  |    |   |                 |  |        |                                            |  |  |                                                        |  |  |                                        |            |  |                                     |  |            |  |  |  |       |  
|                                        |  |  |    |   |                 | 
|128 First Avenue                        |  |  |    |   |                 |  | Jan-10 |                                            |  |  |                                                       |  |  |                                        | 274,750    |  |                                     |  | 274,750    |  |  |  | 99.6  |  
|55 Middlesex Turnpike                   |  |  |    |   |                 |  | Jan-10 |                                            |  |  |                                                       |  |  |                                        | 106,000    |  |                                     |  | 106,000    |  |  |  | 89.7  |  
|60-80 Merritt Boulevard                 |  |  |    |   |                 |  | Jan-10 |                                            |  |  |                                                       |  |  |                                        | 169,540    |  |                                     |  | 169,540    |  |  |  | 100.0 |  
|43915 Devin Shafron Drive               |  |  | (4 | ) |                 |  | Jan-10 |                                            |  |  | 6,588                                                  |  |  |                                        | 125,692    |  |                                     |  | 132,280    |  |  |  | 100.0 |  
|1725 Comstock Street                    |  |  |    |   |                 |  | Apr-10 |                                            |  |  |                                                       |  |  |                                        | 39,643     |  |                                     |  | 39,643     |  |  |  | 66.7  |  
|3105 and 3115 Alfred Street             |  |  |    |   |                 |  | May-10 |                                            |  |  | 24,005                                                 |  |  |                                        | 25,853     |  |                                     |  | 49,858     |  |  |  | 100.0 |  
|Cateringweg 5                           |  |  |    |   |                 |  | Jun-10 |                                            |  |  | 55,972                                                 |  |  |                                        |           |  |                                     |  | 55,972     |  |  |  |      |  
|365 Main Street                         |  |  |    |   |                 |  | Jul-10 |                                            |  |  |                                                       |  |  |                                        | 226,981    |  |                                     |  | 226,981    |  |  |  | 84.8  |  
|720 2nd Street                          |  |  |    |   |                 |  | Jul-10 |                                            |  |  |                                                       |  |  |                                        | 121,220    |  |                                     |  | 121,220    |  |  |  | 97.3  |  
|2260 East El Segundo Boulevard          |  |  |    |   |                 |  | Jul-10 |                                            |  |  |                                                       |  |  |                                        | 132,240    |  |                                     |  | 132,240    |  |  |  | 100.0 |  
|2121 South Price Road                   |  |  |    |   |                 |  | Jul-10 |                                            |  |  |                                                       |  |  |                                        | 293,479    |  |                                     |  | 293,479    |  |  |  | 96.5  |  
|4030-4050 La Fayette                    |  |  |    |   |                 |  | Jul-10 |                                            |  |  |                                                       |  |  |                                        | 145,403    |  |                                     |  | 145,403    |  |  |  | 80.8  |  
|800 Central Expressway                  |  |  |    |   |                 |  | Aug-10 |                                            |  |  | 150,000                                                |  |  |                                        |           |  |                                     |  | 150,000    |  |  |  |      |  
|2950 Zanker Road                        |  |  |    |   |                 |  | Aug-10 |                                            |  |  |                                                       |  |  |                                        | 69,700     |  |                                     |  | 69,700     |  |  |  | 100.0 |  
|900 Dorothy Drive                       |  |  |    |   |                 |  | Aug-10 |                                            |  |  |                                                       |  |  |                                        | 56,176     |  |                                     |  | 56,176     |  |  |  | 100.0 |  
|29A International Business Park         |  |  |    |   |                 |  | Nov-10 |                                            |  |  | 308,922                                                |  |  |                                        | 61,578     |  |                                     |  | 370,500    |  |  |  | 16.8  |  
|43830 Devin Shafron Drive               |  |  | (4 | ) |                 |  | Mar-11 |                                            |  |  | 96,453                                                 |  |  |                                        | 16,797     |  |                                     |  | 113,250    |  |  |  | 27.0  |  
|                                        |  |  |    |   |                 |  |        |                                            |  |  |                                                        |  |  |                                        |            |  |                                     |  |            |  |  |  |       |  
|Subtotal                                |  |  |    |   |                 |  |        |                                            |  |  | 641,940                                                |  |  |                                        | 1,865,052  |  |                                     |  | 2,506,992  |  |  |  | 90.9  | %
|                                        |  |  |    |   |                 |  |        |                                            |  |  |                                                        |  |  |                                        |            |  |                                     |  |            |  |  |  |       |  
|Total                                   |  |  |    |   |                 |  |        |                                            |  |  | 2,236,745                                              |  |  |                                        | 14,628,267 |  |                                     |  | 16,865,012 |  |  |  | 93.5  | %
|                                        |  |  |    |   |                 |  |        |                                            |  |  |                                                        |  |  |                                        |            |  |                                     |  |            |  |  |  |       |  



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|(1) | Redevelopment space requires significant capital investment in order to develop datacenter facilities that are ready for use. Most often this is shell space. However,
in certain circumstances this may include partially built datacenter space that was not completed by previous ownership and requires a large capital investment in order to build out the space.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Net rentable square feet at a building represents the current square feet at that building under lease as specified in the lease agreements plus managements
estimate of space available for lease based on engineering drawings. Net rentable square feet includes tenants proportional share of common areas but excludes space held for redevelopment.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Occupancy rates exclude redevelopment space. For some of our properties, we calculate occupancy based on factors in addition to contractually leased square feet,
including available power, required support space and common area.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(4) | Represents two developed buildings placed into service in 2010 and 2011 that are being included with a property (Devin Shafron buildings) that was acquired in 2007.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------

In May 2008, we acquired 701 & 717 Leonard Street, a parking garage in Dallas, Texas; however, we exclude the
acquisition from our property count because it is located adjacent to our internet gateway datacenter located at 2323 Bryan Street and is not considered a separate property.

Comparison of the Three Months Ended March 31, 2011 to the Three Months Ended March 31, 2010

Portfolio

As of March 31, 2011, our portfolio consisted of 96 properties, excluding
two properties held as investments in unconsolidated joint ventures, with an aggregate of 16.9 million net rentable square feet including 2.2 million square feet held for redevelopment compared to a portfolio consisting of 84 properties,
excluding one property held as an investment in an unconsolidated joint venture, with an aggregate of 15.0 million net rentable square feet including 1.8 million square feet held for redevelopment as of March 31, 2010. The increase in
our portfolio reflects the acquisition of 12 properties in the twelve months ended March 31, 2011.

Operating Revenues

Operating revenues during the three months ended March 31, 2011 and 2010 were as follows (in thousands):



|                            |  |                              |         |  |      |   |         |        |  |   |        | 
|--------------------------- |  | ---------------------------- | ------- |  | ---- | - | ------- | ------ |  | - | ------ | 
|                            |  | Three Months Ended March 31, |        
|                            |  | 2011                         |         |  | 2010 |   |         | Change | 
|Rental                      |  | $                            | 196,795 |  |      | $ | 151,306 |        |  | $ | 45,489 | 
|Tenant reimbursements       |  |                              | 51,834  |  |      |   | 39,059  |        |  |   | 12,775 | 
|Construction management fee |  |                              | 1,817   |  |      |   | 1,414   |        |  |   | 403    | 
|Other                       |  |                              | 295     |  |      |   |        |        |  |   | 295    | 
|                            |  |                              |         |  |      |   |         |        |  |   |        | 
|Total operating revenues    |  | $                            | 250,741 |  |      | $ | 191,779 |        |  | $ | 58,962 | 
|                            |  |                              |         |  |      |   |         |        |  |   |        | 

As shown by the same store and new properties table below, the increases in rental revenues and tenant reimbursement
revenues for the three month period ended March 31, 2011 compared to the same period in 2010 were primarily due to new leasing at our same store properties and acquisition of properties. We acquired 12 properties during the twelve months ended
March 31, 2011.



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The following table shows operating revenues for new properties (properties that were acquired after
December 31, 2009) and same store properties (all other properties) (in thousands):



|                            |  |                              |         |  |                              |   |         |        |  |   |        |  |  |      |        |  |        |   |        |  |  |   |        | 
|--------------------------- |  | ---------------------------- | ------- |  | ---------------------------- | - | ------- | ------ |  | - | ------ |  |  | ---- | ------ |  | ------ | - | ------ |  |  | - | ------ | 
|                            |  | Same Store                   |         |  | New Properties               |  
|                            |  | Three Months Ended March 31, |         |  | Three Months Ended March 31, |  
|                            |  | 2011                         |         |  | 2010                         |   |         | Change |  |   | 2011   |  |  | 2010 |        |  | Change |  
|Rental                      |  | $                            | 153,169 |  |                              | $ | 142,035 |        |  | $ | 11,134 |  |  | $    | 43,626 |  |        | $ | 9,271  |  |  | $ | 34,355 | 
|Tenant reimbursements       |  |                              | 38,418  |  |                              |   | 35,839  |        |  |   | 2,579  |  |  |      | 13,416 |  |        |   | 3,220  |  |  |   | 10,196 | 
|Construction management fee |  |                              |        |  |                              |   |        |        |  |   |       |  |  |      | 1,817  |  |        |   | 1,414  |  |  |   | 403    | 
|Other                       |  |                              | 295     |  |                              |   |        |        |  |   | 295    |  |  |      |       |  |        |   |       |  |  |   |       | 
|                            |  |                              |         |  |                              |   |         |        |  |   |        |  |  |      |        |  |        |   |        |  |  |   |        | 
|Total operating revenues    |  | $                            | 191,882 |  |                              | $ | 177,874 |        |  | $ | 14,008 |  |  | $    | 58,859 |  |        | $ | 13,905 |  |  | $ | 44,954 | 
|                            |  |                              |         |  |                              |   |         |        |  |   |        |  |  |      |        |  |        |   |        |  |  |   |        | 

Same store rental revenues increased for the three months ended March 31, 2011 compared to the same period in 2010
primarily as a result of new leases at our properties during the twelve months ended March 31, 2011 due to strong demand for datacenter space, including leases of completed redevelopment space, the largest of which was for space in 43915 Devin
Shafron Drive, 365 South Randolphville Road and 1232 Alma Road. Rental revenue included amounts earned from leases with tel(x) and SoftLayer, both related parties, of approximately $11.1 million and $5.1 million for the three months ended
March 31, 2011 and 2010, respectively. Same store tenant reimbursement revenues increased for the three months ended March 31, 2011 as compared to the same period in 2010 primarily as a result of new leasing and higher utility and
operating expenses being billed to our tenants, the largest occurrences of which were at 43915 Devin Shafron Drive, 3 Corporate Place, 120 East Van Buren and 1500 Space Park Drive.

