<PAGE>

                                                                   EXHIBIT 10.11


                                 LEASE BETWEEN


                             LAING BEAUMEADE, INC.
                             ---------------------

                                   Landlord


                                      AND


                                 EQUINIX, INC.
                                 -------------

                                    Tenant
<PAGE>

                               TABLE OF CONTENTS

                                                                            Page
                                                                            ----
1.  GRANT/TERM/USE........................................................     1
2.  RENT..................................................................     2
3.  CONSTRUCTION AND ACCEPTANCE OF LEASED PREMISES........................     2
4.  OPERATING EXPENSES....................................................     2
5.  SECURITY DEPOSIT......................................................     5
6.  UTILITIES.............................................................     5
7.  MAINTENANCE AND REPAIR BY LANDLORD....................................     6
8.  CONTROL...............................................................     6
9.  OCCUPANCY BY TENANT...................................................     7
10.  INSURANCE; INDEMNITY.................................................     7
11.  REPAIRS..............................................................     9
12.  TENANT'S PROPERTY....................................................     9
13.  IMPROVEMENTS AND ALTERATIONS BY TENANT...............................    10
14.  CASUALTY.............................................................    11
15.  SUBLETTING AND ASSIGNMENT............................................    12
16.  LIENS................................................................    12
17.  CONDEMNATION.........................................................    13
18.  PARKING..............................................................    14
19.  ACCESS...............................................................    15
20.  SIGNS................................................................    15
21.  SUBORDINATION........................................................    16
22.  TENANT'S DEFAULT.....................................................    16
23.  LANDLORD'S REMEDIES..................................................    17
24.  QUIET ENJOYMENT......................................................    19
25.  FINANCING............................................................    19
26.  HOLDOVER TENANCY.....................................................    20
27.  ESTOPPEL CERTIFICATE/FINANCIAL STATEMENT.............................    20
28.  MISCELLANEOUS........................................................    21
EXHIBIT "A" - Leased Premises.............................................    27
EXHIBIT "B" - Land Description............................................    28
EXHIBIT "C" - Annual Base Rent............................................    29
EXHIBIT "D" - Work Agreement..............................................    30
EXHIBIT "E" - Rules and Regulations.......................................    35
EXHIBIT "F" - Special Stipulations........................................    39
EXHIBIT "G" - Roof License Agreement......................................    45
EXHIBIT "H" - Construction Criteria.......................................    51
EXHIBIT "I" - Subordination, Non-Disturbance and Attornment Agreement.....    55
EXHIBIT "J" - Landlord's Approved General Contractor List.................    39
EXHIBIT "K" - Special Tenant Requirements.................................    40
<PAGE>

key terms
               (a)  "Additional Rent" is defined in Section 2.
               (b)  "Base Rent" is defined in Section 2.
               (c)  "Commencement Date" is defined in Section 1(b).
               (d)  "Common Areas" is defined in Section 1(a).
               (e)  "Declaration" is defined in Section 4(b).
               (f)  "Lease Year" is defined in Section 2(b).
               (g)  "Mortgagee" and "Mortgage" are defined in Section 21.
               (h)  "Prime Rate" is defined in Section 11.
               (i)  "Rent" is defined in Section 2.
               (j)  "Tenant's Prorata Share" is defined in Section 4(a).
               (k)  "Term" is defined in Section 1(b).
<PAGE>

                                     LEASE
                                     -----

          THIS LEASE (the "Lease") is made as of the 18th day of November, 1998
                                                     ----        --------    --
by and between Equinix, Inc. ("Tenant"), a Delaware corporation, and Laing
               ------------                --------------------      -----
Beaumeade, Inc. ("Landlord"), a Georgia corporation.
---------------               ---------------------

          WITNESSETH THAT, for and in consideration of the rentals herein
reserved, the mutual covenants an agreements herein set forth and other good and
valuable consideration, the receipt and adequacy of which we hereby
acknowledged, the parties hereto, intending to be legally bound, hereby covenant
and agree as follows:

          1.   GRANT/TERM/USE.  (a) Subject to the terms, conditions and
               --------------
provisions hereof, Landlord does hereby demise, lease and let unto Tenant, and
Tenant does hereby rent and take from Landlord, approximately [*] square feet
                                                              ---
of space (the "Leased Premises") located at [*], Suite C, Ashburn, Virginia
20147 (as outlined on Exhibit "A" attached hereto and made a
                      -----------
part hereof), being a portion of that certain building (the "Building") located,
or to be constructed by Landlord, at Laing at Beaumeade, on the land (the
                                     ------------------
"Land") described on Exhibit "B" attached hereto and made a part hereof,
                     -----------
together with the nonexclusive revocable license to use, in common with all
others entitled to such use, the Common Areas. The Building, Common Areas and
Land are hereinafter sometimes collectively referred to as the "Project." The
term "Common Areas" is hereby defined as those areas forming a part of the Land
and/or Building designated by Landlord for the non-exclusive, general common use
of tenants and their employees, agent, licenses, invoices and the like,
including, without limitation, all parking areas, access roads, trash pickup
and/or dumpster areas, truckways, driveways, loading docks, delivery and pick-up
passages and areas, sidewalks, ramps, landscaped and planted areas, retaining
walls, roof, exterior walls (including window frames but excluding window
panes), downspouts, lighting facilities and the like.

               (b)  This Lease shall be in full force and effect from the date
first above written. The term of this Lease (the "Term") shall be for a period
of one hundred twenty months commencing on January 15, 1999.  The term
   ------------------                      ----------------
"Commencement Date" is hereby defined as January 15, 1999.
                                         ----------------

               (c)  Tenant shall use and occupy the entire Leased Premises
during the entire Term solely as a general office and telecommunications service
center with related legal uses, and may not use all or any portion of the Leased
Premises for any other purpose whatsoever. Tenant agrees not to use the Leased
Space for mobile indoor storage. For purposes of this paragraph, "mobile indoor
storage" shall be defined as the delivery, receipt and storage of specialty
crates containing personal property of the general public. The term "mobile
indoor storage" is defined to exclude (a) traditional moving and storage
operations, (b) freight forwarding, (c) with respect to a tenant located within
the buildings described on Exhibit B, the warehousing or storage of such
tenant's own property within the premises demised to such tenant or the
warehousing or storage within the premises demised to such tenant of property
sold by such tenants to their customers or (d) indoor self storage. The term
"mobile indoor storage" shall include indoor self storage or any other type of
self storage business. In addition, but not by way of limitation, Tenant shall
not lease any portion of said buildings to those entities known as
___________________
*CONFIDENTIAL TREATMENT REQUESTED.  CONFIDENTIAL PORTION HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION.

                                       1
<PAGE>

(a) Shurgard or Shurgard to Go, (b) Public Storage or Public Storage PUD
Division, or (c) Door to Door.

          2.   RENT. Commencing on the Commencement Date, Tenant shall, and
               ----
hereby covenants and agrees to, pay to Landlord during each Lease Year of the
Term an annual base rental. ("Base Rent") as set forth on Exhibit "C" attached
                                                          -----------
hereto and made a party hereof. The term "Lease Year" is hereby defined as each
successive twelve consecutive month period beginning on the Commencement Date.
The annual Bases Rent shall be paid by Tenant in lawful money of the United
States in equal consecutive monthly installments on or before the first day of
each calendar month in advance. Base Rent for any partial month shall be
prorated at the rate of 1/30th of the monthly Base Rent per day. Tenant shall
pay to Landlord as additional rent ("Additional Rent") hereunder all charges and
other amounts required to be paid by Tenant to Landlord under this Lease,
whether or not designated herein as rent or additional rent. The term "Rent" is
hereby defined as Base Rent and Additional Rent. All Rent shall be paid by
Tenant to Landlord, without any deduction, setoff or counterclaim whatsoever, at
Landlord's address set forth at Section 28(b) hereof.

          3.   CONSTRUCTION AND ACCEPTANCE OF LEASED PREMISES. (a) Landlord
               ----------------------------------------------
shall have absolutely no obligation to provide any construction to the Leased
Premises. Tenant agrees to lease the Leased Premises in "as is", "where is"
condition. Landlord makes no warranty, either express or implied, as to the
nature of or suitability of any improvements located within the Leased Premises.
(b) Tenant agrees to furnish to Landlord all final and permanent certificates of
occupancy, permits and licenses from all applicable local authorities necessary
or required with respect to the occupation and use of the Leased Premises by
Tenant as herein contemplated;

          4.   OPERATING EXPENSES. (a) In addition to Base Rent, Tenant shall
               ------------------
pay as Additional Rent during each Lease Year of the Term, Tenant's Prorata
Share of (i) Common Area Maintenance Expenses, (ii) Real Estate Taxes and (iii)
Insurance Costs. "Tenant's Prorata Share" shall be the percentage determined by
dividing the total leasable area of the Leased Premises by the total leasable
area of the Building. On the date hereof, Tenant's Prorata share is projected to
be [*]% ([*]).
   ----  ---

               (b)  "Common Area Maintenance Expenses" shall mean any and all
costs and expenses whatsoever incurred or paid by Landlord relating to or in
connection with operating, maintaining, repairing, managing and replacing, and
providing services to, the Building, Common Areas and the Land (and all
easements, rights and appurtenances thereto), including but not limited to: (i)
costs and expenses of operating, maintaining, repairing, replacing, lighting,
painting, decorating and cleaning the Project, removing snow, ice and debris
therefrom, and policing and regulating traffic therein and thereon; (ii)
assessments or charges imposed pursuant to the Declaration of Covenants,
Conditions and Restrictions of [*], as amended, superseded or supplemented, from
                               ---
time to time (as amended, superseded or supplemented, the "Declaration"); (iii)
costs and expenses of supplies and equipment and maintenance and service
contracts; (iv) costs and expenses of replacing, repairing, repaving and
striping pavements, curbs, walkways, parking areas, driveways and truckways,
drainage and lighting, facilities and other Common Areas amenities; (v) all
utility expenses, costs and charges including water and sewer charges; (vi)
contributions with respect

_____________________

*CONFIDENTIAL TREATMENT REQUESTED.  CONFIDENTIAL PORTION HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION.

                                       2
<PAGE>

to, and costs and expenses of maintenance, repair and replacement of, on and
off-site utility systems serving the Project; (vii) all landscaping (including,
but not limited to, maintenance and new and replacement plantings); (viii)
consulting and management fees not to exceed four percent (4%) of actual
expenses and all other fees, charges and costs of or by contractors and agents
employed by Landlord; (xi) commissions, wages, salaries and other labor costs
and all persons engaged in such maintenance, operation, repair, management and
the like (including, but not limited to, taxes, insurance, medical and other
benefits); (xii) any capital expenditures incurred either to reduce Common Area
Maintenance Expenses, to comply with any governmental law, order, requirement or
regulation or to replace existing structures, equipment and machinery, such
capital costs to be amortized over such reasonable period as Landlord shall
determine, together with interest at the rate paid by Landlord on any funds
borrowed for such expenditures; (xiii) legal and accounting fees and charges
(except as otherwise provided hereinafter); and (xiv) any other expenses or
charges included in Common Area Maintenance Expenses with respect to comparable
office-warehouse buildings in the Ashburn, Virginia area. Common Area
                                  -----------------
Maintenance Expenses shall not incur any of the following: ground rent; interest
and amortization of funds surrounded by Landlord (except as specifically
provided above); leasing commissions and advertising, legal, and space planning
expenses incurred in procuring tenants for the Building; and salaries, wages, or
other compensation paid to officers or executives of Landlord in their
capabilities as officers and executives. Landlord agrees that any and all cost
and expenses for such above-mentioned repairs, improvements, maintenance, and
service contracts, or any work commenced by any trade or contractor in excess of
$5,000.00 per event, must be competitively bid with award of such contract or
bid to the lowest qualified bidder.

          Notwithstanding anything to the contrary contained in this Lease, it
is expressly understood that Common Area Expenses do not include (i) amounts due
under loans encumbering the Leased Premises, or payments of rent under ground
leases of the Leased Premises, (ii) depreciation of the Building or of any
building service equipment, (iii) brokerage commissions in connection with
leasing all or a portion of the Building or Land, (iv) attorneys' fees,
accounting costs and other costs directly related to leasing space in the
Building or Land, except in the context of reviewing, negotiating, and/or
drafting of any assignment or sublease proposed by any Tenant, (v) physical
damage to property caused by the active negligence or willful misconduct of
Landlord or its employees, agents or contractors, (vi) all cost incurred by
Landlord to investigate remedial Hazardous Waste or Hazardous Materials to the
extent Landlord is not otherwise indemnified against such costs by Tenant
pursuant to this Lease, (vii) costs incurred by Landlord for repairing damage
which costs are actually recovered for insurance proceeds (or if Landlord fails
to carry insurance which it is required to carry under this Lease, the costs
that would have been recovered from insurance proceeds had Landlord carried such
insurance) or condemnation awards and (viii) Landlord's overhead and
administrative costs to the extent exceeding management fee charges permitted
pursuant to the provisions of this Paragraph.

               (c)  "Real Estate Taxes" shall mean any and all real estate
taxes, assessments, water and sewer tests and charges, liens, charges, levies
and other governmental impositions and charges of every kind and nature
whatsoever, general or special, ordinary or extraordinary, foreseen or
unforeseen, assessed, levied or imposed upon, or arising in connection with, the
fixtures, machinery, equipment or systems, in, upon or used in connection with
the operation of the Building or the Land; including, but not limited to,
metropolitan district water

                                       3
<PAGE>

and sewer charges, any assessments for public facilities or improvements for the
areas in which the Project is located and taxes, assessments, charges and the
like upon this Lease or any rents from the use, occupancy or possession of the
Project. If, because of any change in the method of taxation of real estate or
because of the enactment of any new tax by federal, state, county or local
government, any other tax or assessment is imposed upon Landlord, or the rents
or income derived from the Project, in substitution for, or in lieu of, or in
addition to, any tax or assessment which would otherwise be included within Real
Estate Taxes hereunder. Real Estate Taxes shall also include all expenses
incurred by Landlord in obtaining or attempting to obtain a reduction of Real
Estate Taxes, including, but not limited to legal fees. Tenant may in good faith
contest or appeal the amount of any personal taxes or Real Estate Tax or
assessment at Tenant's expense directly to the taxing authority, but in such
event, Tenant shall indemnify Landlord against liability therefor. Landlord will
reasonably cooperate at Tenant's expense in joining such appeal if required by
the taxing authority.

Notwithstanding the foregoing, the term "Real Estate Taxes" shall not include
estate, inheritance, transfer, gift or franchise taxes of Landlord or any tax or
governmental charge based upon the net or gross income or receipts of the
Landlord except for any tax on gross income or receipts of the Landlord except
for any tax or gross income or receipts applied solely to rents from real
property.

               (d)  "Insurance Costs" shall mean all insurance expenses incurred
by Landlord relating to all insurance of whatsoever nature kept or caused to be
kept by Landlord in connection with the ownership, operation, use or management
of the Project, including, but not limited to, any and all policies of fire and
extended coverage insurance (including, without limitation, extended and broad
form coverage risks, mud slide, land subsidence, flood and earthquake), rent and
business interruption insurance, boiler insurance, sprinkler insurance,
comprehensive general public liability insurance (including, without limitation,
an all-risk liability endorsement) and excess liability insurance.

               (e)  Tenant's Prorata Share of such Common Area Maintenance
Expenses, Real Estate Taxes and Insurance Costs for each calendar year shall be
paid in monthly installments in advance on the first day of each calendar month,
commencing with the Commencement Date, in amounts reasonably estimated by
Landlord to be "Tenant's Prorata Share thereof based upon, among other things,
actual expenses, if any, incurred with respect to the immediately preceding
calendar year. Such estimates may be revised, at any time and from time to time
during such calendar year (but in no event more often than 4 times during any
calendar year), in which event Tenant shall immediately commence making monthly
payments hereunder pursuant to such new statement and, in addition, with the
next monthly payment of Base Rent, pay to Landlord the difference between
monthly payments for the preceding months based on such revised statement and
the amount actually paid by Tenant with respect to such preceding months; it
being understood, acknowledged and agreed, however, that as to Common Area
Maintenance Expenses, Real Estate Taxes and Insurance Costs payable or paid in
advance by Landlord, Tenant covenants and agrees to pay Tenant's Prorata Share
thereof within 10 days after receipt of Landlord's written demand therefor.
Within 120 days following the expiration of such calendar year, Landlord shall
furnish to Tenant a written statement showing the actual amount of Tenant's
Prorata share of Common Area Maintenance Costs, Real Estate Taxes and Insurance
Costs for such calendar year and the payments thereto made by Tenant and known
as

                                       4
<PAGE>

the "Year End Report." If the payments made by Tenant shall exceed Tenant's
actual share of such costs, Tenant shall, provided Tenant is not in default
hereunder, be entitled to a credit for such excess against payments next
thereafter due to Landlord pursuant to this Section 4; it being understood,
acknowledged and agreed, however, that if Tenant is indebted to Landlord
hereunder in any amount for any reason whatsoever, Landlord may deduct such
amount owned from such overpayment and if on or after termination of this Lease,
the overpayment will be returned to Tenant within thirty (30) days after the
Year end Report referenced in the proceeding sentence. If Tenant's share of such
costs shall exceed the payments made by Tenant, Tenant shall pay to Landlord the
deficiency within 30 days after Landlord shall submit the aforesaid statement to
Tenant. Tenant's obligations pursuant to this Section 5 shall survive the
expiration or sooner termination of this Lease. Landlord's failure to provide
the statement called for above in this Section 5(e) shall not release or relieve
Tenant of Tenant's obligations under this Section 5 or elsewhere in this Lease.

          5.   SECURITY DEPOSIT. Upon the execution of this Lease, Tenant shall
               ----------------
pay to Landlord $[*] ("the Deposit") as security for the faithful performance by
Tenant of all of the terms, covenants, and conditions of this Lease (including,
but not limited to, the payment of Rent). The Security Deposit shall be given in
cash in the minimum amount of $[*]. In the event Tenant pays to Landlord the
full amount of the Security Deposit in the form of cash, Tenant may elect to
convert $[*] of the Security Deposit into the form of an unconditional,
irrevocable letter of credit in the name of the Landlord and payable upon
presentation at a federally-insured national bank in the Commonwealth of
Virginia, in such form and content as landlord shall reasonably require, or in
such form as Landlord may approve, or in a combination of the foregoing. Upon
Landlord's receipt of an approved letter of credit, Landlord shall refund to
Tenant the full amount of the letter of credit up to a maximum amount of $[*]
within thirty (30) days. Landlord may, but is not obligated to, without waiving
or satisfying such Event of Default, or waiving or limiting any other rights or
remedies of Landlord or limiting Tenant's liability to Landlord, apply all or
any portion of the Deposit on account of any Event of Default hereunder, as well
as on account of any expense incurred or paid, or damages suffered, by Landlord
in connection with such failure, and Tenant, within ten (10) days following
receipt of written notice of demand, shall replenish the amount necessary to
restore the full Deposit. Landlord may commingle the Deposit with any other
accounts that Landlord holds, and Landlord shall not be obligated to pay any
interest accrued on the Deposit to Tenant. In the event of a sale or other
transfer of the Project (or Landlord's interest therein), Landlord shall have
the right to transfer to such purchaser or other party the Deposit and Landlord
thereupon shall be released by Tenant from all liability for the return thereof,
and Tenant agrees to look to the new landlord solely for the return thereof.

