Document:

Exhibit
10.2

  

First
amended and restated

UNCONDITIONAL
GUARANTY OF PAYMENT AND PERFORMANCE

 

FOR AND IN CONSIDERATION OF the sum of
Ten and No/100 Dollars ($10.00) and other good and valuable consideration paid or delivered to the undersigned QTS REALTY TRUST,
INC., a Maryland corporation (“REIT”), the receipt and sufficiency whereof are hereby acknowledged by REIT, and
for the purpose of seeking to induce KEYBANK NATIONAL ASSOCIATION, a national banking association (hereinafter referred
to as “Lender”, which term shall also include each other Lender which may now be or hereafter become a party to the
Credit Agreement, and shall also include any such individual Lender acting as agent for all of the Lenders), to extend credit or
otherwise provide financial accommodations to Borrower under the Credit Agreement, and seeking to induce the Lender Hedge Providers
to provide financial accommodations by entering into derivative contracts that may give rise to Hedge Obligations, which extension
of credit and provision of financial accommodations will be to the direct interest, advantage and benefit of REIT, REIT does, upon
the occurrence of a Springing Recourse Event (as hereinafter defined), hereby, absolutely, unconditionally and irrevocably guarantee
to Lender and the Lender Hedge Providers the complete payment and performance of the following liabilities, obligations and indebtedness
of Borrower to Lender and the Lender Hedge Providers (hereinafter referred to collectively as the “Obligations”) (capitalized
terms that are used herein that are not otherwise defined herein shall have the meanings set forth in the Credit Agreement):

 

(a)          the
full and prompt payment when due, whether by acceleration or otherwise, either before or after maturity thereof, of the Revolving
Credit Notes in the aggregate principal face amount of Five Hundred Fifty Million and No/100 Dollars ($550,000,000.00) made by
Borrower to the order of certain of the Lenders, the Term Loan Notes in the aggregate principal face amount of One Hundred Million
and No/100 Dollars ($100,000,000.00) made by Borrower to the order of certain of the Lenders, which Revolving Credit Notes and
Term Loan Notes are increasable to Eight Hundred Fifty Million and No/100 Dollars ($850,000,000.00) as provided in the Credit Agreement,
and the Swing Loan Note in the principal face amount of Thirty Million and No/100 Dollars ($30,000,000.00) made by Borrower to
the order of the Swing Loan Lender, together with interest as provided in the Revolving Credit Notes, the Term Loan Notes and the
Swing Loan Note, and together with any replacements, supplements, renewals, modifications, consolidations, restatements, increases
and extensions thereof; and

 

(b)          the
full and prompt payment when due, whether by acceleration or otherwise, either before or after maturity thereof, of each other
note as may be issued under that certain Third Amended and Restated Credit Agreement dated as of December 17, 2014 (as amended,
restated, supplemented, or otherwise modified from time to time, the “Credit Agreement”) among Borrower, KeyBank, for
itself and as agent, and the other lenders now or hereafter a party thereto, together with interest as provided in each such note,
together with any replacements, supplements, renewals, modifications, consolidations, restatements, increases, and extensions thereof
(the Revolving Credit Notes, the Term Loan Notes and Swing Loan Notes and each of the notes described in this subparagraph (b)
are hereinafter referred to collectively as the “Note”); and

 

(c)          the
full and prompt payment and performance of any and all obligations of Borrower to Lender under the terms of the Credit Agreement,
together with any replacements, supplements, renewals, modifications, consolidations, restatements, and extensions thereof; and

 

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(d)          [intentionally
omitted]; and

 

(e)          the
full and prompt payment and performance of each and all of the Hedge Obligations; and

 

(f)          the
full and prompt payment and performance of any and all other obligations of Borrower to Lender under any other agreements, documents
or instruments now or hereafter evidencing, securing or otherwise relating to the indebtedness evidenced by the Note or the Credit
Agreement (the Note, the Credit Agreement and said other agreements, documents and instruments are hereinafter collectively referred
to as the “Loan Documents” and individually referred to as a “Loan Document”). Without limiting the generality
of the foregoing, REIT acknowledges the terms of §2.11 of the Credit Agreement pursuant to which the Total Commitment under
the Credit Agreement may be increased to up to Eight Hundred Fifty Million and No/100 Dollars ($850,000,000.00) and agree that
this First Amended and Restated Unconditional Guaranty of Payment and Performance (this “Guaranty”) shall extend and
be applicable to each new or replacement note delivered by Borrower in connection with any such increase of the Total Commitment
and all other obligations of Borrower under the Loan Documents as a result of such increase without notice to or consent from REIT.

 

Notwithstanding anything to the contrary
contained herein, under no circumstances shall any of the “Obligations” guaranteed hereby include any obligation that
constitutes an Excluded Hedge Obligation of REIT.

 

1.          Agreement
to Pay and Perform; Costs of Collection. Upon the occurrence of (a) REIT’s failure to perform any term, covenant or agreement
contained in §7.12 of the Credit Agreement (each, an "Asset Covenant Breach") and the passage of forty-five days
(45) after either (i) Borrower or REIT becomes aware of the Asset Covenant Breach, or (ii) Agent notifies Borrower in writing of
any Asset Covenant Breach, (b) if, at any time, REIT guarantees, or otherwise becomes obligated in respect of, any Indebtedness
(other than a conditional or springing guaranty on terms substantially similar to the Springing Guaranty or Indebtedness permitted
under §8.1(a), (b), (c), (d), (e) or (f) of the Credit Agreement), (c) REIT (i) shall make an assignment for the benefit of
creditors, or admit in writing its general inability to pay or generally fail to pay its debts as they mature or become due, or
shall petition or apply for the appointment of a trustee or other custodian, liquidator or receiver for it or any substantial part
of its assets, (ii) shall commence any case or other proceeding relating to it under any bankruptcy, reorganization, arrangement,
insolvency, readjustment of debt, dissolution or liquidation or similar law of any jurisdiction, now or hereafter in effect, or
(iii) shall take any action to authorize or in furtherance of any of the foregoing, (d) a petition or application shall be filed
for the appointment of a trustee or other custodian, liquidator or receiver of REIT or any substantial part of the REIT's assets,
or a case or other proceeding shall be commenced against REIT under any bankruptcy, reorganization, arrangement, insolvency, readjustment
of debt, dissolution or liquidation or similar law of any jurisdiction, now or hereafter in effect, and REIT shall indicate its
approval thereof, consent thereto or acquiescence therein or such petition, application, case or proceeding shall not have been
dismissed within sixty (60) days following the filing or commencement thereof, (e) a decree or order is entered appointing a trustee,
custodian, liquidator or receiver for REIT or adjudicating REIT, bankrupt or insolvent, or approving a petition in any such case
or other proceeding, or a decree or order for relief is entered in respect of REIT in an involuntary case under federal bankruptcy
laws as now or hereafter constituted (each of 1(a), 1(b), 1(c), 1(d) and 1(e) of this Guaranty being referred to a “Springing
Recourse Event”), then REIT does hereby agree that following and during the continuance of an Event of Default under the
Loan Documents if the Note is not paid by Borrower in accordance with its terms, or if any and all sums which are now or may hereafter
become due from Borrower to Lender under the Loan Documents are not paid by Borrower in accordance with their terms, or if any
and all other obligations of Borrower to Lender under the Note or of Borrower or any other Guarantor under the other Loan
Documents are not performed by Borrower, or any other Guarantor, as applicable, in accordance with their terms, REIT will immediately
upon demand make such payments and perform such obligations. Upon the occurrence of a Springing Recourse Event, REIT further agrees
to pay Lender on demand all reasonable costs and expenses (including court costs and reasonable attorneys’ fees and disbursements)
paid or incurred by Lender in endeavoring to collect the Obligations guaranteed hereby, to enforce any of the Obligations of Borrower
guaranteed hereby, or any portion thereof, or to enforce this Guaranty, and until paid to Lender, such sums shall bear interest
at the Default Rate unless collection from REIT of interest at such rate would be contrary to applicable law, in which event such
sums shall bear interest at the highest rate which may be collected from REIT under applicable law. REIT acknowledges and agrees
that the Obligations guaranteed hereunder shall automatically become fully effective upon a Springing Recourse Event and no other
documentation shall be required to evidence same.

 

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2.          Reinstatement
of Refunded Payments. If, for any reason, any payment to Lender of any of the Obligations guaranteed hereunder is required
to be refunded by Lender to Borrower, or paid or turned over to any other Person, including, without limitation, by reason of the
operation of bankruptcy, reorganization, receivership or insolvency laws or similar laws of general application relating to creditors’
rights and remedies now or hereafter enacted, REIT agrees to pay to the Lender on demand an amount equal to the amount so required
to be refunded, paid or turned over (the “Turnover Payment”), the obligations of REIT shall not be treated as having
been discharged by the original payment to Lender giving rise to the Turnover Payment, and this Guaranty shall be treated as having
remained in full force and effect for any such Turnover Payment so made by Lender, as well as for any amounts not theretofore paid
to Lender on account of such obligations.

 

3.          Actions
with Respect to Obligations. REIT hereby consents and agrees that Lender may at any time, and from time to time, without thereby
releasing REIT from any liability hereunder and without notice to or further consent from REIT or any other Person or entity, either
with or without consideration: release or surrender any lien or other security of any kind or nature whatsoever held by it or by
any Person, firm or corporation on its behalf or for its account, securing any indebtedness or liability hereby guaranteed; substitute
for any collateral so held by it, other collateral of like kind, or of any kind; modify the terms of the Note or the Loan Documents;
extend or renew the Note for any period; grant releases, compromises and indulgences with respect to the Note or the Loan Documents
and to any Persons or entities now or hereafter liable thereunder or hereunder; release any other Guarantor, surety, endorser or
accommodation party of the Note or any other Loan Documents; or take or fail to take any action of any type whatsoever. No such
action which Lender shall take or fail to take in connection with the Note or the Loan Documents, or any of them, or any security
for the payment of the indebtedness of Borrower to Lender or for the performance of any obligations or undertakings of Borrower,
REIT or other Guarantor, nor any course of dealing with Borrower or any other Person, shall release REIT’s obligations hereunder,
affect this Guaranty in any way or afford REIT any recourse against Lender. The provisions of this Guaranty shall extend and be
applicable to all replacements, supplements, renewals, amendments, extensions, consolidations, restatements and modifications of
the Note and the Loan Documents, and any and all references herein to the Note and the Loan Documents shall be deemed to include
any such replacements, supplements, renewals, extensions, amendments, consolidations, restatements or modifications thereof. Without
limiting the generality of the foregoing, REIT acknowledges the terms of §18.3 of the Credit Agreement and agrees that this
Guaranty shall extend and be applicable to each new or replacement note delivered by Borrower pursuant thereto without notice to
or further consent from REIT.