For the three months ended March 31, 2011, 2121 South Price Road, 365 Main Street, 720 2ndStreet, 2260 East El Segundo and 128 First Avenue contributed $34.6
million, or approximately 77%, of the new properties increase in total revenues compared to the same period in 2010.

Operating Expenses and Interest Expense

Operating expenses and interest expense during the three months ended March 31, 2011 and 2010 were as follows (in thousands):



|                                          |  |                              |         |  |      |   |         |        |  |   |        |  
|----------------------------------------- |  | ---------------------------- | ------- |  | ---- | - | ------- | ------ |  | - | ------ | -
|                                          |  | Three Months Ended March 31, |        
|                                          |  | 2011                         |         |  | 2010 |   |         | Change | 
|Rental property operating and maintenance |  | $                            | 71,723  |  |      | $ | 52,595  |        |  | $ | 19,128 |  
|Property taxes                            |  |                              | 13,471  |  |      |   | 12,721  |        |  |   | 750    |  
|Insurance                                 |  |                              | 2,051   |  |      |   | 1,735   |        |  |   | 316    |  
|Construction management                   |  |                              | 1,737   |  |      |   | 647     |        |  |   | 1,090  |  
|Depreciation and amortization             |  |                              | 73,918  |  |      |   | 57,532  |        |  |   | 16,386 |  
|General and administrative                |  |                              | 12,405  |  |      |   | 10,519  |        |  |   | 1,886  |  
|Transactions                              |  |                              | 681     |  |      |   | 833     |        |  |   | (152   | )
|Other                                     |  |                              | 90      |  |      |   | 2       |        |  |   | 88     |  
|                                          |  |                              |         |  |      |   |         |        |  |   |        |  
|Total operating expenses                  |  | $                            | 176,076 |  |      | $ | 136,584 |        |  | $ | 39,492 |  
|                                          |  |                              |         |  |      |   |         |        |  |   |        |  
|Interest expense                          |  | $                            | 36,082  |  |      | $ | 30,902  |        |  | $ | 5,180  |  
|                                          |  |                              |         |  |      |   |         |        |  |   |        |  



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As shown in the same store and new properties table below, total expenses for the three months ended
March 31, 2011 increased compared to the same period in 2010 primarily as a result of higher same store utility and maintenance costs as well as increased depreciation and interest expense from additional redevelopment projects placed into
service and from recently acquired properties.

The following table shows expenses for new properties (properties that were acquired after
December 31, 2009) and same store properties (all other properties) (in thousands):



|                                          |  |                              |         |  |                              |   |         |        |  |   |       |   |  |      |        |  |        |   |        |  |  |   |        |  
|----------------------------------------- |  | ---------------------------- | ------- |  | ---------------------------- | - | ------- | ------ |  | - | ----- | - |  | ---- | ------ |  | ------ | - | ------ |  |  | - | ------ | -
|                                          |  | Same Store                   |         |  | New Properties               |  
|                                          |  | Three Months Ended March 31, |         |  | Three Months Ended March 31, |  
|                                          |  | 2011                         |         |  | 2010                         |   |         | Change |  |   | 2011  |   |  | 2010 |        |  | Change |  
|Rental property operating and maintenance |  | $                            | 51,523  |  |                              | $ | 48,145  |        |  | $ | 3,378 |   |  | $    | 20,200 |  |        | $ | 4,450  |  |  | $ | 15,750 |  
|Property taxes                            |  |                              | 10,978  |  |                              |   | 11,464  |        |  |   | (486  | ) |  |      | 2,493  |  |        |   | 1,257  |  |  |   | 1,236  |  
|Insurance                                 |  |                              | 1,542   |  |                              |   | 1,662   |        |  |   | (120  | ) |  |      | 509    |  |        |   | 73     |  |  |   | 436    |  
|Construction management                   |  |                              |        |  |                              |   |        |        |  |   |      |   |  |      | 1,737  |  |        |   | 647    |  |  |   | 1,090  |  
|Depreciation and amortization             |  |                              | 58,668  |  |                              |   | 54,349  |        |  |   | 4,319 |   |  |      | 15,250 |  |        |   | 3,183  |  |  |   | 12,067 |  
|General and administrative(1)             |  |                              | 12,405  |  |                              |   | 10,519  |        |  |   | 1,886 |   |  |      |       |  |        |   |       |  |  |   |       |  
|Transactions                              |  |                              |        |  |                              |   |        |        |  |   |      |   |  |      | 681    |  |        |   | 833    |  |  |   | (152   | )
|Other                                     |  |                              | 90      |  |                              |   | 2       |        |  |   | 88    |   |  |      |       |  |        |   |       |  |  |   |       |  
|                                          |  |                              |         |  |                              |   |         |        |  |   |       |   |  |      |        |  |        |   |        |  |  |   |        |  
|Total operating expenses                  |  | $                            | 135,206 |  |                              | $ | 126,141 |        |  | $ | 9,065 |   |  | $    | 40,870 |  |        | $ | 10,443 |  |  | $ | 30,427 |  
|                                          |  |                              |         |  |                              |   |         |        |  |   |       |   |  |      |        |  |        |   |        |  |  |   |        |  
|Interest expense                          |  | $                            | 35,913  |  |                              | $ | 30,902  |        |  | $ | 5,011 |   |  | $    | 169    |  |        | $ |       |  |  | $ | 169    |  
|                                          |  |                              |         |  |                              |   |         |        |  |   |       |   |  |      |        |  |        |   |        |  |  |   |        |  



|(1) | General and administrative expenses are included in same store as they are not allocable to specific properties.
|--- | ----------------------------------------------------------------------------------------------------------------

Same store rental property operating and maintenance expenses increased in the three months ended March 31, 2011 compared to the same period in 2010
primarily as a result of higher utility rates in several of our properties along with redevelopment projects being placed into service leading to higher utility expense in 2011. We capitalized amounts relating to compensation expense of employees
directly engaged in construction and leasing activities of $6.2 million and $4.2 million for the three months ended March 31, 2011 and 2010, respectively.

Same store depreciation and amortization expense increased in the three months ended March 31, 2011 compared to the same period in 2010, principally because of depreciation of redevelopment projects
that were placed into service in the final nine months of 2010 and during 2011.

General and administrative expenses for the three months
ended March 31, 2011 increased compared to the same period in 2010 primarily due to the growth of our company, which resulted in more employees, additional incentive compensation, and higher professional fees and marketing expenses.

Transactions expense decreased in the three months ended March 31, 2011 compared to the same period in 2010, principally because of higher expenses
related to the acquisition of the New England Portfolio in 2010.

Same store interest expense increased for the three months ended
March 31, 2011 as compared to the same period in 2010 primarily as a result of higher average outstanding debt balances during 2011 compared to 2010 primarily due to the issuance of our 5.875% Notes due 2020, the issuance of our 4.50% Notes due
2015, the issuance of our 5.250% Notes due 2021 and draws on our Prudential shelf facility. During the three months ended March 31, 2011 and 2010, we capitalized interest of approximately $4.7 million and $1.9 million, respectively.

New properties increases were caused by properties acquired during the period from January 1, 2010 to March 31, 2011. For
the three months ended March 31, 2011, 365 Main Street, 2121 South Price Road, 720 2ndStreet and 2260 East El Segundo contributed $20.5 million, or approximately 68%, of the new properties increase in total operating expenses compared to the same period in 2010.

Liquidity and Capital Resources of the Parent Company

In this Liquidity and Capital Resources of the Parent Company section and in the Liquidity and Capital Resources of the Operating Partnership section below, the term, our
parent company, refers to Digital Realty Trust, Inc. on an unconsolidated basis, excluding our operating partnership.



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Analysis of Liquidity and Capital Resources

Our parent companys business is operated primarily through our operating partnership of which our parent company is the sole general partner and
which it consolidates for financial reporting purposes. Because our parent company operates on a consolidated basis with our operating partnership, the section entitled Liquidity and Capital Resources of the Operating Partnership should
be read in conjunction with this section to understand the liquidity and capital resources of our parent company on a consolidated basis and how our company is operated as a whole.

Our parent company issues public equity from time to time, but does not otherwise generate any capital itself or conduct any business itself, other than incurring certain expenses in operating as a public
company which are fully reimbursed by the operating partnership. Our parent company itself does not hold any indebtedness other than guarantees of indebtedness of our operating partnership, and its only material asset is its ownership of partnership
interests of our operating partnership. Therefore, the consolidated assets and liabilities and the consolidated revenues and expenses of our parent company and our operating partnership are the same on their respective financial statements, except
for immaterial differences related to cash, other assets and accrued liabilities that arise from public company expenses paid by our parent company. However, all debt is held directly or indirectly at the operating partnership level. Our parent
companys principal funding requirement is the payment of dividends on its common and preferred shares. Our parent companys principal source of funding for its dividend payments is distributions it receives from our operating partnership.

As the sole general partner of our operating partnership, our parent company has the full, exclusive and complete responsibility for our
operating partnerships day-to-day management and control. Our parent company causes our operating partnership to distribute such portion of its available cash as our parent company may in its discretion determine, in the manner provided in our
operating partnerships partnership agreement. Our parent company receives proceeds from its equity issuances from time to time, but is required by our operating partnerships partnership agreement to contribute the proceeds from its
equity issuances to our operating partnership in exchange for partnership units of our operating partnership.