          6.   UTILITIES.  Tenant shall be solely responsible for, and promptly
               ---------
pay as and when due, all changes and assessments for heat, gas, electricity,
telephone and other utilities used, consumed or provided to or on the Leased
Premises and shall, at Tenant's sole cost and expense, arrange with the
appropriate utility companies for the provision, augmentation or modification of
such utilities to the Leased Premises. Notwithstanding anything herein to the
contrary, Landlord shall not be liable in any respect for any damages
whatsoever, whether to or with respect to person, property, Tenant's business or
otherwise, for interruption in, or stoppage, suspension or curtailment of, any
utility service or system (whether caused by or arising out of Landlord's need
to make repairs or any other reason whatsoever), nor shall the same

_____________________

*CONFIDENTIAL TREATMENT REQUESTED.  CONFIDENTIAL PORTION HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION.

                                       5
<PAGE>

(a) constitute a constructive eviction or interference or disturbance with
Tenant's use, possession or enjoyment of the Leased Premises, (b) constitute
grounds for abatement, reduction or rebate, in whole or in part, of Rent or any
other sum payable by Tenant hereunder, or (c) release or relieve Tenant of or
from any Tenant's obligations hereunder. In the event landlord shall elect, or
be required by governmental authorities, to install in the Leased Premises
individual meters or other devices to measure any or all of the utilities
consumed in the Leased Premises, Tenant shall pay to Landlord the charges
incurred for such meters and the installation thereof in the Leased Premises. If
any such utilities are not separately measured, Tenant shall pay to Landlord,
within thirty (30) days after Tenant's receipt of Landlord's written demand
therefor, Tenant's allocable share of such utilities as reasonably determined by
Landlord.

          7.   MAINTENANCE AND REPAIR BY LANDLORD.  Landlord shall, subject to
               ----------------------------------
the provisions of Sections 14 and 17 hereof and so long as Tenant is not in
default hereunder, keep the foundation, the exterior walls (except plate glass
windows, doors, door closure devices, window and door frames, molding, locks and
hardware and painting or other treatment of interior walls, all of which shall
be Tenant's responsibility to maintain, replace and repair) and the roof of the
Leased Premises in good repair, ordinary wear and tear excepted. Any repairs
required to be made by Landlord under this Lease which are occasioned by the
act, omission or negligence of Tenant, or Tenant's agents, employees,
subtenants, licensees, invitees, visitors, contractors, servants, customers or
others acting, through or under Tenant or for or on behalf of Tenant
(collectively, "Tenant's Agents"), shall be paid for by Tenant, at any time and
from time to time, upon receipt of Landlord's demand to the extent not covered
by any net insurance proceeds paid or payable to Landlord therefor. In the event
that the Leased Premises should become in need of repairs required to be made by
Landlord hereunder, Tenant shall immediately give written notice thereof to
Landlord and Landlord shall not be obligated in any way to commence any such
repairs until a reasonable time shall have elapsed after Landlord's receipt of
such written notice. Notwithstanding the above, because of the sensitive nature
of Tenant's business and equipment, if Landlord does not repair roof leaks
within five (5) business days of written notice of such leaks from Tenant, then
Tenant may make the repairs and shall invoice Landlord for the reasonable cost
of such repairs, which Landlord will pay to Tenant within thirty (30) days of
receipt of the invoice and reasonably substantial evidence of completion of the
repairs. Notwithstanding anything contained herein, Tenant shall use the roof
manufacturers' approved roof installation and repairs contractors only to
perform any repairs.

          8.   CONTROL.  The Common Areas shall be subject to Landlord's
               -------
reasonable management and control and shall be operated and maintained in such
manner as Landlord, in its reasonable discretion, shall determine. Without
limiting the generality of the immediately preceding sentence, Landlord reserves
the exclusive right to install, construct, remove, maintain and operate lighting
systems, facilities, improvements, buildings, equipment and signs on, in or to
all parts of the Common Areas and the Building; increase, reduce or change the
number, size, height, layout, or locations of buildings, walks, driveways and
truckways, parking areas and/or Common Areas now or hereafter forming a part of
the Project; make alterations or additions to the Building; close temporarily
all or any portion of the Common Areas to make repairs, changes or to avoid
public dedication; grant easements, or replat or subdivide or make such other
changes to the Land, as Landlord shall deem necessary; place, relocate and
operate utility lines through, over or under the Leased Premises necessary to
serve

                                       6
<PAGE>

other portions of the Building; and use or permit the use of all or any portion
of the roof of the Building.

          9.   OCCUPANCY BY TENANT.  (a) Tenant covenants and agrees to, at its
               -------------------
sole cost and expense, observe and comply with the provisions of (i) all matters
of record (including, but not limited to, the Declaration and all Mortgages),
(ii) all building, zoning, fire and other governmental laws, ordinances,
regulations, requirements, codes, certificates of occupancy and rules, (iii) the
orders and directives (pursuant to law) of public officials applicable to the
Leased Premises and/or the balance of the Project or the conduct of the business
in the Leased Premises by Tenant, (iv) all rules, regulations, orders and
requirements of carriers of insurance insuring the Project; and (v) the Rules
and Regulations, attached hereto as Exhibit "F" and made a part hereof, and any
                                    -----------
additions thereto and modifications thereof as adopted by Landlord from time to
time.  Notwithstanding anything herein to the contrary, Tenant, at its sole cost
and expense, shall make any and all repairs, alterations, additions and
improvements of any nature whatsoever required by any governmental authority by
reason of Tenant's use or occupancy of the Leased Premises.

               (b)  Tenant shall not keep or allow to be kept anything within
the Leased Premises or use or permit the use of the Leased Premises for any
purpose or in any manner, which causes or might cause an increase in the
insurance premium cost of, or invalidate or breach or conflict with, any
insurance policy carried on all or any part of the Project, or cause any
existing or prospective insurer to refuse to issue any insurance policy with
respect to all or any portion of the Project or the Landlord's business, or
cerate any risk of fire or other hazard. Notwithstanding the above, Landlord
acknowledges Tenant's use of Equipment and Tenant's Generator which may cause an
increase in Landlord's insurance premium cost which increase related to Tenant's
use of Equipment and Tenant's Generator shall be paid as Additional Rent, upon
receipt of Landlord's demand therefor, any such increased premium cost due to or
associated with Tenant's unique use or occupation of the Leased Premises or
Tenant's storage of goods. Tenant, at its sole cost and expense, shall comply
with all rules, regulations, orders and requirements of the American Insurance
Association (formerly the National Board of Fire Underwriters) and of any other
similar body having jurisdiction over the Project).

          10.  INSURANCE; INDEMNITY.  (a) Tenant shall, at Tenant's sole cost
               --------------------
and expense, carry and keep in force at all times during the Term (i) a policy
of comprehensive general public liability insurance, together with a contractual
liability endorsement, with limits of not less than $1,000,000 in respect of
bodily injury to or death of any one person, an amount not less than $2,000,000
in respect to bodily injuries or death(s) occurring in any one occurrence and an
amount not less than $500,000 in respect of property damaged or destroyed; (ii)
fire and extended coverage insurance covering the full replacement cost of all
alterations, additions, partitions, improvements, equipment, furniture, fixtures
and inventory made or placed by Tenant in the Lease Premises against "all-risk"
of physical loss; (iii) worker's compensations insurance with limits not less
than that required by law; and (iv) such additional amounts of insurance and
additional types of coverage as Landlord may reasonably request from time to
time. Tenant's liability hereunder shall not be limited to the insurance
coverage maintained, or required to be maintained pursuant hereto by Tenant. All
such policies shall be with companies licensed to do business in the state in
which the Land is located, and from a responsible company satisfactory to
Landlord, and contain a waiver of subrogation as contemplates in Section 10(d)
below.

                                       7
<PAGE>

Landlord, and Landlord's Mortgagee if requested by Landlord, shall be named as
additional insurers under such insurance policies. All such insurance policies
shall be primary and non-contributing with any insurance carried by the
Landlord, shall be written on an "occurrence" basis and not on a "claims-made"
basis, and shall contain endorsements requiring 45 days' notice to Landlord
prior to any cancellation or any reduction in amount of coverage. Tenant shall
deliver to Landlord as a condition precedent to Tenant's taking occupancy of the
Leased Premises (but not to Tenant's obligation to pay Rent), A complete
duplicate copy of all such policies maintained by Tenant, and shall also deliver
copies thereof to Landlord not less than 30 days prior to the expiration date of
each such policy. Tenant's failure to comply with any of the requirements of
this Section 10(a) shall be an Event of Default.

               (b)  Neither Landlord, nor any of the Landlord's partners,
officers, members, directors, agents or employees, shall, to the extent
permitted by law, have any liability to Tenant, or to Tenant's Agents, for any
damage, injury, loss or claim based on or arising out of any cause whatsoever,
including, without limitation, the following; repair to any portion of the
Leased Premises, Building or Common Areas; interruption in the use of the Leased
Premises or any equipment therein; any accident or damage resulting from any use
or operation by Landlord, Tenant or any person or entity of heating, cooling,
electrical, sewerage or plumbing equipment or apparatuses; termination of this
Lease by Landlord for damage to the Lease Premises or the Building; fire,
robbery, theft, vandalism, mysterious disappearance or any other casualty;
actions of any other tenant of the Building or of any other person or entity;
failure or inability to furnish any service specified in this Lease; and leakage
in any part of the Leased Premises or the Building from water, rain, ice or snow
that may leak into, or flow from, any part of the Leased Premises or the
Building, or from drains, pipes or plumbing fixtures in the Leased Premises or
the Building. Notwithstanding the foregoing, Landlord shall not except as set
forth in Section 10(d) below or elsewhere herein, be released from liability to
Tenant for any injury caused by Landlord's willful misconduct or gross
negligence. In no event, however, shall Landlord have any liability to Tenant on
account of any claims for the interruption of or loss to Tenant's business or
for any indirect damages or consequential losses.

               (c)  Tenant shall, to the extent permitted by law, reimburse
Landlord for, and shall defend (upon Landlord's request), indemnify and hold
Landlord, its partners, officers, members, directors, employees and agents
harmless from and against, any and all costs, damages, claims, liabilities,
expenses (including, but not limited to, attorneys' fees and court and
litigation costs), losses, demands, actions, causes of action, judgements,
proceedings and obligations of any nature whatsoever suffered by or claimed
against Landlord, directly or indirectly, resulting from, based on or arising
out of, in whole or in part, (i) the possession, use and/or occupancy of the
Leased Premises or the business conducted therein or therefrom (whether or not
damage or loss occurs in or on the Leased Premises, the Common Areas or
elsewhere); (ii) any act or omission of Tenant, or any of Tenant's Agents;
and/or (iii) any breach of the provisions of Section 28(u) hereof). The
provisions of Section 10(b) above and this Section 10(e) shall survive the
expiration or sooner termination of this Lease with respect to any claims,
liabilities and the like attributable to acts, omissions, occurrences and/or
conditions existing or occurring prior to such expiration or termination.

               (d)  Without limiting the provisions of Section 10(b) above or
any other provisions hereof as to Landlord, Landlord and Tenant each hereby
release the other from

                                       8
<PAGE>

any and all liability or responsibility to the other or any one claiming through
or under them, by way of subrogation or otherwise, from or with respect to any
loss or damage to property caused by fire or any other perils insured under
policies of insurance covering such property (but only to the extent of the
insurance proceeds payable under such policies), even if such loss or damage is
attributable to the fault or negligence of the other party, or anyone for whom
such party may be responsible, including any other tenants or occupants of the
Building. The foregoing notwithstanding, this mutual release shall be applicable
and in force and effect only to the extent lawful at the time any claim is made,
and in any event only with respect to loss or damage occurring during such times
as the releasor's policies shall contain a clause or endorsement providing that
any such release shall not adversely affect or impair said policies or prejudice
the right of the releasor to recover thereunder. Landlord and Tenant shall
request their respective insurance carriers to include in its policies such a
clause or endorsement. If additional cost shall be charged therefor, the party
responsible for procuring such insurance shall pay such additional costs. If
Tenant fails to obtain or maintain any such property insurance policies as
required hereunder, Tenant's release of Landlord shall remain and be deemed in
full force and effect as to the coverage thereof as if such policies, and an
insurer's waiver of subrogation endorsement, were obtained and in full force and
effect; provided, however, that nothing herein shall excuse Tenant's failure to
maintain any insurance required hereunder or constitute a waiver or limitation
of any other rights and remedies of Landlord in the event Tenant fails to
maintain any insurance.

          11.  REPAIRS.  Except as to Landlord's obligations pursuant to
               -------
Sections 7, 14 and 17 hereof, and in addition to all other repair, maintenance
and replacement obligations of Tenant act forth herein, Tenant agrees to
maintain the Leased Premises at all times during the Term in a neat, clean and
sanitary condition and in good order and repair and shall make all needed
repairs and replacements thereto. Such maintenance, replacement and repair shall
be at the sole cost of Tenant and shall include, but not be limited to, the
maintenance, replacement and repair of floor coverings, ceilings and walls,
front and rear doors, all glass on the Leased Premises, all plumbing units,
pipes and connections, and all heating, ventilating and air conditioning
equipment and systems.

          12.  TENANT'S PROPERTY. Furnishings, equipment, machinery and trade
               -----------------
fixtures that can be installed by Tenant with or without drilling, cutting or
otherwise defacing the Leased Premises (collectively, "Tenant's Personal
Property") may be installed by Tenant on the Leased Premises and shall be the
property of Tenant. On the expiration of this Lease, if Tenant is not in default
hereunder, Tenant may remove any such property (and shall remove any such
property if directed by Landlord) and shall repair any damage caused by such
removal and reimburse Landlord for Landlord's cost of so repairing the Lease
Premises. If Tenant fails to remove the Tenant's Personal Property as required
under this Lease, Landlord may do so and Landlord shall not be liable for any
loss or damage to such property of Tenant which may occur during Landlord's
removal thereof, or Landlord may treat such property as abandoned and remove and
keep the same, and Tenant shall pay the entire cost of such removal to
Landlord's written demand therefor. Tenant agrees to pay all taxes on Tenant's
Personal Property and if such taxes are levied against Landlord, or the assessed
valued of the Project is increased by inclusion of a value placed on such
property, Tenant shall pay such taxes to Landlord on demand if Landlord is
required to pay such taxes (or reimburse Landlord on demand if Landlord pays
such taxes). Notwithstanding anything herein to the contrary, any property
placed by Tenant in or about the Leased Premises or the Building shall be at the
sole risk of Tenant, and Landlord

                                       9
<PAGE>

shall not in any manner be responsible therefor. The provisions of this Section
12 shall survive the expiration or sooner termination of this Lease.
Notwithstanding the above, Tenant shall have the right to install equipment and
trade fixtures in the manner and extent set forth in Exhibit "K" hereto.

          13.  IMPROVEMENTS AND ALTERATIONS BY TENANT:  (a) Without Landlord's
               --------------------------------------
prior written approval (which may be withheld in Landlord's reasonable
discretion), Tenant may not make or permit any additions, improvements,
alterations, substitutions, replacements or modifications, structural or
otherwise, to the Leased Premises (including, but not limited to, all
electrical, heating, ventilating, air conditioning, plumbing or mechanical
systems within the Leased Premises) (collectively, the "Alterations"), or attach
any machines, equipment and fixtures (other than the Tenant's Personal Property
provided the same are installed at no cost or expense to Landlord), which may be
made or installed by either party upon the Leased Premises shall be and remain
the property of Landlord and shall remain upon and be surrendered with the
Leased Premises, unless Landlord requests their removal at such time that the
Landlord approves and gives consent, in which event Tenant shall remove the same
and restore the Leased Premises to its original condition at Tenant's sole cost
and expense and Tenant shall pay the entire cost of such removal to Landlord
upon Tenant's receipt of Landlord's written demand therefor. If Tenant fails to
remove such Alterations and property and restore the Leased Premises as
aforesaid, Landlord may do so and Tenant shall pay the entire cost thereof to
Landlord as Additional Rent within 10 days after Tenant's receipt of Landlord's
written demand therefor. Any such Alterations performed by Tenant shall be done,
at Tenant's sole cost and expense, in strict conformity with any plans and
specifications approved by Landlord prior to Tenant commencing such work and in
such a manner to minimize interference with other construction in the Building
or on the Land in progress and with the use or enjoyment of all or any portion
of the balance of the Project by any other tenants. All work performed shall be
done in a good and workmanlike manner by contractors approved by Landlord and
with materials of comparable quality, value, utility and appearance as
originally installed in the Leased Premises. Landlord's consent to or approval
of and Alterations (or the plans and specifications therefor) shall not
constitute a representation or warrant by Landlord, nor Landlord's acceptance,
that the same comply with (a) sound architectural and/or engineering practices,
or (b) applicable laws, regulations, rules, codes, ordinances and other
governmental requirements, and Tenant shall be solely responsible for enduring
all compliance with the matters referred to in (a) and (b) above in this
sentence. In each instance in which Landlord's approval is requested or required
hereunder, Tenant shall reimburse Landlord as Additional Rent, upon receipt of
written demand therefor, for all out-of-pocket cost and expenses incurred or
paid by Landlord during such review process.

               (b)  Nothing contained in this Lease shall be deemed or construed
in any way as constituting the consent or request of, or order or authorization
by, Landlord, express or implied, by inference or otherwise, to any contractor,
subcontractor, laborer or materialman for the performance of any labor, or the
furnishing of any materials, that would give rise to the filing of any lien
against the Leased Premises, or the Project, or any part thereof. Landlord shall
have the right to post and keep posted on the Leased Premises any notices that
may be provided by law or which Landlord may deem to be proper for the
protection of Landlord, the Leased Premises and the Project from such lien(s).

                                       10
<PAGE>

          14.  CASUALTY.  (a) If the Leased Premises is destroyed or damaged by
               --------
fire, earthquake or other casualty (collectively, a "Casualty") and Landlord
does not elect to terminate this Lease as herein provided, Landlord shall,
subject to the terms hereof and obtaining all necessary public approvals and
solely to the extent of net insurance proceeds actually received by Landlord
(and free of all claims by Mortgagees and others and all expenses), and provided
such Casualty is not due to the negligence or wrongful acts of Tenant, or any of
Tenant's Agents (subject, however, to subrogation rights as set forth in
Paragraph 10(d)), proceed in a reasonable manner to rebuild and restore the
Leased Premises or such part thereof as may be destroyed or damaged to as near
its former conditions as circumstances will reasonably permit. During the period
of such rebuilding and restoration, Base Rent shall, provided such Casualty is
not due to the negligence or other wrongful acts of Tenant, or any of Tenant's
Agents, be abated in the same ratio as the square footage of the portion of the
Leased Premises rendered untenantable, to the extent, and so long as, however,
the Leased Premises remains untenantable. If, however, Landlord shall reasonably
determine that such destruction or damage cannot be repaired within one hundred
eighty (180) days after the date of such Casualty, either Landlord or Tenant may
elect to terminate this Lease by giving written notice of such election to
Tenant within 90 days after the date of such Casualty, in which event this Lease
and the tenancy created hereunder shall terminate as of the date of such notice
and Rent shall (except to the extent Tenant has continued to make use of all or
any of the Leased Premises) be abated as of such date of such Casualty. Tenant
agrees to give notice to Landlord of any Casualty occurring in, on, or about the
Leased Premises within 24 hours from the occurrence thereof.

