<PAGE>   1
                                                                   EXHIBIT 10.71

                                 LEASE AGREEMENT
                                (PHASE IV - LAND)





                                     BETWEEN








                             BNP LEASING CORPORATION


                                    ("BNPLC")





                                       AND





                             NETWORK APPLIANCE, INC.


                                     ("NAI")





                                 OCTOBER 2, 2000


                             (SUNNYVALE, CALIFORNIA)




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<TABLE>
<CAPTION>

                                TABLE OF CONTENTS

                                                                                          Page
<S>     <C>                                                                               <C>
1.      Term.................................................................................2
        (a)    Scheduled Term................................................................2
        (b)    Intentionally Deleted.........................................................2
        (c)    Intentionally Deleted.........................................................2
        (d)    Election by NAI to Terminate After Accelerating the Designated Sale Date......2
        (e)    Extension of the Term.........................................................3

2.      Use and Condition of the Property....................................................3
        (a)    Use...........................................................................3
        (b)    Condition of the Property.....................................................4
        (c)    Consideration for and Scope of Waiver.........................................4

3.      Rent.................................................................................4
        (a)    Base Rent Generally...........................................................4
        (b)    Impact of Collateral Upon Formulas............................................5
        (c)    Calculation of Base Rent......................................................5
               (i)    Amount Payable for Base Rent Periods BEFORE the Base Rent
                      Commencement Date (For All Buildings)..................................5

               (ii)   Base Rent Formula for Periods AFTER the Base Rent Commencement
                      Date (All Buildings)...................................................7

               (iii)  Payment Required Upon Sale under the Purchase Agreement................7

        (d)    Additional Rent...............................................................7
        (e)    No Demand or Setoff...........................................................7
        (f)    Default Interest and Order of Application.....................................7

4.      Nature of this Agreement.............................................................7
        (a)    "Net" Lease Generally.........................................................7
        (b)    No Termination................................................................8
        (c)    Tax Reporting.................................................................8
        (d)    Characterization of this Land Lease...........................................9

5.      Payment of Executory Costs and Losses Related to the Property.......................10
        (a)    Impositions..................................................................10
        (b)    Increased Costs; Capital Adequacy Charges....................................10
        (c)    NAI's Payment of Other Losses; General Indemnification.......................11
        (d)    Exceptions and Qualifications to Indemnities.................................13

6.      Intentionally Deleted...............................................................14

7.      Intentionally Deleted...............................................................14
</TABLE>

                                       i
<PAGE>   3

<TABLE>
<CAPTION>

                                                                                          Page
<S>     <C>                                                                               <C>
8.      Environmental.......................................................................14
        (a)    Environmental Covenants by NAI...............................................14
        (b)    Right of BNPLC to do Remedial Work Not Performed by NAI......................14
        (c)    Environmental Inspections and Reviews........................................15
        (d)    Communications Regarding Environmental Matters...............................15

9.      Insurance Required and Condemnation.................................................16
        (a)    Liability Insurance..........................................................16
        (b)    Intentionally Deleted........................................................16
        (c)    Failure to Obtain Insurance..................................................17
        (d)    Condemnation.................................................................17
        (e)    Waiver of Subrogation........................................................17

10.     Application of Insurance and Condemnation Proceeds..................................17
        (a)    Collection and Application of Insurance and Condemnation Proceeds
               Generally....................................................................17
        (b)    Advances of Escrowed Proceeds to NAI.........................................18
        (c)    Application of Escrowed Proceeds as a Qualified Prepayment...................18
        (d)    Special Provisions Applicable After an Event of Default......................19
        (e)    NAI's Obligation to Restore..................................................19
        (f)    Takings of All or Substantially All of the Property on or after the
               Base Rent Commencement Date (All Buildings)..................................19

11.     Additional Representations, Warranties and Covenants of NAI Concerning the
        Property............................................................................19
        (a)    Compliance with Covenants and Laws...........................................19
        (b)    Operation of the Property....................................................20
        (c)    Debts for Construction, Maintenance, Operation or Development................21
        (d)    Repair, Maintenance, Alterations and Additions...............................21
        (e)    Permitted Encumbrances and Development Documents.............................22
        (f)    Books and Records Concerning the Property....................................22

12.     Financial Covenants and Other Covenants Incorporated by Reference to Schedule 1.....22

13.     Financial Statements and Other Reports..............................................22
        (a)    Financial Statements; Required Notices; Certificates.........................22

14.     Assignment and Subletting by NAI....................................................24
        (a)    BNPLC's Consent Required.....................................................24
        (b)    Standard for BNPLC's Consent to Assignments and Certain Other Matters........24
        (c)    Consent Not a Waiver.........................................................24

15.     Assignment by BNPLC.................................................................25
        (a)    Restrictions on Transfers....................................................25
        (b)    Effect of Permitted Transfer or other Assignment by BNPLC....................25

16.     BNPLC's Right of Access.............................................................25
</TABLE>

                                       ii
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<TABLE>
<CAPTION>

<S>     <C>                                                                                <C>
17.     Events of Default...................................................................26

18.     Remedies............................................................................28
        (a)    Basic Remedies...............................................................28
        (b)    Notice Required So Long As the Purchase Option and NAI's Initial
               Remarketing Rights and Obligations Continue Under the Purchase Agreement.....29
        (c)    Enforceability...............................................................30
        (d)    Remedies Cumulative..........................................................30

19.     Default by BNPLC....................................................................30

20.     Quiet Enjoyment.....................................................................31

21.     Surrender Upon Termination..........................................................31

22.     Holding Over by NAI.................................................................31

23.     Independent Obligations Evidenced by the Other Operative Documents..................32

24.     Amendment and Restatement...........................................................32
</TABLE>


                             EXHIBITS AND SCHEDULES

Exhibit A.     Legal Description

Exhibit B.     Insurance Requirements

Schedule 1.    Financial Covenants and Other Requirements


                                       iii

<PAGE>   5




                                 LEASE AGREEMENT
                                (PHASE IV - LAND)

        This LEASE AGREEMENT (PHASE IV - LAND) (this "LAND LEASE"), by and
between BNP LEASING CORPORATION, a Delaware corporation ("BNPLC"), and NETWORK
APPLIANCE, INC., a California corporation ("NAI"), is made and dated as of
October 2, 2000, the Effective Date. ("EFFECTIVE DATE" and other capitalized
terms used and not otherwise defined in this Land Lease are intended to have the
meanings assigned to them in the Common Definitions and Provisions Agreement
(Phase IV - Land) executed by BNPLC and NAI contemporaneously with this Land
Lease. By this reference, the Common Definitions and Provisions Agreement (Phase
IV - Land) is incorporated into and made a part of this Land Lease for all
purposes.)

                                    RECITALS

        Pursuant to the Existing Contract, which covered the Land described in
Exhibit A, BNPLC has acquired the Land and any appurtenances thereto from
Seller.

        NAI and BNPLC have previously executed that Lease Agreement (Phase IV -
Land) dated as of December 20, 1999 (the "Prior Lease Agreement"). NAI and BNPLC
have agreed to amend, restate and replace the Prior Lease Agreement with this
Land Lease as provided in Paragraph 24 below.

        BNPLC and NAI have reached agreement as to the terms and conditions upon
which BNPLC is willing to lease the Land to NAI, and by this Land Lease BNPLC
and NAI desire to evidence such agreement.

                                GRANTING CLAUSES

        BNPLC does hereby LEASE, DEMISE and LET unto NAI for the term
hereinafter set forth all right, title and interest of BNPLC, now owned or
hereafter acquired, in and to:

                (1) the Land;

                (2) all easements and other rights appurtenant to the Land,
        whether now owned or hereafter acquired by BNPLC; and

                (3) (A) any land lying within the right-of-way of any street,
        open or proposed, adjoining the Land, (B) any sidewalks and alleys
        adjacent to the Land and (C) any strips and gores between the Land and
        any abutting land not owned or leased by BNPLC.

BNPLC's interest in all property described in clauses (1) through (3) above are
hereinafter referred to collectively as the "Real Property". The Real Property
does not include any Improvements (now existing or those to be constructed as
provided in the Other Lease Agreement and the Construction Management Agreement)
or BNPLC's rights appurtenant to the Improvements, it being understood that the
Other Lease Agreement constitutes a separate lease

<PAGE>   6
                                       2




of the Improvements and the appurtenances thereto, and only the Improvements and
the appurtenances thereto, from BNPLC to NAI.

        To the extent, but only to the extent, that assignable rights or
interests in, to or under the following have been acquired by BNPLC under the
Existing Contract or acquired by BNPLC pursuant to Paragraph 7 below, BNPLC also
hereby grants and assigns to NAI for the term of this Land Lease the right to
use and enjoy (and, in the case of contract rights, to enforce) such rights or
interests of BNPLC:

               (a) the benefits, if any, conferred upon the owner of the Real
        Property by the Permitted Encumbrances (including the right to receive
        rents under and to otherwise enforce the Premises Lease) and Development
        Documents; and

               (b) any permits, licenses, franchises, certificates, and other
        rights and privileges against third parties related to the Real
        Property.

Such rights and interests of BNPLC, whether now existing or hereafter arising,
are hereinafter collectively called the "PERSONAL PROPERTY". The Real Property
and the Personal Property are hereinafter sometimes collectively called the
"PROPERTY."

        However, the leasehold estate conveyed hereby and NAI's rights hereunder
are expressly made subject and subordinate to the terms and conditions of this
Land Lease, to the Premises Lease and all other Permitted Encumbrances, and to
any other claims or encumbrances not constituting Liens Removable by BNPLC.

                          GENERAL TERMS AND CONDITIONS

        The Property is leased by BNPLC to NAI and is accepted and is to be used
and possessed by NAI upon and subject to the following terms and conditions:

        1.      TERM.

               (a) Scheduled Term. The term of this Land Lease (the "Term")
shall commence on and include the Effective Date, and end on the first Business
Day of November, 2007, unless sooner terminated as expressly herein provided.

               (b) Intentionally Deleted.

               (c) Intentionally Deleted.

               (d) Election by NAI to Terminate After Accelerating the
Designated Sale Date. NAI shall be entitled to accelerate the Designated Sale
Date (and thus accelerate the purchase of BNPLC's interest in the Property by
NAI or by an Applicable Purchaser pursuant to the Purchase Agreement) by sending
a notice to BNPLC as provided in clause (2) of the definition of "Designated
Sale Date" in the Common Definitions and Provisions Agreement (Phase IV - Land).
In the event, because of NAI's election to so accelerate the Designated Sale
Date or for any other reason, the Designated Sale Date occurs before the end of
the scheduled Term, NAI may terminate this Land Lease on or after the Designated
Sale Date; provided,


                                       2
<PAGE>   7

however, as a condition to any such termination by NAI, NAI must have done the
following prior to the termination:

                (i) purchased or caused an Applicable Purchaser to purchase the
        Property pursuant to the Purchase Agreement and satisfied all of NAI's
        other obligations under the Purchase Agreement;

                (ii) paid to BNPLC all Base Rent and all other Rent due on or
        before or accrued through the Designated Sale Date; and

                (iii) paid any Breakage Costs caused by BNPLC's sale of the
        Property pursuant to the Purchase Agreement.

               (e) Extension of the Term. The Term may be extended at the option
of NAI for two successive periods of five years each; provided, however, that
prior to any such extension the following conditions must have been satisfied:
(A) at least 180 days prior to the commencement of any such extension, BNPLC and
NAI must have agreed in writing upon, and received the consent and approval of
BNPLC's Parent and all other Participants to (1) a corresponding extension not
only to the date for the expiration of the Term specified above in this Section,
but also to the date specified in clause (1) of the definition of Designated
Sale Date in the Common Definitions and Provisions Agreement (Phase IV - Land),
and (2) an adjustment to the Rent that NAI will be required to pay for the
extension, it being expected that the Rent for the extension may be different
than the Rent required for the original Term, and it being understood that the
Rent for any extension must in all events be satisfactory to both BNPLC and NAI,
each in its sole and absolute discretion; (B) no Event of Default shall have
occurred and be continuing at the time of NAI's exercise of its option to
extend; and (C) immediately prior to any such extension, this Land Lease must
remain in effect. With respect to the condition that BNPLC and NAI must have
agreed upon the Rent required for any extension of the Term, neither NAI nor
BNPLC is willing to submit itself to a risk of liability or loss of rights
hereunder for being judged unreasonable. Accordingly, both NAI and BNPLC hereby
disclaim any obligation express or implied to be reasonable in negotiating the
Rent for any such extension. Subject to the changes to the Rent payable during
any extension of the Term as provided in this Paragraph, if NAI exercises its
option to extend the Term as provided in this Paragraph, this Land Lease shall
continue in full force and effect, and the leasehold estate hereby granted to
NAI shall continue without interruption and without any loss of priority over
other interests in or claims against the Property that may be created or arise
after the Effective Date and before the extension.

        2.      USE AND CONDITION OF THE PROPERTY.

                (a) Use. Subject to the Permitted Encumbrances, the Development
Documents and the terms hereof, NAI may use and occupy the Property during the
Term, but only for the following purposes.

                (i) constructing, maintaining and using Improvements on the Land
        for purposes expressly permitted by and described in Paragraph 2(a) of
        the Other Lease Agreement; and


                                       3
<PAGE>   8

                (ii) other lawful purposes approved in advance and in writing by
        BNPLC, which approval will not be unreasonably withheld after completion
        of the Construction Project (but NAI acknowledges that BNPLC's
        withholding of such approval shall be reasonable if BNPLC determines in
        good faith that (1) giving the approval may materially increase BNPLC's
        risk of liability for any existing or future environmental problem, or
        (2) giving the approval is likely to substantially increase BNPLC's
        administrative burden of complying with or monitoring NAI's compliance
        with the requirements of this Land Lease or other Operative Documents).

               Nothing in this subparagraph will prevent a tenant under a
        Premises Lease executed by NAI, as Landlord, prior to or concurrently
        with the Effective Date, from using the space covered thereby for
        purposes expressly authorized by the terms and conditions of such
        Premises Lease.

               (b) Condition of the Property. NAI ACKNOWLEDGES THAT IT HAS
CAREFULLY AND FULLY INSPECTED THE PROPERTY AND ACCEPTS THE PROPERTY IN ITS
PRESENT STATE, AS IS, AND WITHOUT ANY REPRESENTATION OR WARRANTY, EXPRESS OR
IMPLIED, AS TO THE CONDITION OF SUCH PROPERTY OR AS TO THE USE WHICH MAY BE MADE
THEREOF. NAI ALSO ACCEPTS THE PROPERTY WITHOUT ANY COVENANT, REPRESENTATION OR
WARRANTY, EXPRESS OR IMPLIED, BY BNPLC OR ITS AFFILIATES REGARDING THE TITLE
THERETO OR THE RIGHTS OF ANY PARTIES IN POSSESSION OF ANY PART THEREOF, EXCEPT
AS EXPRESSLY SET FORTH IN PARAGRAPH 20. BNPLC SHALL NOT BE RESPONSIBLE FOR ANY
LATENT OR OTHER DEFECT OR CHANGE OF CONDITION IN THE PROPERTY OR FOR ANY
VIOLATIONS WITH RESPECT THERETO OF APPLICABLE LAWS. FURTHER, THOUGH NAI MAY
OBTAIN FROM THIRD PARTIES ANY FACILITIES OR SERVICES TO WHICH NAI IS ENTITLED BY
REASON OF THE ASSIGNMENT AND LEASE OF PERSONAL PROPERTY SET FORTH ON PAGE ERROR!
BOOKMARK NOT DEFINED. OF THIS LAND LEASE, BNPLC SHALL NOT BE REQUIRED TO FURNISH
TO NAI ANY FACILITIES OR SERVICES OF ANY KIND, INCLUDING WATER, STEAM, HEAT,
GAS, AIR CONDITIONING, ELECTRICITY, LIGHT OR POWER.