Our parent company is a
well-known seasoned issuer with an effective shelf registration statement filed on May 1, 2009, as amended by Post-Effective Amendment No. 1 filed on November 15, 2010, that allows our parent company to register unspecified various
classes of equity securities. As circumstances warrant, our parent company may issue equity from time to time on an opportunistic basis, dependent upon market conditions and available pricing. Any proceeds from such equity issuances would be
contributed to our operating partnership in exchange for additional equity interests in our operating partnership. Our operating partnership may use the proceeds to acquire additional properties, to fund development and redevelopment opportunities
and for general working capital purposes, including potentially for the repurchase, redemption or retirement of outstanding debt or preferred securities.

The liquidity of our parent company is dependent on our operating partnerships ability to make sufficient distributions to our parent company. The primary cash requirement of our parent company is
its payment of dividends to its stockholders. Our parent company also guarantees some of our operating partnerships unsecured debt. If our operating partnership fails to fulfill its debt requirements, which trigger parent company guarantee
obligations, then our parent company will be required to fulfill its cash payment commitments under such guarantees. However, our parent companys only asset is its investment in our operating partnership.

We believe our operating partnerships sources of working capital, specifically its cash flow from operations, and borrowings available under its
unsecured revolving credit facility, are adequate for it to make its distribution payments to our parent company and, in turn, for our parent company to make its dividend payments to its stockholders. However, we cannot assure you that our operating
partnerships sources of capital will continue to be available at all or in amounts sufficient to meet its needs, including its ability to make distribution payments to our parent company. The unavailability of capital could adversely affect
our operating partnerships ability to pay its distributions to our parent company, which would in turn, adversely affect our parent companys ability to pay cash dividends to its stockholders.



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On December 31, 2009, our parent company entered into equity distribution agreements, which we refer to
as the Original Equity Distribution Agreements, with each of Citigroup Global Markets Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated and Credit Suisse Securities (USA) LLC, or the Original Agents, under which it could issue and
sell shares of its common stock having an aggregate offering price of up to $400,000,000 from time to time through, at its discretion, any of the Original Agents as its sales agents. On January 22, 2010, our parent company amended and restated
each Original Equity Distribution Agreement with the applicable Original Agent, and also entered into a new equity distribution agreement with Morgan Stanley & Co. Incorporated, or collectively the Equity Distribution Agreements, under
which it may issue and sell shares of its common stock having an aggregate offering price of up to $400,000,000 (including the approximately 1.1 million shares of common stock having an aggregate offering price of approximately $54.3 million
sold pursuant to the Original Equity Distribution Agreements as of January 22, 2010), from time to time through, at its discretion, any of the Original Agents or Morgan Stanley & Co. Incorporated as its sales agents. On March 2,
2011, the Equity Distribution Agreements were amended to amend certain representations. The sales of common stock made under the Equity Distribution Agreements will be made in at the market offerings as defined in Rule 415 of the
Securities Act of 1933, as amended. Our parent company has used and intends to use the proceeds from the sale of shares pursuant to the Equity Distribution Agreements to temporarily repay borrowings under our operating partnerships revolving
credit facility, to acquire additional properties, to fund development and redevelopment opportunities and for general corporate purposes, including potentially the repayment or repurchase of outstanding debt. For the three months ended
March 31, 2011, our parent company generated net proceeds of approximately $5.6 million from the issuance of approximately 0.1 million common shares under the Equity Distribution Agreements at an average price of $58.44 per share after
payment of approximately $0.1 million of commissions to the sales agents. The proceeds from the issuances were contributed to our operating partnership in exchange for the issuance of approximately 0.1 million common units to our parent
company. For the three months ended March 31, 2010, our parent company generated net proceeds of approximately $54.8 million from the issuance of approximately 1.1 million common shares under the Equity Distribution Agreements at an
average price of $50.56 per share after payment of approximately $0.8 million of commissions to the sales agents. The proceeds from the issuances were contributed to our operating partnership in exchange for the issuance of approximately
1.1 million common units to our parent company.

During the three months ended March 31, 2011, we exchanged approximately
$35.9 million aggregate principal amount of our 2026 Debentures for a combination of cash (approximately $47.6 million) and 303,073 restricted shares of Digital Realty Trust, Inc. common stock at the request of holders pursuant to the terms of
the indenture governing our 2026 Debentures. There were no exchanges of our 2026 Debentures during the three months ended March 31, 2010.

Future Uses of Cash

Our parent company may from time to time seek to retire, redeem or
repurchase its preferred equity or the debt securities of our operating partnership through cash purchases and/or exchanges for equity securities in open market purchases, privately negotiated transactions or otherwise. Such repurchases, redemptions
or exchanges, if any, will depend on prevailing market conditions, our liquidity requirements, contractual restrictions or other factors. The amounts involved may be material.

We are also subject to the commitments discussed below under Dividends and Distributions.

Dividends and Distributions

Our parent company is required to distribute 90% of its
taxable income (excluding capital gains) on an annual basis in order for it to continue to qualify as a REIT for federal income tax purposes. Accordingly, our parent company intends to make, but is not contractually bound to make, regular quarterly
distributions to its preferred stockholders and common stockholders from cash flow from our operating partnerships operating activities. All such distributions are at the discretion of our parent companys board of directors. Our parent
company considers market factors and our operating partnerships performance in addition to REIT requirements in determining distribution levels. Our parent company has distributed 100% of its taxable income since inception to minimize
corporate level federal income taxes. Amounts accumulated for distribution to stockholders are invested primarily in interest-bearing accounts and short-term interest-bearing securities, which are consistent with our intention to maintain our parent
companys status as a REIT. The exchange rate on the 2026 Debentures, the exchange rate on the 2029 Debentures, the conversion rate on our parent companys series C cumulative convertible preferred stock and the conversion rate on our
parent companys series D cumulative convertible preferred stock are each subject to adjustment for certain events, including, but not limited to, certain dividends on our parent companys common stock in excess of $0.265 per share per
quarter, $0.33 per share per quarter, $0.28625 per share per quarter and $0.31 per share per quarter, respectively. Therefore, the declaration and payment of quarterly dividends by our parent company in excess of these thresholds may increase the
dilutive impact of our operating partnerships exchangeable debentures and our parent companys convertible preferred stock on our parent companys common stockholders.

While historically our parent company has satisfied this distribution requirement by making cash distributions to its stockholders, it may choose to satisfy this requirement by making distributions of
cash or other property, including, in limited circumstances, our parent companys own shares. As a result of this distribution requirement, our operating partnership cannot rely on retained earnings to fund its on-going operations to the same
extent that other companies whose parent companies are not REITs can. Our parent company may need to continue to raise capital in the equity markets to fund our operating partnerships working capital



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needs, as well as potential developments at new or existing properties, acquisitions or investments in existing or newly created joint ventures. In addition, our parent company may be required to
use borrowings under our operating partnerships revolving credit facility, if necessary, to meet REIT distribution requirements and maintain our parent companys REIT status.

During the three months ended March 31, 2011, our parent company declared the following dividends (in thousands):



|                       |  |                       |                |  |                            |   |       |                            |  |   |                   |  |  |   |        | 
|---------------------- |  | --------------------- | -------------- |  | -------------------------- | - | ----- | -------------------------- |  | - | ----------------- |  |  | - | ------ | 
|Date dividend declared |  | Dividend payable date |                |  | Series CPreferredStock
(1) |   |       | Series DPreferredStock
(2) |  |   | Common Stock 
(3) | 
|February 10, 2011      |  |                       | March 31, 2011 |  |                            | $ | 1,832 |                            |  | $ | 4,690             |  |  | $ | 62,459 | 
|                       |  |                       |                |  |                            |   |       |                            |  |   |                   |  |  |   |        | 
|                       |  |                       |                |  |                            | $ | 1,832 |                            |  | $ | 4,690             |  |  | $ | 62,459 | 
|                       |  |                       |                |  |                            |   |       |                            |  |   |                   |  |  |   |        | 



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|(1) | $1.094 annual rate of dividend per share.
|--- | -----------------------------------------

|(2) | $1.375 annual rate of dividend per share.
|--- | -----------------------------------------

|(3) | $2.720 annual rate of dividend per share.
|--- | -----------------------------------------

Distributions out of our current or accumulated earnings and profits are generally classified as ordinary income whereas distributions in excess of our
current and accumulated earnings and profits, to the extent of a stockholders U.S. federal income tax basis in our parent companys stock, are generally classified as a return of capital. Distributions in excess of a stockholders
U.S. federal income tax basis in our parent companys stock are generally characterized as capital gain. Cash provided by operating activities has been sufficient to fund all distributions.

Liquidity and Capital Resources of the Operating Partnership

In this Liquidity and Capital Resources of the Operating Partnership section, the terms we, our and us refer to our operating partnership together with its
consolidated subsidiaries or our operating partnership and our parent company together with their consolidated subsidiaries, as the text requires.

Analysis of Liquidity and Capital Resources

Our parent company is our sole general partner
and consolidates our results of operations for financial reporting purposes. Because we operate on a consolidated basis with our parent company, the section entitled Liquidity and Capital Resources of the Parent Company should be read in
conjunction with this section to understand our liquidity and capital resources on a consolidated basis.

As of March 31, 2011, we had
$44.4 million of cash and cash equivalents, excluding $59.8 million of restricted cash. Restricted cash primarily consists of interest-bearing cash deposits required by the terms of several of our mortgage loans for a variety of purposes, including
real estate taxes, insurance, anticipated or contractually obligated tenant improvements, as well as capital expenditures.

Our short-term
liquidity requirements primarily consist of operating expenses, redevelopment costs and other expenditures associated with our properties, distributions to our parent company in order for it to make dividend payments on its preferred stock,
distributions to our parent company in order for it to make dividend payments to its stockholders required to maintain its REIT status, distributions to the unitholders in our operating partnership, capital expenditures, debt service on our loans
and, potentially, acquisitions. We expect to meet our short-term liquidity requirements through net cash provided by operations, restricted cash accounts established for certain future payments and by drawing upon our revolving credit facility.