 

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4.          No
Contest with Lender; Subordination. So long as any of the Obligations hereby guaranteed remain unpaid or undischarged or any
Lender has any obligation to make Loans or issue Letters of Credit, REIT will not, by paying any sum recoverable hereunder (whether
or not demanded by Lender) or by any means or on any other ground, claim any set-off or counterclaim against Borrower in respect
of any liability of REIT to Borrower or, in proceedings under federal bankruptcy law or insolvency proceedings of any nature, prove
in competition with Lender in respect of any payment hereunder or be entitled to have the benefit of any counterclaim or proof
of claim or dividend or payment by or on behalf of Borrower or the benefit of any other security for any of the Obligations hereby
guaranteed which, now or hereafter, Lender may hold or in which it may have any share. REIT hereby expressly waives any right of
contribution from or indemnity against Borrower or any other Guarantor, whether at law or in equity, arising from any payments
made by REIT pursuant to the terms of this Guaranty, and REIT acknowledges that REIT has no right whatsoever to proceed against
Borrower or any other Guarantor for reimbursement of any such payments. In connection with the foregoing, REIT expressly waives
any and all rights of subrogation to Lender against Borrower or any other Guarantor, and REIT hereby waives any rights to enforce
any remedy which Lender may have against Borrower or any other Guarantor and any rights to participate in any collateral for Borrower’s
obligations under the Loan Documents. REIT hereby subordinates any and all indebtedness of Borrower now or hereafter owed to REIT
to all indebtedness of Borrower or any other Guarantor to Lender, and agrees with Lender that (a) REIT shall not demand or accept
any payment from Borrower or any other Guarantor on account of such indebtedness, (b) REIT shall not claim any offset or other
reduction of REIT’s obligations hereunder because of any such indebtedness, and (c) REIT shall not take any action to
obtain any interest in any of the security, if any, described in and encumbered by the Loan Documents because of any such indebtedness;
provided, however, that, if Lender so requests, such indebtedness shall be collected, enforced and received by REIT as trustee
for Lender and be paid over to Lender on account of the indebtedness of Borrower to Lender, but without reducing or affecting in
any manner the liability of REIT under the other provisions of this Guaranty except to the extent the principal amount or other
portion of such outstanding indebtedness shall have been reduced by such payment.

 

5.          Waiver
of Defenses. REIT hereby agrees that its obligations hereunder shall not be affected or impaired by, and hereby waives and
agrees not to assert or take advantage of any defense based on:

 

(a)          (i)
any change in the amount, interest rate or due date or other term of any of the obligations hereby guaranteed, (ii) any change
in the time, place or manner of payment of all or any portion of the obligations hereby guaranteed, (iii) any amendment or waiver
of, or consent to the departure from or other indulgence with respect to, the Credit Agreement, any other Loan Document, or any
other document or instrument evidencing or relating to any obligations hereby guaranteed, or (iv) any waiver, renewal, extension,
addition, or supplement to, or deletion from, or any other action or inaction under or in respect of, the Credit Agreement, any
of the other Loan Documents, or any other documents, instruments or agreements relating to the obligations hereby guaranteed or
any other instrument or agreement referred to therein or evidencing any obligations hereby guaranteed or any assignment or transfer
of any of the foregoing;

 

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(b)          any
subordination of the payment of the obligations hereby guaranteed to the payment of any other liability of Borrower, any other
Guarantor or any other Person;

 

(c)          any
act or failure to act by Borrower or any other Person which may adversely affect REIT’s subrogation rights, if any, against
Borrower, any other Guarantor or any other Person to recover payments made under this Guaranty;

 

(d)          nonperfection
or impairment of any security interest or other Lien on any collateral, if any, securing in any way any of the obligations hereby
guaranteed;

 

(e)          any
application of sums paid by Borrower or any other Person with respect to the liabilities of Lender, regardless of what liabilities
of Borrower remains unpaid;

 

(f)          any
defense of Borrower, including without limitation, the invalidity, illegality or unenforceability of any of the Obligations;

 

(g)          either
with or without notice to REIT, any renewal, extension, modification, amendment or other changes in the Obligations, including
but not limited to any material alteration of the terms of payment or performance of the Obligations;

 

(h)          any
statute of limitations in any action hereunder or for the collection of the Note or for the payment or performance of any obligation
hereby guaranteed;

 

(i)          the
incapacity, lack of authority, death or disability of Borrower or any other Person or entity, or the failure of Lender to file
or enforce a claim against the estate (either in administration, bankruptcy or in any other proceeding) of Borrower, REIT, any
other Guarantor or any other Person or entity;

 

(j)          the
dissolution or termination of existence of Borrower, REIT, any other Guarantor or any other Person or entity;

 

(k)          the
voluntary or involuntary liquidation, sale or other disposition of all or substantially all of the assets of Borrower, REIT, any
other Guarantor or any other Person or entity;

 

(l)          the
voluntary or involuntary receivership, insolvency, bankruptcy, assignment for the benefit of creditors, reorganization, assignment,
composition, or readjustment of, or any similar proceeding affecting, Borrower, REIT any other Guarantor or any other Person or
entity, or any of Borrower’s, REIT’s or any other Guarantor’s or any other Person’s or entity’s properties
or assets;

 

(m)          the
damage, destruction, condemnation, foreclosure or surrender of all or any part of the Real Estate or any of the improvements located
thereon;

 

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(n)          the
failure of Lender to give notice of the existence, creation or incurring of any new or additional indebtedness or obligation of
Borrower or of any action or nonaction on the part of any other Person whomsoever in connection with any obligation hereby guaranteed;

 

(o)          any
failure or delay of Lender to commence an action against Borrower or any other Person, to assert or enforce any remedies against
Borrower under the Note or the other Loan Documents, or to realize upon any security;

 

(p)          any
failure of any duty on the part of Lender to disclose to REIT any facts it may now or hereafter know regarding Borrower (including,
without limitation Borrower’s financial condition), any other Guarantor or any other Person, any collateral, or any other
assets or liabilities of such Persons, whether such facts materially increase the risk to REIT or not (it being agreed that REIT
assumes responsibility for being informed with respect to such information);

 

(q)          failure
to accept or give notice of acceptance of this Guaranty by Lender;

 

(r)          failure
to make or give notice of presentment and demand for payment of any of the indebtedness or performance of any of the obligations
hereby guaranteed;

 

(s)          failure
to make or give protest and notice of dishonor or of default to REIT or to any other party with respect to the indebtedness or
performance of obligations hereby guaranteed;

 

(t)          any
and all other notices whatsoever to which REIT might otherwise be entitled;

 

(u)          any
lack of diligence by Lender in collection, protection or realization upon any collateral securing the payment of the indebtedness
or performance of obligations hereby guaranteed;

 

(v)         the
invalidity or unenforceability of the Note, or any of the other Loan Documents, or any assignment or transfer of the foregoing;

 

(w)          the
compromise, settlement, release or termination of any or all of the obligations of Borrower under the Note or the other Loan Documents
or the Hedge Obligations;

 

(x)          any
transfer by Borrower or any other Person of all or any part of the security, if any, encumbered by the Loan Documents;

 

(y)          the
failure of Lender to perfect any security or to extend or renew the perfection of any security; or

 

(z)          to
the fullest extent permitted by law, any other legal, equitable or surety defenses whatsoever to which REIT might otherwise be
entitled, it being the intention that the obligations of REIT hereunder are absolute, unconditional and irrevocable.

 

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REIT understands that the exercise by Lender
of certain rights and remedies may affect or eliminate Guarantor’s right of subrogation against Borrower or the other Guarantors
and that REIT may therefore incur partially or totally nonreimbursable liability hereunder. Nevertheless, REIT hereby authorizes
and empowers Lender, its successors, endorsees and assigns, to exercise in its or their sole discretion, any rights and remedies,
or any combination thereof, which may then be available, it being the purpose and intent of REIT that the obligations hereunder
shall, upon the occurrence of a Springing Recourse Event, be absolute, continuing, independent and unconditional under any and
all circumstances. Notwithstanding any other provision of this Guaranty to the contrary, REIT hereby waives and releases any claim
or other rights which REIT may now have or hereafter acquire against Borrower or any other Guarantor or other Person of all or
any of the obligations of REIT hereunder that arise from the existence or performance of REIT’s obligations under this Guaranty
or any of the other Loan Documents, including, without limitation, any right of subrogation, reimbursement, exoneration, contribution
or indemnification, any right to participate in any claim or remedy of Lender against Borrower or any other Guarantor or other
Person or any collateral which Lender now has or hereafter acquires, whether or not such claim, remedy or right arises in equity
or under contract, statute or common law, by any payment made hereunder or otherwise, including, without limitation, the right
to take or receive from Borrower or any other Guarantor, directly or indirectly, in cash or other property or by setoff or in any
other manner, payment or security on account of such claim or other rights, except for those rights of other Guarantors under the
Contribution Agreement.

 

6.          Guaranty
of Payment and Performance and Not of Collection. This is a guaranty of payment and performance and not of collection. Upon
the occurrence of a Springing Recourse Event, the liability of REIT under this Guaranty shall be primary, direct and immediate
and not conditional or contingent upon the pursuit of any remedies against Borrower or any other Person, nor against securities
or liens available to Lender, its successors, successors in title, endorsees or assigns. REIT hereby waives any right to require
that an action be brought against Borrower or any other Person or to require that resort be had to any security or to any balance
of any deposit account or credit on the books of Lender in favor of Borrower or any other Person.

 

7.          Rights
and Remedies of Lender. In the event of an Event of Default under the Note or the Loan Documents, or any of them, that is continuing
(it being understood that the Lender has no obligation to accept cure after an Event of Default occurs), Lender shall have the
right to enforce its rights, powers and remedies thereunder or hereunder or under any other Loan Document, in any order, and all
rights, powers and remedies available to Lender in such event shall be nonexclusive and cumulative of all other rights, powers
and remedies provided thereunder or hereunder or by law or in equity. Accordingly, REIT hereby authorizes and empowers Lender upon
the occurrence and during the continuance of any Event of Default under the Note or the Loan Documents, at its sole discretion,
and without notice to REIT, to exercise any right or remedy which Lender may have, including, but not limited to, judicial foreclosure,
exercise of rights of power of sale, acceptance of a deed or assignment in lieu of foreclosure, appointment of a receiver to collect
rents and profits, exercise of remedies against personal property, or enforcement of any assignment of leases, as to any security,
whether real, personal or intangible. At any public or private sale of any security or collateral for any of the Obligations guaranteed
hereby, whether by foreclosure or otherwise, Lender may, in its discretion, purchase all or any part of such security or collateral
so sold or offered for sale for its own account and may apply against the amount bid therefor all or any part of the balance due
it pursuant to the terms of the Note or any other Loan Document without prejudice to Lender’s remedies hereunder against
REIT for deficiencies. If the Obligations guaranteed hereby are partially paid by reason of the election of Lender to pursue any
of the remedies available to Lender, or if such Obligations are otherwise partially paid, this Guaranty shall nevertheless remain
in full force and effect, and REIT shall, upon the occurrence of a Springing Recourse Event, remain liable for the entire balance
of the Obligations guaranteed hereby even though any rights which REIT may have against Borrower or any other Person may be destroyed
or diminished by the exercise of any such remedy.