               (c) Consideration for and Scope of Waiver. The provisions of
subparagraph 2.(b) above have been negotiated by BNPLC and NAI after due
consideration for the Rent payable hereunder and are intended to be a complete
exclusion and negation of any representations or warranties of BNPLC or its
Affiliates, express or implied, with respect to the Property that may arise
pursuant to any law now or hereafter in effect or otherwise, except as expressly
set forth herein.

        However, such exclusion of representations and warranties by BNPLC is
not intended to impair any representations or warranties made by other parties,
the benefit of which may pass to NAI during the Term because of the definition
of Personal Property and Property above.

        3.     RENT.

               (a) Base Rent Generally. On each Base Rent Date through the end
of the Term, NAI shall pay BNPLC rent ("BASE RENT") for the Base Rent Period
ending on that date. Each payment of Base Rent must be received by BNPLC no
later than 10:00 a.m. (Pacific time) on the date it becomes due; if received
after 10:00 a.m. (Pacific time) it will be considered for purposes of this Land
Lease as received on the next following Business Day. At least five days prior
to any Base Rent Date upon which an installment of Base Rent shall become due,
BNPLC

                                       4
<PAGE>   9

shall notify NAI in writing of the amount of each installment, calculated as
provided below. Any failure by BNPLC to so notify NAI, however, shall not
constitute a waiver of BNPLC's right to payment, but absent such notice NAI
shall not be in default hereunder for any underpayment resulting therefrom if
NAI, in good faith, reasonably estimates the payment required, makes a timely
payment of the amount so estimated and corrects any underpayment within three
Business Days after being notified by BNPLC of the underpayment.

               (b) Impact of Collateral Upon Formulas. To ease the
administrative burden of this Land Lease and the Pledge Agreement, the formulas
for calculating Base Rent accruing during Base Rent Periods after the Base Rent
Commencement Date (For All Buildings), as set out below in subparagraph 3.(c),
reflect a reduction in the Base Rent equal to the interest that would accrue
during such periods on Collateral if the Accounts (as defined in the Pledge
Agreement) bore interest during such periods at the Effective Rate. BNPLC has
agreed to such reduction to provide NAI with the economic equivalent of interest
on Collateral after the Base Rent Commencement Date (For All Buildings), and in
return NAI has agreed to the provisions of the Pledge Agreement that excuse the
actual payment of interest on the Accounts for periods after the Base Rent
Commencement Date (For All Buildings). By incorporating such reduction of Base
Rent into the formulas below, and by providing in the Pledge Agreement for
noninterest bearing Accounts after the Base Rent Commencement Date (For All
Buildings), the parties will avoid an unnecessary and cumbersome periodic
exchange of equal payments. It is not, however, the intent of BNPLC or NAI to
understate Base Rent or interest for financial reporting purposes. Accordingly,
for purposes of any financial reports that this Land Lease requires of NAI from
time to time, NAI may report Base Rent as if there had been no such reduction
and as if the Collateral provided in accordance with the Pledge Agreement had
been maintained, after the Base Rent Commencement Date (For All Buildings), in
Accounts that bore interest at the Effective Rate.

               (c) Calculation of Base Rent. Payments of Base Rent shall be
calculated as follows:

               (i) Amount Payable for Base Rent Periods BEFORE the Base Rent
Commencement Date (For All Buildings). The Base Rent for any Base Rent Period
that ends on or prior to the Base Rent Commencement Date (For All Buildings)
shall equal the sum of (1) the Base Rent (Existing Buildings Land) accruing for
such period, (2) any Base Rent (Building 6 Land) accruing for such period, (3)
any Base Rent (Building 7 Land) accruing for such period and (4) any Base Rent
(Building 8 Land) accruing for such period.

               For any Base Rent Period ending on or before the Base Rent
        Commencement Date (For All Buildings) the Base Rent (Existing Buildings
        Land) shall equal:

                -       the Stipulated Loss Value on the first day of such Base
                        Rent Period, times

                -       the Existing Buildings Land Percentage, times

                -       a rate equal to the Secured Spread, plus the Effective
                        Rate for such Base Rent Period, times


                                       5
<PAGE>   10

                -       a fraction, the numerator of which is the number of days
                        in such Base Rent Period and the denominator of which is
                        three hundred sixty.

                No Base Rent (Building 6 Land) will accrue for any Base Rent
        Period that ends on or prior to the Base Rent Commencement Date
        (Building 6), but thereafter for any Base Rent Period ending on or
        before the Base Rent Commencement Date (For All Buildings) the Base Rent
        (Building 6 Land) shall equal:

                -       the Stipulated Loss Value on the first day of such Base
                        Rent Period, times

                -       the Building 6 Land Percentage, times

                -       a rate equal to the Secured Spread, plus the Effective
                        Rate for such Base Rent Period, times

                -       a fraction, the numerator of which is the number of days
                        in such Base Rent Period and the denominator of which is
                        three hundred sixty.

                No Base Rent (Building 7 Land) will accrue for any Base Rent
        Period that ends on or prior to the Base Rent Commencement Date
        (Building 7), but thereafter for any Base Rent Period ending on or
        before the Base Rent Commencement Date (All Buildings) the Base Rent
        (Building 7 Land) shall equal:

                -       the Stipulated Loss Value on the first day of such Base
                        Rent Period, times

                -       the Building 7 Land Percentage, times

                -       a rate equal to the Secured Spread, plus the Effective
                        Rate for such Base Rent Period, times

                -       a fraction, the numerator of which is the number of days
                        in such Base Rent Period and the denominator of which is
                        three hundred sixty.

                No Base Rent (Building 8 Land) will accrue for any Base Rent
        Period that ends on or prior to the Base Rent Commencement Date
        (Building 8), but thereafter for any Base Rent Period ending on or
        before the Base Rent Commencement Date (All Buildings) the Base Rent
        (Building 8 Land) shall equal:

                -       the Stipulated Loss Value on the first day of such Base
                        Rent Period, times

                -       the Building 8 Land Percentage, times

                -       a rate equal to the Secured Spread, plus the Effective
                        Rate for such Base Rent Period, times

                -       a fraction, the numerator of which is the number of days
                        in such Base Rent Period and the denominator of which is
                        three hundred sixty.

                                       6
<PAGE>   11

               (ii) Base Rent Formula for Periods After the Base Rent
Commencement Date (All Buildings). Each payment of Base Rent for any Base Rent
Period that commences on or after the Base Rent Commencement Date (All
Buildings) shall equal:

                -       Stipulated Loss Value on the first day of such Base Rent
                        Period, times

                -       the Secured Spread, times

                -       a fraction, the numerator of which is the number of days
                        in such Base Rent Period and the denominator of which is
                        three hundred sixty.

               (iii) Payment Required Upon Sale under the Purchase Agreement.
Notwithstanding the foregoing, if NAI or any Applicable Purchaser purchases
BNPLC's interest in the Property pursuant to the Purchase Agreement, any accrued
unpaid Base Rent (or component thereof) and all outstanding Additional Rent
shall be due on the date of purchase in addition to the purchase price and other
sums due BNPLC under the Purchase Agreement.

               (d) Additional Rent. All amounts which NAI is required to pay to
or on behalf of BNPLC pursuant to this Land Lease, together with every charge,
premium, interest and cost set forth herein which may be added for nonpayment or
late payment thereof, shall constitute rent (all such amounts, other than Base
Rent, are herein called "Additional Rent", and together Base Rent and Additional
Rent are herein sometimes called "Rent").

               (e) No Demand or Setoff. Except as expressly provided herein, NAI
shall pay all Rent without notice or demand and without counterclaim, deduction,
setoff or defense.

               (f) Default Interest and Order of Application. All Rent shall
bear interest, if not paid when first due, at the Default Rate in effect from
time to time from the date due until paid; provided, that nothing herein
contained will be construed as permitting the charging or collection of interest
at a rate exceeding the maximum rate permitted under Applicable Laws. BNPLC
shall be entitled to apply any amounts paid by or on behalf of NAI against any
Rent then past due in the order the same became due or in such other order as
BNPLC may elect.

        4.     NATURE OF THIS AGREEMENT.

               (a) "Net" Lease Generally. Subject only to the exceptions listed
in subparagraph 5.(d) below, it is the intention of BNPLC and NAI that Base Rent
and other payments herein specified shall be absolutely net to BNPLC and that
NAI shall pay all costs, expenses and obligations of every kind relating to the
Property or this Land Lease which may arise or become due, including: (i) any
taxes payable by virtue of BNPLC's receipt of amounts paid to or on behalf of
BNPLC in accordance with Paragraph 5; (ii) any amount for which BNPLC is or
becomes liable with respect to the Permitted Encumbrances or the Development
Documents; and (iii) any costs incurred by BNPLC (including Attorneys' Fees)
because of BNPLC's acquisition or ownership of any interest in the Property or
because of this Land Lease or the transactions contemplated herein.

        However, neither this subparagraph 4.(a) nor the indemnity in this
subparagraph 5.(c)(i) shall be construed to make NAI liable for (I) an
allocation of general overhead or internal


                                       7
<PAGE>   12

administrative expenses of BNPLC or any other Interested Party or (II) any
duplicate payment of the same Loss to both BNPLC and another Interested Party.
(If, for example, BNPLC were required to make a $10 fine because of a failure of
the Property to comply with Applicable Laws, and a Participant were required by
the Participation Agreement to reimburse BNPLC for 20% of the $10, NAI would not
be required by this subparagraph 4.(a) or by subparagraph 5.(c)(i) to pay both
$10 to BNPLC and $2 to the Participant on account of the fine.)

               (b) No Termination. Except as expressly provided in this Land
Lease itself, this Land Lease shall not terminate, nor shall NAI have any right
to terminate this Land Lease, nor shall NAI be entitled to any abatement of the
Rent, nor shall the obligations of NAI under this Land Lease be excused, for any
reason whatsoever, including any of the following: (i) any damage to or the
destruction of all or any part of the Property from whatever cause, (ii) the
taking of the Property or any portion thereof by eminent domain or otherwise for
any reason, (iii) the prohibition, limitation or restriction of NAI's use or
development of all or any portion of the Property or any interference with such
use by governmental action or otherwise, (iv) any eviction of NAI or of anyone
claiming through or under NAI, (v) any default on the part of BNPLC under this
Land Lease or under any other agreement to which BNPLC and NAI are parties, (vi)
the inadequacy in any way whatsoever of the Property (it being understood that
BNPLC has not made, does not make and will not make any representation express
or implied as to the adequacy thereof), (vii) any latent or other defect in the
Property or any change in the condition thereof or the existence with respect to
the Property of any violations of Applicable Laws, or (viii) any other cause
whether similar or dissimilar to the foregoing. It is the intention of the
parties hereto that the obligations of NAI hereunder shall be separate and
independent of the covenants and agreements of BNPLC, that Base Rent and all
other sums payable by NAI hereunder shall continue to be payable in all events
and that the obligations of NAI hereunder shall continue unaffected, unless the
requirement to pay or perform the same shall have been terminated or limited
pursuant to an express provision of this Land Lease. Without limiting the
foregoing, NAI waives to the extent permitted by Applicable Laws, except as
otherwise expressly provided herein, all rights to which NAI may now or
hereafter be entitled by law (including any such rights arising because of any
implied "warranty of suitability" or other warranty under Applicable Laws) (i)
to quit, terminate or surrender this Land Lease or the Property or any part
thereof or (ii) to any abatement, suspension, deferment or reduction of the
Rent.

        However, nothing in this subparagraph 4.(b) shall be construed as a
waiver by NAI of any right NAI may have at law or in equity to the following
remedies, whether because of BNPLC's failure to remove a Lien Removable by BNPLC
or because of any other default by BNPLC under this Land Lease that continues
beyond the period for cure provided in Paragraph 19: (i) the recovery of
monetary damages, (ii) injunctive relief in case of the violation, or attempted
or threatened violation, by BNPLC of any of the express covenants, agreements,
conditions or provisions of this Land Lease which are binding upon BNPLC
(including the confidentiality provisions set forth in subparagraph 16.(c)
below), or (iii) a decree compelling performance by BNPLC of any of the express
covenants, agreements, conditions or provisions of this Land Lease which are
binding upon BNPLC.

               (c) Tax Reporting. BNPLC and NAI shall report this Land Lease and
the Purchase Agreement for federal income tax purposes as a conditional sale
unless prohibited from doing so by the Internal Revenue Service. If the Internal
Revenue Service shall challenge

                                       8
<PAGE>   13

BNPLC's characterization of this Land Lease and the Purchase Agreement as a
conditional sale for federal income tax reporting purposes, BNPLC shall notify
NAI in writing of such challenge and consider in good faith any reasonable
suggestions by NAI about an appropriate response. In any event, NAI shall
(subject only to the limitations set forth in this subparagraph) indemnify and
hold harmless BNPLC from and against all liabilities, costs, additional taxes
(other than Excluded Taxes) and other expenses that may arise or become due
because of such challenge or because of any resulting recharacterization
required by the Internal Revenue Service, including any additional taxes that
may become due upon any sale under the Purchase Agreement to the extent (if any)
that such additional taxes are not offset by tax savings resulting from
additional depreciation deductions or other tax benefits to BNPLC of the
recharacterization. If BNPLC receives a written notice of any challenge by the
Internal Revenue Service that BNPLC believes will be covered by this Paragraph,
then BNPLC shall promptly furnish a copy of such notice to NAI. The failure to
so provide a copy of the notice to NAI shall not excuse NAI from its obligations
under this Paragraph; provided, that if none of the officers of NAI and none of
the employees of NAI responsible for tax matters are aware of the challenge
described in the notice and such failure by BNPLC renders unavailable defenses
that NAI might otherwise assert, or precludes actions that NAI might otherwise
take, to minimize its obligations hereunder, then NAI shall be excused from its
obligation to indemnify BNPLC against liabilities, costs, additional taxes and
other expenses, if any, which would not have been incurred but for such failure.
For example, if BNPLC fails to provide NAI with a copy of a notice of a
challenge by the Internal Revenue Service covered by the indemnities set out in
this Land Lease and NAI is not otherwise already aware of such challenge, and if
as a result of such failure BNPLC becomes liable for penalties and interest
covered by the indemnities in excess of the penalties and interest that would
have accrued if NAI had been promptly provided with a copy of the notice, then
NAI will be excused from any obligation to BNPLC to pay the excess.