As of March 31, 2011, our revolving credit facility had a total capacity of $750.0 million. Effective August 31, 2010, we exercised
the first of two one-year extension options to our revolving credit facility, which extended its maturity date from August 31, 2010 to August 31, 2011. The bank group is obligated to grant extension options provided we give proper notice,
we make certain representations and warranties and no default exists under the revolving credit facility. On June 28, 2010, we completed an amendment to our revolving credit facility. The amendment to the revolving credit facility provides us
with the ability to add eligible unencumbered international assets to the borrowing base in support of our outstanding unsecured debt. International assets include properties located in Canada, England, Ireland, Wales, France, Spain, the
Netherlands, Singapore and Australia. Under the new amendment, international assets may comprise up to 25% of the borrowing base, with assets in Spain and Singapore limited to up to 10% of the borrowing base. As of March 31, 2011, borrowings
under the revolving credit facility bore interest at a blended rate of 1.35% (U.S), 2.01% (Euro) and 1.72% (GBP), which are based on 1-month LIBOR, 1-month EURIBOR and 1-month GBP LIBOR, respectively, plus a margin of 1.10%. The revolving credit
facility has a $515.0 million sub-facility for multicurrency advances in British Pounds Sterling, Canadian Dollars, Euros, and Swiss Francs. We intend to use available borrowings under the revolving credit facility to, among other things,
finance the acquisition of additional properties, fund tenant improvements and capital expenditures, fund development and redevelopment activities and to provide for working capital and other corporate purposes. As of March 31, 2011,
approximately $209.7 million was drawn under this facility and $29.9 million of letters of credit were issued, leaving approximately $510.0 million available for use.

For a discussion of the potential impact of current global economic and market conditions on our liquidity and capital resources, see Factors Which May Influence Future Results of
OperationsGlobal market and economic conditions above.

On January 22, 2010, our parent company entered into the Equity
Distribution Agreements discussed under Liquidity and Capital Resources of the Parent Company above. For the three months ended March 31, 2011, our parent company generated net proceeds of approximately $5.6 million from the
issuance of approximately 0.1 million common shares under the Equity Distribution Agreements at an average price of $58.44 per share after payment of approximately $0.1 million of commissions to the sales agents. The proceeds from the issuances
were contributed to us in exchange for the issuance of approximately 0.1 million common units to our parent



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company. For the three months ended March 31, 2010, our parent company generated net proceeds of approximately $54.8 million from the issuance of approximately 1.1 million common shares
under the Equity Distribution Agreements at an average price of $50.56 per share after payment of approximately $0.8 million of commissions to the sales agents. The proceeds from the issuances were contributed to us in exchange for the issuance of
approximately 1.1 million common units to our parent company.

On March 8, 2011, we closed the issuance of $400.0 million aggregate
principal amount of the 2021 Notes. The purchase price paid by the initial purchasers was 99.775% of the principal amount thereof. The notes are our general unsecured senior obligations, rank equally in right of payment with all our other senior
unsecured indebtedness and are fully and unconditionally guaranteed by our parent company. Interest on the notes is payable on March 15 and September 15 of each year, beginning on September 15, 2011. The net proceeds from the offering
after deducting the original issue discount, underwriting commissions and estimated expenses was approximately $395.5 million. We used the net proceeds from the offering to temporarily repay borrowings under our revolving credit facility, to acquire
additional properties, to fund development and redevelopment opportunities and for general working capital purposes, including potentially for the repurchase, redemption or retirement of outstanding debt securities.

During the three months ended March 31, 2011, we exchanged approximately $35.9 million aggregate principal amount of our 2026 Debentures for a
combination of cash (approximately $47.6 million) and 303,073 restricted shares of Digital Realty Trust, Inc. common stock at the request of holders pursuant to the terms of the indenture governing our 2026 Debentures. There were no exchanges of our
2026 Debentures during the three months ended March 31, 2010.

Construction

As of March 31, 2011 and December 31, 2010, work in progress, including the proportionate land and property costs related to current
construction projects, amounted to $282.9 million, or $362.0 million including construction accruals and certain capitalized costs, and $202.0 million, or $274.8 million including construction accruals and certain capitalized costs, respectively.
Separately, our redevelopment program included the proportionate land and building costs related to other targeted projects in the amount of $89.8 million and $184.0 million as of March 31, 2011 and December 31, 2010, respectively. Work in
progress related to non-redevelopment projects, primarily tenant and building improvements, amounted to $1.8 million and $2.0 million as of March 31, 2011 and December 31, 2010, respectively.



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Future Uses of Cash

Our properties require periodic investments of capital for tenant-related capital expenditures and for general capital improvements.
As of March 31, 2011, we had approximately 2.2 million square feet of redevelopment space and we also owned approximately 232,000 net rentable square feet of datacenter space with extensive installed tenant improvements that we may
subdivide for Turn-Key Datacenter® use during the next two years rather than lease to large single tenants.
Turn-Key Datacenter® space is move-in-ready space for the placement of computer and network equipment required
to provide a datacenter environment. Depending on demand for additional Turn-Key Datacenter® space, we expect to
incur significant tenant improvement costs to build out and redevelop these types of spaces. At March 31, 2011, approximately 346,000 square feet of our space held for redevelopment was under construction for Turn-Key Datacenter®, Powered Base Building® and build-to-suit space in seven U.S. markets and two European markets. At March 31, 2011, we had commitments under construction contracts for approximately
$102.2 million. We currently expect to incur approximately $325.0 million to $400.0 million of capital expenditures for our redevelopment program during the nine months ended December 31, 2011, although this amount may increase or
decrease, potentially materially, based on numerous factors, including changes in demand, leasing results and availability of debt or equity capital.

We are also subject to the commitments discussed below under Commitments and Contingencies, Off-Balance Sheet Arrangements and Distributions as described below.

Consistent with our growth strategy, we actively pursue opportunities for potential acquisitions, with due diligence and negotiations often
at different stages at different times. The dollar value of additional acquisitions for the remainder of the year ending December 31, 2011 will be based on numerous factors, including tenant demand, leasing results, availability of debt or
equity capital and acquisition opportunities.

We may from time to time seek to retire or repurchase our outstanding debt or the preferred
equity of our parent company through cash purchases and/or exchanges for equity securities of our parent company in open market purchases, privately negotiated transactions or otherwise. Such repurchases or exchanges, if any, will depend on
prevailing market conditions, our liquidity requirements, contractual restrictions or other factors. The amounts involved may be material.

We
expect to meet our short-and long-term liquidity requirements, including to pay for scheduled debt maturities and to fund property acquisitions and non-recurring capital improvements with net cash from operations, future long-term secured and
unsecured indebtedness and the issuance of equity and debt securities and the proceeds of equity issuances by our parent company. We also may fund future short-and long-term liquidity requirements, including property acquisitions and non-recurring
capital improvements using our revolving credit facility pending permanent financing. If we are not able to obtain additional financing on terms attractive to us, or at all, including as a result of the circumstances described above under
Factors Which May Influence Future Results of OperationsGlobal market and economic conditions, we may be required to reduce our acquisition or capital expenditure plans, which could have a material adverse effect upon our business
and results of operations.

Distributions

All distributions on our units are at the discretion of our parent companys board of directors. During the three months ended March 31, 2011, our operating partnership declared the following
distributions (in thousands):



|                           |  |                          |                |  |                            |   |       |                            |  |   |                   |  |  |   |        | 
|-------------------------- |  | ------------------------ | -------------- |  | -------------------------- | - | ----- | -------------------------- |  | - | ----------------- |  |  | - | ------ | 
|Date distribution declared |  | Distributionpayable date |                |  | Series CPreferredUnits
(1) |   |       | Series DPreferredUnits
(2) |  |   | Common Units 
(3) | 
|February 10, 2011          |  |                          | March 31, 2011 |  |                            | $ | 1,832 |                            |  | $ | 4,690             |  |  | $ | 66,252 | 
|                           |  |                          |                |  |                            |   |       |                            |  |   |                   |  |  |   |        | 
|                           |  |                          |                |  |                            | $ | 1,832 |                            |  | $ | 4,690             |  |  | $ | 66,252 | 
|                           |  |                          |                |  |                            |   |       |                            |  |   |                   |  |  |   |        | 



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|(1) | $1.094 annual rate of distribution per unit.
|--- | --------------------------------------------

|(2) | $1.375 annual rate of distribution per unit.
|--- | --------------------------------------------

|(3) | $2.720 annual rate of distribution per unit.
|--- | --------------------------------------------

Commitments and Contingencies

We have agreed with the seller of 350 East Cermak Road to
share a portion, not to exceed $135,000 per month, of rental revenue, adjusted for our costs to lease the premises, from the leases of the 192,000 square feet of space held for redevelopment at this property. This revenue sharing agreement will
terminate in May 2012. We made payments of approximately $0.4 million and $10,000 to the seller during the three months ended March 31, 2011 and 2010, respectively. We have recorded approximately $1.9 million and $2.3 million for this
contingent liability on our consolidated balance sheet at March 31, 2011 and December 31, 2010, respectively.

As part of the
acquisition of Clonshaugh Industrial Estate I, we entered into an agreement with the seller whereby the seller is entitled to receive 40% of the net rental income generated by the existing building after we have received a 9% return on all capital
invested in the property. As of February 6, 2006, the date we acquired this property, we have estimated the present value of these expected payments over the 10 year lease term to be approximately $1.1 million and this value has been recorded
as a component of the purchase price. Accounts payable and other liabilities include $1.4 million and $1.3 million for this liability as of March 31, 2011 and December 31, 2010, respectively. There were no payments made to the seller
during the three months ended March 31, 2011 and 2010.

As part of the acquisition of 29A International Business Park, the seller could
earn additional consideration based on future net operating income growth in excess of certain performance targets, as defined. As of March 31, 2011, construction is not complete and there have been no leases executed that would cause an amount
to become probable of payment and therefore no amount is accrued as of March 31, 2011. The maximum amount that could be earned by the seller is S$50.0 million (or approximately $39.7 million based on the exchange rate as of March 31,
2011). The earnout contingency expires in November 2020.