               (b)  If Landlord is required to repair the Leased Premises under
the provisions of this Section 14, Landlord's obligation shall be limited to the
Landlord's Work, excluding, in any event, all alterations, fixtures or signs
installed by Tenant and all floor coverings, furniture, equipment and
decorations or other Tenant's Personal Property. Tenant, at Tenant's expense,
shall promptly perform all repairs and restoration not required to be done by
Landlord and shall promptly re-enter the Leased Premises to perform such work.

               (c)  Anything contained herein to the contrary notwithstanding,
if (i) the proceeds of Landlord's insurance (recovered or recoverable) as a
result of any damage to the Leased Premises by any Casualty (exclusive of rent
insurance) shall be insufficient to pay fully for the cost of repair of the
Leased Premises, (ii) the Leased Premised shall be damaged by a Casualty which
is not covered by Landlord's insurance, or (iii) the Building is more than fifty
percent (50%) damaged by fire or other casualty (although the Leased Premises
may not be affected) that Landlord decides in Landlord's sole and absolute
discretion not to rebuild or construct the Building, Landlord shall have the
right to terminate this Lease by giving written notice of such termination to
Tenant within 90 days after the date of such Casualty in which event this Lease
and the tenancy created hereunder shall terminate as of the date of such notice
and Rent shall (except to the extent Tenant has continued to make use of all or
any of the Leased Premises) be abated as of the date of such Casualty.
Notwithstanding the above, as to the event of (i) or (ii) above, if Landlord
elects to terminate this Lease, the Tenant may prevent this termination if,
within fifteen (15) days of the receipt of Landlord's notice of its election to
terminate, that Tenant agrees at its sole expense to make the repairs and
restoration work not covered by insurance and to continue its occupancy and
tenancy under the Lease. In the event the Rent shall only abate to the date
Tenant elects to restore the Leased Premises at its expense.

                                       11
<PAGE>

          15.  SUBLETTING AND ASSIGNMENT.  Without the prior written consent of
               -------------------------
Landlord in each instance, which consent may not be unreasonably withheld in
Landlord's reasonable discretion. Tenant shall not directly or indirectly (in
one or more transaction), voluntarily, involuntarily or by operation of law,
assign transfer, pledge, mortgage or otherwise hypothecate or encumber all or
any portion of Tenant's legal or equitable interest in this Lease or in the
Leased Premises, nor sublet all or any portion of the Leased Premises, nor enter
into any management, license, concession or other contract or agreement which
provides for a direct or indirect transfer of operating control over the
business operated in, or the use of occupancy of, the Leased Premises. Any
direct or indirect transfer, sale, pledge or other disposition, in a single
transaction or cumulatively during the Term, of at least 25% of the ownership
interests in Tenant (or any lesser percentage if sufficient to transfer voting
control (if Tenant is a corporation) or management control (if Tenant is a
partnerships)), as well as of any general partnership interest in Tenant if
Tenant is a limited partnership, shall each be deemed an assignment of this
Lease; provided, however, that this limitation shall not apply with respect to
the transfer of voting stock in a corporation, all the outstanding voting stock
of which is listed on a national securities exchange as defined in the
Securities Exchange Act of 1934. Any assignment, sublease or other such transfer
without Landlord's prior written consent shall be voidable by Landlord and
Landlord's election, shall constitute an Event of Default hereunder. Consent of
Landlord to one or more assignments, subletting or encumbering of this Lease or
the Leased Premises shall not operate as a waiver of Landlord's rights (and the
requirement of Landlord's consent), or be deemed Landlord's consent, with
respect to any subsequent assignment, subletting or encumbering. Notwithstanding
any assignment or subletting, Tenant, and each and every guarantor of this Lease
and Tenant's obligations hereunder, shall at all times remain fully and
primarily responsible and liable for the payment of all Rent and other monetary
obligations herein specified and for the compliance with and performance of all
of the Tenant's other obligations under this Lease. Landlord's consent, if any,
to any assignment or sublease will not be effective unless and until (a)
Landlord receives a fully executed copy of the assignment or sublease agreement,
(b) in the case of an assignment, Tenant delivers to Landlord an assumption of
liability agreement in form satisfactory to Landlord including as assumption of
the assignee of all of the obligations of Tenant and the assignee's ratification
of, and agreement to be bound by, all of the terms, conditions and provisions of
this Lease, and (c) Landlord is fully reimbursed by Tenant of Landlord's costs
and fees, including, but not limited to, attorney's fees, incurred in processing
and evaluating any requests for assignment or subletting by Tenant.
Notwithstanding anything to the contrary in this paragraph 15, Tenant may,
without Landlord's prior consent and without Landlord's participation in any
proceeds, sublet the Premises or assign the lease to: (i) a subsidiary,
affiliate, division or corporation controlling, controlled by or under common
control with Tenant; (ii) a successor corporation related to Tenant, by merger,
consolidation, non bankruptcy reorganization, or governmental action; or (iii) a
purchaser of substantially all of Tenant's assets located in the Leased
Premises. For the purpose of this Lease, sale of Tenant's capital stock through
any public exchange shall not be deemed an assignment, subletting or any other
transfer of the Lease or the Leased Premises.

          16.  LIENS.  Tenant shall keep the Project free and clear of and from
               -----
any and all liens or encumbrances arising out of any work performed, materials
furnished or obligations incurred by Tenant or otherwise arising out of Tenant's
use or occupancy of the Leased Premises. An Event of Default shall exist of at
any time any such lien or encumbrance is filed, claimed or recorded against, or
otherwise exists with respect to, the Leased Premises or the

                                       12
<PAGE>

Building and Tenant shall fail to have said lien or encumbrance discharged of
record, or bonded over so as to forever remove such lien or encumbrance as an
encumbrance upon the Project, within 15 days (or if American Institute of
Architects contract form, thirty (30) days) from the date such lien or
encumbrance is filed, claimed or recorded against, or otherwise exists with
respect to, the Project. Tenant shall promptly notify Landlord if Tenant learns
that a lien has been, is about to or might be filed against the Premises.

          17.  CONDEMNATION.  (a) In the event of a taking by any public or
               ------------
quasi-public authority under the power of eminent domain, condemnation or
expropriation, or in the event of a conveyance in lieu thereof, (all of which
events are herein collectively referred to as a "Taking"), of the whole of the
Leased Premises, then this Lease shall terminate effective upon the date title
to the Leased Premises vests in the condemning authority and Base Rent and
Additional Rent shall be adjusted as of such date.

               (b)  In the event of a Taking of less than 25% of the Leased
Premises, then this Lease shall terminate only as to the part taken as of the
date title vests in the condemning authority. In the event of a Taking of more
than 25% (but less than all) of the Leased Premises, then Landlord shall have
the right to terminate this Lease by written notice given to Tenant effective
within 60 days after the date title vests in the condemning authority.

               (c)  If the nature, location or extent of any Taking affecting
the Building (whether or not including the Leased Premises) or the Land is such
that Landlord elects in Landlord's sole and absolute discretion to demolish all
or a portion of the Building, then Landlord may terminate the Lease by giving at
least 60 days' written notice of termination to Tenant at any time after such
Taking. This Lease shall terminate on the date specified in such notice, and
monthly Base Rent and Additional Rent shall be adjusted to such date.

               (d)  If there shall be a Taking, and this Lease is not terminated
as set forth above in this Section 17, then this Lease shall continue in full
force and proportion to the Base Rent shall be reduced to be that sum which
bears the same proportion to the Base Rent in effect immediately prior to such
Taking as the leasable area of the Leased Premises remaining after such Taking
bears to the leasable area of the Leased Premises immediately preceding such
Taking. Following receipt of the compensation awarded or payment made for such
Taking, Landlord shall commence to make all necessary repairs or alterations to
restore that portion of the Leased Premises remaining to as near its former
condition as the circumstances will reasonably permit; provided, however, that
Landlord shall in no event be required to spend for such repairs and alterations
any sums in excess of the amount of the compensation or payment for such Taking
actually received by Landlord (and free of all claims by Mortgagees and others)
which is attributable to the part of Leased Premises taken (excluding the
proportionate part thereof attributable to the then current market value of the
Project taken) less the cost of collecting such compensation or payment and
provided further that Landlord's obligation shall be limited to the Landlord's
Work and Landlord shall have no obligation to repair, restore or replace any
alterations, fixtures or signs made or installed by Tenant or any floor
coverings, furniture, equipment or decorations or other Tenant's Personal
Property (the repair, restoration and replacement of which shall be the sole
obligation of, and be promptly performed by, Tenant).

                                       13
<PAGE>

               (e)  Tenant shall have no claim against Landlord or the
condemning authority for any portion of the amount of the condemnation award or
settlement that may be claimed as damages by Tenant as a result of such Taking
or for the value of any unexpired Term, and all condemnation awards and similar
payments shall be paid and belong to Landlord. Notwithstanding the foregoing,
Tenant may make a separate claim against the condemning authority for a separate
award or payment for the value of Tenant's trade fixtures and for relocation
costs, provided such awards do not reduce Landlord's award.

          18.  PARKING.  Tenant agrees not to overburden the parking areas and
               -------
facilities and agrees to cooperate with Landlord and other tenants in the use of
parking areas and facilities, and, in any event, shall use such parking areas
and facilities in accordance with the terms and conditions of the Declaration
and such rules and regulations promulgated by Landlord. Tenant acknowledges and
agree that, except as set forth in the immediately following sentence, all
parking areas and facilities shall be for the non-exclusive use of all tenants
in the Building, their employees, invitees and others; provided, however, that
Tenant, its employees, invitees and customers, shall not have the right to use
any parking spaces or facilities which are reserved for handicapped parking
(unless handicapped, but subject to the rights of other handicapped persons) or
other tenants or which are otherwise set aside or reserved by Landlord. Landlord
hereby agrees to designate 54 parking spaces in the immediate vicinity of the
Leased Premises for the exclusive use of Tenant, its employers and invitees; it
being understood, acknowledged and agreed, however, that Landlord shall have no
obligation whatsoever to monitor or police the use of such parking spaces and
shall have no liability of any nature whatsoever if all or any of such spaces
are used by any other parties, including, but not limited to, other tenants in
the Building.

          19.  ACCESS.
               ------

               (a)  Leased Premises. Landlord acknowledges and agrees that the
Equipment at the Leased Premises is highly sensitive, requiring specialized
maintenance and care. It is essential to the successful operation of Tenant's
business that access to the Leased Promises be restricted to Tenant's employees
and agents. Landlord shall only have access to the Leased Premises for the
purposes for the purpose of making such alterations, repairs, improvements or
additions to the Leased Premises as required pursuant to this Lease. Landlord or
Landlord Parties shall give no less than two (2) days' prior written notice to
Tenant to each entry onto the Leased Premises and upon each entry, Landlord or
Landlord Parties shall be accompanied by a representative of Tenant. Landlord
acknowledges that due to the foregoing reasons, Landlord shall not have a key to
the Leased Premises during the Lease Term.

               (b)  Emergency Access - Leased Premises. In the event of an
Emergency, Landlord, or emergency personnel including fire or police department
personnel, may use force to enter the Leased Premises in order to remedy such
Emergency; provided, however that Landlord and such emergency personnel shall
use reasonable efforts to avoid causing damage to interfering with the
Equipment. Tenant shall, upon receipt of notice from Landlord, pay for all
damage to the Leased Premises or Building resulting from such forced entry by
Landlord or such emergency personnel into the Leased Premises, including without
limitation, damage to the door leading into the Leased Premises due to an
Emergency, as Additional Rent. For purposes of this Section, an "Emergency"
shall mean a condition in the

                                       14
<PAGE>

Leased Premises reasonably likely to cause imminent bodily harm to persons at
the Building or imminent and substantial damage to the Building.

               (d)  Building. Landlord acknowledges and agrees that in order to
accommodate Tenant's specialized utility needs, Tenant shall have a key to each
and every mechanical room located at the Building which contains equipment or
cabling of any kind relating to the Leased Premises of the Equipment, including
without limitation, boiler rooms and electrical rooms (the "Tenant Access
Mechanical Rooms"). Landlord further acknowledges and agrees that it is
essential to the successful operation of Tenant's business that access to each
and every Tenant Access Mechanical Room be restricted to only those of
Landlord's employees and agents who are trained as to the special requirements
of the Equipment and Tenant's specialized utility needs.

          20.  SIGNS.  All signs and symbols placed in the doors or windows or
               -----
elsewhere about the Leased Premises, or upon any other part of the Building,
including building directories, shall comply with and satisfy all conditions of
the Declaration and all laws, ordinances, regulations, requirements and the like
and shall, in any event, not be placed or installed without the prior written
approval of the Landlord. Any signs or symbols which have been placed without
approval may be maintained by Tenant at its sole cost and expense during the
Term and upon the expiration or sooner termination of this Lease all signs
installed by Tenant shall be removed and any damage resulting therefrom shall be
promptly repaired at Tenant's sole cost and expense. The provisions of this
Section 20 shall survive the expiration or sooner termination of this Lease.

          21.  SUBORDINATION.  This Lease, and the rights of Tenant hereunder,
               -------------
are and shall be, without further action by any party, subject and subordinate
to the lien, terms, conditions, operation and effect of any and all Mortgage(s)
now or hereafter encumbering or otherwise affecting the Land or Building and all
advances made or hereafter to be made upon the security hereof, and the rights
of any Mortgagee thereunder or with respect to each such Mortgage. The term
"Mortgage" means any mortgage, deed of trust, ground lease or other security or
financing instrument encumbering or otherwise affecting the Land or Building and
all renewals, replacements, modifications, consolidations, recasting,
refinancing or extensions thereof. At the election of any holder or beneficiary
of any Mortgage (collectively, a "Mortgagee"), this Lease shall be superior to
the lien of the applicable Mortgage. Upon request by Landlord, Tenant agrees to
execute whatever documentation may be required to further affect the provisions
of this Section 21 wherein such documentation shall include Landlord's standard
Non-Disturbance and Attornment clause. Tenant agrees that if any proceedings are
brought pursuant to a Mortgage (whether or not for foreclosure of the Mortgage)
or termination of any ground lease, Tenant, if requested to do so by the
purchaser or other successor to Landlord pursuant to foreclosure or other
proceedings under the Mortgage (including, but not limited to, any Mortgagee or
ground lessor), or pursuant to any conveyance in lieu of foreclosure, shall
recognize and attorn to such party as Landlord under this Lease, and shall make
all payments required hereunder to such new landlord without deduction or set-
off and, upon the request of such purchaser or other successor, execute, deliver
and acknowledge documents confirming such attornment. Tenant waives the
provisions of any law or regulation, now or hereafter in effect, which may give
or purport to give Tenant any right to terminate or otherwise adversely affect

                                       15
<PAGE>

this Lease and the obligations of Tenant hereunder in the event that any such
foreclosure or termination or other proceeding is prosecuted or completed.

          22.  TENANT'S DEFAULT.  Each of the following shall be an "Event of
               ----------------
Default" by Tenant hereunder:

               (a)  Tenant shall fail to pay when due any installment of Base
Rent and Additional Rent or any other charge or payment required of Tenant
hereunder;

               (b)  Subject to the provisions of Section 22(g) below, Tenant
shall violate or fail to perform any of the other terms, conditions, covenants
or agreements of this Lease, and such violation or failure shall continue for a
period of 30 days after Tenant's receipt of written notice thereof to Tenant
from Landlord;

               (c)  Tenant or any guarantor of this Lease shall (i) make a
general assignment for the benefit of its creditors, (ii) make a transfer in
fraud of creditors, (iii) admit in writing its general inability to pay its debt
when due, (iv) file any petition for, or answer seeking or concerning or
acquiescing to, bankruptcy, reorganization, moratorium, liquidation,
composition, extension, readjustment, arrangement, insolvency, dissolution or
similar relief under any federal, state or other statute, law or regulation or
otherwise, or (v) have filed against it any petition seeking any relief
mentioned in (iv) above in this sentence that is not stayed or dismissed within
30 days;

               (d)  Any execution, levy, attachment or other process of law
shall occur upon Tenant's Personal Property (or other property) or Tenant's
interest in the Leased Premises;

               (e)  (i) A trustee, receiver, liquidator or similar officer shall
be appointed for Tenant or any guarantor of this Lease for a substantial part of
Tenant's or any such guarantor's property and such appointment is consented or
acquiesced to by Tenant or any such guarantor, (ii) if not consented or
acquiesced to, such appointment shall not be stayed or dismissed within 30 days
after such appointment, or (iii) Tenant or any such guarantor shall seek the
appointment of any such trustee, receiver, liquidator or similar officer;

               (f)  Tenant shall vacate or abandon all or any of the Leased
Premises or shall remove or manifest an attempt to remove, not in the ordinary
cause of business, Tenant's goods and property from all or any of the Licensed
Premises such action will not constitute default under this lease if Tenant
continues to pay rent without default and the Leased Premises are kept secure;
and

               (g)  Any other act, failure or omission specifically referred to
herein as an Event of Default.

          23.  LANDLORD'S REMEDIES.
               -------------------

               (a)  If an Event of Default shall have occurred and be concurring
with regard to the making of any payment or the doing of any act herein required
to be made or done by Tenant, then Landlord may, but shall not be required to,
make such payment to do such act, and the making of such payment or the doing of
such act by Landlord shall not operate to cure

                                       16
<PAGE>

such Event of Default or to stop Landlord from the pursuit of any right or
remedy to which Landlord would otherwise be entitled. Any instrument(s) of Base
Rent and Additional Rent unpaid for 5 days after the date when due shall be
subject to a late charge equal to 5% of such installment payable as Additional
Rent to Landlord upon Tenant's receipt of Landlord's demand therefor. In
addition, any installments of Base Rent and Additional Rent not paid when due,
and any payments by Landlord hereunder on Tenant's behalf or for Tenant's
behalf, shall bear interest until paid at the rate that is 2 percentage points
above the Prime Rate (but in no event greater than the maximum rate permitted
under the laws of the state in which the land is located) and such interest, and
all amounts paid by Landlord on Tenant's behalf, shall constitute Additional
Rent hereunder due and payable upon Tenant's receipt of Landlord's demand
therefor. In addition to the foregoing, and without regard to whether this Lease
has been terminated, Tenant shall pay to landlord all costs incurred by
Landlord, including attorney's fees, with respect to any lawsuit or action
instituted or taken by Landlord to enforce the provisions of this Lease.

               (b)  If an Event of Default shall have occurred, Landlord, at
Landlord's option, may terminate this Lease by written notice to Tenant,
whereupon, on the date of such notice or any later termination date set forth
therein, all rights of Tenant hereunder shall expire and terminate, everything
herein required on the part of Landlord to be done and performed shall cease,
and this Lease shall end and terminate, except, and provided in all events,
however, that Tenant shall forever remain liable for all of Tenant's obligations
hereunder (including, but not limited to, the payment of Rent), no matter when
first accruing, occurring or arising, as herein provided over the entire Term as
if this Lease had not been terminated.