               (d) Characterization of this Land Lease. For purposes of
determining the appropriate financial accounting for this Land Lease and for
purposes of determining their respective rights and remedies under state law,
BNPLC and NAI believe and intend that (i) this Land Lease constitutes a true
lease, not a mere financing arrangement, enforceable in accordance with its
express terms, and the preceding subparagraph is not intended to affect the
enforcement of any other provisions of this Land Lease or the Purchase
Agreement, and (ii) the Purchase Agreement shall constitute a separate and
independent contract, enforceable in accordance with the express terms and
conditions set forth therein. In this regard, NAI acknowledges that NAI asked
BNPLC to participate in the transactions evidenced by this Land Lease and the
Purchase Agreement as a landlord and owner of the Property, not as a lender.
Although other transactions might have been used to accomplish similar results,
NAI expects to receive certain material accounting and other advantages through
the use of a lease transaction. Accordingly, and notwithstanding the reporting
for income tax purposes described in the preceding subparagraph, NAI cannot
equitably deny that this Land Lease and the Purchase Agreement should be
construed and enforced in accordance with their respective terms, rather than as
a mortgage or other security device, in any action brought by BNPLC to enforce
this Land Lease or the Purchase Agreement.

                                       9
<PAGE>   14

        5.     PAYMENT OF EXECUTORY COSTS AND LOSSES RELATED TO THE PROPERTY.

               (a) Impositions. Subject only to the exceptions listed in
subparagraph 5.(d) below, NAI shall pay or cause to be paid prior to delinquency
all ad valorem taxes assessed against the Property and other Impositions. If
requested by BNPLC from time to time, NAI shall furnish BNPLC with receipts
showing payment of all Impositions prior to the applicable delinquency date
therefor.

        Notwithstanding the foregoing, NAI may in good faith, by appropriate
proceedings, contest the validity, applicability or amount of any asserted
Imposition, and pending such contest NAI shall not be deemed in default under
any of the provisions of this Land Lease because of the Imposition if (1) NAI
diligently prosecutes such contest to completion in a manner reasonably
satisfactory to BNPLC, and (2) NAI promptly causes to be paid any amount
adjudged by a court of competent jurisdiction to be due, with all costs,
penalties and interest thereon, promptly after such judgment becomes final;
provided, however, in any event each such contest shall be concluded and the
contested Impositions must be paid by NAI prior to the earlier of (i) the date
that any criminal prosecution is instituted or overtly threatened against BNPLC
or its directors, officers or employees because of the nonpayment thereof or
(ii) the date any writ or order is issued under which any property owned or
leased by BNPLC (including the Property) may be seized or sold or any other
action is taken against BNPLC or against any property owned or leased by BNPLC
because of the nonpayment thereof, or (iii) any Designated Sale Date upon which,
for any reason, NAI or an Affiliate of NAI or any Applicable Purchaser shall not
purchase BNPLC's interest in the Property pursuant to the Purchase Agreement for
a price to BNPLC (when taken together with any additional payments made by NAI
pursuant to Paragraph 1(A)(2) of the Purchase Agreement, in the case of a
purchase by an Applicable Purchaser) equal to the Break Even Price.

               (b) Increased Costs; Capital Adequacy Charges. Subject only to
the exceptions listed in subparagraph 5.(d) below:

               (i) If after the Effective Date there shall be any increase in
        the cost to BNPLC's Parent or any other Participant agreeing to make or
        making, funding or maintaining advances to BNPLC in connection with the
        Property because of any Banking Rules Change, then NAI shall from time
        to time, pay to BNPLC for the account of BNPLC's Parent or such other
        Participant, as the case may be, additional amounts sufficient to
        compensate BNPLC's Parent or the Participant for such increased cost. An
        increase in costs resulting from any imposition or increase of reserve
        requirements applicable to Collateral held from time to time by BNPLC's
        Parent or other Participants pursuant to the Pledge Agreement would be
        an increase covered by the preceding sentence. A certificate as to the
        amount of such increased cost, submitted to BNPLC and NAI by BNPLC's
        Parent or the other Participant, shall be conclusive and binding upon
        NAI, absent clear and demonstrable error.

               (ii) BNPLC's Parent or any other Participant may demand
        additional payments ("CAPITAL ADEQUACY CHARGES") if BNPLC's Parent or
        the other Participant determines that any Banking Rules Change affects
        the amount of capital to be maintained


                                       10
<PAGE>   15

        by it and that the amount of such capital is increased by or based upon
        the existence of advances made or to be made to BNPLC to permit BNPLC to
        maintain BNPLC's investment in the Property. To the extent that BNPLC's
        Parent or another Participant demands Capital Adequacy Charges as
        compensation for the additional capital requirements reasonably
        allocable to such investment or advances, NAI shall pay to BNPLC for the
        account of BNPLC's Parent or the other Participant, as the case may be,
        the amount so demanded. Without limiting the foregoing, BNPLC and NAI
        hereby acknowledge and agree that the provisions for calculating Base
        Rent set forth herein reflect the assumption that the Pledge Agreement
        will cause a zero percent (0%) risk weight to be assigned to a
        percentage (equal to the Collateral Percentage) of the collective
        investment of BNPLC and the Participants in the Property pursuant to 12
        Code of Federal Regulations, part 225, as from time to time supplemented
        or amended, or pursuant to any other similar or successor statute or
        regulation applicable to BNPLC and the Participants. If and so long as
        such risk weight is increased the assumed amount of zero percent (0%)
        because of a Banking Rules Change, Capital Adequacy Charges may be
        collected to yield the same rate of return to BNPLC, BNPLC's Parent and
        any other Participants (net of their costs of maintaining required
        capital) that they would have enjoyed from this Land Lease absent such
        increase.

               (iii) Any amount required to be paid by NAI under this
        subparagraph 5.(b) shall be due ten days after a demand for such payment
        is received by NAI.

               (c) NAI's Payment of Other Losses; General Indemnification.
Subject only to the exceptions listed in subparagraph 5.(d) below:

               (i) All Losses (including Environmental Losses) asserted against
        or incurred or suffered by BNPLC or other Interested Parties at any time
        and from time to time by reason of, in connection with or arising out of
        (A) their ownership or alleged ownership of any interest in the Property
        or the Rents, (B) the use and operation of the Property, (C) the
        negotiation, administration or enforcement of the Operative Documents,
        (D) the making of Prior Funding Advances, (E) the Premises Lease, (F)
        the breach by NAI of this Land Lease or any other document executed by
        NAI in connection herewith, (G) any failure of the Property or NAI
        itself to comply with Applicable Laws, (H) Permitted Encumbrances, (I)
        Hazardous Substance Activities, including those occurring prior to
        Effective Date, (J) any obligations under the Existing Contract related
        to the Property that survive the closing thereunder, or (K) any bodily
        or personal injury or death or property damage occurring in or upon or
        in the vicinity of the Property through any cause whatsoever, shall be
        paid by NAI, and NAI shall indemnify and defend BNPLC and other
        Interested Parties from and against all such Losses.

               (ii) THE INDEMNITIES AND RELEASES PROVIDED HEREIN FOR THE
        BENEFIT OF BNPLC AND OTHER INTERESTED PARTIES, INCLUDING THE INDEMNITY
        SET FORTH IN THE PRECEDING SUBPARAGRAPH 5.(c)(i), SHALL APPLY EVEN IF
        AND WHEN THE SUBJECT MATTERS OF THE INDEMNITIES AND RELEASES ARE CAUSED
        BY OR ARISE OUT OF THE NEGLIGENCE OR STRICT LIABILITY OF BNPLC OR
        ANOTHER INTERESTED PARTY. FURTHER, SUCH INDEMNITIES AND RELEASES

                                       11
<PAGE>   16

        WILL APPLY EVEN IF INSURANCE OBTAINED BY NAI OR REQUIRED OF NAI BY THIS
        LAND LEASE OR OTHER OPERATIVE DOCUMENTS IS NOT ADEQUATE TO COVER LOSSES
        AGAINST OR FOR WHICH THE INDEMNITIES AND RELEASES ARE PROVIDED. NAI'S
        LIABILITY, HOWEVER, FOR ANY FAILURE TO OBTAIN INSURANCE REQUIRED BY THIS
        LAND LEASE OR OTHER OPERATIVE DOCUMENTS WILL NOT BE LIMITED TO LOSSES
        AGAINST WHICH INDEMNITIES ARE PROVIDED HEREIN, IT BEING UNDERSTOOD THAT
        SUCH INSURANCE IS INTENDED TO DO MORE THAN PROVIDE A SOURCE OF PAYMENT
        FOR LOSSES AGAINST WHICH BNPLC AND OTHER INTERESTED PARTIES ARE ENTITLED
        TO INDEMNIFICATION BY THIS LAND LEASE.

                (iii) Costs and expenses for which NAI shall be responsible
        pursuant to this subparagraph 5.(c) will include appraisal fees, filing
        and recording fees, inspection fees, survey fees, taxes, brokerage fees
        and commissions, abstract fees, title policy fees, Uniform Commercial
        Code search fees, escrow fees and Attorneys' Fees incurred by BNPLC with
        respect to the Property, whether such costs and expenses are incurred at
        the time of execution of this Land Lease or at any time during the Term.

                (iv) NAI's obligations under this subparagraph 5.(c) shall
        survive the termination or expiration of this Land Lease. Any amount to
        be paid by NAI under this subparagraph 5.(c) shall be due ten days after
        a demand for such payment is received by NAI.

                (v) If an Interested Party notifies NAI of any claim or
        proceeding included in, or any investigation or allegation concerning,
        Losses for which NAI is responsible pursuant to this subparagraph 5.(c),
        NAI shall assume on behalf of the Interested Party and conduct with due
        diligence and in good faith the investigation and defense thereof and
        the response thereto with counsel selected by NAI, but satisfactory to
        the Interested Party; provided, that the Interested Party shall have the
        right to be represented by advisory counsel of its own selection and at
        its own expense; and provided further, that if any such claim,
        proceeding, investigation or allegation involves both NAI and the
        Interested Party and the Interested Party shall have reasonably
        concluded that there are legal defenses available to it which are
        inconsistent with or in addition to those available to NAI, then the
        Interested Party shall have the right to select separate counsel to
        participate in the investigation and defense of and response to such
        claim, proceeding, investigation or allegation on its own behalf, and
        NAI shall pay or reimburse the Interested Party for all Attorney's Fees
        incurred by the Interested Party because of the selection of such
        separate counsel. If NAI fails to assume promptly (and in any event
        within fifteen days after being notified of the applicable claim,
        proceeding, investigation or allegation) the defense of the Interested
        Party, then the Interested Party may contest (or settle, with the prior
        consent of NAI, which consent will not be unreasonably withheld) the
        claim, proceeding, investigation or allegation at NAI's expense using
        counsel selected by the Interested Party. Moreover, if any such failure
        by NAI continues for forty-five days or more after NAI is notified of
        any such claim, proceeding, investigation or allegation, the Interested
        Party may elect not to contest or continue contesting the same and
        instead, in accordance with the written advice of counsel, settle (or
        pay in full) all

                                       12
<PAGE>   17

        claims related thereto without NAI's consent and without releasing NAI
        from any obligations to the Interested Party under this subparagraph
        5.(c).

               (d) Exceptions and Qualifications to Indemnities.

               (i) BNPLC acknowledges and agrees that nothing in subparagraph
        4.(a) or the preceding subparagraphs of this Paragraph 5 shall be
        construed to require NAI to pay or reimburse an Interested Party for (w)
        any costs or expenses incurred by BNPLC or any transferee to accomplish
        any Permitted Transfers described in clauses (2), (3), (4), (6) or (7)
        of the definition thereof in the Common Definitions and Provisions
        Agreement (Phase IV -- Land), (x) Excluded Taxes, (y) Losses incurred or
        suffered by such Interested Party that are proximately caused by (and
        attributed by any applicable principles of comparative fault to) the
        Established Misconduct of that Interested Party, or (z) Losses incurred
        or suffered by Participants in connection with their negotiation or
        execution of the Participation Agreement or Pledge Agreement (or
        supplements making them parties thereto) or in connection with any due
        diligence they may undertake before entering into the Participation
        Agreement or Pledge Agreement. Further, without limiting BNPLC's rights
        (as provided in other provisions of this Land Lease and other Operative
        Documents) to include the following in the calculation of Stipulated
        Loss Value or the Break Even Price or collect Base Rent, a Supplemental
        Payment and other amounts, the calculation of which depends upon the
        Stipulated Loss Value or the Break Even Price, BNPLC acknowledges and
        agrees that nothing in subparagraph 4.(a) or the preceding subparagraphs
        of this Paragraph 5 shall be construed to require NAI to pay or
        reimburse an Interested Party for:

               a)       costs previously paid by BNPLC with the proceeds of the
                        Prior Funding Advances; or

               b)       Construction Advances made under (and as defined in) the
                        Construction Management Agreement or the Other Lease
                        Agreement, including costs and expenditures incurred or
                        paid by or on behalf of BNPLC after any Landlord's
                        Election to Continue Construction under (and as defined
                        in) the Other Lease Agreement, to the extent that such
                        costs and expenditures are considered to be Construction
                        Advances pursuant to subparagraph 6(e) of the Other
                        Lease Agreement.

Further, if an Interested Party receives a written notice of Losses that such
Interested Party believes are covered by the indemnity in subparagraph 5.(c)(i),
then such Interested Party will be expected to promptly furnish a copy of such
notice to NAI. The failure to so provide a copy of the notice to NAI shall not
excuse NAI from its obligations under subparagraph 5.(c)(i); provided, that if
NAI is unaware of the matters described in the notice and such failure renders
unavailable defenses that NAI might otherwise assert, or precludes actions that
NAI might otherwise take, to minimize its obligations, then NAI shall be excused
from its obligation to indemnify such Interested Party (and any Affiliate of
such Interested Party) against the Losses, if any, which would not have been
incurred or suffered but for such failure. For example, if BNPLC fails to
provide NAI with a copy of a notice of an obligation covered by the indemnity
set out in subparagraph 5.(c)(i) and NAI is not otherwise already aware of such
obligation, and if

                                       13
<PAGE>   18


as a result of such failure BNPLC becomes liable for penalties and interest
covered by the indemnity in excess of the penalties and interest that would have
accrued if NAI had been promptly provided with a copy of the notice, then NAI
will be excused from any obligation to BNPLC (or any Affiliate of BNPLC) to pay
the excess.

        6.      INTENTIONALLY DELETED.

        7.      INTENTIONALLY DELETED.

        8.      ENVIRONMENTAL.

                (a) Environmental Covenants by NAI. NAI covenants that:

                (i) NAI shall not conduct or permit others to conduct Hazardous
        Substance Activities, except Permitted Hazardous Substance Use and
        Remedial Work.

                (ii) NAI shall not discharge or permit the discharge of anything
        on or from the Property that would require any permit under applicable
        Environmental Laws, other than (1) storm water runoff, (2) waste water
        discharges through a publicly owned treatment works, (3) discharges that
        are a necessary part of any Remedial Work, and (4) other similar
        discharges consistent with the definition herein of Permitted Hazardous
        Substance Use, in each case in strict compliance with Environmental
        Laws.