As of March 31, 2011, we were a party to interest rate cap and swap agreements
which hedge variability in cash flows related to LIBOR, GBP LIBOR and EURIBOR based mortgage loans. Under these swaps, we pay variable-rate amounts in exchange for fixed-rate payments over the life of the agreements without exchange of the
underlying principal amounts. See Item 3 Quantitative and Qualitative Disclosures about Market Risk.

Outstanding Consolidated Indebtedness

The table below summarizes our debt, as of March 31, 2011 (in millions):



|                                                               |  |   |         |  
|-------------------------------------------------------------- |  | - | ------- | -
|Debt Summary:                                                  |  |   |         |  
|Fixed rate                                                     |  | $ | 2,561.5 |  
|Variable rate debt subject to interest rate swaps and caps     |  |   | 284.2   |  
|                                                               |  |   |         |  
|Total fixed rate debt (including interest rate swaps and caps) |  |   | 2,845.7 |  
|Variable rateunhedged                                         |  |   | 209.7   |  
|                                                               |  |   |         |  
|Total                                                          |  | $ | 3,055.4 |  
|                                                               |  |   |         |  
|Percent of Total Debt:                                         |  |   |         |  
|Fixed rate (including swapped debt)                            |  |   | 93.1    | %
|Variable rate                                                  |  |   | 6.9     | %
|                                                               |  |   |         |  
|Total                                                          |  |   | 100.0   | %
|                                                               |  |   |         |  
|Effective Interest Rate as of March 31, 2011(1):               |  |   |         |  
|Fixed rate (including hedged variable rate debt)               |  |   | 5.61    | %
|Variable rate                                                  |  |   | 1.42    | %
|Effective interest rate                                        |  |   | 5.32    | %



|(1) | Excludes impact of deferred financing cost amortization.
|--- | --------------------------------------------------------



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As of March 31, 2011, we had approximately $3.1 billion of outstanding consolidated long-term debt as
set forth in the table above. Our ratio of debt to total enterprise value was approximately 33% (based on the closing price of our parent companys common stock on March 31, 2011 of $58.14). For this purpose, our total enterprise value is
defined as the sum of the market value of our parent companys outstanding common stock (which may decrease, thereby increasing our debt to total enterprise value ratio), excluding options issued under our incentive award plan, plus the
liquidation value of our parent companys preferred stock, plus the aggregate value of our operating partnership units not held by our parent company (with the per unit value equal to the market value of one share of our parent companys
common stock and excluding long-term incentive units and Class C Units), plus the book value of our total consolidated indebtedness.

The
variable rate debt shown above bears interest at interest rates based on various LIBOR, GBP LIBOR and EURIBOR rates ranging from one to twelve months, depending on the respective agreement governing the debt. Assuming maturity of the 2026 Debentures
and the 2029 Debentures at their first redemption dates in August 2011 and April 2014, respectively, as of March 31, 2011, our debt had a weighted average term to initial maturity of approximately 5.0 years (approximately 5.2 years assuming
exercise of extension options).

Off-Balance Sheet Arrangements

As of March 31, 2011, we were party to interest rate swap and cap agreements related to $284.2 million of outstanding principal on our variable rate
debt. See Item 3 Quantitative and Qualitative Disclosures about Market Risk.

The 2026 Debentures provide for excess exchange
value to be paid in cash and/or shares of Digital Realty Trust, Inc. common stock if the stock price exceeds a certain amount. If such debentures were exchanged in full on March 31, 2011, we would owe approximately $52.9 million to the holders
of such debentures, payable in cash equal to the principal balance plus $45.0 million, equal to the excess exchange value, payable in cash and/or shares of Digital Realty Trust, Inc. common stock. See note 6 to our condensed consolidated financial
statements for a further description of our 2026 Debentures.

Cash Flows

The following summary discussion of our cash flows is based on the consolidated statements of cash flows and is not meant to be an all-inclusive
discussion of the changes in our cash flows for the periods presented below.

Comparison of Three Months Ended
March 31, 2011 to Three Months Ended March 31, 2010

The following table shows cash flows and ending cash and cash equivalent
balances for the three months ended March 31, 2011 and 2010, respectively (in thousands):



|                                                     |  |                              |          |   |      |   |          |        |  |   |          |  
|---------------------------------------------------- |  | ---------------------------- | -------- | - | ---- | - | -------- | ------ |  | - | -------- | -
|                                                     |  | Three Months Ended March 31, |         
|                                                     |  | 2011                         |          |   | 2010 |   |          | Change | 
|Net cash provided by operating activities            |  | $                            | 64,489   |   |      | $ | 57,200   |        |  | $ | 7,289    |  
|Net cash used in investing activities                |  |                              | (137,557 | ) |      |   | (442,755 | )      |  |   | 305,198  |  
|Net cash provided by financing activities            |  |                              | 105,717  |   |      |   | 364,044  |        |  |   | (258,327 | )
|                                                     |  |                              |          |   |      |   |          |        |  |   |          |  
|Net increase (decrease) in cash and cash equivalents |  | $                            | 32,649   |   |      | $ | (21,511  | )      |  | $ | 54,160   |  
|                                                     |  |                              |          |   |      |   |          |        |  |   |          |  

The increase in net cash provided by operating activities was due to increased cash flows from new leasing at our same store
properties, completed and leased redevelopment space and our acquisition of new operating properties which was partially offset by increased operating and interest expenses. Net cash used in investing activities decreased for the three months ended
March 31, 2011, as we had a decrease in cash paid for acquisitions for the three months ended March 31, 2011 ($0) as compared to in the same period in 2010 ($375.0 million) partially offset by an increase in cash paid for capital
expenditures for the three months ended March 31, 2011 ($135.1 million) as compared to the same period in 2010 ($66.9 million).



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Cash flows from financing activities for the company consisted of the following amounts (in thousands):



|                                                                                |  |                              |          |   |      |   |         |        |  |   |          |  
|------------------------------------------------------------------------------- |  | ---------------------------- | -------- | - | ---- | - | ------- | ------ |  | - | -------- | -
|                                                                                |  | Three Months Ended March 31, |         
|                                                                                |  | 2011                         |          |   | 2010 |   |         | Change | 
|Proceeds from borrowings, net of repayments                                     |  | $                            | (126,296 | ) |      | $ | (91,802 | )      |  | $ | (34,494  | )
|Net proceeds from issuance of common stock, including exercise of stock options |  |                              | 6,463    |   |      |   | 56,519  |        |  |   | (50,056  | )
|Net proceeds from 2020 Notes                                                    |  |                              |         |   |      |   | 486,536 |        |  |   | (486,536 | )
|Net proceeds from 2021 Notes                                                    |  |                              | 396,500  |   |      |   |        |        |  |   | 396,500  |  
|Principal payments on 2026 Debentures                                           |  |                              | (35,850  | ) |      |   |        |        |  |   | (35,850  | )
|Dividend and distribution payments                                              |  |                              | (123,984 | ) |      |   | (87,248 | )      |  |   | (36,736  | )
|Other                                                                           |  |                              | (11,116  | ) |      |   | 39      |        |  |   | (11,155  | )
|                                                                                |  |                              |          |   |      |   |         |        |  |   |          |  
|Net cash provided by financing activities                                       |  | $                            | 105,717  |   |      | $ | 364,044 |        |  | $ | (258,327 | )
|                                                                                |  |                              |          |   |      |   |         |        |  |   |          |  

The decrease in net cash provided by financing activities was primarily due to the issuance of our 2021 Notes (net proceeds
of $396.5 million) during the three months ended March 31, 2011 as compared to the issuance of our 2020 Notes (net proceeds of $486.5 million) and common stock (net proceeds of $56.5 million) during the three months ended March 31,
2010. The increase in dividend and distribution payments for the three months ended March 31, 2011 as compared to the same period in 2010 was a result of an increase in shares outstanding and dividend amount per share in 2011 as compared to
2010.

Cash flows from financing activities for the operating partnership consisted of the following amounts (in thousands).



|                                            |  |                              |          |   |      |   |         |        |  |   |          |  
|------------------------------------------- |  | ---------------------------- | -------- | - | ---- | - | ------- | ------ |  | - | -------- | -
|                                            |  | Three Months Ended March 31, |         
|                                            |  | 2011                         |          |   | 2010 |   |         | Change | 
|Proceeds from borrowings, net of repayments |  | $                            | (126,296 | ) |      | $ | (91,802 | )      |  | $ | (34,494  | )
|General partner contributions, net          |  |                              | 6,463    |   |      |   | 56,519  |        |  |   | (50,056  | )
|Net proceeds from 2020 Notes                |  |                              |         |   |      |   | 486,536 |        |  |   | (486,536 | )
|Net proceeds from 2021 Notes                |  |                              | 396,500  |   |      |   |        |        |  |   | 396,500  |  
|Principal payments on 2026 Debentures       |  |                              | (35,850  | ) |      |   |        |        |  |   | (35,850  | )
|Distribution payments                       |  |                              | (123,984 | ) |      |   | (87,248 | )      |  |   | (36,736  | )
|Other                                       |  |                              | (11,116  | ) |      |   | 39      |        |  |   | (11,155  | )
|                                            |  |                              |          |   |      |   |         |        |  |   |          |  
|Net cash provided by financing activities   |  | $                            | 105,717  |   |      | $ | 364,044 |        |  | $ | (258,327 | )
|                                            |  |                              |          |   |      |   |         |        |  |   |          |  

The decrease in net cash provided by financing activities was primarily due to the issuance of the 2021 Notes (net proceeds
of $396.5 million) during the three months ended March 31, 2011 as compared to the issuance of the 2020 Notes (net proceeds of $486.5 million) during the three months ended March 31, 2010. General partner contributions were primarily related to the
issuance of our operating partnerships units to the company in connection with the companys common stock offerings related to the Equity Distribution Agreements. The increase in distribution payments for the three months ended
March 31, 2011 as compared to the same period in 2010 was a result of an increase in units outstanding and distribution amount per unit in 2011 as compared to 2010.