               (c)  If an Event of Default shall have occurred, with or without
terminating this Lease, Landlord may enter upon and take possession of the
Leased Premises and expel or remove Tenant and any other person who may be
occupying the Leased Premises or any part thereof, without being liable for
trespass, prosecution or any claim for any damages or liability therefor.
Landlord may thereupon make such alterations and repairs as, in Landlord's
absolute discretion, may be necessary to relet the Leased Premises or any part
thereof, alone or together with other portions of the Building, in Landlord's
name, Tenant's name or otherwise, without notice to Tenant, for such rent and
such use, and for such period of time and subject to such terms and conditions
as Landlord, in its absolute discretion, may deem advisable and receive the rent
therefor. Tenant shall be liable for any and all expenses (including, but not
limited to, attorneys' fees, disbursements and brokerage fees) incurred by
landlord in reentering and repossessing the Leased Premises, in correcting (but
not waiving or curing, or estopping Landlord from asserting any rights or
remedies with respect to) any default of Tenant, in painting, altering,
repairing or dividing the Leased Premises, in protecting and preserving the
Leased Premises by use of security guard and caretakers, and in reletting the
Leased Premises. Tenant shall, over the entire Term as if such repossession, and
any such termination had not occurred, remain liable for and pay to Landlord, on
demand, any deficiency between (i) the amount of Rent payable by the Tenant
hereunder, and (ii) any amount received by Landlord pursuant to any reletting
after deducting all of Landlord's expenses as described in the immediately
preceding sentence (all amounts so received by Landlord to be applied on account
of Tenant's obligations hereunder in any order that Landlord deems fit in
Landlord's sole discretion). Suit may be brought by Landlord at any time and
from time to time to enforce collection of such difference(s), and any suit
brought by Landlord to enforce collection of such

                                       17
<PAGE>

difference(s) for any one month shall not prejudice Landlord's right to enforce
the collection of any difference for any subsequent month(s) in subsequent
separate actions at any time and from time to time, as said damages shall have
been made more easily ascertainable by successive reletting. Landlord shall not
have any obligation to relet or attempt to relet all or any of the Leased
Premises and Landlord shall not be liable for any failure to relet the Leased
Premises or any part thereof or for any failure to collect any rent due upon any
such reletting. Notwithstanding any such reletting without termination, Landlord
may at any time thereafter elect to terminate this Lease for such prior Event of
Default. Tenant's liability shall survive the institution of summary proceedings
and the issuance of any warrant hereunder. No entry or taking possession of the
Leased Premises by Landlord will be construed as an election on Landlord's part
to terminate this Lease unless a written notice expressly stating such intention
is sent to Tenant.

               (d)  Landlord shall, to the extent permitted by law, have (in
addition to all other rights and remedies whatsoever) a right of distress for
rent and a lien on all of Tenant's personal property, except telecommunications
related equipment, and other property on the Leased Premises, as security of all
Rent and any other sums payable under this Lease.

               (e)  If Landlord terminates this Lease pursuant hereto, Landlord
shall be entitled to recover from Tenant at any time thereafter, and Tenant
shall pay to Landlord on demand, as and for liquidated and agreed final damages
for such Event of Default, an amount equal to the difference between (i) all
Base Rent and Additional Rent and other sums which would be payable under this
Lease from the date of such demand through the end of the Term (as if this Lease
had not been terminated), and (ii) the fair market rental value of the Leased
Premises over the same period (net of all expenses and all vacancy periods
reasonably projected by Landlord to be incurred in connection with the reletting
of the Leased Premises), discounted at the rate of five percent (5%) per annum.
Nothing herein shall be construed to affect or prejudice Landlord's right to
prove, and claim in full, unpaid Rent accrued prior to termination of this Lease
or Landlord's right to assert any indemnity claims pursuant hereto.

               (f)  Tenant, on its own behalf of all persons claiming by,
through or under Tenant, including all creditors, does hereby specifically waive
and surrender any and all rights and privileges, so far as if permitted by law,
which Tenant, and all such persons might otherwise have under any present or
future law (i) to redeem the Leased Premises or the Lease, (ii) to reenter or
repossess the Leased Premises, (iii) to restore the operation of this Lease,
with respect to any dispossession of Tenant by judgment or warrant of any court
or judge, or any re-entry by Landlord, or any expiration or termination, whether
such dispossession, re-entry, expiration or termination shall be by operation of
law or pursuant to the provisions of this Lease or (iv) to the benefit of any
law which excepts property from liability for debt or for distress for rent. The
words "dispossession," "re-enter," "entry," "re-entry," "re-entered," "possess,"
"repossession," "repossess," and "redeem" and the like as used in this Lease
shall not be deemed to be restricted to their technical legal meanings.

               (g)  Tenant hereby consents to the exercise of personal
jurisdiction over Tenant by the state court, and, if federal jurisdiction shall
be applicable, the United States District Court, with respect to the county in
which the Land is located.

                                       18
<PAGE>

               (h)  All and each of Landlord's rights and remedies set forth
herein shall be in addition to all rights and remedies at law or in equity or by
statute or otherwise, all of which are separate, distinct and cumulative and no
one of them, whether or not exercised by Landlord, shall be deemed in exclusion
of any of the others. Without limiting the generality of the foregoing, in the
event Tenant fails to take possession of the Leased Premises as herein required,
Tenant shall, among other things, be obligated to pay Landlord in full for all
Tenant improvements constructed or installed within the Leased Premises and for
all materials ordered at Tenant's request for the Leased Premises. The exercise
or beginning of the exercise by Landlord of any right or remedy shall not
prejudice the simultaneous or later exercise of any other rights or remedies.

          24.  QUIET ENJOYMENT. If, and so long as, Tenant pays the Rent and
               ---------------
fully performs and observes each and every term, covenant, obligation and
condition herein contained to be performed or observed by Tenant, Tenant shall
enjoy the Leased Premises during the Term without hindrance or molestation by
Landlord, subject to the terms, covenants and conditions of this Lease and the
lien, terms, conditions, operation and effect of any and all Mortgage(s) and the
rights of any Mortgage thereunder or with respect thereto.

          25.  FINANCING.
               ---------

               (a)  If, in connection with obtaining, or pursuant to, any
temporary, construction, permanent or other financing for the Building and/or
the Land, any lender shall request reasonable modifications of this Lease as a
condition to such financing. Tenant shall execute, acknowledge and deliver any
such modification to Landlord within ten (10) days after Tenant's receipt
thereof, provided such modifications do not increase the financial obligations
of Tenant hereunder or materially and adversely affect Tenant's use and
enjoyment of the Leased Premises as herein provided. Tenant agrees to give every
Mortgagee by certified mail, return receipt requested, a copy of any notice of
default served upon Landlord, provided that prior to such notice Tenant has been
notified in writing of the address of such Mortgagee.

               (b)  Tenant agrees that no Mortgagee shall be (i) bound by any
payment of Base Rent and Additional Rent for more than 1 month in advance, (ii)
bound by any amendment or modification of this Lease made without the consent of
such Mortgagee, (iii) liable for damages for any breach, act or omission of any
prior Landlord, (iv) bound to effect or pay for any construction for Tenant's
occupancy, (v) subject to any off-sets or defenses that Tenant may have against
any prior Landlord or (vi) have any obligation with respect to the Deposit of
Tenant's Prepaid Rent unless, and to the extent, the same has been physically
delivered to such Mortgagee.

          26.  HOLDOVER TENANCY. If (without execution of a new lease or written
               ----------------
extension) Tenant shall holdover after the expiration of the Term, then Tenant
shall, subject to Landlord's written consent but without execution of a new
lease, become a tenant at sufferance at a monthly rental equal to twice the Rent
due under the terms of this Lease, commencing said tenancy with the first day
next after the end of the Term. Tenant, as a tenant at sufferance, shall be
subject to all of the conditions and covenants of this Lease as though the
tenancy had originally been a monthly tenancy. During the holdover period, each
party hereto shall give to the other at least 30 days' written notice to quit
the Leased Premises, except in the event of

                                       19
<PAGE>

nonpayment of Rent when due, or the breach of any other covenant or default
hereunder by Tenant (without giving effect to any notice or right to cure
period), in which event Tenant shall not be entitled to any notice to quit, the
usual 30 days' notice to quit being expressly waived. The foregoing shall not
constitute Landlord's consent to any holdover by Tenant. Notwithstanding the
foregoing, if Landlord shall desire to regain possession of the Leased Premises
by any legal action or process in force in the jurisdiction in which the Land is
located, and Landlord shall have the right to recover all direct or indirect
costs, expenses, legal expenses, attorneys' fees, damages, loss of profits or
any other costs incurred by Landlord as a result of Tenant's failure or
inability to deliver possession of the Leased Premises to Landlord when required
under this Lease.

          27.  ESTOPPEL CERTIFICATE/FINANCIAL STATEMENT. Within 10 days after
               ----------------------------------------
request therefor from Landlord, Tenant shall deliver, in recordable form, a
certificate to any proposed Mortgage or purchaser, or to Landlord, together with
a true and correct copy of this Lease, certifying (i) whether this Lease is in
full force and effect and without modification, (ii) the amount of any prepaid
rent and/or security deposit paid by Tenant to Landlord, (iii) whether Landlord
has performed all of Landlord's obligations due to be performed under this Lease
and/or whether there are any defenses, counterclaims, deductions, or offsets
outstanding or other excuses for Tenant's performance under this Lease, (iv)
whether or not the Term has commenced and Tenant has accepted possession of the
Leased Premises, (v) the Commencement Date, (vi) the amount of Rent currently
due and payable, and (vii) any other information reasonable requested by
Landlord or such proposed Mortgage or purchaser. Tenant covenants and agrees
that, at any time, within 30 days after notice and demand by Landlord, Tenant
will furnish to Landlord Tenant's most recent financial statements as of the end
of Tenant's last fiscal year certified by an independent certified public
accountant or Tenant's chief financial officer, and Tenant consents to the
delivery of same by Landlord to lenders or prospective lenders or purchasers of
all or part of the Project or of any interest in a Mortgage.

          28.  MISCELLANEOUS.
               -------------

               (a)  Amendment. This Lease may not be amended or modified except
                    ---------
in writing and signed by Landlord and Tenant.

               (b)  Notices. All notices required by this lease shall be in
                    -------
writing and shall be effective, if mailed, when mailed by certified mail, return
receipt requested, or, if sent by messenger, when personally delivered, as
follows (or to such other address designated by written notice thereof to the
other given in accordance with the terms of this Section 28(b)):

          Notice to Landlord:                          Notice to Tenant:

          Laing Beaumeade, Inc.                        Equinix, Inc.
          c/o Laing Properties, Inc.                   [*]
          2401 Pennsylvania Avenue, N.W.               Suite C
          Washington, D.C. 20037-1730                  Ashburn Virginia 20147
          Attention: General Manager

_____________________

*CONFIDENTIAL TREATMENT REQUESTED.  CONFIDENTIAL PORTION HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION.

                                       20
<PAGE>

          With a copy to:                         With a copy to:

          Laing Beaumeade, Inc.                   Equinix, Inc.
          c/o Laing Properties, Inc.              901 Marshall Street
          5901-B Peachtree-Dunwoody Road          Redwood City, CA 94063
          Atlanta, Georgia 30328
          Attention:  General Counsel

               (c)  Binding Effect. Subject to the provision of Section 15
                    --------------
hereof and all other restrictions set forth herein, this Agreement shall be
binding upon and inure to the benefit of the parties hereto and their successors
and assigns.

               (d)  Limitation Of Landlord's Liability. Notwithstanding any
                    ----------------------------------
provision to the contrary contained herein, Tenant shall look solely to the
estate and interest of Landlord in and to the land and the Building, and
Landlord shall have no personal liability, in the event of any claim against
Landlord arising out of or in connection with this Lease, the relationship of
Landlord and Tenant, or Tenant's use of the Leased Premises, and Tenant agrees
that the liability of Landlord arising out of or in connection with this Lease,
the relationship of Landlord and Tenant, or Tenant's use of the Leased Premises,
shall be limited solely to such estate and interest of Landlord in as to the
Land and the Building and that Landlord shall have no personal liability as
provided above in this sentence. No properties or assets of Landlord other than
the estate and interest of Landlord in and to the land and the Building, and no
property owned by any partner of Landlord, shall be subject to levy, execution
or other enforcement procedures for the satisfaction of any judgment (or other
judicial process) or for the satisfaction of any other remedy of Tenant arising
out of or in connection with this Lease, the relationship of Landlord and Tenant
or Tenant's use of the Leased Premises. Further, in no event whatsoever shall
any partner in Landlord have any liability or responsibility whatsoever arising
out of or in connection with this Lease, the relationship of Landlord and
Tenant, or Tenant's use of the Leased Premises.

               (e)  Accord And Satisfaction. No receipt and retention by
                    -----------------------
Landlord of any payment tendered by Tenant in connection with this Lease, or
application of the Deposit, will give rise to, or support or constitute, and
accord and satisfaction, notwithstanding any accompanying statement, instrument
or other assertion to the contrary (whether by notation on a check or in a
transmittal letter or otherwise), unless Landlord expressly agrees in a separate
writing to an accord and satisfaction.

               (f)  Severability. If any term or provision, or any portion
                    ------------
thereof, of this Lease, or the application thereof to any person or
circumstances shall, to any extent, be illegal, invalid or unenforceable, the
remainder of this Lease or the application of such term or provision to persons
or circumstances other than those as to which it is held illegal, invalid or
unenforceable, shall not be affected thereby, and each term and provision of
this Lease shall be valid and be enforced to the fullest extent permitted by
law. It is the intention of the parties hereto that if any such provision is
held to be illegal, invalid or unenforceable, there will be added in lieu
thereof a provision as similar in terms to such provision as is legal, valid and
enforceable.

                                       21
<PAGE>

               (g)  Waiver/Consent. No term, condition or provision of this
                    --------------
Lease shall be deemed waived, unless waived in writing by the party against whom
such waiver is to be enforced. One or more waivers of any covenant, term or
condition of this Lease by either party shall not be construed as a waiver of a
subsequent breach of the same covenant, term or condition. The consent or
approval by either party to or of any act by the other party requiring such
consent or approval hereunder shall not be deemed to waive or render unnecessary
consent to or approval of any subsequent similar act.

               (h)  Time.  Time is of the essence hereof.
                    ----

               (i)  Applicable Law.  This License shall be construed according
                    --------------
to the laws of the Commonwealth of Virginia in which the Land is located.

               (j)  Anticipatory Repudiation. If, prior to the commencement of
                    ------------------------
the Term, Tenant notifies Landlord of or otherwise unequivocally demonstrates an
intention to repudiate this Lease, Landlord may, at its option, consider such
anticipatory repudiation a breach of this Lease and an Event of Default
hereunder. In addition to any other remedies available to Landlord hereunder or
at law or in equity or by statute or otherwise, Tenant shall pay in full for all
tenant improvements constructed or installed within the Leased Premises as of
the date of such breach and for materials ordered at Tenant's request for the
Licensed Premises, attorneys' fees, brokerage fees, costs of reletting and loss
of Rent.

               (k)  Entire Agreement. This Lease sets forth all the covenants,
                    ----------------
promises, agreements, conditions and understandings between Landlord and Tenant
concerning the Leased Premises, Building, and Project, and there are no
covenants, promises, agreements, conditions or understandings, either oral or
written, between them other than as set forth herein.

               (l)  Waiver of Jury Trial. Landlord and Tenant each hereby waive
                    --------------------
trial by jury in any action, proceeding or counterclaim brought by either of
them against the other, on any claim or matter whatsoever arising out of or in
any way connected with this Lease, the relationship of Landlord and Tenant,
Tenant's use and occupancy of the Leased Premises and/or any claim of injury or
damage.

               (m)  Captions. Any headings preceding the text of the several
                    --------
Sections or Subsections hereof are inserted solely for convenience of reference
and shall not constitute a part of this Lease, nor shall they affect the
meaning, construction or effect of this Lease.

               (n)  Force Majeure. In the event that Landlord shall be delayed,
                    -------------
hindered in or prevented from the performance of any act or obligation required
hereunder by reason of acts of God, strikes, lockouts, labor troubles or
disputes, inability to procure or shortage of materials or labor, failure of
power or any utilities whatsoever, delay in transportation, fire, vandalism,
accident, flood, severe weather, other casualty, restrictive governmental laws,
regulation, or orders (including, but not limited to, mandated changes in plans
and specifications or the Landlord's Work resulting from changes in pertinent
codes and regulations or interpretations thereof), riot, insurrection, civil
commotion, sabotage, explosion, war, natural or local emergency, acts or
omissions of others, including, but not limited to, Tenant, or other reasons of
a similar or dissimilar nature not solely the fault of, or under the

                                       22
<PAGE>

exclusive control of, Landlord, then performance of such act shall be excused
for the period of the delay and the period for the performance of any such act
shall be extended for the period equivalent to the period of such delay.

               (o)  Surrender. Tenant agrees to yield up and surrender the
                    ---------
Leased Premises, at the expiration or earlier termination of this Lease, clean
and neat, and in the same condition and repair in which they are required to be
kept by Tenant throughout the Term, reasonable wear and tear excepted.

               (p)  Effect of Submission. The submission by Landlord to Tenant
                    --------------------
of this Lease shall not constitute a reservation of, or an option for, the
leasing of the Leased Premises and this Lease shall have no binding force and
effect unless and until executed by Landlord and Tenant and, if required
pursuant to applicable loan documents, approved by any current Mortgagee.

               (q)  Recording. Tenant shall not record this Lease or a
                    ---------
memorandum or other notice thereof without the written consent of Landlord
(which consent may be withheld in Landlord's sole and absolute discretion), and
Tenant's recording of this Lease or a memorandum or other notice hereof will be
void and an Event of Default hereunder.

               (r)  Independent Covenants. Tenant's covenants to pay Rent, and
                    ---------------------
any other payments required of Tenant hereunder, are independent of all other
covenants and agreements herein contained. All obligations of Landlord hereunder
shall be construed as covenants, not as conditions.

               (s)  Brokers.  Landlord and Tenant represent and warrant to each
                    -------
other that, except as set forth below in this Section 28(s), neither has had any
dealings, negotiations or consultations with respect to the Leased Premises or
this transaction with any broker or other intermediary. In the event that any
broker or other intermediary claims a commission or other compensation with
respect to this transaction, the party alleged to have created the right to such
commission or compensation shall be responsible for and will indemnify and save
harmless the other party from and against any and all costs, fees, expenses
(including, without limitation, reasonable attorneys' fees), liabilities and
claims incurred or suffered by the other party as a result thereof. Landlord
                                                                    --------
hereby represents that in the event GSHH/LBG, LLC representing Landlord is
                                    -----------------------------------
entitled to a commission with respect to the transaction herein contemplated,
Landlord shall be responsible for a reasonable commission pursuant to terms and
--------
conditions contained in separate agreements.