 

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8.          Application
of Payments. REIT hereby authorizes Lender, without notice to REIT, to apply all payments and credits received from Borrower,
REIT, any other Guarantor or any other Person or realized from any security in such manner and in such priority as Lender
in its sole judgment shall see fit to the Obligations.

 

9.          Business
Failure, Bankruptcy or Insolvency. In the event of the business failure of REIT or if there shall be pending any bankruptcy
or insolvency case or proceeding with respect to REIT under federal bankruptcy law or any other applicable law or in connection
with the insolvency of REIT, or if a liquidator, receiver, or trustee shall have been appointed for REIT or REIT’s properties
or assets, Lender may file such proofs of claim and other papers or documents as may be necessary or advisable in order to have
the claims of Lender allowed in any proceedings relative to REIT, or any of REIT’s properties or assets, and, irrespective
of whether the indebtedness or other obligations of Borrower guaranteed hereby shall then be due and payable, by declaration or
otherwise, Lender shall be entitled and empowered to file and prove a claim for the whole amount of any sums or sums owing with
respect to the indebtedness or other obligations of Borrower guaranteed hereby, and to collect and receive any moneys or other
property payable or deliverable on any such claim. REIT covenants and agrees that upon the commencement of a voluntary or involuntary
bankruptcy proceeding by or against Borrower, REIT shall not seek a supplemental stay or otherwise pursuant to 11 U.S.C. §105
or any other provision of the Bankruptcy Code, as amended, or any other debtor relief law (whether statutory, common law, case
law, or otherwise) of any jurisdiction whatsoever, now or hereafter in effect, which may be or become applicable, to stay, interdict,
condition, reduce or inhibit the ability of Lender to enforce any rights of Lender against REIT by virtue of this Guaranty or otherwise.

 

10.         Covenants
of REIT. REIT hereby covenants and agrees with Lender that until all indebtedness guaranteed hereby has been completely repaid
and all obligations and undertakings of Borrower under, by reason of, or pursuant to the Note and the other Loan Documents have
been completely performed and Lender has no further obligation to make Loans, REIT will comply with any and all covenants applicable
to REIT set forth in the Credit Agreement.

 

11.         Rights
of Set-off. In addition to any rights now or hereafter granted under any of the other Loan Documents or applicable law and
not by way of limitation of any such rights, REIT hereby grants to Lender, during the continuance of any Event of Default under
the Note or the Loan Documents, at any time and without notice to REIT, the right to set-off and apply the whole or any portion
or portions of any or all deposits (general or specific, time or demand, provisional or final, regardless of currency, maturity,
or the branch of Lender where the deposits are held) now or hereafter held by Lender and other sums credited by or due from Lender
to REIT or subject to withdrawal by REIT against amounts payable under this Guaranty, whether or not any other person or persons
could also withdraw money therefrom. Any security now or hereafter held by or for REIT and provided by Borrower, or by anyone on
Borrower’s behalf, in respect of liabilities of REIT hereunder shall be held in trust for Lender as security for the liabilities
of REIT hereunder.

 

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12.         Changes
in Writing; No Revocation. This Guaranty may not be changed orally, and no obligation of REIT can be released or waived by
Lender except as provided in §27 of the Credit Agreement. This Guaranty shall be irrevocable by REIT until all indebtedness
guaranteed hereby has been completely repaid and all obligations and undertakings of Borrower and REIT under, by reason of, or
pursuant to the Note and the other Loan Documents have been completely performed and the Lenders have no further obligation to
advance Loans under the Credit Agreement or issue Letters of Credit.

 

13.         Notices.
Each notice, demand, election or request provided for or permitted to be given pursuant to this Guaranty (hereinafter in this §13
referred to as “Notice”), but specifically excluding to the maximum extent permitted by law any notices of the institution
or commencement of foreclosure proceedings, must be in writing and shall be deemed to have been properly given or served by personal
delivery or by sending same by overnight courier or by depositing same in the United States Mail, postpaid and registered or certified,
return receipt requested, or as expressly permitted herein, by facsimile, and addressed as follows:

 

The address of Lender is:

 

KeyBank National Association, as Agent

4910 Tiedeman Road, 3rd Floor

Brooklyn, Ohio 44144

Attn: Real Estate Capital Services

 

With a copy to:

 

KeyBank National Association

127 Public Square

Cleveland, Ohio 44114-1306

Attn: Mr. Timothy Sylvain 

Facsimile No.: (216) 689-5819

 

With a copy to:

 

McKenna Long & Aldridge LLP

303 Peachtree Street, Suite 5300

Atlanta, Georgia 30308

Attn: William F. Timmons, Esq.

 

The address of REIT is:

 

c/o Quality Companies, LLC

12851 Foster Street, Suite 205

Overland Park, Kansas 66213

Attn: CEO/President

Facsimile No. (913) 814-7766

 

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With a copy to:

 

c/o Quality Companies, LLC

12851 Foster Street, Suite 205

Overland Park, Kansas 66213

Attn: Corporate Counsel

Facsimile No. (913) 814-7766

 

With a copy to:

 

Stinson Leonard Street LLP

1201 Walnut Street, Suite 2900

Kansas City, Missouri 64106-2150

Attn: Patrick J. Respeliers

Facsimile No. (816) 412-8174

 

Each Notice shall be effective upon being
personally delivered or upon being sent by overnight courier or upon being deposited in the United States Mail as aforesaid, or
if transmitted by facsimile is permitted, upon being sent and confirmation of receipt. The time period in which a response to such
Notice must be given or any action taken with respect thereto (if any), however, shall commence to run from the date of receipt
if personally delivered or sent by overnight courier, or if so deposited in the United States Mail, the earlier of three (3) Business
Days following such deposit or the date of receipt as disclosed on the return receipt. Rejection or other refusal to accept or
the inability to deliver because of changed address for which no notice was given shall be deemed to be receipt of the Notice sent.
By giving at least fifteen (15) days’ prior Notice thereof, Borrower, REIT or Lenders shall have the right from time to time
and at any time during the term of this Agreement to change their respective addresses and each shall have the right to specify
as its address any other address within the United States of America.

 

14.         Governing
Law. REIT ACKNOWLEDGES AND AGREES THAT THIS GUARANTY AND THE OBLIGATIONS OF REIT HEREUNDER SHALL BE GOVERNED BY AND INTERPRETED
AND DETERMINED IN ACCORDANCE WITH THE LAWS OF THE STATE OF GEORGIA.

 

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15.         CONSENT
TO JURISDICTION; WAIVERS. REIT HEREBY IRREVOCABLY AND UNCONDITIONALLY (A) SUBMITS TO PERSONAL JURISDICTION IN THE STATE OF
GEORGIA OVER ANY SUIT, ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO THIS GUARANTY, AND (B) WAIVES ANY AND ALL PERSONAL RIGHTS
UNDER THE LAWS OF ANY STATE (I) TO THE RIGHT, IF ANY, TO TRIAL BY JURY(LENDER HAVING ALSO WAIVED SUCH RIGHT TO TRIAL BY JURY),
(II) TO OBJECT TO JURISDICTION WITHIN THE STATE OF GEORGIA OR VENUE IN ANY PARTICULAR FORUM WITHIN THE STATE OF GEORGIA, AND (III)
TO THE RIGHT, IF ANY, TO CLAIM OR RECOVER ANY SPECIAL, EXEMPLARY, PUNITIVE OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES OTHER THAN OR
IN ADDITION TO ACTUAL DAMAGES. EACH LENDER IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY AND ALL RIGHTS UNDER THE LAWS OF ANY STATE
TO THE RIGHT, IF ANY, TO TRIAL BY JURY. REIT HEREBY WAIVES ITS RIGHTS TO PERSONAL SERVICE AND AGREES THAT, IN ADDITION TO ANY METHODS
OF SERVICE OF PROCESS PROVIDED FOR UNDER APPLICABLE LAW, ALL SERVICE OF PROCESS IN ANY SUCH SUIT, ACTION OR PROCEEDING MAY BE MADE
BY CERTIFIED OR REGISTERED MAIL, RETURN RECEIPT REQUESTED, DIRECTED TO REIT AT THE ADDRESS SET FORTH IN PARAGRAPH 13 ABOVE, AND
SERVICE SO MADE SHALL BE COMPLETE FIVE (5) DAYS AFTER THE SAME SHALL BE SO MAILED. NOTHING CONTAINED HEREIN, HOWEVER, SHALL PREVENT
LENDER FROM BRINGING ANY SUIT, ACTION OR PROCEEDING OR EXERCISING ANY RIGHTS AGAINST ANY SECURITY, IF ANY, AND AGAINST REIT PERSONALLY,
AND AGAINST ANY PROPERTY OF REIT, WITHIN ANY OTHER STATE. INITIATING SUCH SUIT, ACTION OR PROCEEDING OR TAKING SUCH ACTION IN ANY
STATE SHALL IN NO EVENT CONSTITUTE A WAIVER OF THE AGREEMENT CONTAINED HEREIN THAT THE LAWS OF THE STATE OF GEORGIA SHALL GOVERN
THE RIGHTS AND OBLIGATIONS OF REIT AND LENDER HEREUNDER OR OF THE SUBMISSION HEREIN MADE BY REIT TO PERSONAL JURISDICTION WITHIN
THE STATE OF GEORGIA. REIT HEREBY WAIVES ANY OBJECTION THAT IT MAY NOW OR HEREAFTER HAVE TO THE VENUE OF ANY SUCH SUIT OR ANY SUCH
COURT OR THAT SUCH SUIT IS BROUGHT IN AN INCONVENIENT COURT. REIT CERTIFIES THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY LENDER
HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH LENDER WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING
WAIVERS AND ACKNOWLEDGE THAT LENDER HAS BEEN INDUCED TO ENTER INTO THIS GUARANTY AND THE OTHER LOAN DOCUMENTS TO WHICH THEY ARE
PARTIES BY, AMONG OTHER THINGS, THE WAIVERS AND CERTIFICATIONS CONTAINED IN THIS PARAGRAPH 15. REIT ACKNOWLEDGES THAT IT HAS HAD
AN OPPORTUNITY TO REVIEW THIS PARAGRAPH 15 WITH ITS LEGAL COUNSEL AND THAT REIT AGREES TO THE FOREGOING AS ITS FREE, KNOWING AND
VOLUNTARY ACT.