                (iii) Following any discovery that Remedial Work is required by
        Environmental Laws or otherwise believed by BNPLC to be reasonably
        required, and to the extent not inconsistent with the other provisions
        of this Land Lease, NAI shall promptly perform and diligently and
        continuously pursue such Remedial Work, in each case in strict
        compliance with Environmental Laws.

                (iv) If requested by BNPLC in connection with any Remedial Work
        required by this subparagraph, NAI shall retain independent
        environmental consultants acceptable to BNPLC to evaluate any
        significant new information generated during NAI's implementation of the
        Remedial Work and to discuss with NAI whether such new information
        indicates the need for any additional measures that NAI should take to
        protect the health and safety of persons (including employees,
        contractors and subcontractors and their employees) or to protect the
        environment. NAI shall implement any such additional measures to the
        extent required with respect to the Property by Environmental Laws or
        otherwise believed by BNPLC to be reasonably required and to the extent
        not inconsistent with the other provisions of this Land Lease.

                (b) Right of BNPLC to do Remedial Work Not Performed by NAI. If
NAI's failure to cure any breach of the covenants set forth in subparagraph
8.(a) continues beyond the Environmental Cure Period (as defined below), BNPLC
may, in addition to any other remedies available to it, conduct all or any part
of the Remedial Work. To the extent that Remedial Work is done by BNPLC pursuant
to the preceding sentence (including any removal of Hazardous Substances), the
cost thereof shall be a demand obligation owing by NAI to BNPLC. As used in this
subparagraph, "ENVIRONMENTAL CURE PERIOD" means the period ending on the earlier
of: (1) one hundred eighty days after NAI is notified of the breach which must
be cured within such

                                       14
<PAGE>   19

period, (2) the date that any writ or order is issued for the levy or sale of
any property owned by BNPLC (including the Property) because of such breach, (3)
the date that any criminal action is instituted or overtly threatened against
BNPLC or any of its directors, officers or employees because of such breach, or
(4) any Designated Sale Date upon which, for any reason, NAI or an Affiliate of
NAI or any Applicable Purchaser shall not purchase BNPLC's interest in the
Property pursuant to the Purchase Agreement for a net price to BNPLC (when taken
together with any Supplemental Payment made by NAI pursuant to Paragraph 1(A)(2)
of the Purchase Agreement, in the case of a purchase by an Applicable Purchaser)
equal to Stipulated Loss Value.

               (c) Environmental Inspections and Reviews. BNPLC reserves the
right to retain environmental consultants to review any report prepared by NAI
or to conduct BNPLC's own investigation to confirm whether NAI is complying with
the requirements of this Paragraph 8. NAI grants to BNPLC and to BNPLC's agents,
employees, consultants and contractors the right to enter upon the Property at
any time to inspect the Property and to perform such tests as BNPLC deems
necessary or appropriate to review or investigate Hazardous Substances in, on,
under or about the Property or any discharge or suspected discharge of Hazardous
Substances into groundwater or surface water from the Property. NAI shall
promptly reimburse BNPLC for the fees of its environmental consultants and the
costs of any such inspections and tests.

               (d) Communications Regarding Environmental Matters.

               (i) NAI shall immediately advise BNPLC of (1) any discovery of
        any event or circumstance which would render any of the representations
        of NAI herein or in the Closing Certificate concerning environmental
        matters materially inaccurate or misleading if made at the time of such
        discovery and assuming that NAI was aware of all relevant facts, (2) any
        Remedial Work (or change in Remedial Work) required or undertaken by NAI
        or its Affiliates in response to any (A) discovery of any Hazardous
        Substances on, under or about the Property other than Permitted
        Hazardous Substances or (B) any claim for damages resulting from
        Hazardous Substance Activities, (3) NAI's discovery of any occurrence or
        condition on any real property adjoining or in the vicinity of the
        Property which could cause the Property or any part thereof to be
        subject to any ownership, occupancy, transferability or use restrictions
        under Environmental Laws, or (4) any investigation or inquiry of any
        failure or alleged failure by NAI to comply with Environmental Laws
        affecting the Property by any governmental authority responsible for
        enforcing Environmental Laws. In such event, NAI shall deliver to BNPLC
        within thirty days after BNPLC's request, a preliminary written
        environmental plan setting forth a general description of the action
        that NAI proposes to take with respect thereto, if any, to bring the
        Property into compliance with Environmental Laws or to correct any
        breach by NAI of this Paragraph 8, including any proposed Remedial Work,
        the estimated cost and time of completion, the name of the contractor
        and a copy of the construction contract, if any, and such additional
        data, instruments, documents, agreements or other materials or
        information as BNPLC may request.

               (ii) NAI shall provide BNPLC with copies of all material written
        communications with federal, state and local governments, or agencies
        relating to the matters listed in the preceding clause (i). NAI shall
        also provide BNPLC with copies of



                                       15
<PAGE>   20

        any correspondence from third Persons which threaten litigation over any
        significant failure or alleged significant failure of NAI to maintain or
        operate the Property in accordance with Environmental Laws.

               (iii) Prior to NAI's submission of a Material Environmental
        Communication to any governmental or regulatory agency or third party,
        NAI shall, to the extent practicable, deliver to BNPLC a draft of the
        proposed submission (together with the proposed date of submission), and
        in good faith assess and consider any comments of BNPLC regarding the
        same. Promptly after BNPLC's request, NAI shall meet with BNPLC to
        discuss the submission, shall provide any additional information
        requested by BNPLC and shall provide a written explanation to BNPLC
        addressing the issues raised by comments (if any) of BNPLC regarding the
        submission, including a reasoned analysis supporting any decision by NAI
        not to modify the submission in accordance with comments of BNPLC.

        9.     INSURANCE REQUIRED AND CONDEMNATION.

               (a) Liability Insurance.

               (i) Prior to the Base Rent Commencement Date (All Buildings),
        NAI shall maintain commercial general liability insurance against claims
        for bodily and personal injury, death and property damage occurring in
        or upon or resulting from any occurrence in or upon the Property under
        one or more insurance policies that satisfy the requirements set forth
        in Exhibit B. Without limiting the generality of the foregoing, NAI
        certifies to BNPLC that NAI is, contemporaneously with the execution of
        this Lease and the other Operative Documents, obtaining such insurance.

               (ii) On and after the Base Rent Commencement Date (All
        Buildings), NAI will continue to maintain, or cause to be maintained,
        commercial general liability insurance against claims for bodily and
        personal injury, death and property damage occurring in or upon or
        resulting from any occurrence in or upon the Property, but in such
        amounts, with such insurance companies and upon such terms and
        conditions (including self-insurance, whether by deductible, retention,
        or otherwise) as are consistent with NAI's normal insurance practices
        for other similar properties. In any event, policies under which NAI
        maintains such insurance will provide, by endorsement or otherwise, that
        BNPLC and other Interested Parties are also insured thereunder against
        such claims with coverage that is not limited by any negligence or
        allegation of negligence on their part and with coverage that is
        primary, not merely excess over or contributory with the other
        commercial general liability coverage they may themselves maintain.

               (iii) NAI shall deliver and maintain with BNPLC for each
        liability insurance policy required by this Lease written confirmation
        of the policy and the scope of the coverage provided thereby issued by
        the applicable insurer or its authorized agent. With respect to
        insurance maintained prior to the Base Rent Commencement Date (All
        Buildings), such confirmation must also be in form consistent with the
        requirements set forth in Exhibit B.

               (b) Intentionally Deleted.

                                       16
<PAGE>   21

               (c) Failure to Obtain Insurance. If NAI fails to obtain any
insurance or to provide confirmation of any such insurance as required by this
Land Lease, BNPLC shall be entitled (but not required) to obtain the insurance
that NAI has failed to obtain or for which NAI has not provided the required
confirmation and, without limiting BNPLC's other remedies under the
circumstances, BNPLC may require NAI to reimburse BNPLC for the cost of such
insurance and to pay interest thereon computed at the Default Rate from the date
such cost was paid by BNPLC until the date of reimbursement by NAI (provided,
however, that any such insurance cost paid by BNPLC prior to the Base Rent
Commencement Date (All Buildings) will be charged against the Construction
Allowance under, and as defined in, the Construction Management Agreement as if
it had been paid by NAI).

               (d) Condemnation. Immediately upon obtaining knowledge of the
institution of any proceedings for the condemnation of the Property or any
portion thereof, or any other similar governmental or quasi-governmental
proceedings arising out of injury or damage to the Property or any portion
thereof, each party shall notify the other (provided, however, BNPLC shall have
no liability for its failure to provide such notice) of the pendency of such
proceedings. NAI shall, at its expense, diligently prosecute any such
proceedings and shall consult with BNPLC, its attorneys and experts and
cooperate with them as requested in the carrying on or defense of any such
proceedings. All proceeds of condemnation awards or proceeds of sale in lieu of
condemnation with respect to the Property and all judgments, decrees and awards
for injury or damage to the Property shall be paid to BNPLC as Escrowed
Proceeds, and all such proceeds will be applied as provided in Paragraph 10.
BNPLC is hereby authorized, in the name of NAI, at any time when an Event of
Default shall have occurred and be continuing, or otherwise with NAI's prior
consent, to execute and deliver valid acquittances for, and to appeal from, any
such judgment, decree or award concerning condemnation of any of the Property.
BNPLC shall not be in any event or circumstances liable or responsible for
failure to collect, or to exercise diligence in the collection of, any such
proceeds, judgments, decrees or awards.

               (e) Waiver of Subrogation. NAI, for itself and for any Person
claiming through it (including any insurance company claiming by way of
subrogation), waives any and every claim which arises or may arise in its favor
against BNPLC or any other Interested Party and the officers, directors, and
employees of the Interested Parties for any and all Losses, to the extent that
NAI is compensated by insurance or would be compensated by the insurance
policies contemplated in this Land Lease, but for any deductible or self-insured
retention maintained under such insurance or but for a failure of NAI to
maintain the insurance as required by this Land Lease. NAI agrees to have such
insurance policies properly endorsed so as to make them valid notwithstanding
this waiver, if such endorsement is required to prevent a loss of insurance.

        10.    APPLICATION OF INSURANCE AND CONDEMNATION PROCEEDS.

               (a) Collection and Application of Insurance and Condemnation
Proceeds Generally. This Paragraph 10 shall govern the application of proceeds
received by BNPLC or NAI during the Term from any third party (1) as
compensation for any restriction placed upon the use or development of the
Property or for the condemnation of the Property or any portion thereof, or (2)
because of any judgment, decree or award for injury or damage to the Property
(e.g., damage resulting from a third party's release of Hazardous Materials onto
the Property); excluding, however, any funds paid to BNPLC


                                       17
<PAGE>   22

by BNPLC's Parent, by an Affiliate of BNPLC or by any Participant that is made
to compensate BNPLC for any Losses BNPLC may suffer or incur in connection with
this Land Lease or the Property. NAI will promptly pay over to BNPLC any
insurance, condemnation or other proceeds covered by this Paragraph 10 which NAI
may receive from any insurer, condemning authority or other third party. All
proceeds covered by this Paragraph 10, including those received by BNPLC from
NAI or third parties, shall be applied as follows:

                      (i) First, proceeds covered by this Paragraph 10 will be
        used to reimburse BNPLC for any costs and expenses, including Attorneys'
        Fees, that BNPLC incurred to collect the proceeds.

                      (ii) Second, the proceeds remaining after such
        reimbursement to BNPLC (hereinafter, the "REMAINING PROCEEDS") will be
        applied, as hereinafter more particularly provided, either as a
        Qualified Prepayment or to reimburse NAI or BNPLC for the actual
        out-of-pocket costs of repairing or restoring the Property. Until,
        however, any Remaining Proceeds received by BNPLC are applied by BNPLC
        as a Qualified Prepayment or applied by BNPLC to reimburse costs of
        repairs to or restoration of the Property pursuant to this Paragraph 10,
        BNPLC shall hold and maintain such Remaining Proceeds as Escrowed
        Proceeds in an interest bearing account, and all interest earned on such
        account shall be added to and made a part of such Escrowed Proceeds.

               (b) Advances of Escrowed Proceeds to NAI. Except as otherwise
provided below in this Paragraph 10, BNPLC shall advance all Remaining Proceeds
held by it as Escrowed Proceeds to reimburse NAI for the actual out-of-pocket
cost to NAI of repairing or restoring the Property in accordance with the
requirements of this Land Lease and the other Operative Documents as the
applicable repair or restoration progresses and upon compliance by NAI with such
terms, conditions and requirements as may be reasonably imposed by BNPLC. In no
event, however, shall BNPLC be required to pay Escrowed Proceeds to NAI in
excess of the actual out-of-pocket cost to NAI of the applicable repair or
restoration, as evidenced by invoices or other documentation satisfactory to
BNPLC, it being understood that BNPLC may retain and apply any such excess as a
Qualified Prepayment.

               (c) Application of Escrowed Proceeds as a Qualified Prepayment.
Provided no Event of Default shall have occurred and be continuing, BNPLC shall
apply any Remaining Proceeds paid to it (or other amounts available for
application as a Qualified Prepayment) as a Qualified Prepayment on any date
that BNPLC is directed to do so by a notice from NAI; however, if such a notice
from NAI specifies an effective date for a Qualified Prepayment that is less
than five Business Days after BNPLC's actual receipt of the notice, BNPLC may
postpone the date of the Qualified Prepayment to any date not later than five
Business Days after BNPLC's receipt of the notice. In any event, except when
BNPLC is required by the preceding sentence to apply Remaining Proceeds or other
amounts as a Qualified Prepayment on a Base Rent Date, BNPLC may deduct Breakage
Costs incurred in connection with any Qualified Prepayment from the Remaining
Proceeds or other amounts available for application as the Qualified Prepayment,
and NAI will reimburse BNPLC upon request for any such Breakage Costs that BNPLC
incurs but does not deduct.

                                       18
<PAGE>   23

               (d) Special Provisions Applicable After an Event of Default.
Notwithstanding the foregoing, when any Event of Default shall have occurred and
be continuing, BNPLC shall be entitled to receive and collect all insurance,
condemnation or other proceeds governed by this Paragraph 10 and to apply all
Remaining Proceeds, when and to the extent deemed appropriate by BNPLC in its
sole discretion, either (A) to the reimbursement of NAI or BNPLC for the
out-of-pocket cost of repairing or restoring the Property, or (B) as Qualified
Prepayments.

               (e) NAI's Obligation to Restore. Regardless of the adequacy of
any Remaining Proceeds available to NAI hereunder, and notwithstanding other
provisions of this Land Lease to the contrary, if the Property is damaged by
fire or other casualty or less than all or substantially all of the Property is
taken by condemnation, NAI must:

                       A) increase the value of the Property or the remainder
               thereof by restoring the same (in a manner consistent with the
               requirements and limitations imposed by this Land Lease and the
               other Operative Documents or otherwise acceptable to BNPLC), or
               decrease Stipulated Loss Value by tendering a payment to BNPLC
               for application as a Qualified Prepayment, as necessary to cause
               Current AS IS Market Value to be not less than sixty percent
               (60%) of Stipulated Loss Value; and

                       B) restore the Property or the remainder thereof to a
               reasonably safe and sightly condition.