Noncontrolling Interests in Operating Partnership

Noncontrolling interests relate
to the common units in our operating partnership that are not owned by Digital Realty Trust, Inc., which, as of March 31, 2011, amounted to 5.6% of our operating partnership common units. In conjunction with our formation, GI Partners received
common units, in exchange for contributing ownership interests in properties to our operating partnership. Also, our operating partnership issued common units to third party sellers in connection with our acquisition of real estate interests from
such third parties.

Limited partners who acquired common units in connection with our formation have the right to require our operating
partnership to redeem part or all of their common units for cash based upon the fair market value of an equivalent number of shares of Digital Realty Trust, Inc. common stock at the time of the redemption. Alternatively, we may elect to acquire
those common units in exchange for shares of Digital Realty Trust, Inc. common stock on a one-for-one basis, subject to adjustment in the event of stock splits, stock dividends, issuance of stock rights, specified extraordinary distributions and
similar events. Pursuant to registration rights agreements we entered into with GI Partners and the other third party contributors, we filed a shelf registration statement covering the issuance of the shares of our common stock issuable upon
redemption of the common units, and the resale of those shares of common stock by the holders. As of March 31, 2007, GI Partners no longer had an ownership interest in our operating partnership.

Inflation

Many
of our leases provide for separate real estate tax and operating expense escalations. In addition, many of the leases provide for fixed base rent increases. We believe that inflationary increases may be at least partially offset by the contractual
rent increases and expense escalations described above. See Factors Which May Influence Future Results of OperationsOperating Expenses for further discussion.



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|ITEM 3. | QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.
|------- | -----------------------------------------------------------

Our future income, cash flows and fair values relevant to financial instruments depend upon prevalent market interest rates. Market risk refers to the risk of loss from adverse changes in market prices
and interest rates. We do not use derivatives for trading or speculative purposes and only enter into contracts with major financial institutions based on their credit rating and other factors.

Analysis of Debt between Fixed and Variable Rate.

We use interest rate swap and cap agreements and fixed rate debt to reduce our exposure to interest rate movements. As of March 31, 2011, our consolidated debt was as follows (in millions):



|                                                               |  |                |         |  |                     |   |         | 
|-------------------------------------------------------------- |  | -------------- | ------- |  | ------------------- | - | ------- | 
|                                                               |  | Carrying Value |         |  | Estimated FairValue |  
|Fixed rate debt                                                |  | $              | 2,561.5 |  |                     | $ | 2,812.4 | 
|Variable rate debt subject to interest rate swaps and caps     |  |                | 284.2   |  |                     |   | 285.1   | 
|                                                               |  |                |         |  |                     |   |         | 
|Total fixed rate debt (including interest rate swaps and caps) |  |                | 2,845.7 |  |                     |   | 3,097.5 | 
|Variable rate debt                                             |  |                | 209.7   |  |                     |   | 209.7   | 
|                                                               |  |                |         |  |                     |   |         | 
|Total outstanding debt                                         |  | $              | 3,055.4 |  |                     | $ | 3,307.2 | 
|                                                               |  |                |         |  |                     |   |         | 

Interest rate swaps included in this table and their fair values as of March 31, 2011 and December 31, 2010 were
as follows (in thousands):



|                   |         |     |                       |   |            |                   |  |            |  |  |                |  |                                                            |               |  |                    |               |  |                       |   |        |   |  |   |        |  
|------------------ | ------- | --- | --------------------- | - | ---------- | ----------------- |  | ---------- |  |  | -------------- |  | ---------------------------------------------------------- | ------------- |  | ------------------ | ------------- |  | --------------------- | - | ------ | - |  | - | ------ | -
|Notional Amount    |         |     |                       |   |            |                   |  |            |  |  |                |  | Fair Value at Significant OtherObservable Inputs (Level 2) |              
|As ofMarch 31,2011 |         |     | As ofDecember 31,2010 |   |            | Type ofDerivative |  | StrikeRate |  |  | Effective Date |  | Expiration Date                                            |               |  | As ofMarch 31,2011 |               |  | As ofDecember 31,2010 |  
|$                  | 19,875  | (1) |                       | $ | 19,515 (1) |                   |  | Swap       |  |  | 4.944          |  |                                                            | Jul. 10, 2006 |  |                    | Apr. 10, 2011 |  |                       | $ | (23    | ) |  | $ | (231   | )
|                   | 68,640  | (1) |                       |   | 66,858 (1) |                   |  | Swap       |  |  | 2.980          |  |                                                            | April 6, 2009 |  |                    | Nov. 30, 2013 |  |                       |   | (1,810 | ) |  |   | (2,471 | )
|                   | 14,727  | (2) |                       |   | 13,978 (2) |                   |  | Swap       |  |  | 3.981          |  |                                                            | May 17, 2006  |  |                    | Jul. 18, 2013 |  |                       |   | (561   | ) |  |   | (828   | )
|                   | 10,655  | (2) |                       |   | 10,113 (2) |                   |  | Swap       |  |  | 4.070          |  |                                                            | Jun. 23, 2006 |  |                    | Jul. 18, 2013 |  |                       |   | (427   | ) |  |   | (621   | )
|                   | 9,377   | (2) |                       |   | 8,900 (2)  |                   |  | Swap       |  |  | 3.989          |  |                                                            | Jul. 27, 2006 |  |                    | Oct. 18, 2013 |  |                       |   | (378   | ) |  |   | (557   | )
|                   | 43,652  | (2) |                       |   | 41,430 (2) |                   |  | Swap       |  |  | 3.776          |  |                                                            | Dec. 5, 2006  |  |                    | Jan. 18, 2012 |  |                       |   | (761   | ) |  |   | (1,129 | )
|                   | 37,530  | (2) |                       |   | 35,620 (2) |                   |  | Swap       |  |  | 4.000          |  |                                                            | Dec. 20, 2006 |  |                    | Jan. 18, 2012 |  |                       |   | (722   | ) |  |   | (1,054 | )
|                   | 42,474  | (2) |                       |   | 40,152 (2) |                   |  | Swap       |  |  | 2.703          |  |                                                            | Dec. 3, 2009  |  |                    | Sep. 4, 2014  |  |                       |   | (225   | ) |  |   | (1,139 | )
|                   | 16,778  |     |                       |   | 16,976     |                   |  | Cap        |  |  | 4.000          |  |                                                            | June 24, 2009 |  |                    | June 25, 2012 |  |                       |   | 1      |   |  |   | 3      |  
|                   | 20,500  |     |                       |   | 20,500     |                   |  | Cap        |  |  | 4.000          |  |                                                            | Aug. 4, 2010  |  |                    | June 15, 2013 |  |                       |   | 25     |   |  |   | 30     |  
|                   |         |     |                       |   |            |                   |  |            |  |  |                |  |                                                            |               |  |                    |               |  |                       |   |        |   |  |   |        |  
|$                  | 284,208 |     |                       | $ | 274,042    |                   |  |            |  |  |                |  |                                                            |               |  |                    |               |  |                       | $ | (4,881 | ) |  | $ | (7,997 | )
|                   |         |     |                       |   |            |                   |  |            |  |  |                |  |                                                            |               |  |                    |               |  |                       |   |        |   |  |   |        |  



|(1) | Translation to U.S. dollars is based on exchange rate of $1.60 to £1.00 as of March 31, 2011 and $1.56 to £1.00 as of December 31, 2010.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------

|(2) | Translation to U.S. dollars is based on exchange rate of $1.42 to 1.00 as of March 31, 2011 and $1.34 to 1.00 as of December 31, 2010.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------



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##### Table of Contents

Sensitivity to Changes in Interest Rates.

The following table shows the effect if assumed changes in interest rates occurred:



|                                                                                                                                                               |  |                                    |     |   |                     |   |       |  
|-------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------- | --- | - | ------------------- | - | ----- | -
|Assumed event                                                                                                                                                  |  | Interest rate change(basis points) |     |   | Change ($ millions) |  
|Increase in fair value of interest rate swaps and caps following an assumed 10% increase in interest rates                                                     |  |                                    | 24  |   |                     | $ | 1.1   |  
|Decrease in fair value of interest rate swaps and caps following an assumed 10% decrease in interest rates                                                     |  |                                    | (24 | ) |                     |   | (1.1  | )
|Increase in annual interest expense on our debt that is variable rate and not subject to swapped or capped interest following a
10% increase in interest rates |  |                                    | 24  |   |                     |   | 0.5   |  
|Decrease in annual interest expense on our debt that is variable rate and not subject to swapped or capped interest following a
10% decrease in interest rates |  |                                    | (24 | ) |                     |   | (0.5  | )
|Increase in fair value of fixed rate debt following a 10% decrease in interest rates                                                                           |  |                                    | (24 | ) |                     |   | 28.6  |  
|Decrease in fair value of fixed rate debt following a 10% increase in interest rates                                                                           |  |                                    | 24  |   |                     |   | (26.6 | )
|                                                                                                                                                               |  |                                    |     |   |                     |   |       |  

Interest risk amounts were determined by considering the impact of hypothetical interest rates on our financial instruments.
These analyses do not consider the effect of any change in overall economic activity that could occur in that environment. Further, in the event of a change of that magnitude, we may take actions to further mitigate our exposure to the change.
However, due to the uncertainty of the specific actions that would be taken and their possible effects, these analyses assume no changes in our financial structure.

Foreign Currency Exchange Risk

For the three months ended March 31, 2011 and
2010, we had foreign operations in the United Kingdom, Ireland, France, The Netherlands, Switzerland, Singapore and Canada and, as such, are subject to risk from the effects of exchange rate movements of foreign currencies, which may affect future
costs and cash flows. Our foreign operations are conducted in the British Pound, Euro, Swiss Franc and the Singapore Dollar, except for our Canadian property for which the functional currency is the U.S. dollar. Our primary currency exposures are to
the Euro and the British Pound. We attempt to mitigate a portion of the risk of currency fluctuation by financing our properties in the local currency denominations, although there can be no assurance that this will be effective. As a result,
changes in the relation of any such foreign currency to U.S. dollars may affect our revenues, operating margins and distributions and may also affect the book value of our assets and the amount of stockholders equity. For the three months
ended March 31, 2011 and 2010, operating revenues from properties outside the United States contributed $25.7 million and $23.2 million, respectively, which represented 10.2% and 12.1% of our operating revenues, respectively.