 

16.         Successors
and Assigns. The provisions of this Guaranty shall be binding upon REIT and its successors, successors in title, legal representatives,
and assigns, and shall inure to the benefit of Lender, its successors, successors in title, legal representatives and assigns and
the holders of the Hedge Obligations. REIT shall not assign or transfer any of its rights or obligations under this Guaranty without
the prior written consent of Lender.

 

17.         Assignment
by Lender. This Guaranty is assignable by Lender in whole or in part in conjunction with any assignment of the Note or portions
thereof, and any assignment hereof or any transfer or assignment of the Note or portions thereof by Lender shall operate to vest
in any such assignee the rights and powers, in whole or in part, as appropriate, herein conferred upon and granted to Lender.

 

18.         Severability.
If any term or provision of this Guaranty shall be determined to be illegal or unenforceable, all other terms and provisions hereof
shall nevertheless remain effective and shall be enforced to the fullest extent permitted by law.

 

19.         Disclosure.
REIT agrees that in addition to disclosures made in accordance with standard banking practices, any Lender may disclose information
obtained by such Lender pursuant to this Guaranty to assignees or participants and potential assignees or participants hereunder
subject to the terms of the Credit Agreement.

 

    	11

    	 

    

  

20.         No
Unwritten Agreements. THIS GUARANTY REPRESENTS THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE
OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

 

21.         Time
of the Essence. Time is of the essence with respect to each and every covenant, agreement and obligation of REIT under this
Guaranty.

 

22.         Ratification.
REIT does hereby restate, reaffirm and ratify each and every warranty and representation regarding REIT or its Subsidiaries set
forth in the Credit Agreement as if the same were more fully set forth herein.

 

23.         Reserved.

 

24.         Fair
Consideration. The REIT represents that the REIT is engaged in common business enterprises related to those of Borrower and
REIT will derive substantial direct or indirect economic benefit from the effectiveness and existence of the Credit Agreement.

 

25.         Counterparts.
This Guaranty and any amendment hereof may be executed in several counterparts and by each party on a separate counterpart, each
of which when so executed and delivered shall be an original, and all of which together shall constitute one instrument. In proving
this Guaranty it shall not be necessary to produce or account for more than one such counterpart signed by the party against whom
enforcement is sought.

 

26.         Condition
of Borrower. Without reliance on any information supplied by the Lender, REIT has independently taken, and will continue to
take, whatever steps it deems necessary to evaluate the financial condition and affairs of Borrower, and the Lender shall not have
any duty to advise REIT of information at any time known to the Lender regarding such financial condition or affairs or any collateral,
if any.

 

27.         Amendment
and Restatement. This Guaranty is given pursuant to the Credit Agreement and is an amendment and restatement of that certain
Unconditional Guaranty of Payment and Performance dated October 15, 2013 from REIT in favor of the Lender.

 

[CONTINUED ON NEXT PAGE]

 

    	12

    	 

    

 

IN WITNESS WHEREOF, REIT has executed this
Guaranty under seal as of this 17th day of December, 2014.

 

	 	REIT:
	 	 
	 	
        QTS REALTY TRUST, INC., a Maryland corporation

        

 

	 	By:	/s/ William H. Schafer
	 	Name:	William H. Schafer
	 	Title:	Chief Financial Officer

 

	 	(SEAL)

 

[Signatures Continued on Next Page]

 

    	13

    	 

    

 

Lender joins in the execution of this Guaranty
for the sole and limited purpose of evidencing its agreement to the waiver of the right to trial by jury contained in Paragraph
15 hereof.

 

	 	KEYBANK NATIONAL ASSOCIATION,
	 	as Agent for the Lenders

 

	 	By:	/s/ Timothy Sylvain
	 	Name:	Timothy Sylvain
	 	Title:	Vice President

 

	 	(SEAL)

 

    	14Exhibit 10.3

 

FOURTH
AMENDMENT TO CREDIT AGREEMENT

 

This
FOURTH AMENDMENT TO CREDIT AGREEMENT (this “Amendment”) dated as of December 17, 2014, by and among QUALITY
INVESTMENT PROPERTIES RICHMOND, LLC, a Delaware limited liability company (“QIPR”), QUALITY TECHNOLOGY SERVICES RICHMOND
II, LLC, a Delaware limited liability company (“QTS Richmond TRS”), QUALITYTECH, LP, a Delaware limited partnership
(“QTLP”), QTS REALTY TRUST, INC., a Maryland corporation (“REIT”), each of the Lenders party hereto, and
REGIONS BANK, as Administrative Agent (the “Agent”).

 

WHEREAS, QIPR, QTS
Richmond TRS, QTLP, REIT, any Additional Subsidiary Borrowers from time to time a party thereto as “Borrowers” pursuant
to §5.5, the Lenders, the Agent and certain other parties have entered into that certain Credit Agreement dated as of December
21, 2012 (as amended, supplemented or otherwise modified and in effect immediately prior to the date hereof, the “Credit
Agreement”); and

 

WHEREAS, QIPR, QTS
Richmond TRS, QTLP, REIT, the Lenders and the Agent desire to amend certain provisions of the Credit Agreement on the terms and
conditions contained herein;

 

NOW, THEREFORE, for
good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged by the parties hereto, the parties
hereto hereby agree as follows:

 

Section 1. Specific
Amendments to Credit Agreement.

 

(a)          The
Credit Agreement is amended by adding the following definitions of “Capitalized Lease Obligations”, “CFM Agreement”,
“CFM Cash Flow”, “CFM Services”, “Designated Person”, “Electronic System”, “Fourth
Amendment”, “Ground Lease”, “Indenture”, “Information Materials”, “Jersey City
Data Center”, “Leased Property”, “Metro Ground Lease”, “Operating Lease”, “Sanctions
Laws and Regulations” and “Santa Clara Ground Lease” to §1.1 of the Credit Agreement in the appropriate
alphabetical order:

 

Capitalized
Lease Obligations. With respect to any Person, the obligations of such Person to pay rent or other amounts under any Capitalized
Lease the amount of such obligations shall be the capitalized amount thereof determined in accordance with GAAP, and the final
maturity of such obligations shall be the date of the last payment of such amounts due under such capital lease (or other arrangement)
prior to the first date on which such capital lease (or other arrangement) may be terminated by the lessee without payment of
a premium or a penalty.         

 

CFM Agreement.
Any agreement pursuant to which a Subsidiary of Parent Company provides CFM Services to any third party that is not an Affiliate
of QTLP, provided any such CFM Agreement shall be subject to the approval of Agent, which shall not be unreasonably withheld,
conditioned or delayed.

 

    	 

    	 

    

 

CFM Cash
Flow. For each Data Center Property being managed by the Parent Company or any of its Subsidiaries for an unaffiliated third
party under a CFM Agreement, the gross revenue recognized by the Parent Company and its Subsidiaries less the direct costs accrued
by the Parent Company and its Subsidiaries in providing such CFM Services (but not less than zero) for the prior two (2) consecutive
fiscal quarters most recently ended multiplied by two (2).

 

CFM Services.
Critical facilities management services provided by a Subsidiary of Parent Company to a third party that owns a Data Center Property,
which services are similar to those provided to Data Center Properties owned or leased by Subsidiaries of Parent Company under
the Management Agreements.

 

Designated
Person. See §6.30.

 

Electronic
System. See §7.4.

 

Fourth
Amendment. The Fourth Amendment to Credit Agreement, dated as of December 17, 2014, among QIPR, QTS Richmond TRS, QTLP and
REIT, the Lenders party thereto, and the Administrative Agent, amending certain provisions of the Credit Agreement.

 

Ground
Lease. A ground lease relating to Real Estate as to which no default or event of default has occurred or with the passage
of time or the giving of notice would occur and which contains the following terms and conditions: (a) a remaining term (exclusive
of any unexercised extension options that are subject to terms or conditions not yet agreed upon and specified in such ground
lease or an amendment thereto, other than a condition that the lessee not be in default under such ground leases) of at least
thirty (30) years or more from the date such Real Estate asset is first leased by a Subsidiary of the Parent Company; (b) the
right of the lessee to mortgage and encumber its interest in the leased property without the consent of the lessor; (c) the obligation
of the lessor to give the holder of any mortgage lien on such leased property written notice of any defaults on the part of the
lessee and agreement of such lessor that such lease will not be terminated until such holder has had a reasonable opportunity
to cure or complete foreclosure, and fails to do so; (d) reasonable transferability of the lessee’s interest under such
lease, including the ability to sublease; and (e) such other rights customarily required by mortgagees making a loan secured by
the interest of the holder of the leasehold estate demised pursuant to a ground lease. Notwithstanding the foregoing, the Metro
Ground Lease and the Santa Clara Ground Lease are each a Ground Lease.

 

Indenture.
The Indenture dated as of July 23, 2014 among QTLP, QTS Finance Corporation, each of the subsidiary guarantors a party thereto
and Deutsche Bank Trust Company Americas, as trustee.

 

Information
Materials. See §7.4.

 

Jersey
City Data Center. The Data Center located at 95 Christopher Columbus Drive, 16th Floor, Jersey City, NJ 07302.

 

Leased
Property. A completed and operational Data Center Property that is leased by QTLP r or a Subsidiary of QTLP pursuant to an
Operating Lease. For the avoidance of doubt, the property known as Jersey City Data Center is a Leased Property.

 

    	- 2 -

    	 

    

 

Metro
Ground Lease. The Lease Agreement dated as of December 1, 2006 between the Fulton County Development Authority, as lessor,
and Quality Investment Properties Atlanta Tech Centre South, L.L.C., as lessee, a short form of which was recorded in the Fulton
County Real Estate Records, on December 29, 2006 in Book 44177, Page 662, as assigned to and assumed by QIPM, with respect to
the tenant’s interest thereunder, pursuant to that certain Assignment of Lease, Deed to Secure Debt and Other Documents,
dated as of February 28, 2007 and as amended on March 9, 2007 by that certain Lessor Estoppel and Agreement, and as the same
may hereafter be amended, restated or modified from time to time.

 

Operating
Lease. Any lease (other than a Ground Lease) with a remaining term (including tenant extension rights) of at least fifteen
(15) years pursuant to which QTLP or its Subsidiaries leases any Data Center Property; provided that the requirement that the
remaining lease term (including tenant extension rights) extend for at least fifteen (15) years shall not apply to the lease of
the Real Estate known as the Jersey City Data Center.