               (t)  Counterparts. This Lease may be executed in counterparts,
                    ------------
each of which shall constitute one and the same agreement.

               (u)  Hazardous Waste.  The term "Hazardous Substance," as used in
                    ---------------
this Lease, shall mean pollutants, petroleum, contaminants, infections, toxic or
hazardous waste, asbestos, radioactive materials, polychlorinated biphenyls or
any other substances, materials or debris, the removal of which is required or
the use, handling, deposit, or storage of which is restricted, prohibited,
regulated or penalized by any "Environmental Law", which term shall mean any
federal, state or local law, statute, ordinance, rule, code, regulation or
requirement

                                       23
<PAGE>

directly or indirectly relating to pollution or protection of the environment.
Except as consented to by Landlord pursuant to this Lease, Tenant hereby
covenants and agrees, for itself, its agents, contractors, subtenants and
employees, that (i) no activity will be conducted on all or any part of the
Leased Premises or balance of the project that will produce or cause the release
of any Hazardous Substances or otherwise violate or fail to comply with any
Environmental Law; (ii) the Leased Premises and the balance of the Project will
not be used in any manner for the storage (for any period of time whatsoever) of
any Hazardous Substances; (iii) no portion of the Leased Premises or balance of
the Project will be used as a landfill or a dump; (iv) no underground tanks of
any type will be installed on the Lease Premises or the balance or the Project;
(v) no surface or subsurface conditions shall exist or come into existence that
constitute, or with the passage of time may constitute, a public or private
nuisance on the Leased Premises or the balance of the Project; and (vi) no
Hazardous Substances shall be brought onto or into the Leased Premises or
balance of the Project. If any such Hazardous Substance is brought or found
located in or on the Leased Premises, the same shall be immediately removed by
Tenant, with proper disposal, and all required cleanup procedures shall be
diligently undertaken pursuant to all Environmental Laws, by Tenant, at Tenant's
sole cost and expense. If, at any time during or after the Term, the Leased
Premises are found to be so contaminated or subject to said conditions, or if
Tenant shall, by act or omission, breach any of its obligations under this
Section 28(u), an Event of Default shall exist. The provisions of this Section
28(u) shall survive the expiration or earlier termination of this Lease.

               (v)  Authority.  Tenant represents and warrants that the
                    ---------
individual executing this Lease on behalf of Tenant is authorized to execute and
deliver this Lease; that Tenant is validly formed or organized and in good
standing in the state of its incorporation or formation and authorized to
transact business in the jurisdiction in which the Land is located; that Tenant
has the power and authority to enter into this Lease; and that all action
required to authorize Tenant to enter into this Lease has been taken. Upon
receipt of Landlord's request, Tenant will provide Landlord with evidence
satisfactory to Landlord confirming all of the above representations and
warranties.

               (w)  Joint and Several.  In the event this Lease is executed by
                    -----------------
more than one party as Tenant, the liability of all such parties shall be deemed
to be joint and several for all purposes hereunder.

               (x)  Transfer by Landlord.  In the event of any sale, transfer or
                    --------------------
other disposition of Landlord's interest in the Project, Landlord shall
automatically and without any further act or instrument be released and relieved
of and from any and all obligations and liabilities of Landlord occurring from
and after the day of any such transfer and in such event Landlord's successor or
transferee by accepting such sale, transfer or assignment shall thereby
automatically assume and be liable for all obligations and liabilities of
Landlord which accrue from and after such sale or transfer and Tenant agrees to
look solely to such successor or transferee for the performance of any such
duties and obligations and in satisfaction of all such obligations and
liabilities under this Lease Agreement, notwithstanding that all pre-paid rent,
pre-paid Common Area Maintenance fees and all Security Deposits are transferred
to Landlord's successor or transferee.

                            (SIGNATURES TO FOLLOW)

                                       24
<PAGE>

          IN WITNESS WHEREOF, Landlord and Tenant have caused this Lease to be
duly executed as of the date first above written.

                                   LANDLORD:


WITNESS:                           Laing Beaumeade, Inc.,
                                   a Georgia corporation



   [signature illegible]           By:    [signature illegible]   (SEAL)
-----------------------------         -----------------------------


                                   Its:  E.V.P.


                                   TENANT:


WITNESS:                           Equinix, Inc.
                                   a Delaware corporation



   [signature illegible]           By:    /s/ Jay S. Adelson      (SEAL)
-----------------------------         -----------------------------


                                   Its:  CTO

WITNESS:


   [signature illegible]           By:    /s/ Albert M. Avery     (SEAL)
-----------------------------         -----------------------------


                                   Its:  CEO

                                       25
<PAGE>

                                  EXHIBIT "A"

                        DESCRIPTION OF LEASED PREMISES
                        ------------------------------


                            [Graphic of Floor Plan]

                                       26
<PAGE>

                                  EXHIBIT "B"

                               LAND DESCRIPTION
                               ----------------


                               [Graphic of Land]

                                       27
<PAGE>

                                  EXHIBIT "C"
                               ANNUAL BASE RENT
                               ----------------

<TABLE>
<CAPTION>
FROM                         TO             RENTAL RATE            MONTHLY                 ANNUALLY
<S>                   <C>                   <C>                    <C>                     <C>
Jan. 15, 1999         Jan. 31, 1999                $[*]               $[*]                    $[*]

Feb. 1, 1999          Jan. 31, 2000                $[*]               $[*]                    $[*]

Feb, 1, 2000          Jan. 31, 2001                $[*]               $[*]                    $[*]

Feb, 1, 2001          Jan. 31, 2002                $[*]               $[*]                    $[*]

Feb, 1, 2002          Jan. 31, 2003                $[*]               $[*]                    $[*]

Feb, 1, 2003          Jan. 31, 2004                $[*]               $[*]                    $[*]

Feb, 1, 2004          Jan. 31, 2005                $[*]               $[*]                    $[*]

Feb, 1, 2005          Jan. 31, 2006                $[*]               $[*]                    $[*]

Feb, 1, 2006          Jan. 31, 2007                $[*]               $[*]                    $[*]

Feb, 1, 2007          Jan. 31, 2008                $[*]               $[*]                    $[*]

Feb, 1, 2008          Jan. 31, 2009                $[*]               $[*]                    $[*]
</TABLE>

_____________________

*CONFIDENTIAL TREATMENT REQUESTED.  CONFIDENTIAL PORTION HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION.

                                       28
<PAGE>

                                  EXHIBIT "D"

                                WORK AGREEMENT
                                --------------

          THIS WORK AGREEMENT is entered into the 18th day of November 1998 by
and between Laing Beaumeade, Inc. ("Landlord") and Equinix, Inc. ("Tenant"), and
attached as Exhibit "D" to that certain Lease (the "Lease") of even date
herewith, by and between Landlord and Tenant.  All terms used in this Exhibit
"D" shall have the same meanings set forth in the Lease except as otherwise
defined herein.

     1.   Landlord's Work. It is hereby understood and acknowledged by the
          ---------------
parties hereto that Landlord is leasing the Leased Premises to Tenant in "as is"
condition with all faults, and that Landlord has made no representations
respecting the condition of the Leased Premises or the Project not expressly
contained herein. Landlord shall have no obligation to perform any work in, or
for the benefit of the Leased Premises except as follows:

          (a)  At no cost to Tenant, Landlord shall supply building standard
warehouse lighting and natural gas powered, ceiling mounted building standard
warehouse heaters, (the "Landlord's Work").

     2.   Tenant's Work. Tenant hereby agrees to provide all work and materials
          -------------
for the construction and/or installations of all alterations and improvements in
the Leased Premises (including interior construction, interior design,
telecommunications cabling and installation, and other associated finishes and
fixtures) required by Tenant for the operation of Tenant's business therein (the
"Tenant's Work") in accordance with (a) the final plans and working drawings
approved by Landlord, (b) all of the terms and conditions for making
improvements and alterations as set forth in Paragraph 13 of the Lease, (c) the
terms and conditions set forth in this Exhibit "D", and (d) all applicable
codes, laws and regulations. As part of the Tenant's Work, Tenant, at Tenant's
sole expense, shall install and maintain such fire extinguishers and other fire
protection devices as may be required from time to time by any agency having
jurisdiction thereof and/or the underwriters of the insurance company(ies)
insuring the Project. Tenant shall timely pay all expenses incurred by Tenant in
connection with the Tenant's Work, whether such payments are due contractors,
subcontractors or others.

     3.   Permits and Licenses. Tenant shall not commence the Tenant's Work
          --------------------
until Tenant has delivered to Landlord a building permit approved by the
applicable governmental authorities. Tenant shall be responsible for obtaining
all other necessary permits and licenses for the Tenant's Work and shall be
responsible for the payment of all fees associated therewith. Tenant shall also
be responsible for the performance of the Tenant's Work in accordance with all
applicable Federal, state and county laws, ordinances, regulations, restrictions
and codes (including, but not limited to, the Americans With Disabilities Act),
and in accordance with the provisions of Paragraph 13 of the Lease.

     4.   Insurance.
          ---------

          (a)  During the period commencing on the date Landlord tenders
possession of the Leased Premises for construction of the Tenant's Work and
continuing until the

                                       29
<PAGE>

construction of the Tenant's Work is complete. Tenant shall carry and maintain
at no expense to Landlord builder's completed value "all-risk" insurance,
including collapse and transit coverage.

          (b)  During the period commencing on the date Landlord tenders
possession of the Leased Premises or construction of the Tenant's Work and
continuing until the construction of the Tenant's Work is complete, Tenant shall
require each contractor and subcontractor performing all or any portion of the
Tenant's Work to carry and maintain or no expense to Landlord;

               (i)    comprehensive general liability insurance, including
contractor's liability coverage, contractual liability coverage, completed
operations coverage, Leased Premises-operations coverage, broad form property
damage endorsement and independent contractor's protective liability coverage in
an amount not less than Two Million Dollars ($2,000,000.00) combined single
limit per occurrence provided that such coverage may be provided through an
umbrella insurance policy affording comparable coverage, naming Landlord as an
additional insured and other meeting the criteria set forth in Paragraph 10 of
the Lease.

               (ii)   worker's compensation or other similar insurance in the
form and amounts required by law.

          (c)  Certified copies of insurance policies or certificates of
insurance for the foregoing coverage shall be delivered to Landlord prior to
commencement of the Tenant's Work and, on renewal of such policies, not less
than twenty (20) days before expiration of the term of the policy.

     5.  Temporary Utilities.
         -------------------

          (a)  Tenant shall pay the costs of all utilities furnished to the
Leased Premises during the period Tenant is performing the Tenant's Work.

          (b)  Tenant, at its expense, may provide temporary telephone service
to the Leased Premises during the period Tenant is performing the Tenant's Work.


     6.   Plans Approval; Schedule.
          ------------------------

          (a)  It is agreed that Tenant will develop construction drawings and
specifications for completion of the Tenant's Work to be performed in the Leased
Premises. All such construction drawings and specifications are expressly
subject to Landlord's written approval; however, notwithstanding any such
approval by Landlord, Tenant shall be solely responsible for the content of the
construction drawings and specifications (including compliance with all
applicable laws, including, but not limited to, compliance with the Americans
With Disabilities Act), and coordination of the construction drawings and
specifications with base Project design. Tenant shall reimburse Landlord upon
demand for the Landlord's reasonable out-of-pocket costs for review of Tenant's
plans, drawings and specifications (including, but not limited to, the cost of
review of mechanical, electrical and plumbing plans and review (if any) for
compliance with applicable laws). Tenant, upon written notice from Landlord,
shall immediately pay said costs to Landlord as Additional Rent under the Lease.

                                       30
<PAGE>

               (i)    Tenant will deliver to Landlord, for Landlord's approval,
Tenant's proposed construction schedule and a complete set of Tenant's
preliminary construction drawings and specifications for the entire Leased
Premises prepared by Tenant's architect. Such construction drawings and
specifications shall set forth, among other things:

                      (A)  the location of equipment;

                      (B)  the location and specification of telephone and other
communication outlets;

                      (C)  the location and specification of electrical outlets,
especially those required to accommodate items such as computers and 220 volt
equipment;

                      (D)  the location of heat-producing machines, and
specification of heat output (BTU/hour) and required operating conditions
(maximum/minimum temperature, hours of operation);

                      (E)  the location, manufacture, specifications and plans
for any heating, air conditioning or ventilation units to be installed in the
Leased Premises.

               (ii)   Within seven (7) days after such delivery, Landlord shall
deliver to Tenant in writing its approval of such construction drawings and
specifications or changes to such construction drawings and specifications that
will be required to obtain Landlord's approval.

               (iii)  Within seven (7) days after delivery of Landlord's report
containing required and/or suggested revisions to Tenant's preliminary
construction drawings and specifications, Tenant shall deliver to Landlord
Tenant's revised preliminary construction drawings and specifications containing
the required revisions and such suggested revisions as Tenant chooses to
incorporate, together with electrical and mechanical drawings prepared by a
professional engineer.

               (iv)   Within five (5) days after such delivery, Landlord shall
deliver its confirmation that all required revisions have been made (if such is
the fact) and its approval of the revised preliminary plans (or if all such
revisions have not been made, Landlord shall, within said 5 day period, not if
Tenant of any additional revisions which are required to obtain Landlord's
approval, and Tenant shall then cause such additional revisions to be made
within the time period specified in (iii) above). If within said 5 day period,
the Landlord's required revisions are fully incorporated into the preliminary
drawings, Landlord's approval of said revised preliminary drawings shall be
considered as Landlord's final approval.

          (b)  All construction drawings and specifications to be prepared by
Tenant or on Tenant's behalf pursuant to this Exhibit "D" shall be prepared at
Tenant's sole cost and expense.

          (c)  Landlord reserves the right from time to time to require, without
the consent or approval of Tenant, that Tenant modify, amend or change the
Tenant's final

                                       31
<PAGE>

construction drawings and specifications as may be necessary to comply with any
applicable law or regulation of any governmental authority or insurance board.

          (d)  Upon completion of the Tenant's Work, Tenant shall deliver to
Landlord one (1) complete Mylar film or "blue-line" set of "as-built" plans for
the Tenant's Work, and a copy of the Tenant's permanent certificate of occupancy
for the Leased Premises.

     7.   Coordination of Tenant's Work. Tenant shall, upon the execution of the
          -----------------------------
Lease, designate in writing to Landlord the individual ("Tenant's Agent") having
authority to approve plans and specifications on Tenant's behalf and to
authorize changes or additions to work during construction. Authorization by
Tenant's Agent shall be deemed to be authorization by Tenant.

     8.   Performance of Tenant's Work.
          ----------------------------

          (a)  Tenant agrees to complete at Tenant's sole cost and expense all
work to the Leased Premises as shown on the Tenant's final construction plans
and specifications and all other work necessary to complete the Leased Premises
for Tenant's occupancy.

          (b)  All materials used in the performance of the Tenant's Work shall
be of top quality and in new condition. All systems shall be in good working
order when completed. All equipment installed shall be Underwriter's Laboratory
approved and be covered by a standard manufacturers and installation warranties,
and Tenant shall perform, or cause its contractor to perform, all of the
Tenant's Work in a good and workmanlike manner and in compliance with all
applicable codes, laws and regulations.

          (c)  Subject to the provisions of paragraph 4(c) herein, Tenant shall
have the right to select its own contractors and subcontractors (subject to
Landlord's consent over such contractors and subcontractors, which consent shall
not be unreasonably withheld, conditioned or delayed) to perform any work in the
Leased Premises, provided that:

               (i)    the contractors employed in connection with the Tenant's
Work shall be licensed, bonded and reputable contractors, and shall comply with
any applicable law and reasonable work rules and regulations established by
Landlord from time to time for all work in the Leased Premises (including, but
not limited to those set forth herein in paragraph 10 of this Exhibit "D");

               (ii)   in Landlord's reasonable judgement, such work or the
identities or presence of such contractors or their subcontractors will not
result in delays, stoppages or other action or the threat thereof which may
interfere with construction progress of or delay in completion of other work in
the Building or in any other project then under construction by Landlord, or in
any manner impair any guarantee or warranty from Landlord's contractor or its
subcontractors, or conflict with any labor agreements applicable to the
construction of the Project by Landlord; and

               (iii)  each such contractor and subcontractor, and the nature and
extent of the work to be performed by it, shall be approved by Landlord (but
such approval shall not relieve Tenant of its responsibility to comply with the
applicable provisions of this Exhibit

                                       32
<PAGE>

nor constitute a waiver by Landlord of any of its rights under the Lease).
Tenant shall be responsible for negotiating all fees with Tenant's permitted
contractors and subcontractors, irrespective of whether Tenant employs
Landlord's contractor another contractor or subcontractor.

               (d)  Tenant shall defend, indemnify and hold harmless Landlord
and its property and asset managers and their respective agents, employees,
officers and partners, harmless from and against any claim, demand, loss,
damage, cost, liability, suit, or expense, whether occurring incurred or arising
before or after the Lease Commencement Date, arising from or out of or in
connection with, the performance of the Tenant's Work, and, without limiting the
foregoing. Landlord shall have the right to offset against the Tenant Allowance
(as defined below) any monies incurred, payable or paid by or on behalf of
Landlord with respect to which Landlord is entitled to be indemnified, or may
invoice the same as Additional Rent pursuant to the Lease and payable upon
demand from Landlord.

     9.   Construction Rules. Tenant hereby agrees that, with respect to any all
          ------------------
Tenant's Work, Tenant and each of Tenant's contractors, subcontractors,
suppliers, laborers and others performing all or any portion of the Tenant's
Work shall comply with the rules and regulations listed in Exhibit "H" attached
hereto.

                                       33
<PAGE>

                                  EXHIBIT "E"
                                  ----------

                             RULES AND REGULATIONS
                             ---------------------

          The following rules and regulations have been formulated for the
safety and well-being of all tenants of the Building.

          Landlord may waive the compliance by a tenant to any of these rules
and regulations, provided that (i)  no waiver shall be effective unless signed
by Landlord or Landlord's authorized agent, (ii)  any such waiver shall not
relieve such tenant from the obligation to comply with such rules or regulations
in the future unless expressly consented to by Landlord and (iii)  no waiver
granted to any tenant shall relieve any other tenant from the obligation of
complying with the rules and regulations unless such other tenant has received a
similar waiver in writing from the Landlord.

          Landlord shall not be responsible to any tenant for the non-observance
or violation of or by any other tenant of any of these rules and regulations at
any time.

          1.   The Common Areas shall not be obstructed or encumbered by Tenant
or used for any purpose other than ingress and egress to and from the Leased
Premises except as provided herein. Landlord shall have the right to control and
operate the Common Areas, except those areas as defined in Exhibit A of the
Lease, in such manner as Landlord, in Landlord's sole discretion, deems best for
the benefit of the tenants generally. No tenant shall permit the visit to the
Leased Premises of persons in such numbers or under such conditions as to
interfere with the use and enjoyment by other tenants of Common Areas.

          2.   No awning, antennas, or other projections shall be attached to
the outside walls of the Building, except as provided herein.

          3.   No showcases or other articles shall be put in front of or
affixed to any part of the exterior of the Building, nor placed in the halls,
corridors or vestibules or other Common Areas of the Building without the prior
written consent of Landlord.