               (f) Takings of All or Substantially All of the Property on or
after the Base Rent Commencement Date (All Buildings). In the event of any
taking of all or substantially all of the Property on or after the Base Rent
Commencement Date (All Buildings), BNPLC shall be entitled to apply all
Remaining Proceeds as a Qualified Prepayment. In addition, if Stipulated Loss
Value immediately prior to any such taking exceeds the sum of the Remaining
Proceeds resulting from such condemnation, then BNPLC shall be entitled to
recover the excess from NAI upon demand as an additional Qualified Prepayment,
whereupon this Land Lease shall terminate. Any taking of so much of the Real
Property as, in BNPLC's reasonable good faith judgment, makes it impracticable
to restore or improve the remainder thereof as required by part (2) of the
preceding subparagraph shall be considered a taking of substantially all the
Property for purposes of this Paragraph 10.

        11.    ADDITIONAL REPRESENTATIONS, WARRANTIES AND COVENANTS OF NAI
CONCERNING THE PROPERTY. NAI represents, warrants and covenants as follows:

               (a) Compliance with Covenants and Laws. The use of the Property
permitted by this Land Lease complies, or will comply after NAI obtains
available permits as the tenant under this Land Lease, in all material respects
with all Applicable Laws. NAI has obtained or will promptly obtain all utility,
building, health and operating permits as may be required by any governmental
authority or municipality having jurisdiction over the Property for any
construction upon or use of the Property permitted by this Land Lease.

                                       19
<PAGE>   24

               (b) Operation of the Property. During the Term, NAI shall operate
the Property in a good and workmanlike manner and substantially in compliance
with all Applicable Laws and will pay or cause to be paid all fees or charges of
any kind in connection therewith. (If NAI does not promptly correct any failure
of the Property to comply with Applicable Laws that is the subject of a written
notice given to NAI or BNPLC by any governmental authority, then for purposes of
the preceding sentence, NAI shall be considered not to have maintained the
Property "substantially in accordance with Applicable Laws" whether or not the
noncompliance would be substantial in the absence of the notice.) During the
Term, NAI shall not use or occupy, or allow the use or occupancy of, the
Property in any manner which violates any Applicable Law or which constitutes a
public or private nuisance or which makes void, voidable or cancelable any
insurance then in force with respect thereto. During the Term, to the extent
that any of the following would, individually or in the aggregate, increase the
likelihood of a CMA Termination Event under (and as defined in) the Construction
Management Agreement or materially and adversely affect the value of the
Property or NAI's use, occupancy or operations on the Property, NAI shall not,
without BNPLC's prior consent: (i) initiate or permit any zoning
reclassification of the Property; (ii) seek any variance under existing zoning
ordinances applicable to the Property; (iii) use or permit the use of the
Property in a manner that would result in such use becoming a nonconforming use
under applicable zoning ordinances or similar laws, rules or regulations; (iv)
execute or file any subdivision plat affecting the Property; or (v) consent to
the annexation of the Property to any municipality. If (A) a change in the
zoning or other Applicable Laws affecting the permitted use or development of
the Property shall occur after the Base Rent Commencement Date (All Buildings)
that reduces the value of the Property, or (B) conditions or circumstances on or
about the Property are discovered after the Base Rent Commencement Date (All
Buildings) (such as the presence of an endangered species) which substantially
impede development and thereby reduce the value of the Property, and if after
any such reduction under clause (A) or (B) preceding the Current AS IS Market
Value of the Property is less than sixty percent (60%) of Stipulated Loss Value,
then NAI shall pay BNPLC upon request the amount by which Current AS IS Market
Value is less than sixty percent (60%) of Stipulated Loss Value, for application
as a Qualified Prepayment. During the Term, NAI shall not cause or permit any
drilling or exploration for, or extraction, removal or production of, minerals
from the surface or subsurface of the Property, and NAI shall not do any act
whereby the market value of the Property may reasonably be expected to be
materially lessened. During the Term, if NAI receives a written notice or claim
from any federal, state or other governmental entity that the Property is not in
compliance in any material respect with any Applicable Law, or that any action
may be taken against the owner of the Property because the Property does not
comply with Applicable Law, NAI shall promptly furnish a copy of such notice or
claim to BNPLC.

        Notwithstanding the foregoing, NAI may in good faith, by appropriate
proceedings, contest the validity and applicability of any Applicable Law with
respect to the Property, and pending such contest NAI shall not be deemed in
default hereunder because of the violation of such Applicable Law, if NAI
diligently prosecutes such contest to completion in a manner reasonably
satisfactory to BNPLC, and if NAI promptly causes the Property to comply with
any such Applicable Law upon a final determination by a court of competent
jurisdiction that the same is valid and applicable to the Property; provided,
however, in any event such contest shall be concluded and the violation of such
Applicable Law must be corrected by NAI and any claims asserted against BNPLC or
the Property because of such violation must be paid by NAI, all prior

                                       20
<PAGE>   25

to the earlier of (i) the date that any criminal prosecution is instituted or
overtly threatened against BNPLC or any of its directors, officers or employees
because of such violation, (ii) the date that any action is taken by any
governmental authority against BNPLC or any property owned by BNPLC (including
the Property) because of such violation, or (iii) a Designated Sale Date upon
which, for any reason, NAI or an Affiliate of NAI or any Applicable Purchaser
shall not purchase BNPLC's interest in the Property pursuant to the Purchase
Agreement for a price to BNPLC (when taken together with any additional payments
made by NAI pursuant to Paragraph 1(A)(2) of the Purchase Agreement, in the case
of a purchase by an Applicable Purchaser) equal to the Break Even Price.

               (c) Debts for Construction, Maintenance, Operation or
Development. NAI shall cause all debts and liabilities incurred in the
construction, maintenance, operation or development of the Property, including
all debts and liabilities for labor, material and equipment and all debts and
charges for utilities servicing the Property, to be promptly paid; provided,
that nothing in this subparagraph will be construed to require NAI to remove
Liens Removable by BNPLC.

        Notwithstanding the foregoing, NAI may in good faith, by appropriate
proceedings, contest the validity, applicability or amount of any asserted
mechanic's or materialmen's lien and pending such contest NAI shall not be
deemed in default under this subparagraph because of the contested lien if (1)
within sixty days after being asked to do so by BNPLC, NAI bonds over to BNPLC's
reasonable satisfaction all such contested liens against the Property alleged to
secure an amount in excess of $500,000 (individually or in the aggregate), (2)
NAI diligently prosecutes such contest to completion in a manner reasonably
satisfactory to BNPLC, and (3) NAI promptly causes to be paid any amount
adjudged by a court of competent jurisdiction to be due, with all costs and
interest thereon, promptly after such judgment becomes final; provided, however,
that in any event each such contest shall be concluded and the lien, interest
and costs must be paid by NAI prior to the earlier of (i) the date that any
criminal prosecution is instituted or overtly threatened against BNPLC or its
directors, officers or employees because of the nonpayment thereof, (ii) the
date that any writ or order is issued under which the Property or any other
property in which BNPLC has an interest may be seized or sold or any other
action is taken against BNPLC or any property in which BNPLC has an interest
because of the nonpayment thereof, or (iii) a Designated Sale Date upon which,
for any reason, NAI or an Affiliate of NAI or any Applicable Purchaser shall not
purchase BNPLC's interest in the Property pursuant to the Purchase Agreement for
a price to BNPLC (when taken together with any additional payments made by NAI
pursuant to Paragraph 1(A)(2) of the Purchase Agreement, in the case of a
purchase by an Applicable Purchaser) equal to the Break Even Price.

               (d) Repair, Maintenance, Alterations and Additions. NAI shall
keep the Property in good order, operating condition and appearance and shall
cause all necessary repairs, renewals and replacements to be promptly made. NAI
will not allow any of the Property to be materially misused, abused or wasted.
NAI shall not, without the prior consent of BNPLC, make material new
Improvements or alter Improvements in any material respect , except as part of
the work performed in accordance with the Construction Management Agreement.
Without limiting the foregoing, NAI will notify BNPLC before making any
significant alterations to the Improvements after the completion of the
Construction Project. Nothing in this subparagraph, however, is intended to
limit NAI's rights and obligations under other express provisions of the

                                       21
<PAGE>   26

Other Lease Agreement and the Construction Management Agreement with respect to
the Construction Project.

               (e) Permitted Encumbrances and Development Documents. NAI shall
during the Term comply with and will cause to be performed all of the covenants,
agreements and obligations imposed upon the owner of any interest in the
Property by the Permitted Encumbrances (including the Premises Lease) or the
Development Documents. Without limiting the foregoing, NAI shall cause all
amounts to be paid when due, the payment of which is secured by any Lien against
the Property created by the Permitted Encumbrances. Without the prior consent of
BNPLC, NAI shall not enter into, initiate, approve or consent to any
modification of any Permitted Encumbrance or Development Document that would
create or expand or purport to create or expand obligations or restrictions
which would encumber BNPLC's interest in the Property. (Whether BNPLC must give
any such consent requested by NAI during the Term of this Land Lease shall be
governed by subparagraph 3(A) of the Closing Certificate and Agreement.)

               (f) Books and Records Concerning the Property. NAI shall keep
books and records that are accurate and complete in all material respects for
the Property and, subject to Paragraph 16.(c), will permit all such books and
records to be inspected and copied by BNPLC. This subparagraph shall not be
construed as requiring NAI to regularly maintain separate books and records
relating exclusively to the Property; provided, however, that upon request, NAI
shall construct or abstract from its regularly maintained books and records
information required by this subparagraph relating to the Property.

        12.    FINANCIAL COVENANTS AND OTHER COVENANTS INCORPORATED BY
REFERENCE TO SCHEDULE 1. Throughout the Term of this Land Lease, NAI shall
comply with the requirements of Schedule 1 attached hereto.

        13.    FINANCIAL STATEMENTS AND OTHER REPORTS.

               (a) Financial Statements; Required Notices; Certificates.
Throughout the Term of this Land Lease, NAI shall deliver to BNPLC and to each
Participant:

               (i) as soon as available and in any event within one hundred
        twenty days after the end of each fiscal year of NAI, a consolidated
        balance sheet of NAI and its Consolidated Subsidiaries as of the end of
        such fiscal year and a consolidated income statement and statement of
        cash flows of NAI and its Consolidated Subsidiaries for such fiscal
        year, all in reasonable detail and all prepared in accordance with GAAP
        and accompanied by a report and opinion of accountants of national
        standing selected by NAI, which report and opinion shall be prepared in
        accordance with generally accepted auditing standards and shall not be
        subject to any qualifications or exceptions as to the scope of the audit
        nor to any qualification or exception which BNPLC determines, in BNPLC's
        reasonable discretion, is unacceptable;

               (ii) as soon as available and in any event within sixty days
        after the end of each of the first three quarters of each fiscal year of
        NAI, the consolidated balance sheet of NAI and its Consolidated
        Subsidiaries as of the end of such quarter and the

                                       22
<PAGE>   27

        consolidated income statement and the consolidated statement of cash
        flows of NAI and its Consolidated Subsidiaries for the period commencing
        at the end of the previous fiscal year and ending with the end of such
        quarter, all in reasonable detail and all prepared in accordance with
        GAAP and certified by the chief financial officer or controller of NAI
        (subject to year-end adjustments);

                (iii) together with the financial statements furnished in
        accordance with subparagraph 13.(a)(i) and 13.(a)(ii), a certificate of
        the chief financial officer or controller of NAI: (i) certifying that to
        the knowledge of NAI no Default or Event of Default under this Land
        Lease has occurred and is continuing or, if a Default or Event of
        Default has occurred and is continuing, a brief statement as to the
        nature thereof and the action which is proposed to be taken with respect
        thereto, (ii) certifying that the representations of NAI set forth in
        the Operative Documents are true and correct in all material respects as
        of the date thereof as though made on and as of the date thereof or, if
        not then true and correct, a brief statement as to why such
        representations are no longer true and correct, and (iii) with
        computations demonstrating compliance with the financial covenants
        contained in Schedule 1;

                (iv) within five days after the end of each calendar month, a
        certificate of the chief financial officer or controller of NAI
        certifying that at the end of the preceding calendar month, NAI had
        sufficient cash and other assets described in Paragraph 1 of Part II of
        Schedule 1 to comply with the requirements of that paragraph;

                (v) promptly after the sending or filing thereof, copies of all
        proxy statements, financial statements and reports which NAI sends to
        NAI's stockholders, and copies of all regular, periodic and special
        reports, and all registration statements (other than registration
        statements on Form S-8 or any form substituted therefor) which NAI files
        with the Securities and Exchange Commission or any governmental
        authority which may be substituted therefor, or with any national
        securities exchange;

                (vi) upon request by BNPLC, a statement in writing certifying
        that the Operative Documents are unmodified and in full effect (or, if
        there have been modifications, that the Operative Documents are in full
        effect as modified, and setting forth such modifications) and the dates
        to which the Base Rent has been paid and either stating that to the
        knowledge of NAI no Default or Event of Default under this Land Lease
        has occurred and is continuing or, if a Default or Event of Default
        under this Land Lease has occurred and is continuing, a brief statement
        as to the nature thereof; it being intended that any such statement by
        NAI may be relied upon by any prospective purchaser or mortgagee of the
        Property and by the Participants

                (vii) as soon as possible after, and in any event within ten
        days after NAI becomes aware that, any of the following has occurred,
        with respect to which the potential aggregate liability to NAI relating
        thereto is $500,000 or more, a notice signed by a senior financial
        officer of NAI setting forth details of the following and the response,
        if any, which NAI or its ERISA Affiliate proposes to take with respect
        thereto (and a copy of any report or notice required to be filed with or
        given to PBGC by NAI or an ERISA Affiliate with respect to any of the
        following or the events or conditions leading

                                       23
<PAGE>   28

        up to the following): (A) the assertion, to secure any Unfunded Benefit
        Liabilities, of any Lien against the assets of NAI, against the assets
        of any Plan or Multiemployer Plan or against any interest of BNPLC or
        NAI in the Property, or (B) the taking of any action by the PBGC or any
        other governmental authority against NAI to terminate any Plan of NAI or
        any ERISA Affiliate of NAI or to cause the appointment of a trustee or
        receiver to administer any such Plan ; and

               (viii) such other information respecting the condition or
        operations, financial or otherwise, of NAI, of any of its Subsidiaries
        or of the Property as BNPLC or any Participant through BNPLC may from
        time to time reasonably request.

BNPLC is hereby authorized to deliver a copy of any information or certificate
delivered to it pursuant to this subparagraph 13.(a) to BNPLC's Parent, to the
Participants and to any regulatory body having jurisdiction over BNPLC or
BNPLC's Parent or any Participant that requires or requests it.

        14.    ASSIGNMENT AND SUBLETTING BY NAI.

               (a) BNPLC's Consent Required. Without the prior consent of BNPLC,
NAI shall not assign, transfer, mortgage, pledge or hypothecate this Land Lease
or any interest of NAI hereunder and shall not sublet all or any part of the
Property, by operation of law or otherwise; provided, that this provision will
not be construed to prohibit (I) any sublease of space within Improvements
expressly permitted by the Other Lease Agreement and (II) subject to
subparagraph 14.(c) below, this provision shall not be construed to prohibit any
Premises Lease described in the Other Common Definitions and Provisions
Agreement or any transfer or sublease by a lessee thereunder which is authorized
by the Premises Lease.