70



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##### Table of Contents

|ITEM 4. | CONTROLS AND PROCEDURES.
|------- | ------------------------

Evaluation of Disclosure Controls and Procedures (Digital Realty Trust, Inc.)

The company maintains disclosure controls and procedures that are designed to ensure that information required to be disclosed in its reports filed under
the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized and reported within the time periods specified in the U.S. Securities and Exchange Commissions rules and forms, and that such information is accumulated
and communicated to its management, including its chief executive officer and chief financial officer, as appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, the
companys management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and its management is required to apply its judgment
in evaluating the cost-benefit relationship of possible controls and procedures. Also, the company has investments in certain unconsolidated entities, which are accounted for using the equity method of accounting. As the company does not control or
manage these entities, its disclosure controls and procedures with respect to such entities may be substantially more limited than those it maintains with respect to its consolidated subsidiaries.

As required by Rule 13a-15(b) or Rule 15d-15(b) of the Securities Exchange Act of 1934, as amended, management of the company carried out an
evaluation, under the supervision and with participation of its chief executive officer and chief financial officer, of the effectiveness of the design and operation of its disclosure controls and procedures that were in effect as of the end of the
quarter covered by this report. Based on the foregoing, the companys chief executive officer and chief financial officer each concluded that its disclosure controls and procedures were effective at the reasonable assurance level.

There have been no changes in the companys internal control over financial reporting during its most recent fiscal quarter that have materially
affected, or are reasonably likely to materially affect, its internal control over financial reporting.

Evaluation of Disclosure Controls and Procedures (Digital Realty Trust, L.P.)

The operating partnership maintains disclosure
controls and procedures that are designed to ensure that information required to be disclosed in its reports filed under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized and reported within the time periods
specified in the U.S. Securities and Exchange Commissions rules and forms, and that such information is accumulated and communicated to its management, including the chief executive officer and chief financial officer of its general
partner, as appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, the operating partnerships management recognizes that any controls and procedures, no matter
how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and its management is required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.
Also, the operating partnership has investments in certain unconsolidated entities, which are accounted for using the equity method of accounting. As the operating partnership does not control or manage these entities, its disclosure controls and
procedures with respect to such entities may be substantially more limited than those it maintains with respect to its consolidated subsidiaries.

As required by Rule 13a-15(b) or Rule 15d-15(b) of the Securities Exchange Act of 1934, as amended, management of the operating partnership carried out an evaluation, under the supervision and
with participation of the chief executive officer and chief financial officer of its general partner, of the effectiveness of the design and operation of its disclosure controls and procedures that were in effect as of the end of the quarter covered
by this report. Based on the foregoing, the chief executive officer and chief financial officer of the operating partnerships general partner each concluded that its disclosure controls and procedures were effective at the reasonable assurance
level.

There have been no changes in the operating partnerships internal control over financial reporting during its most recent fiscal
quarter that have materially affected, or are reasonably likely to materially affect, its internal control over financial reporting.



71



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##### Table of Contents

PART IIOTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS.

None.

ITEM 1A. RISK FACTORS.

The risk factors discussed under the heading Risk Factors and elsewhere in the companys and the operating partnerships Annual
Report on Form 10-K for the year ended December 
31, 2010, and any amendments thereto, continue to apply to our business.

ITEM 2. UNREGISTERED SALES OF
EQUITY SECURITIES AND USE OF PROCEEDS.

Digital Realty Trust, Inc.

During the three months ended March 31, 2011, Digital Realty Trust, Inc. issued 303,073 restricted shares of its common stock and paid approximately $47.6
million in cash to holders of our operating partnerships 2026 Debentures in exchange for $35,850,000 in aggregate principal amount of our operating partnerships 2026 Debentures at the request of holders pursuant to the terms of the
indenture governing the 2026 Debentures.

The shares were issued in transactions exempt from registration pursuant to Section 4(2) of the
Securities Act of 1933, as amended, and Rule 506 of Regulation D promulgated thereunder. The issuance of the shares did not involve a public offering and was made without general solicitation or advertising. Each holder represented that, among other
things, it is a qualified institutional buyer within the meaning of Rule 144A under the Securities Act of 1933, as amended.

Digital Realty Trust, L.P.

During the three months ended March 31, 2011,
Digital Realty Trust, Inc. contributed an aggregate of 303,073 restricted shares of its common stock to our operating partnership, and our operating partnership delivered the shares and approximately $47.6 million in cash in exchange for $35,850,000
in aggregate principal amount of its 2026 Debentures at the request of holders pursuant to the terms of the indenture governing the 2026 Debentures. Digital Realty Trust, Inc. contributed the shares to our operating partnership in exchange for an
aggregate of 303,073 common units.

For the issuance of common units to Digital Realty Trust, Inc., our operating partnership relied on
Digital Realty Trust, Inc.s status as a publicly traded NYSE-listed company with over $5 billion in total consolidated assets and as our operating partnerships majority owner and general partner as the basis for the exemption under
Section 4(2) of the Securities Act.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES.

None.

ITEM 4. (REMOVED AND RESERVED).

ITEM 5. OTHER INFORMATION.

None.



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##### Table of Contents

ITEM 6. EXHIBITS.



|               |  |                                                                                                                                                                                                                                                                                                                                                                                                  
|-------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibit Number |  | Description                                                                                                                                                                                                                                                                                                                                                                                      
|               | 
|1.1            |  | Amendment No. 1 to Amended and Restated Equity Distribution Agreement, dated March 2, 2011, among Digital Realty Trust, Inc., Digital Realty Trust, L.P. and Citigroup Global Markets
Inc.                                                                                                                                                                                                       
|               | 
|1.2            |  | Amendment No. 1 to Amended and Restated Equity Distribution Agreement, dated March 2, 2011, among Digital Realty Trust, Inc., Digital Realty Trust, L.P. and Merrill Lynch, Pierce,
Fenner & Smith Incorporated.                                                                                                                                                                                 
|               | 
|1.3            |  | Amendment No. 1 to Amended and Restated Equity Distribution Agreement, dated March 2, 2011, among Digital Realty Trust, Inc., Digital Realty Trust, L.P. and Credit Suisse Securities
(USA) LLC.                                                                                                                                                                                                 
|               | 
|1.4            |  | Amendment No. 1 to Equity Distribution Agreement, dated March 2, 2011, among Digital Realty Trust, Inc., Digital Realty Trust, L.P. and Morgan Stanley & Co.
Incorporated.                                                                                                                                                                                                                       
|               | 
|3.1            |  | Articles of Amendment and Restatement of Digital Realty Trust, Inc., as amended (incorporated by reference to Exhibit 3.1 to Digital Realty Trust, Inc.s Annual Report on
Form 10-K filed on February 26, 2010).                                                                                                                                                                                
|               | 
|3.2            |  | Second Amended and Restated Bylaws of Digital Realty Trust, Inc. (incorporated by reference to Exhibit 3.1 to Digital Realty Trust, Inc.s Current Report on Form 8-K filed on
March 19, 2009).                                                                                                                                                                                                  
|               | 
|3.3            |  | Certificate of Limited Partnership of Digital Realty Trust, L.P. (incorporated by reference to Exhibit 3.1 to Digital Realty Trust, L.P.s General Form for Registration of
Securities on Form 10 (File No. 000-54023) filed on June 25, 2010).                                                                                                                                                  
|               | 
|3.4            |  | Eighth Amended and Restated Agreement of Limited Partnership of Digital Realty Trust, L.P. (incorporated by reference to Exhibit 10.1 to Digital Realty Trust, Inc.s Current
Report on Form 8-K filed on April 13, 2009).                                                                                                                                                                       
|               | 
|4.1            |  | Indenture, dated as of March 8, 2011, among Digital Realty Trust, L.P., as issuer, Digital Realty Trust, Inc., as guarantor, and Deutsche Bank Trust Company Americas, as trustee
(incorporated by reference to Exhibit 4.1 to Digital Realty Trust, Inc.s Current Report on Form 8-K filed on March 8, 2011).                                                                                  
|               | 
|4.2            |  | Supplemental Indenture No. 1, dated as of March 8, 2011, among Digital Realty Trust, L.P., as issuer, Digital Realty Trust, Inc., as guarantor, and Deutsche Bank Trust Company
Americas, as trustee, including the form of 5.250% Notes due 2021 and the guarantee (incorporated by reference to Exhibit 4.2 to Digital Realty Trust, Inc.s Current Report on Form 8-K filed on March 8, 2011).
|               | 
|10.1          |  | Employment Agreement, dated July 30, 2004, among Digital Realty Trust, Inc., Digital Realty Trust, L.P. and David J. Caron.                                                                                                                                                                                                                                                                      
|               | 
|10.2          |  | First Amendment to Employment Agreement, dated December 4, 2008, among Digital Realty Trust, Inc., Digital Realty Trust, L.P. and David J. Caron.                                                                                                                                                                                                                                                
|               | 
|12.1           |  | Statement of Computation of Ratios.                                                                                                                                                                                                                                                                                                                                                              
|               | 
|31.1           |  | Rule 13a-14(a)/15d-14(a) Certifications of Chief Executive Officer for Digital Realty Trust, Inc.                                                                                                                                                                                                                                                                                                