          4.   The water and wash closets and other plumbing fixtures shall not
be used for any purposes other than those for which they were constructed, and
no sweepings, rubbish, rags, chemicals, paints cleaning fluids or other
substances shall be thrown or placed therein. Without limiting any of the
provisions of the Lease which this Exhibit C forms a part of and the rights and
remedies of Landlord thereunder, all damages resulting from any misuse of the
plumbing fixtures shall be borne by the tenant who, or whose servants,
employees, agents, visitors, or licensees, shall have caused the same.

          5.   There shall be no marking, painting, drilling into or other
forms(s) of defacing of any part of the Project (exclusive of the Leased
Premises) or of any part of the Leased Premises visible from the Common Areas.
Tenant shall not construct, maintain, use or operate within the Leased Premises
any electrical devices, wiring, or apparatus in connection with a loud speaker
system or other sound systems, except as

                                       34
<PAGE>

reasonably required for its communication system and approved prior to the
installation thereof by Landlord. No such loud speaker or sound system shall be
constructed, maintained, used or operated outside of the Leased Premises.

          6.   No bicycles, vehicles, animals, birds, or pets of any kind shall
be brought into or kept in or about the Leased Premises. No cooking (except for
hot-plate cooking by Tenant's employees for their own consumption, the equipment
for and location of which are first approved by Landlord) shall be done or
permitted by Tenant on the Leased Premised. Tenant shall not cause or permit any
unusual or objectionable odors to be produced upon or permeate of originate from
the Leased Premises. Tenant shall be obligated to maintain sanitary conditions
in any area approved by Landlord for food preparation and consumption.

          7.   Other than expressly permitted under the Lease, no spaced in the
Building shall be used for the manufacturing of goods, merchandise, or other
property, or for the sale or auction of merchandise, goods, or property of any
king. The office area of the Leased Premises may be used only for office use.

          8.   No tenant shall make, or permit to be made, any unseemly or
disturbing noises or disturb or interfere with occupants of the Building for
neighboring buildings or premises or those having business with them whether by
the use of any mechanical instrument, radio, talking machines, tape machine,
unmusical noise, other sound or sound system or in any other way. No tenant
shall throw anything out of the doors or windows or down the corridors or
stairs. In addition, Tenant shall not permit any vibrations from the operation
of Tenant's machines, fixtures, mechanical equipment or otherwise to exist to
any degree or extent as to be objectionable to Landlord or any other tenant(s)
in the Building.

          9.   No flammable, combustible, explosive, hazardous or toxic fluid,
chemical or substance shall be brought into, or kept or generated upon, the
Leased Premises or balance of the Project, except for materials defined by the
Federal Code of Regulations for consumer products with packaging as defined
under Department of Transportation Packaging Regulations CFR - 49, paragraph
171-100, except as provided herein.

          10.  No additional locks or bolts of any kind shall be placed upon any
of the doors or windows by any tenant, nor shall and changes be made in the
existing locks or mechanisms thereof, except as provided herein. The doors
leading to the Common Areas shall be kept closed during business hours except as
they may be used for ingress or egress. Each tenant shall, upon the termination
or expiration of its tenancy, restore to the Landlord all keys of or to offices,
storage, toilet rooms, or with respects to any and all other portions of the
Leased Premises or Building, either furnished to, or otherwise procured by, such
tenant, and in the event of the loss of any keys so furnished, such tenant shall
pay to Landlord the cost thereof.

          11.  Tenant shall not pay any employees on the Leased Premises, except
those actually working for Tenant on the Leased Premises.

                                       35
<PAGE>

          12.  Landlord reserves the right to exclude from the Building at all
times any person who is not known or does not properly identify himself to any
Building management, security guard on duty, or security system monitor. Each
tenant shall be responsible for all persons for whom he authorizes entry into or
exit out of the Building, and shall be liable to Landlord for all acts or
omissions of such persons.

          13.  The Leased Premises shall not, at any time, be used for lodging
or sleeping or any immoral or illegal purpose.

          14.  Tenant, before closing and leaving the Leased Premises at any
time, shall see that all windows are closed and all lights are turned off.

          15.  Landlord's employees shall not perform any work or do anything
outside of their regular duties, unless under special instruction from the
management of the Building. The requirements of tenants will be attended to only
upon application to Landlord and any such special requirements shall be billed
to the applicable tenant (and paid with the next installation of Base Rent) at
the schedule of charges maintained by Landlord from time to time or at such
charge as is agreed upon in advance by Landlord and such tenant.

          16.  Canvassing, soliciting, and peddling in the Building are
prohibited and each tenant shall cooperate to prevent the same.

          17.  There shall not be used in any space or in the public halls of
the Building, either by any tenant or by jobbers or others, in the delivery or
receipt of merchandise, any hand trucks except those equipped with rubber tires
and side guards, and each tenant shall be responsible to Landlord for any loss
or damage result from any deliveries of such tenant to the Building. All
material handling equipment used on the concrete warehouse floor shall have
rubber tires.

          18.  Mats, trash, or other objects shall not be placed in the Common
Areas. All trash shall be disposed of in a manner acceptable to Landlord.

          19.  No sign, advertisement, notice, or other lettering shall be
exhibited, inscribed, painted or affixed by any tenant on any part of the
outside or inside of the Building, or on any other portion of the Project,
without the prior written consent of the Landlord and the Beaumeade Owners
                                                          ----------------
Association Architectural Review Committee. In the event of the violation of the
-----------
foregoing by any tenant, Landlord may charge the expense incurred by such
removal to the tenant responsible for such violation.

20. INTENTIONALLY DELETED.

          21.  Tenant acknowledges and agrees that all company, non-company,
customer, contractor, and vendor trucks including but not limited to tractors
trailers, wheeled containers of any type, tractor cabs, cube and straight bed
trucks shall park only at the rear of, immediately adjacent to and in alignment
with the Tenant's Leased Premises. Such parking shall not infringe upon
neighboring tenant's dock and loading areas. All parked vehicles shall be
removed from the truck court no less than every ten

                                       36
<PAGE>

(10) days. In no event and at no time whatsoever shall Tenant's un-used vehicles
remain parked in the truck court, parking lots, or adjacent to the Building in
excess of ten (10) days. All non-wheeled containers, regardless of size, shall
be stored inside the Leased Premises. Tenant acknowledges and agrees that
parking in the front of Building shall be in common with other tenants and shall
be used only for employee, visitor and customer automobiles, pick-up trucks,
passenger vans, and motorcycles. In no event and at no time whatsoever shall
Tenant's parking of vehicles encroach upon the Project's Fire Lane(s). In no
event and at no time whatsoever shall Tenant's parking of vehicles include
boats, recreational vehicles, aircraft, trailers, cranes, campers, tents, or any
other vehicle or storage device which is not approved in writing, in advance by
Landlord.
<PAGE>

                                  EXHIBIT "F"
                             SPECIAL STIPULATIONS

1.   RENEWAL OPTION

     A.   Tenant shall have the right to renew this Lease for three (3)
          additional terms of five (5) years each commencing on February 1,
          2010, February 1, 2015 and February 1, 2020 (hereinafter referred to
          as the "Renewal Lease Term"). Said right to renewal shall be subject,
          however, to the following conditions precedent:

          1.   Tenant shall give Landlord written notice of its exercise of each
               such renewal option at least one hundred eighty (180) days prior
               to the expiration of the Term and each Renewal Lease Term: and

          2.   Tenant shall not be in material default in performance of or with
               respect to any of the terms, covenants, and conditions of the
               Lease.

     B.   All of the terms, covenants and conditions of this Lease shall
          continue in full force and effect during each Renewal Lease Term,
          except that Annual Base Rent shall be adjusted at the commencement of
          each Renewal Lease Term to the greater of the then prevailing market
          rate for renewing tenants in similar buildings in Ashburn, Virginia as
          defined by independent, third party industrial/warehouse real estate
          broker licensed and in good standing in the Commonwealth of Virginia
          or 103% of the base rental for the month prior to the expiration of
          the term or the expiration of the Renewal Lease Term.

2.   ENVIRONMENTAL MATTERS

     A.   Tenant covenants that it will not cause or permit, knowingly, and
          Hazardous Wastes to be brought upon, disposed on or stored in or on
          the Premises or any Hazardous Material to be released in, on or about
          the Premises and that it will comply with any and all applicable laws,
          ordinance, rules regulations and requirements respecting the presence,
          use or release of Hazardous Materials in, on or about the Premises,
          unless otherwise set forth herein.

     B.   Tenant covenants that it will immediately notify Landlord, in writing,
          of any existing, pending or threatened (a) investigation, inquiry,
          claim or action by any governmental authority in connection with any
          Environmental Laws; (b) third party claims; (c) regulatory actions:
          and/or (d) contamination of the Premises.

     C.   Tenant shall, at Tenant's expense, investigate, monitor, re-mediate,
          and/or clean up any Hazardous Material, Hazardous Waste, or other
          environmental condition on, about, or under the Premises required as a
<PAGE>

          result of Tenant's use of Hazardous Material or occupancy of the
          Premises.

     D.   Tenant covenants that it shall keep the Premises free of any lien
          imposed pursuant to any Environmental Laws.

     E.   Tenant shall indemnify, defend and hold Landlord harmless from and
          against any and all claims, judgements, damages, penalties, fines,
          costs (including without limitation, actual and reasonable attorney's
          fees and court costs), liabilities or losses (collectively, the
          "Tenant Indemnified Claims") resulting from (i) the presence of
          Hazardous Wastes in or about the Premises (other than Hazardous Wastes
          present as of the date of this Lease which are covered by Landlord's
          indemnity in subparagraph (F) below) or the release of Hazardous
          Materials in, on or about the Premises on or after the date of this
          Lease, except to the extent that the Tenant Indemnified Claims are
          caused by Landlord, its agents, employees or contractors, and (ii) any
          Hazardous Waste placed or any Hazardous Substances released elsewhere
          in Laing at Beaumeade by Tenant, its agents, invitees, employees and
          contractors.

     F.   Landlord shall indemnify, defined and hold Tenant harmless from and
          against any and all claims, judgments, damages, penalties, fines,
          costs (including without limitation, actual and reasonable attorney's
          fees and court costs), liabilities or losses (collectively, the
          "Landlord Indemnified Claims") resulting from the presence of
          Hazardous Wastes in or on the Premises as of the date of this Lease or
          the release of Hazardous Materials in or on the Premises as of the
          date of this Lease or the release of Hazardous Materials in or on the
          Premises prior to the date of this Lease, except to the extent that
          the Landlord Indemnified Claims are caused by Tenant, its agents,
          employees, invitees or contractors.

     G.   The provisions of this Special Stipulation "3" shall survive the
          expiration or termination of this Lease.

     H.   Landlord represents that, to the knowledge of this individual(s)
          executing this Lease on behalf of Landlord, no "Hazardous Waste", as
          said term defined in the Resource Conversation and Response Act, as
          amended 42 U.S.C. (S)6901 et. seq. ("RCRA"), has been brought upon,
          disposed or stored in or on the premises, and no hazardous material as
          hereinafter defined has been released in or on the Premises.

     I.   For the purpose of this Lease, the term "Hazardous Material", is
          defined to include those matters described in the Environmental
          Response Compensation and Liability Act, as amended, 42 U.S.C. (S)6901
          et. seq. (CERCLA"). As used herein the term "Hazardous Materials"
          shall also mean (1) asbestos, or any substance containing asbestos;
          (2)
<PAGE>

          polychlorinated biphenyls; (3) lead; (4) radon; (5) pesticides; (6)
          petroleum or any other substances containing hydrocarbons; (7) any
          substance which, when on the Premises, is prohibited by any
          Environmental Laws; and (8) any other substance, material or waste
          which, (i) by any Environmental Laws requires special handling or
          notification of any governmental authority in its collection, storage,
          treatment, or disposal or (ii) is defined or classified as hazardous,
          dangerous or toxic pursuant to any legal requirement.

     J.   For purposes of this Lease, Environmental Laws shall mean; any and all
          federal, state and local laws, statues, codes, ordinances,
          regulations, rules or other requirements to human health or safety or
          the environment, including, but not limited to, those applicable to
          the storage, treatment, disposal, handling and release of any
          Hazardous Waste or Hazardous Materials, all as amended or modified
          from time to time.

3.   LANDLORD'S CONSTRUCTION CRITERIA. Tenant is granted the right to select and
     authorize a general contractor, (hereinafter referred to as "Tenant's
     Contractor") to construct any improvements to the Premises, subject to the
     provisions contained in Exhibit "H" (hereinafter referred to as
     "Construction Criteria"), attached hereto and hereby incorporated herein.
     All costs associated with any contemplated improvements to Premises by
     Tenant shall be the sole responsibility of Tenant.

4.   RIGHT OF FIRST OFFER. During the Term of the Lease and each Renewal Lease
     Term, the Tenant shall have a one time right of first offer to lease
     contiguous space (hereinafter referred to as the "Expansion Premises",
     illustrated in Attachment "A", attached hereto and hereby incorporated
     herein) prior to the Expansion Premises being leased to a third party, on
     the same terms and conditions then in effect under the Lease, expect as
     follows:

     (d)  the term of the Expansion Premises shall be for a minimum of thirty
          six (36) months. In the event Tenant elects to exercise the right of
          first offer, the lease term for the Leased Premises shall be extended
          so as to expire co-terminus with the Expansion Premises space.

     (e)  the rent for the Expansion Premises shall be equal to the annual cost
          per square foot currently in effect for the Leased Premises at the
          date of occupancy and shall adjust annually as stated in Exhibit "C"
          of the Lease and Paragraph One above.

     (f)  the Expansion Premises shall be leased in "as is" condition.

     (g)  Tenant shall pay One Hundred Percent (100%) of all costs incurred with
          preparing the Expansion Premises for Tenant's occupancy.
<PAGE>

Landlord shall notify Tenant when the Expansion Premises are available to be
leased.  Tenant shall then have ten (10) days in which to notify Landlord in
writing exercising Tenant's right to lease the Expansion Premises on the terms
described above.  If Tenant exercises the right to lease the Expansion Premises,
said lease shall commence the earlier of ninety (90) days after Tenant's notice
exercising the right, or the date the Expansion Premises is available for lease.
After Tenant validly exercises the right of first offer provided herein, the
parties shall execute a lease expansion agreement for the Expansion Premises
using the Landlord's standard document.

The foregoing right of first offer shall apply only with respect to the
Expansion Premises and may not be exercised with respect to any other space.  If
Tenant shall fall to exercise such right of first offer after notice by Landlord
as provided herein, Landlord may freely lease the Expansion Premises and the
foregoing right of first offer shall be of no further force or effect.  In the
event Landlord falls to lease the Expansion Premises to a third party within one
hundred eighty (180) days from receipt of Tenant's notice to not exercise its
right of first offer, Tenant's right of first offer shall be re-instated based
on the same terms and conditions as previously agreed to.  The foregoing right
of first offer shall be subject and subordinate to any other rights of tenants
to lease the Expansion Premises, if such rights have already been granted prior
to the date of this Lease.

If Tenant shall exercise the right of first offer granted herein, Landlord does
not guarantee that the Expansion Premises will be available on the commencement
date for the lease thereof for any reason beyond Landlord's reasonable control.
In such event, Rent with respect to the Expansion Premises shall be abated until
Landlord legally delivers the same to Tenant, as Tenant's sole recourse.

Tenant's exercise of such right of first offer shall not operate to cure any
default by Tenant of any of the terms or provisions in the Lease, nor to
extinguish or impair any rights or remedies of Landlord arising by virtue of
such default.  The right of first offer shall, at Landlord's election, be null
and void, if Tenant is in default under the lease on the date the Tenant
exercises its rights hereunder or at anytime thereafter, and prior to the
commencement of the Lease for the Expansion Premises.  If the Lease or Tenant's
right to possession of the Premises shall terminate in any manner whatsoever
before Tenant shall exercise the right herein provided, or if Tenant shall have
subleased the Premises, then immediately upon such termination or sublease, the
right of first offer herein granted shall simultaneously terminate and become
null and void.  Such right is personal to Tenant.  Under no circumstances
whatsoever shall the subtenant under a sublease of the Premises have any right
to exercise the right of first offer granted herein unless such subtenant is a
wholly owned subsidiary of Tenant.  Tenant agrees that time in giving notices
hereunder is of the essence of this provision.

5.   RIGHT OF FIRST OFFER TO LEASE SPACE IN FUTURE BUILDING. Provided the Lease
     is not in default and Landlord elects to develop, construct and lease to
     the general public a fifth building immediately adjacent to [*], Ashburn,
     Virginia, Tenant shall have a one time right of first offer to lease 10,000
     or more square feet in the proposed building (hereinafter referred to as
     the

*CONFIDENTIAL TREATMENT REQUESTED. CONFIDENTIAL PORTION HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

<PAGE>

     "Future Premises", illustrated in Attachment "B", attached hereto and
     hereby incorporated herein) prior to the building being offered to lease to
     the general public on the same terms and conditions then in effect under
     the Lease, except as follows:

     (a)  the term of the Lease for the Future Premises shall be for a minimum
          of sixty (60) months. In the event Tenant elects to exercise the right
          of first offer, the lease term for the Leased Premises shall be
          extended so as to expire co-terminus with the Expansion Premises
          space. In the event the Tenant elects to exercise the right of first
          offer to lease the entire Future Premises, the lease term for the
          Leased premises shall be terminated so as to expire with Tenant's
          occupancy of the Future Premises.

     (b)  the rent for the Future Premises shall be equal to the annual cost per
          square foot  currently in effect for like warehouse buildings in the
          Ashburn, Virginia sub-market at the date of occupancy and shall adjust
          annually.

     (c)  the Future Premises shall be leased in "as is" condition.

     (d)  Tenant shall pay One Hundred Percent (100%) of all costs incurred with
          preparing the Future Premises for Tenant's occupancy.

Landlord shall notify Tenant seven (7) months in advance of when the Future
Premises are available to be leased.  Tenant shall then have thirty (30) days in
which to notify Landlord in writing exercising Tenant's right to lease the
Future Premises on the terms described above.  If Tenant exercises the right to
lease the Future Premises, said lease shall commence on the date the Future
Premises is available for lease.  After Tenant validly exercises the right of
first offer provided herein, the parties shall execute a lease agreement for the
Future Premises.  After Tenant validly exercised the right of first offer
provided herein, Tenant shall have the option to participate in the design,
planning, and construction of the portion of the Future Premises which Tenant
leases in order to prepare the leased premises for installation of Tenant's
equipment.  Under no circumstances whatsoever shall Tenant's participation
interfere with Landlord's ability to design, plan and construct the Future
Premises for lease to the general public.

The foregoing right of first offer shall apply only with respect to the Future
Premises and may not be exercised with respect to any other space.  If Tenant
shall fail to exercise such right of first offer after notice by Landlord as
provided herein, Landlord may freely lease the Future Premises and the foregoing
right of first offer shall be of no further force or affect.  The foregoing
right of first offer shall be subject and subordinate to any other rights of
tenants to lease the Future Premises, if such rights have already been granted
prior to the date of this Lease.