               (b) Standard for BNPLC's Consent to Assignments and Certain Other
Matters. Consents and approvals of BNPLC which are required by this Paragraph 14
will not be unreasonably withheld or delayed, but NAI acknowledges that BNPLC's
withholding of such consent or approval shall be reasonable if BNPLC determines
in good faith that (1) giving the approval may materially increase BNPLC's risk
of liability for any existing or future environmental problem, or (2) giving the
approval is likely to increase BNPLC's administrative burden of complying with
or monitoring NAI's compliance with the requirements of this Land Lease.

               (c) Consent Not a Waiver. No consent by BNPLC to a sale,
assignment, transfer, mortgage, pledge or hypothecation of this Land Lease or
NAI's interest hereunder, and no assignment or subletting of the Property or any
part thereof in accordance with this Land Lease or otherwise with BNPLC's
consent, shall release NAI from liability hereunder; and any such consent shall
apply only to the specific transaction thereby authorized and shall not relieve
NAI from any requirement of obtaining the prior consent of BNPLC to any further
sale, assignment, transfer, mortgage, pledge or hypothecation of this Land Lease
or any interest of NAI hereunder.

                                       24
<PAGE>   29

        15.    ASSIGNMENT BY BNPLC.

               (a) Restrictions on Transfers. Except by a Permitted Transfer,
BNPLC shall not assign, transfer, mortgage, pledge, encumber or hypothecate this
Land Lease or the other Operative Documents or any interest of BNPLC in and to
the Property during the Term without the prior consent of NAI, which consent NAI
may withhold in its sole discretion. Further, notwithstanding anything to the
contrary herein contained, if withholding taxes are imposed on the rents and
other amounts payable to BNPLC hereunder because of BNPLC's assignment of this
Land Lease to any citizen of, or any corporation or other entity formed under
the laws of, a country other than the United States, NAI shall not be required
to compensate BNPLC or any such assignee for the withholding tax. If, in breach
of this subparagraph, BNPLC transfer the Property or any part thereof by a
conveyance or that does not constitute a Permitted Transfer, with the result
that additional transfer taxes or other Impositions are assessed against the
Property or the owner thereof, BNPLC shall be required to pay such additional
transfer taxes or other Impositions.

               (b) Effect of Permitted Transfer or other Assignment by BNPLC.
If, without breaching subparagraph 15.(a), BNPLC sells or otherwise transfers
the Property and assigns all of its rights under this Land Lease and the other
Operative Documents, then BNPLC shall thereby be released from any obligations
arising after such assumption under this Land Lease or the other Operative
Documents, and NAI shall look solely to each successor in interest of BNPLC for
performance of such obligations.

        16.    BNPLC'S RIGHT OF ACCESS.

               (a) During the Term, BNPLC and BNPLC's representatives may
(subject to subparagraph 16.(c)) enter the Property at any reasonable time after
five Business Days advance written notice to NAI for the purpose of making
inspections or performing any work BNPLC is authorized to undertake by the next
subparagraph or for the purpose confirming whether NAI has complied with the
requirements of this Land Lease or the other Operative Documents.

               (b) If NAI fails to perform any act or to take any action
required of it by this Land Lease or the Closing Certificate, or to pay any
money which NAI is required by this Land Lease or the Closing Certificate to
pay, and if such failure or action constitutes an Event of Default or renders
BNPLC or any director, officer, employee or Affiliate of BNPLC at risk of
criminal prosecution or renders BNPLC's interest in the Property or any part
thereof at risk of forfeiture by forced sale or otherwise, then in addition to
any other remedies specified herein or otherwise available, BNPLC may, perform
or cause to be performed such act or take such action or pay such money. Any
expenses so incurred by BNPLC, and any money so paid by BNPLC, shall be a demand
obligation owing by NAI to BNPLC. Further, BNPLC, upon making such payment,
shall be subrogated to all of the rights of the person, corporation or body
politic receiving such payment. But nothing herein shall imply any duty upon the
part of BNPLC to do any work which under any provision of this Land Lease NAI
may be required to perform, and the performance thereof by BNPLC shall not
constitute a waiver of NAI's default. BNPLC may during the progress of any such
work permitted by BNPLC hereunder on or in the Property keep and store upon the
Property all necessary materials, tools, and equipment. BNPLC shall not in any
event be liable for inconvenience, annoyance, disturbance, loss of business, or
other damage


                                       25
<PAGE>   30

to NAI or the subtenants or invitees of NAI by reason of making such repairs or
the performance of any such work on or in the Property, or on account of
bringing materials, supplies and equipment into or through the Property during
the course of such work (except for any liability in excess of the liability
insurance limits established in Exhibit B resulting from death or injury or
damage to the property of third parties caused by the Established Misconduct of
BNPLC or its officers, employees, or agents in connection therewith), and the
obligations of NAI under this Land Lease shall not thereby be excused in any
manner.

               (c) NAI shall have no obligation to provide proprietary
information (as defined in the next sentence) to BNPLC, except and to the extent
that (1) BNPLC reasonably determines that BNPLC cannot accomplish the purposes
of BNPLC's inspection of the Property or exercise of other rights granted
pursuant to the various express provisions of this Land Lease and the other
Operative Documents without evaluating such information. For purposes of this
Land Lease "proprietary information" includes NAI's intellectual property, trade
secrets and other confidential information of value to NAI about, among other
things, NAI's manufacturing processes, products, marketing and corporate
strategies, but in no event will "proprietary information" include any
disclosure of substances and materials (and their chemical composition) which
are or previously have been present in, on or under the Property at the time of
any inspections by BNPLC, nor will "PROPRIETARY INFORMATION" include any
additional disclosures reasonably required to permit BNPLC to determine whether
the presence of such substances and materials has constituted a violation of
Environmental Laws. In addition, under no circumstances shall NAI have any
obligation to disclose to BNPLC or any other party any proprietary information
of NAI (including, without limitation, any pending applications for patents or
trademarks, any research and design and any trade secrets) except if and to the
limited extent reasonably necessary to comply with the express provisions of
this Land Lease or the other Operative Documents.

        17.    EVENTS OF DEFAULT. Each of the following events shall be an
"EVENT OF DEFAULT" by NAI under this Land Lease:

        (a) NAI shall fail to pay when due any installment of Rent due hereunder
and such failure shall continue for three (3) Business Days after NAI is
notified in writing thereof.

        (b) NAI shall fail to cause any representation or warranty of NAI
contained herein or in the Closing Certificate that was false or misleading in
any material respect when made to be made true and not misleading (other than as
described in the other clauses of this Paragraph 17), or NAI shall fail to
comply with any term, provision or covenant of this Land Lease or the Closing
Certificate (other than as described in the other clauses of this Paragraph 17),
and in either case shall not cure such failure prior to the earlier of (A)
thirty days after written notice thereof is sent to NAI or (B) the date any writ
or order is issued for the levy or sale of any property owned by BNPLC
(including the Property) or any criminal prosecution is instituted or overtly
threatened against BNPLC or any of its directors, officers or employees because
of such failure; provided, however, that so long as no such writ or order is
issued and no such criminal prosecution is instituted or overtly threatened, the
period within which such failure may be cured by NAI shall be extended for a
further period (not to exceed an additional sixty days) as shall be necessary
for the curing thereof with diligence, if (but only if) (x) such failure is
susceptible of cure but cannot with reasonable diligence be cured within such
thirty day period, (y) NAI shall

                                       26
<PAGE>   31

promptly have commenced to cure such failure and shall thereafter continuously
prosecute the curing thereof with reasonable diligence and (z) the extension of
the period for cure will not, in any event, cause the period for cure to extend
beyond five days prior to the expiration of this Land Lease.

        (c) NAI shall abandon the Property.

        (d) NAI or any Subsidiary shall fail to make any payment or payments of
principal, premium or interest, of Debt of NAI described in the next sentence
when due (taking into consideration the time NAI may have to cure such failure,
if any, under the documents governing such Debt). As used in this clause
14(a)(v), "DEBT" shall include only Debt (as defined in the Common Definitions
and Provisions Agreement (Phase IV -- Land)) of NAI or any of its Subsidiaries
now existing or arising in the future (a) payable to BNPLC or any Affiliate of
BNPLC, or (B) payable to any other Person and with respect to which $3,000,000
or more is actually due and payable because of acceleration or otherwise.

        (e) NAI: (a) shall generally not, or be unable to, or shall admit in
writing its inability to, pay its debts as such debts become due; or (b) shall
make an assignment for the benefit of creditors, petition or apply to any
tribunal for the appointment of a custodian, receiver or trustee for it or a
substantial part of its assets; or (c) shall file any petition or application to
commence any proceeding under any bankruptcy, reorganization, arrangement,
readjustment of debt, dissolution or liquidation law or statute of any
jurisdiction, whether now or hereafter in effect; or (d) shall have had any such
petition or application filed against it; or (e) by any act or omission shall
indicate its consent to, approval of or acquiescence in any such petition,
application or proceeding or order for relief or the appointment of a custodian,
receiver or trustee for all or any substantial part of its property; or (f)
shall suffer any such custodianship, receivership or trusteeship to continue
undischarged for a period of sixty days or more.

        (f) One or more final judgments, decrees or orders for the payment of
money in excess of $3,000,000 in the aggregate shall be rendered against NAI and
such judgments, decrees or orders shall continue unsatisfied and in effect for a
period of thirty consecutive days without NAI's having obtained an agreement (or
after the expiration or termination of an agreement) of the Persons entitled to
enforce such judgment, decrees or orders not to enforce the same pending
negotiations with NAI concerning the satisfaction or other discharge of the
same.

        (g) NAI shall breach the requirements of Paragraph 12, which by
reference to Schedule 1 establishes certain financial covenants and other
requirements.

        (h) as of the effective date of this Land Lease, any of the
representations or warranties of NAI contained in subparagraphs 2(A) -- (J) of
the Closing Certificate shall be false or misleading in any material respect.

        (i) NAI shall fail to pay the full amount of any Supplemental Payment
required by the Purchase Agreement on the Designated Sale Date or shall fail to
provide Collateral as and when due pursuant to the Pledge Agreements.

                                       27
<PAGE>   32

        (j) NAI shall fail to comply with any term, provision or condition of
the Pledge Agreements after the expiration of any applicable notice and cure
period set forth in the Pledge Agreements.

        18.    REMEDIES.

               (a) Basic Remedies. At any time after an Event of Default and
after BNPLC has given any notice required by subparagraph 18.(b), BNPLC shall be
entitled at BNPLC's option (and without limiting BNPLC in the exercise of any
other right or remedy BNPLC may have, and without any further demand or notice
except as expressly described in this subparagraph 18.(a)), to exercise any one
or more of the following remedies:

               (i) By notice to NAI, BNPLC may terminate NAI's right to
        possession of the Property. A notice given in connection with unlawful
        detainer proceedings specifying a time within which to cure a default
        shall terminate NAI's right to possession if NAI fails to cure the
        default within the time specified in the notice.

               (ii) Upon termination of NAI's right to possession and without
        further demand or notice, BNPLC may re-enter the Property in any manner
        not prohibited by Applicable Law and take possession of all
        improvements, additions, alterations, equipment and fixtures thereon and
        remove any persons in possession thereof. Any property on the Land may
        be removed and stored in a warehouse or elsewhere at the expense and
        risk of and for the account of NAI.

               (iii) Upon termination of NAI's right to possession, this Land
        Lease shall terminate and BNPLC may recover from NAI:

                     a) The worth at the time of award of the unpaid Rent which
               had been earned at the time of termination;

                     b) The worth at the time of award of the amount by which
               the unpaid Rent which would have been earned after termination
               until the time of award exceeds the amount of such rental loss
               that NAI proves could have been reasonably avoided;

                     c) The worth at the time of award of the amount by which
               the unpaid Rent for the balance of the scheduled Term after the
               time of award exceeds the amount of such rental loss that NAI
               proves could be reasonably avoided; and

                     d) Any other amount necessary to compensate BNPLC for all
               the detriment proximately caused by NAI's failure to perform
               NAI's obligations under this Land Lease or which in the ordinary
               course of things would be likely to result therefrom, including
               the costs and expenses (including Attorneys' Fees, advertising
               costs and brokers' commissions) of recovering possession of the
               Property, removing persons or property therefrom, placing the
               Property in good order, condition, and repair, preparing and
               altering the Property for reletting, all other costs and
               expenses of reletting, and any loss incurred by BNPLC as a
               result

                                       28
<PAGE>   33

                of NAI's failure to perform NAI's obligations under the other
                Operative Documents.

                The "WORTH AT THE TIME OF AWARD" of the amounts referred to in
                subparagraph 18.(a)(iii)a) and subparagraph 18.(a)(iii)b) shall
                be computed by allowing interest at the Default Rate. The "WORTH
                AT THE TIME OF AWARD" of the amount referred to in subparagraph
                18.(a)(iii)c) shall be computed by discounting such amount at
                the discount rate of the Federal Reserve Bank of San Francisco
                at the time of award plus one percent (1%).

                      e) Such other amounts in addition to or in lieu of the
                foregoing as may be permitted from time to time by applicable
                California law.

                (iv) BNPLC shall have the remedy described in California Civil
        Code Section 1951.4 (lessor may continue lease in force even after
        lessee's breach and abandonment and recover rent as it becomes due, if
        lessee has right to sublet or assign, subject only to reasonable
        limitations). Accordingly, even if NAI has breached this Land Lease and
        abandoned the Property, this Land Lease shall continue in effect for so
        long as BNPLC does not terminate NAI's right to possession, and BNPLC
        may enforce all of BNPLC's rights and remedies under this Land Lease,
        including the right to recover the Rent as it becomes due under this
        Land Lease. NAI's right to possession shall not be deemed to have been
        terminated by BNPLC except pursuant to subparagraph 18.(a)(i) hereof.
        The following shall not constitute a termination of NAI's right to
        possession:

                a) Acts of maintenance or preservation or efforts to relet the
        Property;

                b) The appointment of a receiver upon the initiative of BNPLC to
        protect BNPLC's interest under this Land Lease; or

                c) Reasonable withholding of consent to an assignment or
        subletting, or terminating a subletting or assignment by NAI.

               (b) Notice Required So Long As the Purchase Option and NAI's
Initial Remarketing Rights and Obligations Continue Under the Purchase
Agreement. So long as NAI remains in possession of the Property and there has
been no termination of the Purchase Option and NAI's Initial Remarketing Rights
and Obligations as provided Paragraph 4 of the Purchase Agreement, BNPLC's right
to exercise remedies provided in subparagraph 18.(a) will be subject to the
condition precedent that BNPLC shall have notified NAI, at a time when an Event
of Default shall have occurred and be continuing, of BNPLC's intent to exercise
remedies provided in subparagraph 18.(a) at least sixty days prior to exercising
the remedies. The condition precedent is intended to provide NAI with an
opportunity to exercise the Purchase Option or NAI's Initial Remarketing Rights
and Obligations before losing possession of the Property pursuant to
subparagraph 18.(a). The condition precedent is not, however, intended to extend
any period for curing an Event of Default. Accordingly, if an Event of Default
has occurred, and regardless of whether any Event of Default is then continuing,
BNPLC may proceed immediately to exercise remedies provided in subparagraph
18.(a) at any time after the earlier of (i) sixty days after BNPLC has given
such a notice to NAI, (ii) any date upon which NAI relinquishes

                                       29
<PAGE>   34

possession of the Property, or (iii) any termination of the Purchase Option and
NAI's Initial Remarketing Rights and Obligations.