 

Sanctions
Laws and Regulations. Any applicable sanctions, prohibitions or requirements imposed by any applicable executive order or
by any applicable sanctions program administered by the United States State Department, OFAC, the United Nations Security Council,
the European Union or Her Majesty’s Treasury.

 

Santa
Clara Ground Lease. The Ground Lease dated October 2, 1997 between Mission-West Valley Land Corporation, as lessor, and Nexus
Properties, Inc., Kinetic Systems, Inc., Digital Square, Inc., R. Darrell Gary, Michael J. Reidy, Michael J. Reidy as Trustee
of the Ronald Bonaguidi Irrevocable Trust, as lessee, as described in that certain Memorandum of Ground Lease filed for record
in the Office of the Records of the County of Santa Clara on May 15, 1998 as Instrument No. 14187699, as amended by that certain
Assignment of Lease, effective as of October 10, 1997, wherein Digital Square, Inc. assigned its interest to Nexus Properties,
Inc., as described in that certain Assignment of Lease filed for record in the Office of the Records of the County of Santa Clara
on May 15, 1998, under Instrument No. 14187705, as amended by that certain First Amendment to Ground Lease dated April 29, 1998,
as described in that certain Memorandum of First Amendment to Ground Lease filed for record in the Office of the Records of the
County of Santa Clara on May 15, 1998, under Instrument No. 1418770, as amended by that certain Assignment and Assumption of Ground
Lease dated October 31, 2007 wherein lessee assigned its interest to Quality Investment Properties Santa Clara, LLC, a Delaware
limited liability company, as amended by that certain Second Amendment to Ground Lease dated September 24, 2009, and as amended
by that certain Third Amendment to Ground Lease dated November 17, 2011, and as the same may hereafter be amended, restated or
modified from time to time, which ground lease is subject to that certain Master Ground Lease – Parcel 12 dated October
2, 1997 between West Valley-Mission Community College District, a California community college district, as master lessor, and
Mission-West Valley Land Corporation, a California non-profit public benefit corporation, as master lessee, as described in that
certain Memorandum of Master Ground Lease filed for record in the Office of the Records of the County of Santa Clara on May 15,
1998 as Instrument No. 14187697, as amended by that certain First Amendment to Master Ground Lease dated April 29, 1998, as described
in that certain Memorandum of First Amendment to Master Ground Lease filed for record in the Office of the Records of the County
of Santa Clara on May 15, 1998 as Instrument No. 14187698, and as the same may hereafter be amended, restated or modified from
time to time.

 

    	- 3 -

    	 

    

 

(b)          The
Credit Agreement is amended by restating the definitions of “Capitalization Rate”, “Capitalized Lease”,
“Corporate Credit Agreement”, “Data Center Property”, “ERISA”, “ERISA Affiliate”,
“ERISA Reportable Event”, “General Atlantic”, “Governmental Authority”, “Gross Asset
Value”, “Investments”, “Off-Balance Sheet Obligations” and “REIT” set forth in §1.1
of the Credit Agreement in its entirety as follows:

 

Capitalization
Rate.

 

(a)          With
respect to any Stabilized Property owned or leased pursuant to a Ground Lease by QTLP or any of its Subsidiaries, an amount equal
to nine percent (9.00%) (the “Primary Capitalization Rate”).

 

(b)          With
respect to any Stabilized Property of QTLP or any of its Subsidiaries that is a Leased Property, an amount equal to eleven percent
(11.00%) (the “Leased Property Capitalization Rate”).

 

(c)          With
respect to any Data Center Property being managed by the Parent Company or any of its Subsidiaries for an unaffiliated third party
under a CFM Agreement acceptable to the Agent in its reasonable discretion, an amount equal to twenty percent (20.0%) (the “CFM
Capitalization Rate”).

 

Capitalized
Lease. Any lease of (or other arrangement conveying the right to use) real or personal property, or a combination thereof,
which obligations of the lessee or the obligor are required to be capitalized on the balance sheet of such Person in accordance
with GAAP.

 

Corporate
Credit Agreement. That certain Third Amended and Restated Credit Agreement dated as of December 17, 2014, by and among QTLP,
the lenders from time to time party thereto, KeyBank National Association, as administrative agent, and the other parties thereto.

 

Data
Center Property. (i) Highly specialized, secure single or multi-tenant facilities used in whole or in substantial part for
housing a large number of computer servers and the key infrastructure, including generators and heating, ventilation and air conditioning,
or HVAC systems, necessary to power and cool the servers and ancillary office and storage space related thereto, (ii) any
facilities used in whole or in substantial part for technological purposes similar to those described in sub-part (i) above including,
without limitation, manufacturing of semi-conductors or other special purpose buildings requiring custom security or environmental
controls, (iii) any office building that is part of a complex or group of buildings containing the types of facilities described
in sub-parts (i) or (ii) above, (iv) the Real Estate of the QTLP located in Sandston, Virginia commonly known as 6000 Technology
Boulevard, Sandston, Virginia 23150 which shall be used in whole or in part for the uses described in clauses (i)-(iii) above,
and (v) the Real Estate owned by QTLP or its Subsidiaries located at 8007 Bond Street, Lenexa, Kansas 66215.

 

    	- 4 -

    	 

    

 

ERISA.
The Employee Retirement Income Security Act of 1974, as amended and in effect from time to time and all regulations and formal
guidelines issued thereunder.

 

ERISA
Affiliate. Any Person which is treated as a single employer with REIT or its Subsidiaries under §414 of the Code or §4001
of ERISA and any predecessor entity of any of them.

 

ERISA
Reportable Event. A reportable event with respect to a Guaranteed Pension Plan within the meaning of §4043 of ERISA and
the regulations promulgated thereunder as to which the requirement of notice has not been waived or any other event with respect
to which QTLP, a Borrower, a Guarantor or an ERISA Affiliate could have liability under §4062(e) or §4063 of ERISA.

 

General
Atlantic. General Atlantic LLC, a Delaware limited liability company.

 

Governmental
Authority. Any national, state or local government (whether domestic or foreign), any political subdivision thereof or any
other governmental, quasi-governmental, judicial, public or statutory instrumentality, authority, body, agency, bureau, commission,
board, department or other entity (including, without limitation, the Federal Deposit Insurance Corporation, the Comptroller of
the Currency or the Federal Reserve Board, any central bank or any comparable authority) or any arbitrator with authority to bind
a party at law, and including any supra-national bodies such as the European Union or the European Central Bank.

 

Gross
Asset Value. On a consolidated basis for Parent Company and its Subsidiaries, Gross Asset Value shall mean the sum of (without
duplication with respect to any Real Estate):

 

(i)          the
Adjusted Net Operating Income (but not less than zero) of any Real Estate of Parent Company or any of its Subsidiaries which is
a Stabilized Property and is (a) owned or (b) leased pursuant to a Ground Lease divided by the Primary Capitalization Rate; plus

 

(ii)         the
Adjusted Net Operating Income (but not less than zero) of any Real Estate of Parent Company or any of its Subsidiaries which is
a Leased Property divided by the Leased Property Capitalization Rate; plus

 

(iii)        the
CFM Cash Flow with respect to any Data Center Property being managed by Parent Company or any of its Subsidiaries for an unaffiliated
third party under a CFM Agreement divided by the CFM Capitalization Rate; plus

 

(iv)        the
cost basis book value determined in accordance with GAAP of all Real Estate acquired by Parent Company or any of its Subsidiaries
during the prior two (2) fiscal quarters most recently ended; plus

 

(v)         the
book value determined in accordance with GAAP of all Development Properties owned by Parent Company or any of its Subsidiaries;
plus

 

    	- 5 -

    	 

    

 

(vi)        the
book value determined in accordance with GAAP of all Land Assets of Parent Company and its Subsidiaries; plus

 

(vii)       the
aggregate amount of all Unrestricted Cash and Cash Equivalents of Parent Company and its Subsidiaries as of the date of determination;
plus

 

(viii)      the
amount of cash contained in any accounts established by or for the benefit of Parent Company or its Subsidiaries to effectuate
a tax-deferred exchange (also known as a “1031” exchange) in connection with the purchase and/or sale of all or a
portion of Real Estate; plus

 

(ix)         to
the extent approved by Agent, the aggregate amount of all cash and Cash Equivalents (excluding amounts included in (vii) and (viii)
above) of Parent Company and its Subsidiaries as of the date of determination that does not qualify as “Unrestricted”
as defined in the definition of Unrestricted Cash and Cash Equivalents.

 

Gross Asset
Value will be adjusted, as appropriate, for acquisitions, dispositions and other changes to the portfolio during the two fiscal
quarters most recently ended prior to a date of determination. All income, expense and value associated with assets included in
Gross Asset Value disposed of during the two fiscal quarter period most recently ended prior to a date of determination will be
eliminated from calculations. Additionally, without limiting or affecting any other provision hereof, Gross Asset Value shall
not include any income or value associated with Real Estate which is not operated or intended to be operated principally as a
Data Center Property. Gross Asset Value will be adjusted to include an amount equal to Parent Company or any of its Subsidiaries’
pro rata share (based upon the greater of such Person’s Equity Percentage in such Unconsolidated Affiliate or such Person’s
pro rata liability for the Indebtedness of such Unconsolidated Affiliate) of the Gross Asset Value attributable to any of the
items listed above in this definition owned by such Unconsolidated Affiliate. For purposes of this definition, to the extent that
Gross Asset Value attributable to (i) Leased Properties would exceed ten percent (10%) of the Gross Asset Value, or (ii)
Ground Leases (excluding the Metro Ground Lease) would exceed twenty-five percent (25%) of Gross Asset Value, then in each case
such excess shall be excluded. 

 

    	- 6 -

    	 

    

 

Investments.
With respect to any Person, all shares of capital stock, evidences of Indebtedness and other securities issued by any other Person
and owned by such Person, all loans, advances, or extensions of credit (other than endorsements for collection) to, or contributions
to the capital of, any other Person, all purchases of the securities or business or integral part of the business of any other
Person and commitments and options to make such purchases, all interests in real property, and all other investments; provided,
however, that the term “Investment” shall not include (i) inventory and other tangible personal property
acquired in the ordinary course of business, (ii) current trade and customer accounts receivable for services rendered in
the ordinary course of business and payable in accordance with customary trade terms, (iii) prepaid expenses incurred in the ordinary
course of business, (iv) advances in the ordinary course of business to employees for travel expenses, relocation expenses and
similar expenditures, (v) obligations under Derivatives Contracts to the extent permitted under §8.12, or (vi) investments
consisting of cash collateral to secure (x) letters of credit, (y) Derivative Contracts permitted under §8.12 or (z) payment
of, workers’ compensation, unemployment insurance, old age pensions or other social security obligations. In determining
the aggregate amount of Investments outstanding at any particular time: (a) there shall be included as an Investment all
interest accrued with respect to Indebtedness constituting an Investment unless and until such interest is paid; (b) there
shall be deducted in respect of each Investment any amount received as a return of capital; (c) there shall not be deducted
in respect of any Investment any amounts received as earnings on such Investment, whether as dividends, interest or otherwise,
except that accrued interest included as provided in the foregoing clause (a) may be deducted when paid; and (d) there shall
not be deducted in respect of any Investment any decrease in the value thereof.