If Tenant shall exercise the right of first offer granted herein, Landlord does
not guarantee that the Future Premises will be available on the commencement
date for the lease thereof for any reason beyond Landlord's reasonable control.
In such event, Rent
<PAGE>

with respect to the Future Premises shall be abated until Landlord legally
delivers the same to Tenant, as Tenant's sole recourse.

Tenant's exercise of such right of first offer shall not operate to cure any
default by Tenant of any of the terms or provisions in the Lease, nor to
extinguish or impair any rights or remedies of Landlord arising by virtue of
such default.  The right of first offer shall, at Landlord's election, be null
and void, if Tenant is in default under the lease on the date the Tenant
exercises its rights hereunder or at any time thereafter, and prior to the
commencement of the Lease for the Future Premises.  If the Lease or Tenant's
right to possession of the Leased Premises shall terminate in any manner
whatsoever before Tenant shall exercised the right herein provided, or if Tenant
shall have subleased the Leased Premises, then immediately upon such termination
or sublease, the right of first offer herein granted shall simultaneously
terminate and become null and void.  Such right is personal to Tenant.  Under no
circumstances whatsoever shall the subtenant under a sublease of the Leased
Premises have any right to exercise the right of first offer granted herein.
Tenant agrees that time in giving notices hereunder is of the essence of this
provision.
<PAGE>

                                  EXHIBIT "G"

                            ROOF LICENSE AGREEMENT


          THIS AGREEMENT made as of this 18/th/ day of November, 1998 between
                                         -----        --------------
Laing Beaumeade, Inc. ("Licensor") and Equinix, Inc. ("Licensee"), having an
---------------------                  -------------
address at [*], Suite C, Ashburn, Virginia  20147.
           --------------------------------------

          1.   Premises and Duration. Licensor hereby grants to Licensee a
               license, subject to the terms and conditions herein set forth, to
               use certain premises shown on the drawing attached hereto as
               Exhibit A ("Roof Premises") located on the roof ("Roof") of the
               building known as Laing at Beaumeade ("Building") located at
                                 ------------------
               [*], Ashburn, Virginia 20147 for the purposes described in
               ----------------------------
               paragraph 4. below. The term of the license (the "Term") shall
               commence on [*] ("Commencement Date") and terminate on
                           ---
               January 31, 2009 ("Termination Date") unless terminated prior
               ----------------
               thereto as hereinafter provided.

          2.   Rent.  On or before the first day of each month of the Term,
               Licensee shall pay Licensor Base Rent in the amount of [*]
                                                                      ---
               Dollars ($[*]). Base Rent shall be prorated for any partial
                         ---
               month at the rate of 1/30/th/ of the monthly amount. Base Rent
               shall be subject to Base Rent Escalations, as described in
               Paragraph 5. In addition to Base Rent, Licensee shall pay for
               electricity consumed in the Roof Premises, as described in
               Paragraph 22.

          3.   Security Deposit. Upon its execution of this Agreement, Licensee
               shall pay the amount of [*] Dollars $[*] ("Security Deposit")
               to Licensor.

          4.   Use. Licensee shall use the Roof Premises for the installation,
               maintenance, use and removal of the following items (the
               "Items"): any and all antenna, transmit and/or receiving
                         ----------------------------------------------
               equipment, cabling and appurtenances as necessary to utilize roof
               -----------------------------------------------------------------
               space for Licensee's intended use, and for no other purpose.
               ---------------------------------
               Licensee shall not use the Roof Premises or the Items so as to
               interfere in any way with the ability of other occupants of the
               Building or occupants of other buildings to receive radio,
               television, telephone, short-wave, long-wave or other signals of
               any sort, nor so as to interfere with the use by Licensor or such
               occupants of electric, electronic or other facilities, equipment,
               appliances, personal property and fixtures, nor so as to
               interfere in any way with the use of any antennae, satellite
               dishes or other electronic or electric equipment or facilities

_____________________

*CONFIDENTIAL TREATMENT REQUESTED.  CONFIDENTIAL PORTION HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION.
<PAGE>

               currently or hereafter located on the Roof or any other floor or
               area of the Building or other buildings. Licensee shall not use
               the Premises in any way so as to increase Licensor's insurance
               payments, and at Licensor's option shall pay such increases. The
               location of the Items within the Premises shall be subject to
               Landlord's advance written approval.

          5.   Indemnity and Insurance.  Licensee shall indemnify, defend and
               save harmless Licensor and its partners, trustees, beneficiaries,
               directors, officers, employees, affiliates and agents
               ("Indemnitees") from and against any and all claims and/or
               liability resulting from any act or omission of Licensee and/or
               Licensee's installation (including without limitation, damage
               cause by over stress), use, maintenance or removal of the items
               or use of the Roof Premises or Building. It is understood and
               agreed that all items kept, stored or maintained on the Roof
               Premises shall be so kept, stored or maintained at the sole risk
               of Licensee. Licensee shall notify its insurance carriers of this
               License Agreement and shall obtain any additional coverage or
               increase its policy limits as necessary to fully cover any loss
               relating to the Items, or Licensee's installation, use,
               maintenance or removal of the Items, or use of the Roof Premises.
               Licensee hereby waives all rights of subrogation of its insurers
               with respect to claims against the Indemnitees. Tenant shall
               maintain comprehensive general liability insurance with at least
               $2,000,000 combined single limit per occurrence, with the
               Indemnitees as additional insureds, workers compensation coverage
               in statutory amounts, and employer's liability insurance of at
               least $500,000 per occurrence.

          6.   Access to Premises.  Licensor shall permit Licensee reasonable
               access to the Roof Premises for the purposes permitted hereunder,
               during normal business hours at the Building upon reasonable
               advance notice and scheduling through Licensor's management and
               security personnel. Access after normal business hours may be
               granted by Licensor in its sole discretion and for such
               reasonable charges as Licensor shall impose. Licensor reserves
               the right to enter the Roof Premises, without notice, at any time
               for the purpose of inspecting the same, or of making repairs,
               additions, or alterations to the Building, and to exhibit the
               Roof Premises to prospective tenants, purchasers, or others, or
               for any other reason not inconsistent with Licensee's right
               hereunder. In connection with exercising such rights, Licensor
               may, if reasonably necessary temporarily disconnect and/or move
               the Items without liability to Licensee. The exercise by Licensor
               of any of its rights under this Paragraph shall not be deemed an
               eviction or disturbance of Licensee's use of the Roof Premises.
<PAGE>

          7.   Installation, Use, Alterations and Removal. Licensee shall not
               install the Items, or thereafter make any alterations, additions
               or improvements to the Roof Premises or the Items without
               Licensor's prior written consent. Licensee acknowledges that it
               has inspected the Roof Premises and agrees to accept the same "as
               is". Licensor shall approve or reject the proposed installation
               of the Items within a reasonable time after Licensee submits (1)
               plans and specifications for the installation of the Items, (2)
               copies of all required governmental and quasi-governmental
               permits, licenses, and authorizations which Licensee will obtain
               at its own expense, and (3) a certificate of insurance evidencing
               the coverage required herein. Licensor may withhold approval if
               the installation or operation of the Items may damage the
               structural integrity of the Building, interfere with any service
               provided by Licensor or any occupant, reduce the amount of
               leasable space in the Building, detract from the appearance of
               the Building, or for any other reasonable ground. Licensor may
               require that any installation or other work be done under the
               supervision of Licensor'' employees or agents, and in a manner so
               as to avoid damage to the Building. Upon termination of this
               Agreement, by expiration or otherwise, Licensee shall disconnect
               and remove the Items and fully repair and restore the Roof
               Premises to the same or a better condition that prior to this
               Agreement, ordinary wear and tear, and damage from fire or other
               casualty not the fault of Licensee excepted. Licensee shall
               promptly and properly repair during the Term and upon termination
               of this Agreement any roof leaks or other damage or injury to the
               Roof, the Building or the Roof Premises caused by Licensee's use
               of the Roof Premises or its installation, use, maintenance or
               removal of the Items. If Licensee does not immediately repair any
               such leaks, damage or injury or does not remove the Items when so
               required, Licensee hereby authorizes Licensor to make such
               repairs or remove and dispose of the Items and charge Licensee
               for all costs and expenses incurred in doing so. Licensor shall
               not be liable for any property so disposed of or removed by
               Licensor.

          8.   Assignment and Sublicensing. Licensee shall not, by operation of
               law or otherwise, assign or otherwise transfer or encumber this
               License or the rights granted hereunder, or sublicense the whole
               or any part of the Roof Premises. Licensee may not let any other
               party tie into or use the Items or the Roof Premises, and
               Licensee may not transmit or distribute signals through the Items
               to any parties not affiliated with Licensee. Any such transfer
               without Licensor's consent shall at Licensor's option be null,
               void and of no effect. If Licensee desires to assign or
               sublicense, Licensor may consent to the same in its absolute
               discretion and upon such terms and conditions as Licensor may
               impose. In the alternative,
<PAGE>

               Licensor may elect to terminate this Agreement, by written notice
               to Licensee within thirty (30) days after receiving Licensee's
               request for approval. Notwithstanding anything to the contrary in
               this Paragraph 8, Licensee may, without Landlord's prior consent
               and without Landlord's participation in any proceeds, sublet the
               Roof Premises or assign the license agreement to: (i) a
               subsidiary, affiliate, division or corporation controlling,
               controlled by or under common control with Licensee; (ii) a
               successor corporation related to Licensee, by merger,
               consolidation, non bankruptcy reorganization, or governmental
               action; or (iii) a purchaser of substantially all of Licensee's
               assets located in the Roof Premises. For the purpose of this
               License Agreement, sale of Licensee's capital stock through any
               public exchange shall not be deemed an assignment, subletting or
               any other transfer of the License Agreement or the Roof Premises.

          9.   License. The interest herein created is a license and no
               leasehold or tenancy is intended to be or shall be created
               hereby. Licensor, at its sole option may require Licensee to
               terminate operation of the Items, if Licensee or the Items is
               causing physical damage to the Building, if Licensee or the Items
               is disturbing or annoying any other occupant of the Building, or
               if Licensee defaults in any other way under this Agreement.

          10.  Entire and Binding Agreement. This Agreement contains all of the
               agreements between the parties relating to the Roof Premises and
               Items, and may not be modified in any manner other than by
               agreement, in writing, signed by both parties. The terms,
               covenants and conditions contained herein shall inure to the
               benefit of and be binding upon Licensor, Licensee and their
               successors and assigns, except as provided herein.

          11.  Heavy Objects. Licensee shall not bring into or install in the
               Roof Premises any objects, including the Items contemplated
               hereunder, the weight of which, singularly or in the aggregate,
               would exceed the maximum safe load per square foot of the Roof
               Premises. Licensee shall engage and cause a licensed and
               qualified engineer to certify the same to Licensor before
               Licensee shall install, affix or place the Items upon the Roof
               Premises.

          12.  Applicable Law. This Agreement shall be construed in accordance
               with the laws of the Commonwealth of Virginia.

          13.  Execution and Delivery. The submission of this Agreement for
               examination or execution does not constitute an offer or
               reservation of any option for the Roof Premises, and this
<PAGE>

               Agreement shall become effective only upon execution and
               delivery thereof by both parties.

          14.  Defaults.  In addition to any other specified herein, it shall be
               a default hereunder if Licensee vacates or abandons the Items or
               the Roof Premises for more than ten (10) consecutive days. In the
               event of any default which is not cured within five (5) days
               after written notice by Licensor, Licensor shall have the right
               to terminate this Agreement and recover the possession of the
               Roof Premises through peaceful self-help, forcible detainer
               proceedings or any other lawful means, and to recover all damages
               and losses sustained as a result of such default and termination
               of this Agreement, including without limitation loss of Rent that
               would otherwise be received hereunder. In the event of default,
               Licensor shall also have the right to discontinue providing
               electricity to the Roof Premises. In the event of any litigation
               between the parties, the prevailing party shall be entitled to
               receive its reasonable attorney's fees and costs as part of the
               judgment.

          15.  Recording.  Licensee shall not record this Agreement.

          16.  Lease. Any default under this Agreement shall be a default under
               the Lease, and any default under the Lease shall be a default
               under this Agreement.
<PAGE>

         EXHIBIT A TO EXHIBIT G, ROOF LICENSE AGREEMENT OF LEASE DATED
         NOVEMBER 18, 1998 BETWEEN LAING BEAUMEADE, INC. AND EQUINIX,
                     INC. SHOWING ROOF AREA CROSS HATCHED


                            [Graphic of Roof Area]
<PAGE>

                                  EXHIBIT "H"

                             CONSTRUCTION CRITERIA
     I.   REQUIREMENTS FOR TENANT PERFORMANCE OF TENANT CONSTRUCTION

1.        Proposed plans/scope of work shall be submitted to Landlord for review
          and approval prior to commencement of work.

2.        Tenant's selection of Contractors shall meet Landlord's approval
          criteria.

3.        Tenant's Contractors shall comply with Landlord's rules for working on
          the property.

4.        At completion of work, Tenant shall furnish Landlord with the
          following:

          a)  lien waivers, in a form satisfactory to Landlord, certifying that
               Contractors have been paid in full for work completed.

          b)  a copy of the "Occupancy Permit" from Loudoun County, Virginia.

II.       APPROVAL CRITERIA FOR TENANT CONTRACTORS

1.        Must have been in business a minimum of three (3) years operating
          under the same name.

2.        Must have a substantial history of successful Tenant work.

3.        Must have a history of performance of Tenant work quality equal to
          that proposed for the building.

4.        Must have a good credit history and be financially sound.

5.        Must meet Landlord's insurance requirements and supply Landlord with
          appropriate Certificates of Insurance.

6.        Tenant's Contractor must comply with the rules for operating on the
          property.

III.      CONTRACTOR'S INSURANCE REQUIREMENTS

1.   Prior to execution of contract agreements and commencing of work, all
     Tenant Contractors shall provide to Landlord a Certificate of Insurance
     indicating the following coverage and limits, and providing for a Thirty
     (30) Day Notice of Cancellation to Landlord of the stated policies or
     changes to coverage or limits.

2. Minimum Required Coverage and Limits:
<PAGE>

     A.   Comprehensive General Liability

          Minimum $500,000 combined single limit. (B.1. and P.D. combined).

     B.   Comprehensive Automobile Liability

          Minimum $500,000 combined single limit.

     C.   Umbrella Liability

          Minimum $1,000,000 combined single limit.

     D.   Worker's Compensation

          Statutory for the Commonwealth of Virginia and domicile of the
          Subcontractor.

     E.   Employer's Liability

          $100,000

     III. Public Liability Insurance shall be provided on the basis described
          below:

     A.   Comprehensive Automobile Liability Insurance
          --------------------------------------------

     1.   All owned or licensed vehicles.

     2.   All hired vehicles.

     B.   Comprehensive General Automobile Liability Insurance
          ----------------------------------------------------

          1.   Premises - Operations Liability

          2.   Independent Contractor's Protective Liability

          3.   Products and Completed Operations Liability

          4.   Personal Injury Coverage (employee exclusion eliminated)

          5.   "X, C, and U" Hazards

          6.   Broad Form Property Damage

          7.   Contractual Insurance

IV.       SPECIAL CONDITIONS - LOW-RISE BUILDINGS
<PAGE>

          1.   Clean-up of construction areas is to be performed on a daily
               basis. Public areas are to be kept clean at all times. Outside
               areas are to be kept clean at all times including the sweeping
               and hosing down of asphalt and walkways after deliveries.

          2.   Construction work of a loud nature, such as concrete coring or
               hammer drilling, is strictly prohibited during the weekday hours
               of 8:00 a.m. to 6:00 p.m. Screw guns are not to be used on
               demising walls during these hours as well.

          3.   Any welding and/or use of cutting torches shall be performed in
               strict adherence of OSHA Standards. This work shall only be
               performed in the presence of a Tenant Construction Management
               representative or Tenant's General Contractor Site Supervisor. A
               fire extinguisher shall be readily accessible in case of fire.
               Fireproof blankets are to be placed over combustibles in the
               area.

          4.   All construction employees are to park away from buildings so as
               not to interfere with tenant parking. No parking in visitors,
               maintenance, or handicapped spaces will be permitted.

          5.   If construction workers use utility sinks for clean-up, they are
               to clean the sink after usage. Use of toilet vanities for
               cleaning tools is prohibited. Do not use the utility sinks for
               the disposal of paint or sheet rock mud. Parking lot catch basins
               are not to be used for disposal of any cementatious waste, paint,
               sheet rock mud, etc.

          6.   No dumping of any kind is permitted on the development grounds.

          7.   Do not leave drink cans, bottles, etc sitting in the window
               sills. Put them in trash containers.

          8.   Raise blinds in the construction areas prior to commencement of
               work. Return to down position and clean upon completion.

          9.   Construction workers are to be fully clothed at all times.

          10.  No blaring radios are allowed. Definition of blaring shall be
               determined by the Tenant Coordinator and/or the Property Manager.

          11.  Contractor shall furnish his own cleaning equipment and supplies.

          12.  No equipment or materials shall be left sitting in public areas.

          13.  Tenant Coordinating Contractor shall furnish a portable toilet
               for the use of tenant construction personnel. Personnel are not
               to use the toilets of existing tenants.
<PAGE>

          14.  Tenant construction personnel are prohibited from using the
               phones of existing tenants.

          15.  Tenant construction personnel are to use rear doors of suite
               being constructed and under no circumstances is the front door to
               be used. Front door is to be kept locked at all times.

          16.  When demolition of an existing space occurs, the electrical
               contractor is responsible for removing all old phone lines and
               equipment. Care is to be taken to avoid removing lines for other
               tenants that may be in use. This cost is to be included in the
               contractor's bids.

          17.  Utility Interruption Procedures
               -------------------------------

               Contractor or Subcontractor, its employees, and assigns shall NOT
                                                                             ---
               disrupt any building or tenant utility, including but not limited
               to electrical, water, gas, telephone, sewer and elevator service,
               during the hours of 7:30 a.m. and 5:30 p.m. without the prior
               written approval of Laing Properties, Inc.  Additionally,
               Contractor or Subcontractor must give Laing Properties, Inc.
               twenty-four (24) hours verbal notice of any building or tenant
               utility disruption to occur between the hour of 5:30 p.m. and
               7:30 a.m.

          18.  Site Excavation Procedures
               --------------------------

               Any Contractor or Subcontractor planning to perform excavation
               work on a Laing Properties project MUST arrange to have all
               utilities located by the appropriate agency as well as arranging
               with Laing Properties to locate Laing's underground structures,
               including but not limited to irrigation, communication and power
               lines, prior to starting excavation.  Written authorization just
               be obtained from Laing Properties after all subsurface structures
               are located and prior to starting excavation.

          19.  Liquidated Damage Clause - Utilities and Site Excavation
               --------------------------------------------------------

               In consideration of the fact that actual damage for utility
               interruptions is difficult to estimate or compute, Contractor and
               Subcontractor agrees that a $500,000 per occurrence liquidated
               damage will be assessed against Contractor or Subcontractor for
               failure to give proper notice or obtain authorization and/or an
               $1,000.00 per occurrence liquidated damage will be assessed
               against Contractor or Subcontractor for an unauthorized
               interruption of utility service.
<PAGE>

                                  EXHIBIT "I"

            SUBORDINATION, NON-DISTURBANCE AND ATTORNMENT AGREEMENT
            -------------------------------------------------------

          THIS AGREEMENT made as of the _______ day of __________________,
________ among ______________________ a national banking association chartered
pursuant to the laws of the United States of America (hereinafter referred to as
"Lender"), EQUINIX, INC., a California corporation (hereinafter referred to as
"Tenant"), and LAING BEAUMEADE, INC., a Georgia corporation, (hereinafter
referred to as the "Landlord").