               (c) Enforceability. This Paragraph 18 shall be enforceable to the
maximum extent not prohibited by Applicable Law, and the unenforceability of any
provision in this Paragraph shall not render any other provision unenforceable.

               (d) Remedies Cumulative. No right or remedy herein conferred upon
or reserved to BNPLC is intended to be exclusive of any other right or remedy,
and each and every such right and remedy shall be cumulative and in addition to
any other right or remedy given to BNPLC hereunder or now or hereafter existing
in favor of BNPLC under Applicable Law or in equity. In addition to other
remedies provided in this Land Lease, BNPLC shall be entitled, to the extent
permitted by Applicable Law or in equity, to injunctive relief in case of the
violation, or attempted or threatened violation, of any of the covenants,
agreements, conditions or provisions of this Land Lease, or to a decree
compelling performance of any of the other covenants, agreements, conditions or
provisions of this Land Lease to be performed by NAI, or to any other remedy
allowed to BNPLC at law or in equity. Nothing contained in this Land Lease shall
limit or prejudice the right of BNPLC to prove for and obtain in proceedings for
bankruptcy or insolvency of NAI by reason of the termination of this Land Lease,
an amount equal to the maximum allowed by any statute or rule of law in effect
at the time when, and governing the proceedings in which, the damages are to be
proved, whether or not the amount be greater, equal to, or less than the amount
of the loss or damages referred to above. Without limiting the generality of the
foregoing, nothing contained herein shall modify, limit or impair any of the
rights and remedies of BNPLC under the Purchase Documents, and BNPLC shall not
be required to give the sixty day notice described in subparagraph 18.(b) as a
condition precedent to any acceleration of the Designated Sale Date or to taking
any action to enforce the Purchase Documents.

        19.    DEFAULT BY BNPLC. If BNPLC should default in the performance of
any of its obligations under this Land Lease, BNPLC shall have the time
reasonably required, but in no event less than thirty days, to cure such default
after receipt of notice from NAI specifying such default and specifying what
action NAI believes is necessary to cure the default. If NAI prevails in any
litigation brought against BNPLC because of BNPLC's failure to cure a default
within the time required by the preceding sentence, then NAI shall be entitled
to an award against BNPLC for the monetary damages proximately caused to NAI by
such default.

        Notwithstanding the foregoing, BNPLC's right to cure as provided in this
Paragraph 19 will not in any event extend the time within which BNPLC must
remove Liens Removable by BNPLC as required by Paragraph 20 beyond the
Designated Sale Date.

                                       30
<PAGE>   35

        20.     QUIET ENJOYMENT. Provided NAI pays the Base Rent and all
Additional Rent payable hereunder as and when due and payable and keeps and
fulfills all of the terms, covenants, agreements and conditions to be performed
by NAI hereunder, BNPLC shall not during the Term disturb NAI's peaceable and
quiet enjoyment of the Property; however, such enjoyment shall be subject to the
terms, provisions, covenants, agreements and conditions of this Land Lease, to
Permitted Encumbrances, to Development Documents and to any other claims not
constituting Liens Removable by BNPLC. If any Lien Removable by BNPLC is claimed
against the Property, BNPLC will remove the Lien Removable by BNPLC promptly.
Any breach by BNPLC of this Paragraph shall render BNPLC liable to NAI for any
monetary damages proximately caused thereby, but as more specifically provided
in subparagraph 4.(b) above, no such breach shall entitle NAI to terminate this
Land Lease or excuse NAI from its obligation to pay Rent.

        21.     SURRENDER UPON TERMINATION. Unless NAI or an Applicable
Purchaser purchases or has purchased BNPLC's entire interest in the Property
pursuant to the terms of the Purchase Agreement and BNPLC's entire interest in
the Improvements and other "Property" under (and as defined in) the Other
Purchase Agreement, NAI shall, upon the termination of NAI's right to occupancy,
surrender to BNPLC the Property, including Improvements constructed by NAI and
fixtures and furnishings included in the Property, free of all Hazardous
Substances (including Permitted Hazardous Substances) and tenancies and with all
Improvements in substantially the same condition as of the date the same were
initially completed, excepting only (i) ordinary wear and tear that occurs
between the maintenance, repairs and replacements required by other provisions
of this Land Lease or the Other Lease Agreement, and (ii) demolition,
alterations and additions which are expressly permitted by the terms of this
Land Lease or the Other Lease Agreement and which have been completed by NAI in
a good and workmanlike manner in accordance with all Applicable Laws. Any
movable furniture or movable personal property belonging to NAI or any party
claiming under NAI, if not removed at the time of such termination and if BNPLC
shall so elect, shall be deemed abandoned and become the property of BNPLC
without any payment or offset therefor. If BNPLC shall not so elect, BNPLC may
remove such property from the Property and store it at NAI's risk and expense.

        22.     HOLDING OVER BY NAI. Should NAI not purchase BNPLC's right,
title and interest in the Property as provided in the Purchase Agreement, but
nonetheless continue to hold the Property after the termination of this Land
Lease without BNPLC's consent, whether such termination occurs by lapse of time
or otherwise, such holding over shall constitute and be construed as a tenancy
from day to day only, at a daily Base Rent equal to: (i) Stipulated Loss Value
on the day in question, times (ii) the Default Rate for such day; divided by
(iii) three hundred and sixty; subject, however, to all of the terms,
provisions, covenants and agreements on the part of NAI hereunder. No payments
of money by NAI to BNPLC after the termination of this Land Lease shall
reinstate, continue or extend the Term of this Land Lease and no extension of
this Land Lease after the termination thereof shall be valid unless and until
the same shall be reduced to writing and signed by both BNPLC and NAI.

                                       31
<PAGE>   36

        23.     INDEPENDENT OBLIGATIONS EVIDENCED BY THE OTHER OPERATIVE
DOCUMENTS. NAI acknowledges and agrees that nothing contained in this Land Lease
shall limit, modify or otherwise affect any of NAI's obligations under the other
Operative Documents, which obligations are intended to be separate, independent
and in addition to, and not in lieu of, the obligations set forth herein. In the
event of any inconsistency between the express terms and provisions of the
Purchase Documents and the express terms and provisions of this Land Lease, the
express terms and provisions of the Purchase Documents shall control. In the
event of any inconsistency between the express terms and provisions of the
Closing Certificate and the express terms and provisions of this Land Lease, the
express terms and provisions of this Land Lease shall control; provided, nothing
herein will limit or impair NAI's obligations under the Closing Certificate
following any expiration of termination of this Land Lease.

        24.     AMENDMENT AND RESTATEMENT. This Land Lease amends, restates and
replaces the Prior Lease Agreement referenced in the recitals at the beginning
of this Agreement.

                          [The signature pages follow.]

                                       32
<PAGE>   37

        IN WITNESS WHEREOF, NAI and BNPLC have caused this Land Lease to be
executed as of October 2, 2000.



                              "NAI"

                              NETWORK APPLIANCE, INC.

                              By:
                                   -------------------------------------------
                              Name:
                                      ----------------------------------------
                              Title:
                                     -----------------------------------------


                                       33
<PAGE>   38

[Continuation of signature pages to Land Lease dated to be effective as of
October 2, 2000.]



                         "BNPLC"

                         BNP LEASING CORPORATION

                         By:
                              -------------------------------------------
                               Lloyd G. Cox, Senior Vice President


                                       34
<PAGE>   39

                                    EXHIBIT A

                                LEGAL DESCRIPTION

The real property located in the City of Sunnyvale, County of Santa Clara, State
of California, described as follows:

TRACT 1:

All of Parcel 2, as shown upon that certain Map entitled, "Parcel Map lying
within the City of Sunnyvale, being a resubdivision of a portion of Parcel B, as
shown upon that certain Parcel Map recorded in Book 345 of Maps, at page 20,
Santa Clara County Records", which Map was filed for record in the Office of the
Recorder of the County of Santa Clara, State of California, on November 17,
1976, in Book 383 of Maps, at page 35.

TRACT 2:

Together with an easement for vehicles parking over the following described
property:

A 7-foot strip of land for parking easement purposes over a portion of Parcel A,
as said Parcel A is shown on that certain Parcel Map filed for record on
November 10, 1974 in Book 292 of Maps, at page 41, records of said County, and
being more particularly described as follows:

Commencing at the Northeast corner of said Parcel A; thence North
75(degree)8'27" West 500.00 feet along the Northeasterly line of said Parcel A;
thence South 14(degree)51'33" West 7.00 feet; thence parallel to Northeasterly
line of said Parcel A, South 75(degree)08'27" East 500.00 feet to the Southeast
line of said Parcel A, North 14(degree)51'33" East 7.00 feet to the point of
beginning.

APN:  110-32-002
ARB:  110-3-65.02

TRACT 3:

Parcel 1, as shown on that certain Parcel Map which filed for record in the
office of the recorder of the County of Santa Clara, State of California on July
7, 1994, in Book 657 of Parcel Maps, Page 9.

APN:  110-32-6
ARB:  110-3-x65

TRACT 4:

Parcel 2, as shown on that certain Parcel Map which filed for record in the
office of the recorder of the County of Santa Clara, State of California on July
7, 1994, in Book 657 of Parcel Maps, Page 9.

APN:  110-32-7
ARB:  110-3-x65


<PAGE>   40

TRACT 5:

Parcel 2, as shown on that certain parcel Map which filed for record in the
office of the recorder of the County of Santa Clara, State of California on
October 7, 1998, in Book 708 of Parcel Maps, Pages 51 and 52.

APN:  110-32-12
ARB:  110-03-65.11

                               Exhibit A - Page 2
<PAGE>   41

                                    EXHIBIT B

                             INSURANCE REQUIREMENTS

I.      LIABILITY INSURANCE:

        A. NAI must maintain commercial general liability ("CGL") insurance on
an occurrence basis, affording immediate protection to the limit of not less
than $20,000,000 combined single limit for bodily and personal injury, death and
property damage in respect of any one occurrence. The CGL insurance must be
primary to, and shall receive no contribution from, any insurance policies or
self-insurance programs otherwise afforded to or available to the Interested
Parties, collectively or individually. Further, the CGL insurance must include
blanket contractual liability coverage which insures contractual liability under
the indemnifications set forth in this Land Lease (though such coverage or the
amount thereof shall in no way limit such indemnifications).

        B. Any deductible or self-insured retention applicable to the CGL
insurance shall not exceed $1,000 at any time when NAI shall continue to have
the right to exercise any Issue 97-10 Election under (and as defined in) the
Other Lease Agreement, or shall have previously exercised an Issue 97-10
Election. After the expiration of NAI's right to exercise any Issue 97-10
Election, and provided no Issue 97-10 Election has been exercised by NAI, NAI
may increase any deductible or self-insured retention applicable to such
insurance, but not to an amount in excess of $500,000.

        C. The forms of insurance policies (including endorsements) used to
provide the CGL insurance required by this Land Lease, and the insurance company
or companies providing the CGL insurance, must be acceptable to BNPLC. BNPLC
shall have the right from time to time and at any time to review and approve
such policy forms (including endorsements) and the insurance company or
companies providing the insurance. Without limiting the generality of the
foregoing, BNPLC may reasonably require (and unless and until NAI is otherwise
notified by BNPLC, BNPLC does require) that such insurance be provided under
forms and by companies consistent with the following:

                1.      Forms: CGL Insurance must be provided on Insurance
                        Services Office ("ISO") forms CG 0001 1093 or CG 0001
                        0196 or equivalent substitute forms providing the same
                        or greater coverage.

                2.      Rating Requirements: Insurance must be provided through
                        insurance or reinsurance companies rated by the A.M.
                        Best Company of Oldwick, New Jersey as having a
                        policyholder's rating of A or better and a reported
                        financial information rating of X or better.

                3.      Required Endorsements: CGL Insurance must be endorsed to
                        provide or include:

                        (a) in any policy containing a general aggregate limit,
                        ISO form amendment "Aggregate Limits of Insurance Per
                        Location" CG 2504 1185 or equivalent substitute form;


<PAGE>   42

                        (c) a waiver of subrogation, using ISO form CG 2404 1093
                        or equivalent substitute form (and under the commercial
                        umbrella, if any), in favor of "BNP Leasing Corporation
                        and other Interested Parties (as defined in the Common
                        Definitions and Provisions Agreement (Phase IV -- Land)
                        between Network Appliance, Inc. and BNP Leasing
                        Corporation dated October 2, 2000)";

                        (c) ISO additional insured form CG 2026 1185 or
                        equivalent substitute form, without modification (and
                        under the commercial umbrella, if any), designating as
                        additional insureds "BNPLC and other Interested Parties,
                        as defined in the Common Definitions and Provisions
                        Agreement (Phase IV -- Land) between Network Appliance,
                        Inc. and BNP Leasing Corporation dated October 2,
                        2000)"; and

                        (d) provisions entitling BNPLC to 30 days' notice from
                        the insurer prior to any cancellation, nonrenewal or
                        material modification to the CGL coverage.

                4.      Other Insurance: Each policy to contain standard CGL
                        "other insurance" wording, unmodified in any way that
                        would make it excess over or contributory with the
                        additional insured's own commercial general liability
                        coverage.

II.     INTENTIONALLY DELETED.

III.    OTHER INSURANCE RELATED REQUIREMENTS:

        A. BNPLC must be notified in writing immediately by NAI of claims
against NAI that might cause a reduction below seventy-five percent (75%) of any
aggregate limit of any policy.

        B. Intentionally Deleted.

        C. NAI's CGL insurance must be evidenced by ACORD form 25 "Certificate
of Insurance" completed and interlineated in a manner satisfactory to BNPLC to
show compliance with the requirements of this Exhibit. Copies of endorsements to
the CGL insurance must be attached to such form.

        D. Such evidence of required insurance must be delivered upon execution
of this Land Lease and new certificate or evidence of insurance must be
delivered no later than 10 days prior to expiration of existing policy.

        E. NAI shall not cancel, fail to renew, or make or permit any material
reduction in any of the policies or certificates described in this Exhibit
without the prior written consent of BNPLC. The certificates (ACORD forms 27 and
25) described in this Exhibit must contain the following express provision:

                               Exhibit B - Page 2
<PAGE>   43

        "This is to certify that the policies of insurance described herein have
        been issued to the insured Network Appliance, Inc. for whom this
        certificate is executed and are in force at this time. In the event of
        cancellation, non-renewal, or material reduction in coverage affecting
        the certificate holder, at least sixty days prior notice shall be given
        to the certificate holder."

        F. The limits of liability under the liability insurance required by
this Land Lease may be provided by a single policy of insurance or by a
combination of primary and umbrella policies, but in no event shall the total
limits of liability available for any one occurrence or accident be less than
those required by this Exhibit.