73



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|               |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|-------------- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibit Number |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|               | 
|31.2           |  | Rule 13a-14(a)/15d-14(a) Certifications of Chief Financial Officer for Digital Realty Trust, Inc.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|               | 
|31.3           |  | Rule 13a-14(a)/15d-14(a) Certifications of Chief Executive Officer for Digital Realty Trust, L.P.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|               | 
|31.4           |  | Rule 13a-14(a)/15d-14(a) Certifications of Chief Financial Officer for Digital Realty Trust, L.P.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|               | 
|32.1           |  | 18 U.S.C. § 1350 Certifications of Chief Executive Officer for Digital Realty Trust, Inc.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|               | 
|32.2           |  | 18 U.S.C. § 1350 Certifications of Chief Financial Officer for Digital Realty Trust, Inc.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|               | 
|32.3           |  | 18 U.S.C. § 1350 Certifications of Chief Executive Officer for Digital Realty Trust, L.P.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|               | 
|32.4           |  | 18 U.S.C. § 1350 Certifications of Chief Financial Officer for Digital Realty Trust, L.P.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|               | 
|101**          |  | The following financial statements from Digital Realty Trust, Inc.s and Digital Realty Trust, L.P.s Form 10-Q for the quarter ended March 31, 2011, formatted in XBRL
interactive data files: (i) Condensed Consolidated Balance Sheets as of March 31, 2011 and December 31, 2010; (ii) Condensed Consolidated Income Statements for the three months ended March 31, 2011 and 2010; (iii) Condensed Consolidated
Statement of Equity/Statement of Capital for the three months ended March 31, 2011; (iv) Condensed Consolidated Statements of Comprehensive Income for the three months ended March 31, 2011 and 2010; (v) Condensed Consolidated Statements of Cash
Flows for the three months ended March 31, 2011 and 2010; and (vi) Notes to Condensed Consolidated Financial Statements.



| | Management contract or compensatory plan or arrangement.
|- | --------------------------------------------------------

|** | Pursuant to Rule 406T of Regulation S-T, these interactive data files are deemed not filed or part of a registration statement or prospectus for purposes of Sections 11
or 12 of the Securities Act of 1933, as amended, are deemed not filed for purposes of Section 18 of the Exchange Act of 1934, as amended, and otherwise are not subject to liability under these sections.
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



74



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##### Table of Contents

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.



|            |  |  |  |                                                                                                    
|----------- |  |  |  | ---------------------------------------------------------------------------------------------------
|            |  |  |  | DIGITAL REALTY TRUST, INC.                                                                         
|            |  | 
|May 9, 2011 |  |  |  | /S/    MICHAEL F.
FOUST                                                                            
|            |  |  |  | Michael F. Foust Chief Executive Officer (principal executive
officer)                             
|            |  | 
|May 9, 2011 |  |  |  | /S/    A. WILLIAM
STEIN                                                                            
|            |  |  |  | A. William Stein Chief Financial Officer and Chief Investment Officer (principal financial
officer)
|            |  | 
|May 9, 2011 |  |  |  | /S/    EDWARD F.
SHAM                                                                              
|            |  |  |  | Edward F. Sham Sr. Vice President and Controller (principal accounting
officer)                    

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.



|            |  |  |  |                                                                                                     |  |                                               
|----------- |  |  |  | --------------------------------------------------------------------------------------------------- |  | ----------------------------------------------
|            |  |  |  | DIGITAL REALTY TRUST, L.P.                                                                         
|            |  |  | 
|            |  |  |  | By:                                                                                                 |  | Digital Realty Trust, Inc.
Its general partner
|            |  |  | 
|            |  |  |  | By:                                                                                                 |  |                                               
|            |  | 
|May 9, 2011 |  |  |  | /S/    MICHAEL F.
FOUST                                                                            
|            |  |  |  | Michael F. Foust
Chief Executive Officer (principal executive officer)                             
|            |  | 
|May 9, 2011 |  |  |  | /S/    A. WILLIAM
STEIN                                                                            
|            |  |  |  | A. William Stein
Chief Financial Officer and Chief Investment Officer (principal financial officer)
|            |  | 
|May 9, 2011 |  |  |  | /S/    EDWARD F.
SHAM                                                                              
|            |  |  |  | Edward F. Sham
Sr. Vice President and Controller (principal accounting officer)                    



75



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##### Table of Contents

Exhibit Index



|               |  |                                                                                                                                                                                                                                                                                                                                                                                                  
|-------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibit Number |  | Description                                                                                                                                                                                                                                                                                                                                                                                      
|1.1            |  | Amendment No. 1 to Amended and Restated Equity Distribution Agreement, dated March 2, 2011, among Digital Realty Trust, Inc., Digital Realty Trust, L.P. and Citigroup Global Markets
Inc.                                                                                                                                                                                                       
|               | 
|1.2            |  | Amendment No. 1 to Amended and Restated Equity Distribution Agreement, dated March 2, 2011, among Digital Realty Trust, Inc., Digital Realty Trust, L.P. and Merrill Lynch, Pierce,
Fenner & Smith Incorporated.                                                                                                                                                                                 
|               | 
|1.3            |  | Amendment No. 1 to Amended and Restated Equity Distribution Agreement, dated March 2, 2011, among Digital Realty Trust, Inc., Digital Realty Trust, L.P. and Credit Suisse Securities
(USA) LLC.                                                                                                                                                                                                 
|               | 
|1.4            |  | Amendment No. 1 to Equity Distribution Agreement, dated March 2, 2011, among Digital Realty Trust, Inc., Digital Realty Trust, L.P. and Morgan Stanley & Co.
Incorporated.                                                                                                                                                                                                                       
|               | 
|3.1            |  | Articles of Amendment and Restatement of Digital Realty Trust, Inc., as amended (incorporated by reference to Exhibit 3.1 to Digital Realty Trust, Inc.s Annual Report on
Form 10-K filed on February 26, 2010).                                                                                                                                                                                
|               | 
|3.2            |  | Second Amended and Restated Bylaws of Digital Realty Trust, Inc. (incorporated by reference to Exhibit 3.1 to Digital Realty Trust, Inc.s Current Report on Form 8-K filed on
March 19, 2009).                                                                                                                                                                                                  
|               | 
|3.3            |  | Certificate of Limited Partnership of Digital Realty Trust, L.P. (incorporated by reference to Exhibit 3.1 to Digital Realty Trust, L.P.s General Form for Registration of
Securities on Form 10 (File No. 000-54023) filed on June 25, 2010).                                                                                                                                                  
|               | 
|3.4            |  | Eighth Amended and Restated Agreement of Limited Partnership of Digital Realty Trust, L.P. (incorporated by reference to Exhibit 10.1 to Digital Realty Trust, Inc.s Current
Report on Form 8-K filed on April 13, 2009).                                                                                                                                                                       
|               | 
|4.1            |  | Indenture, dated as of March 8, 2011, among Digital Realty Trust, L.P., as issuer, Digital Realty Trust, Inc., as guarantor, and Deutsche Bank Trust Company Americas, as trustee
(incorporated by reference to Exhibit 4.1 to Digital Realty Trust, Inc.s Current Report on Form 8-K filed on March 8, 2011).                                                                                  
|               | 
|4.2            |  | Supplemental Indenture No. 1, dated as of March 8, 2011, among Digital Realty Trust, L.P., as issuer, Digital Realty Trust, Inc., as guarantor, and Deutsche Bank Trust Company
Americas, as trustee, including the form of 5.250% Notes due 2021 and the guarantee (incorporated by reference to Exhibit 4.2 to Digital Realty Trust, Inc.s Current Report on Form 8-K filed on March 8, 2011).
|               | 
|10.1          |  | Employment Agreement, dated July 30, 2004, among Digital Realty Trust, Inc., Digital Realty Trust, L.P. and David J. Caron.                                                                                                                                                                                                                                                                      
|               | 
|10.2          |  | First Amendment to Employment Agreement, dated December 4, 2008, among Digital Realty Trust, Inc., Digital Realty Trust, L.P. and David J. Caron.                                                                                                                                                                                                                                                
|               | 
|12.1           |  | Statement of Computation of Ratios.                                                                                                                                                                                                                                                                                                                                                              
|               | 
|31.1           |  | Rule 13a-14(a)/15d-14(a) Certifications of Chief Executive Officer for Digital Realty Trust,
Inc.                                                                                                                                                                                                                                                                                                



76



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|               |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|-------------- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibit Number |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|               | 
|31.2           |  | Rule 13a-14(a)/15d-14(a) Certifications of Chief Financial Officer for Digital Realty Trust, Inc.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|               | 
|31.3           |  | Rule 13a-14(a)/15d-14(a) Certifications of Chief Executive Officer for Digital Realty Trust, L.P.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|               | 
|31.4           |  | Rule 13a-14(a)/15d-14(a) Certifications of Chief Financial Officer for Digital Realty Trust, L.P.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|               | 
|32.1           |  | 18 U.S.C. § 1350 Certifications of Chief Executive Officer for Digital Realty Trust, Inc.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
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|32.2           |  | 18 U.S.C. § 1350 Certifications of Chief Financial Officer for Digital Realty Trust, Inc.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|               | 
|32.3           |  | 18 U.S.C. § 1350 Certifications of Chief Executive Officer for Digital Realty Trust, L.P.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|               | 
|32.4           |  | 18 U.S.C. § 1350 Certifications of Chief Financial Officer for Digital Realty Trust, L.P.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|               | 
|101**          |  | The following financial statements from Digital Realty Trust, Inc.s and Digital Realty Trust, L.P.s Form 10-Q for the
quarter ended March 31, 2011, formatted in XBRL interactive data files: (i) Condensed Consolidated Balance Sheets as of March 31, 2011 and December 31, 2010; (ii) Condensed Consolidated Income Statements for the three months ended March 31,
2011 and 2010; (iii) Condensed Consolidated Statement of Equity/Statement of Capital for the three months ended March 31, 2011; (iv) Condensed Consolidated Statements of Comprehensive Income for the three months ended March 31, 2011 and 2010;
(v) Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2011 and 2010; and (vi) Notes to Condensed Consolidated Financial Statements.



| | Management contract or compensatory plan or arrangement.
|- | --------------------------------------------------------

|** | Pursuant to Rule 406T of Regulation S-T, these interactive data files are deemed not filed or part of a registration statement or prospectus for purposes of Sections 11
or 12 of the Securities Act of 1933, as amended, are deemed not filed for purposes of Section 18 of the Exchange Act of 1934, as amended, and otherwise are not subject to liability under these sections.
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