                                  WITNESSETH

          WHEREAS, Landlord and Tenant have entered into a certain lease
(hereinafter referred to as the "Lease") executed as of November 18, 1998
                                                        -----------------
relating to a portion of the premises (the "Demised Premises") described in

Exhibit A attached hereto and by this reference made a part hereof (hereinafter
---------
referred to as the "Premises"); and

          WHEREAS, Lender has made or has committed to make a loan to Landlord
in the principal amount of $______________ secured by a deed of trust
(hereinafter referred to as the "Mortgage"), including an assignment of leases
and rents from Landlord to Lender, covering the Premises; and

          WHEREAS, Tenant has agreed that the Lease shall be subject and
subordinate to the Mortgage held by Lender, provided Tenant is assured of
continued occupancy of the Demised Premises under the terms of the Lease;

          NOW, THEREFORE, for and in consideration of the mutual covenants
herein contained, the sums of Ten Dollars ($10.00) and other good and valuable
considerations, the receipt and sufficiency of which are hereby acknowledged,
and notwithstanding anything in the Lease to the contrary it is hereby agreed as
follows.

1.   Lender, Tenant and Landlord do hereby covenant and agree that the Lease
     with all rights opinions, liens and charges created thereby, is and shall
     continue to be subject and subordinate in all respects to the Mortgage and
     to any renewals, modifications, consolidations, replacements and extensions
     thereof and to all advancements made thereunder.

2.   Lender does hereby agree with Tenant that, in the event Lender becomes the
     owner of the Premises by foreclosure, conveyance in lieu foreclosure or
     otherwise, so long as Tenant complies with and performs its obligations
     under the Lease, (a) Lender will take no action which will interfere with
     or disturb Tenant's possession or use of the Demise Premises or other
     rights under the Lease, and (b) the Demised Premises shall be subject to
     the Lease and Lender shall recognize Tenant as the tenant of the Demised
     Premises for the remainder of the term of the Lease in accordance with the
     provisions thereof, provided, however, that Lender shall not be subject to
     any offsets or defenses which Tenant might have against
<PAGE>

     any prior landlord except those which arose under the provisions of the
     Lease out of such landlord's default and accrued after Tenant had notified
     Lender and given Lender the opportunity to cure same as hereinbelow
     provided, nor shall Lender be liable for any act or omission of any prior
     landlord, nor shall Lender be bound by any rent or additional rent which
     Tenant might have paid for more than the modification of the Lease made
     without its consent.

3.   Tenant does hereby agree with Lender that in the event Lender becomes the
     owner of the premises by foreclosure, conveyance in lieu of foreclosure or
     otherwise, then Tenant shall attorn to and recognize Lender as the landlord
     under the Lease for the remainder of the term thereof; and Tenant shall
     perform and observe its obligations thereunder, subject only to the terms
     and conditions of the Lease. Tenant further covenants and agrees to execute
     and deliver upon request of Lender or its assigns, an appropriate agreement
     of attornment to Lender and any subsequent titleholder of the Premises.

4.   So long as the Mortgage remains outstanding and unsatisfied, Tenant will
     mail or deliver to Lender, at the address and in the manner hereinbelow
     provided, a copy of all notices permitted or required to be given to the
     landlord by Tenant under and pursuant to the terms and provisions of the
     Lease. At any time before the rights of the landlord shall have been
     forfeited or adversely affected because of any default of the landlord, or
     within the time permitted the landlord for curing any default under the
     Lease as therein provided (but not less than sixty (60) days from the
     receipt of notice), Lender may, but shall have no obligation to, pay any
     taxes and assessments, make any repairs and improvements, make any deposits
     or do any other act or thing required of the landlord by the terms of the
     Lease; and all payments so made and all things so done and performed by
     Lender shall be as effective to prevent the rights of the landlord from
     being forfeited or adversely affected because of any default under the
     Lease as the same would have been if done and performed by the landlord.

5.   Tenant acknowledges that Landlord will execute and deliver to Lender an
     assignment of the Lease as security for said loan, and Tenant hereby
     expressly consents to such assignment.

6.   Landlord and Tenant hereby certify to Lender that the Lease has been duly
     executed by Landlord and Tenant and is in full force and effect, that the
     Lease and any modifications and amendments specified herein are a complete
     statement of the agreement between Landlord and Tenant with respect to the
     leasing of the Demised Premises, and the Lease has not been modified or
     amended except as specified herein; that to the knowledge of Landlord and
     Tenant, no party to the Lease is in default thereunder; that no rent wider
     to the Lease has been paid more than thirty (30) days in advance of its due
     date; and that Tenant, as of this date, has no charge, lien or claim of
     offset under the Lease, or otherwise, against the rents or other charges
     due or to become due thereunder.
<PAGE>

7.   Unless and except as otherwise specifically provided herein, any and all
     notices, elections, approvals, consents, demands, requests and responses
     thereto ("Communications") permitted or required to be given under this
     Agreement shall be in writing, signed by or on behalf of the party giving
     the same, and shall be deemed to have been properly given and shall be
     effective upon the earlier of receipt thereof or deposit thereof in the
     United States mail, postage prepaid, certified with return receipt
     requested, to the other party at the address of such other party set forth
     hereinbelow or at such other address within the continental United States
     as such other party may designate by notice specifically designated as a
     notice of change of address and given in accordance herewith; provided,
     however, that the time period in which a response to any Communication must
     be given shall commence on the date of receipt thereof, and provided
     further that no notice of change of address shall be effective with respect
     to Communications sent prior to the time of receipt thereof. Receipt of
     Communications hereunder shall occur upon actual delivery whether by mail,
     telecopy transmission, messenger, courier service, or otherwise, to an
     individual party or to an officer or general or limited partner of a party
     or to any agent or employee of such party at the address of such party set
     forth hereinbelow, subject to change as provided hereinabove. An attempt
     delivery in accordance with the foregoing, acceptance of which is refused
     or rejected, shall be deemed to be and shall constitute receipt; and an
     attempted delivery in accordance with the foregoing by mail, messenger, or
     courier service (whichever is chosen by the sender) which is not completed
     because of changed address of which no notice was received by the Lender in
     accordance with this provision prior to the sending of the Communication
     shall also be deemed to be and constitute receipt. Any Communication, if
     given to Lender, must be addressed as follows, subject to change as
     provided hereinabove and, if given to Tenant, must be addressed as follows,
     subject to change as provided hereinabove:

                     EQUINIX, INC.
                     [*], Suite C
                     Ashburn, Virginia 20147
                     Attention: Branch Manager

and, if given to landlord, shall be addressed as follows:

                     Laing Beaumeade, Inc.
                     5901 B Peachtree Dunwoody Road, Suite 555
                     Atlanta, Georgia 30328
                     Attention: Robert K. Stubbs, Esq.

8.   This Agreement shall be binding upon and inure to the benefit of the
     parties hereto and their respective heirs, legal representatives,
     successors, successors-in-title and assigns. When used herein, the term
     "landlord" refers to Landlord and to any successor to the interest of
     Landlord under the Lease.

_____________________

*CONFIDENTIAL TREATMENT REQUESTED.  CONFIDENTIAL PORTION HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION.
<PAGE>

IN WITNESS WHEREOF, the parties hereto have executed this Agreement under seal
of the date first above written.

                                  LENDER:


                                  By: ___________________________________

                                  Title: ________________________________

                                  [BANK SEAL]

                                  TENANT:  EQUINIX, INC.,
                                  a California corporation

                                  By: ___________________________________

                                  Title: ________________________________

                                  Attest: _______________________________

                                  Title: ________________________________


                                  LANDLORD:  LAING BEAUMEADE, INC.,
                                  a Georgia corporation

                                  By: ___________________________________

                                  Title: ________________________________

                                  Attest: _______________________________

                                  Title: ________________________________
<PAGE>

                                  EXHIBIT "J"


                  LANDLORD'S APPROVED GENERAL CONTRACTOR LIST

1.   Fox Seko, 485 Spring Park  Place, Herndon, Virginia 22071; telephone
     703/904-2700; contract Jeff Roberts

2.   Fisher and Stracban, 11820 Coakley Circle, Rockville, Maryland 20852;
     telephone 301/881-6797; contact Richard Strachan

3.   J. R. Austin Co., 4981 Montgomery Lane, Bethesda, Maryland 20814; telephone
     301/657-7600; contact Scott Austin

4.   Kfoury Construction Group, 11307 Sunset Hills Road, Reston, Virginia 22090;
     telephone 703/736-100; contact Jeff Martello

5.   The Leapley Company, 1724 Kalorama Road, N.W., Washington, D.C. 20009;
     telephone 202/483-1800; contact Dennis Leapley

6.   G & F Associates, 3920 University Drive, Fairfax, Virginia 22030; telephone
     703/293-7000; contact Mark Geminyani

7.   R. W. Murray Co., 4511-A Daly Drive, Chantilly, Virginia 20151; telephone
     703/818-0980; contact Chuck Loving

8.   K. F. Brumback Construction Corporation, 323 Seneca Road, Great Falls,
     Virginia 22066; telephone 703/450-2725; contact Ken Brumback

9.   Minkoff Company, Inc., 5223 River Road, Bethesda, Maryland 20816; telephone
     301/652-8711; contact Jim Lippert

10.  Tucon Construction, 105 Executive Drive, Suite 200, Dulles, Virginia 20166;
     telephone 703/478-3500; contact Scott Houston

11.  Willett Custom Printing and Construction, Inc., P.O. Box 244, Port Tobacco,
     Maryland 20677; telephone 301/645-9638; contact Chris Willett

                                      39
<PAGE>

                                  EXHIBIT "K"

                          Special Tenant Requirements
                          ---------------------------

     Landlord and Tenant hereby agree that, notwithstanding anything contained
in the Lease to the contrary, the provisions set forth below shall be included
as part of the Lease and shall supersede any inconsistent provisions of the
Lease.  All references in the Lease and in this Exhibit to the Lease shall be
construed to mean the Lease (and all exhibits thereto), as amended and
supplemented by the Exhibit.  All terms not otherwise defined in the Exhibit
shall have the same meanings as set forth in the Lease.

     1.   Use.

          1.1  Tenant's Use of Premises and Buildings and Land.  Tenant is
               -----------------------------------------------
permitted (a) to construct, maintain, operate and repair electronic,
transmitting and receiving equipment and supporting structures on the Premises,
including the roof of the Building, (b) to construct, maintain, operate and
repair an equipment room on the Premises, including the construction of an
upgraded fire suppression system which shall be a dry pipe, pre-action water
based system and Tenant reserves the right to install an environmentally
approved, gas, fire suppression system, (c) to install, upgrade, maintain,
operate, and repair utility lines, transmission lines, and telecommunications
conduit and cabling (collectively, the "Conduits") in such locations on the
Building and Land as set forth in plans and specifications, which shall be
subject to Landlord's approval which shall not be unreasonably withheld,
conditioned or delayed, (d) reasonable ingress and ogress over existing roadways
on the Land for Tenant's truck and other vehicles, to maintain Tenant's
equipment, and the Conduits (collectively, "Equipment"). The Equipment shall
include, without limitation, the antenna, batteries, uninterruptible power
supply and such other equipment necessary thereto. Tenant shall have access to
and use of Premises, the Building and Land and the Conduits, 24 hours per day,
365 days per year.

          1.2  Tenant's Use of Conduit Ducts.  Tenant shall have the right to
               -----------------------------
install, maintain, operate and repair the Conduits in any of Landlord's conduit
ducts located on the Building and Land, so long as Tenant's use of the Conduits
does not Interfere with Landlord's use of Landlord's conduit ducts located on
the Building and Land, if required for provisioning of any utility service
provider to the building. Tenant will install separate conduit where applicable.

     2.   Compliance With Law.  Nothing contained in this Exhibit shall in any
          -------------------
way limit or negate Tenant's obligation to comply with laws in accordance with
the terms of the Lease.

     3.   Initial Installation and Testing.  Tenant shall have the right, at
          --------------------------------
Tenant's sole cost and expense, at any time following the execution of this
Lease by Tenant in a form mutually acceptable to Landlord and Tenant, to enter
upon the Building and Land and to carry out any tests, inspections, pre-
installation activities on the Building and Land as necessary for the
construction and installation of the Equipment, including without limitation,
engineering and environment surveys, physical inspections, soil test borings,
and underground trenching. Immediately following the completion of such tests,
inspections, or pre-installation activities, Tenant shall, at Tenant's sole cost
and expense, repair any damage to the Building ad Land

                                      40
<PAGE>

caused by such inspections or pre-installation activities, including re-paying
and re-landscaping any affected areas of the Building and Land. Any such entry
onto the Building and Land prior to the Commencement Date of the Lease shall be
on all of the terms and provisions of the Lease, expected for Tenant's
obligation to pay rent.

     4.   Equipment Ownership Surrender.  The Equipment shall be the property
          -----------------------------
of and owned by Tenant throughout the Lease Term, and shall in all event be
deemed trade fixtures, even if affixed to the Premises or Building or Land. On
or before the Expiration Date or earlier termination of this Lease. Tenant shall
remove its Equipment from the Premises and Building and Land and restore the
Leased Premises as outlined in Paragraph 13 (n) of this Lease. Landlord hereby
expressly waives and releases any and all contractual liens and security
interests or constitutional and/or statutory liens and security interests
arising by operation of law or under the Lease to which Landlord might now or
hereafter be entitled on any of the Equipment, Tenant's HVAC Unit or Tenant's
Generator. Landlord further agrees that the Equipment, Tenant's HVAC Unit, and
Tenant's Generator shall be exempt from execution, foreclosure, sale, levy,
attachment, for any Tenant default hereunder, and that the Equipment, Tenant's
HVAC Unit, and Tenant's Generator may be removed at any time from the Premises
or the Building and Land by Tenant.

     5.   Emergency Power Generator.  Tenant shall have the right, at any time
during the Lease Term, at Tenant's option and at Tenant's sole cost and expense:
(a) install and emergency power generators ("Tenant's Generator") on the Leased
Premises as noted on Exhibit A, in such location as reasonably approved by
Landlord, to provide back-up emergency power for the Equipment and for Tenant's
HVAC Unit, and (b) store fuel, above ground, on the Premises or elsewhere as
noted in Exhibit A, in such locations as reasonably approved by Landlord, in
such amounts as Tenant reasonably determines necessary for Tenant's Generator.

     6.   No Interference:  Relocation.
          ----------------------------

          6.1  No Interference.  Neither Landlord nor any of Landlord's agents,
               ---------------
employees, or contractors (collectively, the "Landlord Parties") shall interfere
in any way with the Equipment or with Tenant's access to the Equipment and
Antennas, the Conduits, Tenant's HVAC Unit, or Tenant's Generator (the
"Interference"). Landlord agrees that prior to Landlord's carrying out any
construction, maintenance or repair activities on the Land in the vicinity of,
the Antennas, the Conduits, Tenant's HVAC Unit, or Tenant's Generator (if such
are not located within the Premises), Landlord shall provide three (3) days'
prior written notice of Landlord's or Landlord Parties' intent to carry out such
construction, maintenance or repair work including the date, time and location
in which such work will take place. Tenant shall have the right to monitor and
inspect such work will take place. Tenant shall have the right to monitor and
inspect such work at Tenant's own risk, and at Tenant's sole cost and expense.
Landlord and Landlord's Parties shall exercise all due care in carrying out such
work. Landlord shall use reasonable efforts to immediately notify the Tenant's
designated contact person by telephone or facsimile in the event of Landlord's
actual knowledge of fire, power failure, bomb threats, or other unplanned events
which could adversely impact Tenant's operations.

                                      41
<PAGE>

          6.2  Remedies.  Upon written notice from Tenant, stating with
               --------
specificity that Landlord or one or more of the Landlord Parties is creating an
Interference in violation of Section 6.1 above, Landlord shall take immediately
all necessary measures at Landlord's sole cost and expense to eliminate the
Interference, including, hiring agents to work extended hours, until the
Interference is eliminated.

          6.3  Relocation.  In no event shall Landlord relocate Tenant or the
Equipment to other premises, or require Tenant to relocate its Equipment for any
length of time to any other location, either in or on the Building or Land or
elsewhere.

          7.   Co-Location.  Landlord acknowledges that Tenant's business to
               -----------
be conducted on the Premises requires the installation on the Premises of
certain communications equipment by certain licenses and customers of Tenant
(collectively, "Customers") in order for such Customers to interconnect with
Tenant's terminal facilities or to permit Tenant to manage or operate such
Customer's equipment, or otherwise as may be required pursuant to applicable
statutes and regulations. Notwithstanding anything to the contrary contained in
the Lease, Landlord hereby consents in advance to any sublease, license
agreements, "co-location agreement" or similar agreement (collectively,
"Customer License") between Tenant and such a Customer of the limited purpose of
permitting such arrangements as described above. The effectiveness of such
advance consent to a particular Customer License is conditioned upon such
Customer License being in writing and consistent with the provisions of this
Lease (although Tenant will only be required to provide Landlord a copy of the
executed Customer License if the Landlord requests it in writing).

          8.   Sound Control.  Tenant is responsible for taking the necessary
               -------------
measures to reduce the sound transmissions caused by the Equipment. In addition,
Tenant's Generator shall be installed in a weatherproof, walk-around type, sound
attenuating enclosure which shall limit the sound to no more that 85 dBA as
measured at three (3) feet from any side, top or bottom, under all operating
conditions.

          9.   Confidentiality.  Landlord shall keep all Confidential
               ---------------
Information of Tenant confidential. For the purposes of this Lease,
"Confidential Information" includes any data or information pertaining to Tenant
or Tenant's business, regardless of medium, that is provided by Tenant to
Landlord, including Tenant's plans and specifications or electrical power
requirements, site plans, or copies of any such information, but excludes any
information (a) approved in writing by Tenant for releases to third parties, (b)
that Landlord possesses independently of Tenant, or (o) that Tenant places in
the public domain.

          10.  Indemnity.  Tenant agrees that Paragraph 10 (c) of the Lease
               ---------
pertains to this Exhibit.

                                      42
<PAGE>

                                     LANDLORD:


WITNESS:                             Laing Beaumeade, Inc.
                                     a Georgia corporation


______________________________       By:  [signature illegible]   (SEAL)
                                          -------------------------

                                     Its: ______________________________

                                     TENANT:


WITNESS                              Equinix, Inc.
                                     a Delaware corporation


______________________________       By:  /s/ Jay S. Adelson   (SEAL)
                                          ----------------------

                                     Its:         CTO
                                           -----------------------------

WITNESS:


______________________________       By:  /s/ Albert M. Avery  (SEAL)
                                          ----------------------

                                     Its:        CEO
                                           -----------------------------

                                      43