 

Off-Balance
Sheet Obligations. Liabilities and obligations of REIT or any of its Subsidiaries or any other Person in respect of “off-balance
sheet arrangements” (as defined in Item 303(a)(4)(ii) of Regulation S-K promulgated under the Securities Act, which REIT
would be required to disclose in the “Management’s Discussion and Analysis of Financial Condition and Results of Operations”
section of REIT’s report on Form 10-Q or Form 10-K (or their equivalents) which REIT is required to file with the SEC or
would be required to file if it were subject to the jurisdiction of the SEC (or any Governmental Authority substituted therefor).

 

REIT.
QTS Realty Trust, Inc., a Maryland corporation.

 

(c)          The
Credit Agreement is amended by restating clause (c) of the definition of “Change of Control” set forth in §1.1
of the Credit Agreement in its entirety as follows:

 

(c)          Following
the occurrence of the IPO Event, REIT or, if applicable, the Subsidiary General Partner, shall fail to be the sole general partner
of QTLP, shall fail to own such general partnership interest in QTLP free or any Lien (other than Liens permitted by §8.2(i)),
shall fail to control the management and policies of QTLP, or shall, together with Chad L. Williams and his Permitted Transferees,
cease to own and control, directly or indirectly, at least 80% of the outstanding partnership interests of QTLP;

 

(d)          The
Credit Agreement is amended by replacing the reference to $6,000,000 in §6.20(a) with a reference to $10,000,000.

 

(e)          The
Credit Agreement is amended by restating §6.30 in its entirety as follows:

 

    	- 7 -

    	 

    

 

§6.30
OFAC. None of the Borrowers, the Guarantors, Subsidiaries of the Borrowers and Guarantors or any of their respective directors
or officers, or, to the knowledge of REIT or QTLP, any Affiliate, agent or employee of any Borrower, any Guarantor or any Subsidiary
of the Borrowers or Guarantors (i) is (or will be) a person with whom any Lender is restricted from doing business under OFAC
(including those Persons named on OFAC’s Specially Designated and Blocked Persons list) or under any statute, executive
order (including the September 24, 2001 Executive Order Blocking Property and Prohibiting Transactions With Persons Who Commit,
Threaten to Commit, or Support Terrorism), or other governmental action or (ii) is engaged (or will engage) in any dealings or
transactions or otherwise be associated with such persons (any such Person, a “Designated Person”). In addition, each
Borrower hereby agrees to provide to the Lenders any additional information that a Lender reasonably deems necessary from time
to time in order to ensure compliance with all applicable laws concerning money laundering and similar activities. None of the
Borrowers, the Guarantors, or any Subsidiary, director or officer of any Borrower or any Guarantor or, to the knowledge of REIT
or QTLP, any Affiliate, agent or employee of any Borrower or any Guarantor, has engaged in any activity or conduct which would
violate any applicable anti-bribery, anti-corruption or anti-money laundering laws or regulations in any applicable jurisdiction,
including without limitation, any Sanctions Laws and Regulations. REIT and QTLP maintain policies and procedures designed to achieve
compliance with any applicable anti-bribery, anti-corruption or anti-money laundering laws or regulations in any applicable jurisdiction,
including without limitation, any Sanctions Laws and regulations and the Foreign Corrupt Practices Act of 1977, as amended.

 

(f)          The
Credit Agreement is amended by restating §7.4(i) in its entirety as follows:

 

(i)          simultaneously
with the delivery of the financial statements referred to in clauses (a) and (b) above, a statement of Funds from Operations of
the Parent Company and its Subsidiaries for such fiscal year or quarter, as applicable.

 

(g)          The
Credit Agreement is amended by restating the last paragraph of §7.4 in its entirety as follows:

 

    	- 8 -

    	 

    

 

Each Borrower shall cooperate
with the Agent in connection with the publication of certain materials and/or information provided by or on behalf of the Borrowers.
Documents required to be delivered pursuant to the Loan Documents shall be delivered by or on behalf of the Borrowers to the Agent
and the Lenders (collectively, “Information Materials”) pursuant to this Section and each Borrower shall designate
Information Materials (a) that are either available to the public or not material with respect to such Borrower and its Subsidiaries
or any of their respective securities for purposes of United States federal and state securities laws, as “Public Information”
and (b) all other information shall be considered “Private Information.” Any material to be delivered pursuant to
this §7.4 may be delivered electronically directly to Agent and the Lenders provided that such material is in a format reasonably
acceptable to Agent, and such material shall be deemed to have been delivered to Agent and the Lenders upon Agent’s receipt
thereof. Upon the request of Agent, the Borrowers and the Guarantors shall deliver paper copies of the requested documents to
Agent and the Lenders. The Borrowers and the Guarantors authorize Agent and Arrangers to disseminate any such materials, including
without limitation the Information Materials through the use of Intralinks, SyndTrak or any other electronic information dissemination
system (an “Electronic System”). Any such Electronic System is provided “as is” and “as available.”
The Agent does not warrant the adequacy of any Electronic System and expressly disclaims liability for errors or omissions in
any notice, demand, communication, information or other material provided by or on behalf of the Borrowers or the Guarantors that
is distributed over or by any such Electronic System (“Communications”). No warranty of any kind, express, implied
or statutory, including, without limitation, any warranty of merchantability, fitness for a particular purpose, non-infringement
of third-party rights or freedom from viruses or other code defects, is made by Agent in connection with the Communications or
the Electronic System. In no event shall the Agent or any of its directors, officers, employees, agents or attorneys have any
liability to the Borrowers or the Guarantors, any Lender or any other Person for damages of any kind, including, without limitation,
direct or indirect, special, incidental or consequential damages, losses or expenses (whether in tort, contract or otherwise)
arising out of any Borrower’s, any Guarantor’s, or the Agent’s transmission of Communications through the Electronic
System, and the Borrowers and the Guarantors release Agent and the Lenders from any liability in connection therewith. Certain
of the Lenders (each, a “Public Lender”) may have personnel who do not wish to receive material non-public information
with respect to the Borrowers, their Subsidiaries or their Affiliates, or the respective securities of any of the foregoing, and
who may be engaged in investment and other market related activities with respect to such Persons’ securities. Each Borrower
hereby agrees that it will identify that portion of the Information Materials that may be distributed to the Public Lenders and
that (i) all such Information Materials shall be clearly and conspicuously marked “PUBLIC” which, at a minimum, shall
mean that the word “PUBLIC” shall appear prominently on the first page thereof; (ii) by marking Information Materials
“PUBLIC,” such Borrower shall be deemed to have authorized the Agent and the Lenders to treat such Information Materials
as not containing any material non-public information with respect to such Borrower, its Subsidiaries, its Affiliates or its respective
securities for purposes of United States Federal and state securities laws (provided, however, that to the extent such Information
Materials constitute confidential information, they shall be treated as provided in §18.7); (iii) all Information Materials
marked “PUBLIC” are permitted to be made available through a portion of any electronic dissemination system designated
“Public Investor” or a similar designation; and (iv) the Agent shall treat any Information Materials that are not
marked “PUBLIC” as being suitable only for posting on a portion of any electronic dissemination system not designated
“Public Investor” or a similar designation.

 

(h)          The
Credit Agreement is amended by restating §7.20 in its entirety as follows:

 

§7.20         Sanctions
Laws and Regulations. No Borrower shall, directly or indirectly, use the proceeds of the Loans or lend, contribute or otherwise
make available such proceeds to any Guarantor, Subsidiary, Unconsolidated Affiliate or other Person (i) to fund any activities
or business of or with any Designated Person, or in any country or territory, that at the time of such funding is itself the subject
of territorial sanctions under applicable Sanctions Laws and Regulations, (ii) in any manner that would result in a violation
of applicable Sanctions Laws and Regulations by any party to this Agreement, or (iii) in any manner that would cause the Borrower,
the Guarantors or any of their respective Subsidiaries to violate the United States Foreign Corrupt Practices Act. None of the
funds or assets of any Borrower or Guarantor that are used to pay any amount due pursuant to this Agreement shall constitute funds
obtained from transactions with or relating to Designated Persons or countries which are themselves the subject of territorial
sanctions under applicable Sanctions Laws and Regulations. REIT and QTLP shall maintain policies and procedures designed to achieve
compliance with any applicable anti-bribery, anti-corruption or anti-money laundering laws or regulations in any applicable jurisdiction,
including without limitation, any Sanctions Laws and Regulations and the Foreign Corrupt Practices Act of 1977, as amended.

 

    	- 9 -

    	 

    

 

(i)          The
Credit Agreement is amended by restating §7.21(a)(iii) in its entirety as follows:

 

(iii)        The
“single purpose entity” provisions included in the Entity Agreements (hereinafter defined) of the Borrowers and each
SPE Entity shall not, without Agent’s prior written consent, be amended, altered, rescinded or otherwise revoked until the
Loans have been paid in full and the Lenders have no obligation to make advances of the proceeds of the Loans except to amend
those provisions in the Entity Agreements for which changes are necessary in order to conform the terms thereof with changes made
to §7.21(b) pursuant to the Fourth Amendment.

 

(j)          The
Credit Agreement is amended by restating §7.21(b)(i)(E)(g.) in its entirety as follows:

 

g.           maintain
separate financial statements, showing its assets and liabilities separate and apart from those of any other Person and not have
its assets listed on any financial statement of any other Person; provided, however, that a Borrower’s assets may be included
in a consolidated financial statement of its Affiliate provided that such assets shall also be listed on such Borrower’s
own separate balance sheet;

 

(k)          The
Credit Agreement is amended by restating §7.21(b)(i)(E)(i.) in its entirety as follows:

 

i.            not
enter into any transaction with an Affiliate of such Borrower except as permitted by §8.13;

 

(l)          The
Credit Agreement is amended by restating §7.21(b)(i)(E)(k.) in its entirety as follows:

 

k.          except
with respect to (1) the Obligations of the Borrowers and the Guarantors under the Loan Documents, (2) the Hedge Obligations
and (3) guaranties of the Indebtedness of another Person permitted under §8.1, not hold out its credit or assets as
being available to satisfy the obligations of any other Person;

 

(m)          The
Credit Agreement is amended by restating §7.21(b)(i)(E)(r.) in its entirety as follows:

 

r.            not
acquire any obligation or securities of any member, shareholder or partner of a Borrower or of any Affiliate of such Borrower
any of its members, shareholders or partners except obligations with respect to guaranties of the Indebtedness of an Affiliate
of a Borrower permitted under §8.1;

 

    	- 10 -

    	 

    

 

(n)          The
Credit Agreement is amended by restating §7.21(b)(i)(G)(a.) in its entirety as follows:

 

a.           guarantee
any obligation of any Person, including any Affiliate, or become obligated for the debts of any other Person or hold out its credit
as being available to pay the obligations of any other Person, except (1) Obligations of another Borrower or Guarantor pursuant
to the Loan Documents, (2) the Hedge Obligations and (3) guaranties of the Indebtedness of another Person permitted
under §8.1;

 

(o)          The
Credit Agreement is amended by restating §7.21(b)(i)(G)(c.) in its entirety as follows:

 

(c)          incur,
create or assume any indebtedness or liabilities other than (1) indebtedness and liabilities incurred in the ordinary course
of its business that are related to the ownership and operation of the Mortgaged Property and the provision of services to tenants,
licensees and other users of the Mortgaged Property in connection with the operation of the Mortgaged Property as a Data Center
Property or associated with the ownership or lease of such Borrower’s equipment and other personal property owned by such
Borrower and are expressly permitted under the Loan Documents; and (2) guaranties of Indebtedness of another Person permitted
under §8.1.

 

(p)          The
Credit Agreement is amended by restating §7.21(b)(ii)(C) in its entirety as follows:

 

(C)          with
respect to §7.21(b)(i)(G)(c.) the SPE Entity has not and shall not incur any debt, secured or unsecured, direct or contingent
(including, without limitation, guaranteeing any obligation) other than (1) the Obligations (2) the Hedge Obligations
and (3) guaranties of Indebtedness of another Person permitted under §8.1.

 

(q)          The
Credit Agreement is amended by restating §8.1(e) in its entirety as follows:

 

(e)          Indebtedness
arising under, or in connection with, the Corporate Credit Agreement in an aggregate amount not to exceed $850,000,000 and any
Permitted Refinancing thereof; provided that neither the REIT nor, if applicable, the Subsidiary General Partner shall incur any
Indebtedness under this clause (e) other than with respect to Indebtedness arising under any conditional or springing guaranty
executed with respect to the Corporate Credit Agreement or any Permitted Refinancing thereof which is in form and substance substantially
the same as the Springing Guaranty;

 

(r)          The
Credit Agreement is amended by restating §8.1(g) in its entirety as follows:

 

(g)          subject
to the provisions of §9, Secured Debt, provided that (A) the aggregate amount of Secured Debt shall not exceed forty percent
(40%) of Gross Asset Value; and (B) in addition to the limitation set forth in the immediately preceding clause (A), (1) the aggregate
amount of Secured Debt that is Recourse Indebtedness (excluding the Obligations and the Hedge Obligations as defined in and under
the Corporate Credit Agreement to the extent ever secured thereunder) shall not exceed fifteen percent (15%) of Gross Asset Value,
(2) the aggregate amount of Capitalized Lease Obligations of REIT and its Subsidiaries with respect to any of the Unencumbered
Asset Pool Properties as defined in the Corporate Credit Agreement, including any personal property used in connection therewith,
shall not exceed $30,000,000.00.

 

    	- 11 -

    	 

    

 

(s)          The
Credit Agreement is amended by restating §8.1(k) in its entirety as follows:

 

(k)          subject
to the provisions of §9, Unsecured Indebtedness of QTLP, REIT (following the occurrence of the IPO Event) or Subsidiaries
of QTLP that are not a Borrower, QTS Richmond TRS or an Additional Subsidiary Guarantor (or any direct or indirect owners of such
Subsidiaries), provided, however, that Subsidiaries of QTLP that are Borrowers, QTS Richmond TRS or any Additional Subsidiary
Guarantor (or any direct or indirect owners of such Subsidiaries) may guarantee Unsecured Indebtedness of QTLP or any of its Subsidiaries.

 

(u)          The
Credit Agreement is amended by deleting §8.1(h) in its entirety.

 

(v)         The
Credit Agreement is amended by restating the last paragraph of §8.1 in its entirety as follows:

 

Notwithstanding
anything in this Agreement to the contrary, (i) none of the Indebtedness described in §8.1(g) above shall have any of the
Mortgaged Properties or any interest therein or equipment related thereto or any direct or indirect ownership interest in a Borrower,
QTS Richmond TRS or an Additional Subsidiary Guarantor as collateral, a borrowing base, asset pool or any similar form of credit
support for such Indebtedness (provided that the foregoing shall not preclude Subsidiaries of the Parent Company (other than a
Borrower, QTS Richmond TRS or an Additional Subsidiary Guarantor (or any direct or indirect owners of such Subsidiaries)) to incur
Non-Recourse Indebtedness subject to the terms of this §8.1 or recourse to the general credit of the Parent Company (other
than QTLP)), and (ii) none of the Borrowers, QTS Richmond TRS, Additional Subsidiary Guarantors or any Subsidiary of QTLP directly
or indirectly owning an interest therein shall create, incur, assume, guarantee or be or remain liable, contingently or otherwise,
with respect to any Indebtedness (including, without limitation, pursuant to any conditional or limited guaranty or indemnity
agreement creating liability with respect to usual and customary exclusions from the non-recourse limitations governing the Non-Recourse
Indebtedness of any Person, or otherwise) other than (A)  Indebtedness described in §§8.1(a) through(f), (j)(as
to QIPM only) and (k) above (B) and Capitalized Lease Obligations not otherwise prohibited by §8.1(g) above incurred
by Quality Technologies Services, LLC, so long as no Liens attach to (x) any ownership or other equity interest held by Quality
Technologies Services, LLC or any other Subsidiary of QTLP in any of the direct or indirect Subsidiaries of Quality Technologies,
LLC or (y) any other assets of Quality Technologies Services, LLC other than the property leased pursuant to any Capital
Lease under which such Capitalized Lease Obligations arise.

 

    	- 12 -

    	 

    

 

(w)          The
Credit Agreement is amended by deleting the word “and” at the end of clause (vii) of §8.2, deleting the
period at the end of clause (viii) of §8.2 and replacing it with a semicolon, and adding the following clauses (ix) and (x)
after clause (viii) of §8.2:

 

(ix)         with
respect to any Leased Property, (x) any reversionary interest or title of lessor under any applicable Operating Lease with respect
thereto or (y) Lien, easement, restriction or encumbrance to which the interest or title of such lessor may be subject; and

 

(x)          Liens
arising under Capitalized Lease Obligations with respect to the assets subject to such Capital Leases.

 

(x)          The
Credit Agreement is amended by restating §8.3(i) in its entirety as follows:

 

(i)          Investments
in Development Properties, provided that the aggregate Investment therein shall not exceed thirty percent (30%) of Gross Asset
Value;

 

(y)          The
Credit Agreement is amended by restating §8.7(a) in its entirety as follows:

 

(a)          Neither
QTLP nor REIT shall pay any Distribution to its respective partners, members or other owners, if such Distribution is in excess
of the amount which when added to the amount of all other Distributions paid by QTLP and the REIT in the same calendar quarter
and the preceding three (3) calendar quarters (without duplication of any Distribution paid by QTLP to REIT from which REIT pays
a Distribution to its owners), would exceed the sum of ninety-five percent (95%) of REIT’s Funds from Operations for such
period; provided that the limitations contained in this §8.7(a) shall not preclude (i) REIT and QTLP from making
Distributions in an amount equal to the minimum distributions required under the Code to maintain the REIT Status of REIT, as
evidenced by a certification of the principal financial or accounting officer of Parent Company containing calculations in detail
reasonably satisfactory in form and substance to the Agent, and (ii) REIT from redeeming partnership interests of QTLP in
exchange for shares of common stock (or other comparable equity interests) of REIT and any such redemption shall not be included
in the calculation of whether Distributions have exceeded ninety-five percent (95%) of REIT’s Funds from Operations for
any period.

 

(z)          The
Credit Agreement is amended by replacing the first sentence of §8.8 with the following sentence:

 

QTLP will
not, and will not permit its Subsidiaries to, sell, transfer or otherwise dispose of any material asset to any Person that is
not a Borrower or a Wholly Owned Subsidiary of QTLP other than pursuant to a bona fide arm’s length transaction; provided,
however, that the no Borrower or any Guarantor that is a Subsidiary of QTLP will, and no Borrower or any Guarantor that is a Subsidiary
of QTLP will permit any of its respective Subsidiaries to, sell, transfer or otherwise dispose of any material asset other than
pursuant to a bona fide arm’s length transaction.

 

    	- 13 -

    	 

    

 

(aa)         The
Credit Agreement is amended by restating Section §9.4 in its entirety as follows:

 

§9.4           Consolidated
Total Indebtedness to Gross Asset Value. Parent Company will not at any time permit the ratio of Consolidated Total Indebtedness
to Parent’s Gross Asset Value (expressed as a percentage) to exceed sixty percent (60%).

 

(bb)         The
Credit Agreement is amended by restating Section §9.5 in its entirety as follows:

 

§9.5           Adjusted
Consolidated EBITDA to Consolidated Fixed Charges. Parent Company will not permit at any time the ratio of (a) Adjusted Consolidated
EBITDA to (b) Consolidated Fixed Charges for the two (2) most recently ended calendar quarters annualized, to be less than 1.70
to 1.00.

 

(cc)         The
Credit Agreement is amended by restating Section §9.6 in its entirety as follows:

 

§9.6           Minimum
Consolidated Tangible Net Worth. Parent Company will not at any time permit Parent Company’s Consolidated Tangible Net
Worth to be less than the sum of (a) eighty-five percent (85%) of the Net Offering Proceeds of any Equity Offering after
the Fourth Amendment Date, plus (b) $645,000,000.00.

 

(dd)         The
Credit Agreement is amended by restating Section §9.7 in its entirety as follows:

 

§9.7           Unhedged
Variable Rate Debt. Parent Company shall not at any time permit the Unhedged Variable Rate Debt of Parent Company and its
Subsidiaries to exceed thirty-five percent (35%) of Gross Asset Value.

 

(ee)         The
Credit Agreement is amended by restating Section §12.1(g) in its entirety as follows:

 

(g)          any
of the Borrowers, the Guarantors or any of their respective Subsidiaries shall fail to pay when due (including, without limitation,
at maturity), or within any applicable period of grace, any principal, interest or other amount on account any obligation for
borrowed money or credit received or other Indebtedness (including under any Derivatives Contract), or shall fail to observe or
perform any term, covenant or agreement contained in any agreement by which it is bound, evidencing or securing any obligation
for borrowed money or credit received or other Indebtedness (including under any Derivatives Contract) for such period of time
as would permit (assuming the giving of appropriate notice if required) the holder or holders thereof or of any obligations issued
thereunder to accelerate the maturity thereof or require the termination or other settlement of such obligation; provided that
the events described in §12.1(g) shall not constitute an Event of Default unless such failure to perform, together with other
failures to perform as described in §12.1(g), involve singly or in the aggregate obligations for borrowed money or credit
received or other Recourse Indebtedness totaling in excess of $50,000,000.00 or Non-Recourse Indebtedness in excess of $75,000,000.00;

 

    	- 14 -

    	 

    

 

(ff)         The
Credit Agreement is amended by replacing the reference to $10,000,000 in Section §12.1(k) with a reference to $20,000,000.

 

(gg)         The
Credit Agreement is amended by replacing the reference to $10,000,000 in Section §12.1(n) with a reference to $20,000,000.

 

(hh)         The
Credit Agreement is amended by restating the second sentence of §16 in its entirety as follows:

 

In litigation, or the preparation
therefor, the Lenders and the Agent shall be entitled to select a single law firm as their own counsel and, if necessary, any
local counsel or conflicts counsel, and in addition to the foregoing indemnity, the Borrowers and the Guarantors agree to pay
promptly the reasonable out-of-pocket fees and expense of all such counsel.

 

Section 2. Conditions
Precedent. The effectiveness of this Amendment is subject to receipt by the Agent of each of the following, each in form and
substance satisfactory to the Agent:

 

(a)          a
counterpart of this Amendment duly executed by QIPR, QTS Richmond TRS, QTLP, REIT and each of the Lenders;

 

(b)          the
Second Amended and Restated Limited Liability Company Agreements of QIPR and of QTS Richmond TRS, each certified by a duly authorized
office of QIPR and QTS Richmond TRS, respectively; and

 

(c)          such
other documents, instruments and agreements as the Agent may reasonably request.

 

Section 3. Representations.
Each Borrower and Guarantor represents and warrants to the Agent and each Lender as follows:

 

(a)          Authorization.
Each of QIPR, QTS Richmond TRS, QTLP and REIT has the right and power, and has taken all necessary action to authorize the execution
and delivery of this Amendment and to perform its obligations hereunder and under the Credit Agreement, as amended by this Amendment,
in accordance with their respective terms. This Amendment has been duly executed and delivered by the duly authorized officers
of QIPR, QTS Richmond TRS and REIT and a duly authorized officer of the general partner of QTLP, and each of this Amendment and
the Credit Agreement, as amended by this Amendment, is a legal, valid and binding obligation of QIPR, QTS Richmond TRS, QTLP and
REIT enforceable against QIPR, QTS Richmond TRS, QTLP and REIT in accordance with its respective terms except as the same may
be limited by bankruptcy, insolvency, and other similar laws affecting the rights of creditors generally and the availability
of equitable remedies for the enforcement of certain obligations (other than the payment of principal) contained herein or therein
and as may be limited by equitable principles generally.

 

    	- 15 -

    	 

    

 

(b)          Compliance
with Laws, etc. The execution and delivery by QIPR, QTS Richmond TRS, QTLP and REIT of this Amendment and the performance
by each of QIPR, QTS Richmond TRS, QTLP and REIT of this Amendment and the Credit Agreement, as amended by this Amendment, in
accordance with their respective terms, do not and will not, by the passage of time, the giving of notice or otherwise: (i) require
the approval or consent of, or filing or registration with, or the giving of any notice to, any court, department, board, governmental
agency or authority; (ii) conflict with or result in any breach or contravention of any provision of law, statute, rule or
regulation to which such Person is subject or any judgment, order, writ, injunction, license or permit applicable to any such
Person, (iii) conflict with or constitute a default (whether with the passage of time or the giving of notice, or both) under
any provision of the partnership agreement, articles of incorporation or other charter documents or bylaws of, or any material
agreement or other instrument binding upon, any such Person or any of its properties, or (iv) result in or require the imposition
of any lien or other encumbrance on any of the properties, assets or rights of any such Person other than the liens and encumbrances
in favor of Agent contemplated by the Credit Agreement and the other Loan Documents.

 

(c)          No
Default. No Default or Event of Default has occurred and is continuing as of the date hereof or will exist immediately after
giving effect to this Amendment.

 

Section 4.   Reaffirmation
of Representations by Borrowers and Guarantors. Each of QIPR, QTS Richmond TRS, QTLP and REIT hereby repeats and reaffirms
all representations and warranties made by such Person to the Agent and the Lenders in the Credit Agreement and the other Loan
Documents to which it is a party on and as of the date hereof with the same force and effect as if such representations and warranties
were set forth in this Amendment in full.

 

Section 5.   Certain
References. Each reference to the Credit Agreement in any of the Loan Documents shall be deemed to be a reference to the Credit
Agreement as amended by this Amendment. This Amendment shall constitute a Loan Document.

 

Section 6.   Expenses.
The Borrowers shall reimburse the Agent upon demand for all reasonable out-of-pocket costs and expenses (including attorneys’
fees) actually incurred by the Agent in connection with the preparation, negotiation and execution of this Amendment and the other
agreements and documents executed and delivered in connection herewith.

 

Section 7.   Benefits.
This Amendment shall be binding upon and shall inure to the benefit of the parties hereto and their respective successors and
assigns.

 

Section 8.  GOVERNING
LAW. THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK.

 

Section 9. Effect.
Except as expressly herein amended, the terms and conditions of the Credit Agreement and the other Loan Documents (other than
the Guaranty and the Springing Guaranty) remain in full force and effect. Except as expressly amended by the First Amendment to
Guaranty and the First Amendment to Springing Guaranty, respectively, the Guaranty and Springing Guaranty remain in full force
and effect. This Amendment shall not limit, impair or constitute a waiver of the rights, powers or remedies available to the Lenders
under the Credit Agreement or any other Loan Document. Unless otherwise stated within any amendment contained herein, the amendments
contained herein shall be deemed to have prospective application only.

 

Section 10. Counterparts.
This Amendment may be executed in any number of counterparts, each of which shall be deemed to be an original and shall be binding
upon all parties, their successors and assigns.

 

Section 11. Reaffirmation
of Guaranty. Each of QTLP and QTS Richmond TRS hereby reaffirms its continuing obligations to the Agent and the Lenders under
the Guaranty and agrees that the transactions contemplated by the Amendment shall not in any way affect the validity and enforceability
of the Guaranty, or reduce, impair or discharge the obligations of such Person, in its capacity as a Guarantor, thereunder. REIT
reaffirms its obligations to the Agent and the Lenders under the Springing Guaranty and agrees that the transactions contemplated
by the Amendment shall not in any way affect the validity and enforceability of the Springing Guaranty, or reduce, impair or discharge
the obligations of REIT, in its capacity as a Guarantor, thereunder.

 

    	- 16 -

    	 

    

 

Section 12.     Waiver
of Claims. Each of QIPR, QTS Richmond TRS, QTLP and REIT acknowledges, represents and agrees that as of the date hereof it
has no defenses, setoffs, claims, counterclaims or causes of action of any kind or nature whatsoever with respect to the Loan
Documents, the administration or funding of the Loans or with respect to any acts or omissions of Agent or any of the Lenders,
or any past or present officers, agents or employees of Agent or any of the Lenders, and each of QIPR, QTS Richmond TRS, QTLP
and REIT does hereby expressly waive, release and relinquish any and all such defenses, setoffs, claims, counterclaims and causes
of action, if any.

 

Section 13.    Definitions.
All capitalized terms not otherwise defined herein are used herein with the respective definitions given them in the Credit Agreement.

 

[Signatures on Next Page]

 

    	- 17 -

    	 

    

 

IN WITNESS WHEREOF,
the parties hereto have caused this Fourth Amendment to Credit Agreement to be executed as of the date first above written.

 

	 	QIPR:
	 	 
	 	QUALITY INVESTMENT PROPERTIES RICHMOND, LLC, a Delaware limited liability
    company
	 	 	 
	 	By:	/s/ William H. Schafer
	 	Name:	William H. Schafer
	 	Title:	Chief Financial Officer
	 	 	(SEAL)
	 	 	 
	 	QTLP:
	 	 
	 	QUALITYTECH, LP, a Delaware limited partnership
	 	 	 
	 	By:	QTS Realty Trust, Inc. a Maryland corporation, its general partner
	 	 	 
	 	By:	/s/ William H. Schafer
	 	Name:	William H. Schafer
	 	Title:	Chief Financial Officer
	 	 	(SEAL)
	 	 	 
	 	QTS RICHMOND TRS:
	 	 
	 	QUALITY TECHNOLOGY SERVICES RICHMOND II, LLC, a
    Delaware limited liability company
	 	 
	 	By:	/s/ William H. Schafer
	 	Name:	William H. Schafer
	 	Title:	Chief Financial Officer
	 	 	(SEAL)
	 	REIT:
	 	 
	 	QTS REALTY TRUST, INC., a Maryland corporation
	 	 
	 	By	/s/  William H. Schafer
	 	Name:	William H. Schafer
	 	Title:	Chief Financial Officer
	 	 	(SEAL)

 

[Signatures Continue on Next Page]

 

    	 

    	 

    

 

[Signature Page to Fourth Amendment
to Credit Agreement with Quality Investment Properties Richmond, LLC et al.]

 

	 	regions bank, as Agent and as a Lender
	 	 	 
	 	By:	/s/ Kerri L. Raines
	 	 	Name:	Kerri L. Raines
	 	 	Title:	Vice President

 

[Signatures Continue on Next Page]

 

    	 

    	 

    

 

[Signature Page to Fourth Amendment
to Credit Agreement with Quality Investment Properties Richmond, LLC et al.]

  

	 	BANK OF AMERICA, N.A.
	 	 	 
	 	By:	/s/ Gary J. Katunas
	 	 	Name:	Gary J. Katunas
	 	 	Title:	Senior Vice President

 

[Signatures Continue on Next Page]

 

    	 

    	 

    

 

[Signature Page to Fourth Amendment
to Credit Agreement with Quality Investment Properties Richmond, LLC et al.]

  

	 	CITIZENS BANK, NATIONAL ASSOCIATION
	 	 	 
	 	By:	/s/ David R. Jablonowski
	 	 	Name:	David R. Jablonowski
	 	 	Title:	Senior Vice President

 

[Signatures Continue
on Next Page]

 

    	 

    	 

    

 

[Signature Page to Fourth Amendment
to Credit Agreement with Quality Investment Properties Richmond, LLC et al.]

  

	 	TORONTO DOMINION (TEXAS) LLC
	 	 	 
	 	By:	/s/ Marie Fernandes
	 	 	Name:	Marie Fernandes
	 	 	Title:	Authorized Signatory

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