        G. NAI shall provide copies, certified as complete and correct by an
authorized agent of the applicable insurer, of all insurance policies required
by this Exhibit within ten days after receipt of a request for such copies from
BNPLC.


                               Exhibit B - Page 3
<PAGE>   44

                                   SCHEDULE 1

                               FINANCIAL COVENANTS

        This Schedule 1 is attached to and made a part of (a) the Lease
Agreement (Phase IV -- Improvements) (the "IMPROVEMENTS LEASE") dated to be
effective as of October 2, 2000 (the "EFFECTIVE DATE"), between BNP Leasing
Corporation, a Delaware corporation ("BNPLC") and Network Appliance, Inc., a
California corporation ("NAI"), (b) the Lease Agreement (Phase IV -- Land) (the
"LAND LEASE" and, together with the Improvements Lease, the "LEASES") dated to
be effective as of the Effective Date, between BNPLC and NAI, (c) the Pledge
Agreement (Phase IV -- Improvements) (the "PLEDGE AGREEMENT (IMPROVEMENTS)")
dated to be effective as of the Effective Date, among BNPLC, NAI, and BNP
Paribas, as a Participant and as agent for any financial institutions that
become Participants thereunder from time to time, and (d) the Pledge Agreement
(Phase IV -- Land) (collectively with the Pledge Agreement (Improvements), the
"PLEDGE AGREEMENTS") dated to be effective as of the Effective Date, among
BNPLC, NAI, and BNP Paribas, as a Participant and as agent for any financial
institutions that become Participants thereunder from time to time.

                            PART I -- DEFINED TERMS

        In this Schedule 1, capitalized terms used but not defined herein shall
have the meaning assigned to them in the Leases or the Common Definitions and
Provisions Agreements referenced in the Leases; and the following capitalized
terms shall have the following meanings:

        "ADJUSTED NET INCOME" means, for any fiscal period of NAI, the aggregate
        net income earned (or net losses incurred) during such period by NAI and
        its Subsidiaries (determined on a consolidated basis), plus any
        Permitted Non-Cash Charges deducted in determining such net income (or
        net loss).

        "ADJUSTED EBIT" means, for any accounting period, net income (or net
        loss) of NAI and its Subsidiaries (determined on a consolidated basis),
        plus the amounts (if any) which, in the determination of net income (or
        net loss) for such period, have been deducted for (a) interest expense,
        (b) income tax expense (c) rent expense under leases of property, and
        (d) Permitted Non-Cash Charges.

        "CONSOLIDATED TANGIBLE NET WORTH" means the excess of (1) the total
        assets, other than Intangible Assets, of NAI and its Subsidiaries
        (determined on a consolidated basis) over (2) the total liabilities of
        NAI and its Subsidiaries (determined on a consolidated basis).

        "DEBT" as used in this Exhibit shall have the meaning assigned to it in
        the Common Definitions and Provisions Agreements, where "Debt" of any
        Person is defined to mean (without duplication of any item): (a)
        indebtedness of such Person for borrowed money; (b) indebtedness of such
        Person for the deferred purchase price of property or services (except
        trade payables and accrued expenses constituting current liabilities in
        the ordinary course of business); (c) the face amount of any outstanding
        letters of credit issued for the account of such Person; (d) obligations
        of such Person arising under acceptance facilities; (e) guaranties,
        endorsements (other than for collection in the ordinary course of
        business) and other contingent obligations of such Person to purchase,

<PAGE>   45

        to provide funds for payment, to provide funds to invest in any Person,
        or otherwise to assure a creditor against loss; (f) obligations of
        others secured by any Lien on property of such Person; (g) obligations
        of such Person as lessee under Capital Leases; and (h) the obligations
        of such Person, contingent or otherwise, under any lease of property or
        related documents (including a separate purchase agreement) which
        provide that such Person or any of its Affiliates must purchase or cause
        another Person to purchase any interest in the leased property and
        thereby guarantee a minimum residual value of the leased property to the
        lessor. For purposes of this definition, the amount of the obligations
        described in clause (h) of the preceding sentence with respect to any
        lease classified according to GAAP as an "operating lease," shall equal
        the sum of (1) the present value of rentals and other minimum lease
        payments required in connection with such lease [calculated in
        accordance with SFAS 13 and other GAAP relevant to the determination of
        the whether such lease must be accounted for as an operating lease or
        capital lease], plus (2) the fair value of the property covered by the
        lease; provided, however, that such amount shall not exceed the price,
        as of the date a determination of Debt is required hereunder, for which
        the lessee can purchase the leased property pursuant to any valid
        ongoing purchase option if, upon such a purchase, the lessee shall be
        excused from paying rentals or other minimum lease payments that would
        otherwise accrue after the purchase.

        "FIXED CHARGES" means, for any accounting period, the sum (without
        duplication of any item) of the following charges or costs incurred or
        paid by NAI and its Subsidiaries (determined on a consolidated basis):
        (a) gross interest expense, plus (b) amortization of principal or debt
        discount in respect of all Debt during such period, plus (c) rent
        payable under all leases of property during such period, plus (d) taxes
        payable during such period.

        "INTANGIBLE ASSETS" means assets of NAI and its Subsidiaries (determined
        on a consolidated basis) that are properly classified as "INTANGIBLE
        ASSETS" in accordance with GAAP and, in any event, shall include
        goodwill, patents, trade names, trademarks, copyrights, franchises,
        experimental expense, organization expense, unamortized debt discount
        and expense, and deferred charges (other than prepaid insurance, prepaid
        taxes and current deferred taxes to the extent any such prepaid or
        deferred items are classified on the balance sheet of NAI and its
        consolidated Subsidiaries as current assets in accordance with GAAP and
        with the concurrence of NAI's independent public accountants).

        "PERMITTED NON-CASH CHARGES" means the amounts (if any) which, in the
        determination of net income (or net loss) for any relevant fiscal
        period, have been deducted by NAI or its Subsidiaries for non-cash
        charges made to write down goodwill or research and development costs in
        connection with acquisitions permitted by this Schedule 1.

        "QUICK RATIO" means the ratio of:

               (A) the sum (without duplication of any item) of the following
        assets of NAI and its Subsidiaries (determined on a consolidated basis):
        Collateral delivered and pledged under the Pledge Agreements in
        accordance with the requirements thereof (if any); plus unencumbered
        cash; plus unencumbered short term cash investments; plus other


                              Schedule 1 - Page 2
<PAGE>   46

        unencumbered marketable securities which are classified as short term
        investments in accordance with GAAP; plus unencumbered accounts
        receivable, computed net of reserves for uncollectible amounts as
        determined in accordance with GAAP, to

               (B) the sum (without duplication of any item) of (1) all
        liabilities of NAI and its Subsidiaries (determined on a consolidated
        basis) treated as current liabilities in accordance with GAAP, plus (2)
        other obligations included in total Debt of NAI and its Subsidiaries
        (determined on a consolidated basis), the payment of which is due on
        demand or will become due within one year after the date on which the
        applicable determination of Quick Ratio is required hereunder.

        "ROLLING FOUR QUARTER PERIOD" means a period of four consecutive fiscal
        quarters of NAI, the last of which quarters ends after December 31,
        1999.

               PART II -- FINANCIAL COVENANTS FOR LEASE AGREEMENT

NAI covenants that it shall not at any time suffer or permit:

1.      Minimum Unencumbered Cash and Cash Equivalents. The sum (without
        duplication of any item) of the unrestricted cash, Collateral delivered
        and pledged under the Pledge Agreements in accordance with the
        requirements thereof (if any), unencumbered short term cash investments
        and unencumbered marketable securities classified as short term
        investments according to GAAP of NAI and its Subsidiaries (determined on
        a consolidated basis) to be less than total Debt of NAI and its
        Subsidiaries (determined on a consolidated basis).

2.      Minimum Tangible Net Worth. Consolidated Tangible Net Worth to be less
        than the sum of: (a) ninety percent of the Consolidated Tangible Net
        Worth as of October 30, 1998; plus (b) seventy-five percent of NAI's net
        income (computed without deduction for net losses in any fiscal quarter)
        earned in each fiscal quarter since October 30, 1998; plus (c)
        one-hundred percent of the net proceeds of sales of stock in NAI or its
        Subsidiaries (other than sales to NAI or its Subsidiaries) after October
        30, 1998; less (d) Permitted Non-Cash Charges for any period after
        October 30, 1998.

3.      Minimum Quick Ratio. The Quick Ratio to be less than 1.50 to 1.00.

4.      Minimum Fixed Charge Coverage. The ratio of (a) Adjusted EBIT for any
        Rolling Four Quarter Period to (b) Fixed Charges for the same Rolling
        Four Quarter Period, to be less than 1.50 to 1.00.

5.      Minimum Profitability. Adjusted Net Income to be less than $1.00 in more
        than one fiscal quarter of any Rolling Four Quarter Period.

6.      Maximum Leverage Ratio. the ratio of (a) total Debt of NAI and its
        Subsidiaries (determined on a consolidated basis) at the end of any
        Rolling Four Quarter Period to (b) the Adjusted EBIT for the same Four
        Quarter Rolling Period, to exceed 3.00 to 1.00.


                              Schedule 1 - Page 3
<PAGE>   47

                           PART III -- OTHER COVENANTS

Without limiting NAI's obligations under the other provisions of the Operative
Documents, during the Term, NAI shall not, without the prior written consent of
BNPLC in each case:

        A. Liens. Create, incur, assume or suffer to exist, or permit any of its
Consolidated Subsidiaries to create, incur, assume or suffer to exist, any Lien,
upon or with respect to any of its properties, now owned or hereafter acquired,
provided that the following shall be permitted except to the extent that they
would encumber any interest in the Property in violation of other provisions of
the Operative Documents:

               1. Liens for taxes or assessments or other government charges or
        levies if not yet due and payable or if they are being contested in good
        faith by appropriate proceedings and for which appropriate reserves are
        maintained;

               2. Liens imposed by law, such as mechanic's, materialmen's,
        landlord's, warehousemen's and carrier's Liens, and other similar Liens,
        securing obligations incurred in the ordinary course of business which
        are not past due for more than thirty (30) days, or which are being
        contested in good faith by appropriate proceedings and for which
        appropriate reserves have been established;

               3. Liens under workmen's compensation, unemployment insurance,
        social security or similar laws (other than ERISA);

               4. Liens, deposits or pledges to secure the performance of bids,
        tenders, contracts (other than contracts for the payment of money),
        leases, public or statutory obligations, surety, stay, appeal,
        indemnity, performance or other similar bonds, or other similar
        obligations arising in the ordinary course of business;

               5. judgment and other similar Liens against assets other than the
        Property or any part thereof in an aggregate amount not in excess of
        $3,000,000 arising in connection with court proceedings; provided that
        the execution or other enforcement of such Liens is effectively stayed
        and the claims secured thereby are being actively contested in good
        faith by appropriate proceedings;

               6. easements, rights-of-way, restrictions and other similar
        encumbrances which, in the aggregate, do not materially interfere with
        the occupation, use and enjoyment by NAI or any such Consolidated
        Subsidiary of the property or assets encumbered thereby in the normal
        course of its business or materially impair the value of the property
        subject thereto;

               7. Liens securing obligations of such a Consolidated Subsidiary
        to NAI or to another such Consolidated Subsidiary;

               8. Liens not otherwise permitted by this subparagraph A (and not
        encumbering the Property or any Collateral) incurred in connection with
        the incurrence of additional Debt or asserted to secure Unfunded Benefit
        Liabilities, provided that (a) the sum of the aggregate principal amount
        of all outstanding obligations secured by Liens

                              Schedule 1 - Page 4

<PAGE>   48

        incurred pursuant to this clause shall not at any time exceed five
        percent (5%) of Consolidated Tangible Net Worth at such time; and (b)
        such Liens do not constitute Liens against NAI's interest in any
        material Subsidiary or blanket Liens against all or substantially all of
        the inventory, receivables, general intangibles or equipment of NAI or
        of any material Subsidiary of NAI (for purposes of this clause, a
        "material Subsidiary" means any subsidiary whose assets represent a
        substantial part of the total assets of NAI and its Subsidiaries,
        determined on a consolidated basis in accordance with GAAP); and

               9. Liens incurred in connection with any renewals, extensions or
        refundings of any Debt secured by Liens described in the preceding
        clauses of this subparagraph A, provided that there is no increase in
        the aggregate principal amount of Debt secured thereby from that which
        was outstanding as of the date of such renewal, extension or refunding
        and no additional property is encumbered.

        B. Transactions with Affiliates. Enter into or permit any Subsidiary of
NAI to enter into any material transactions (including, without limitation, the
purchase, sale or exchange of property or the rendering of any service) with any
Affiliates of NAI except on terms (1) that would not cause or result in a
Default by NAI under the financial covenants set forth in Part II of this
Schedule, and (2) that are no less favorable to NAI or the relevant Subsidiary
than those that would have been obtained in a comparable transaction on an arm's
length basis from an unrelated Person.

        C. Compliance. Fail to preserve and maintain all licenses, permits,
governmental approvals, rights, privileges and franchises necessary for the
conduct of its business; or fail to comply with the provisions of all documents
pursuant to which NAI is organized and/or which govern NAI's continued existence
and with the requirements of all laws, rules, regulations and orders of a
governmental agency applicable to NAI and/or its business.

        D. Insurance. Fail to maintain and keep in force insurance of the types
and in amounts customarily carried in lines of business similar to that of NAI,
including but not limited to fire, extended coverage, public liability, flood,
property damage and workers' compensation, with all such insurance carried with
companies and in amounts satisfactory to BNPLC, or fail to deliver to BNPLC from
time to time at BNPLC's request schedules setting forth all insurance then in
effect.

        E. Facilities. fail to keep all properties useful or necessary to NAI's
business in good repair and condition, or to from time to time make necessary
repairs, renewals and replacements thereto so that such properties shall be
fully and efficiently preserved and maintained.

        F. Taxes and Other Liabilities. Fail to pay and discharge when due any
and all indebtedness, obligations, assessments and taxes, both real or personal,
including without limitation federal and state income taxes and state and local
property taxes and assessments, except (a) such as NAI may in good faith contest
or as to which a bona fide dispute may arise, and (b) for which NAI has made
provisions, to BNPLC's satisfaction, for eventual payment thereof in the event
that NAI is obligated to make such payment.

                              Schedule 1 - Page 5
<PAGE>   49

        G. Capital Expenditures. Make any additional investment in fixed assets
in any fiscal year in excess of an aggregate of twenty percent (20%) of NAI's
total assets as of the end of the prior fiscal year.

        H. Merger, Consolidation, Transfer of Assets. Merge into or consolidate
with any other entity (unless NAI is the surviving entity and remains in
compliance of all provisions of the Operative Documents); or make any
substantial change in the nature of NAI's business as conducted as of the date
hereof; or sell, lease, transfer or otherwise dispose of all or a substantial or
material portion of NAI's assets except in the ordinary course of its business.

        I. Loans, Advances, Investments. Make any loans or advances to or
investments in any person or entity, except (a) any of the foregoing existing as
of, and disclosed to BNPLC prior to, the date hereof, (b) loans to employees for
travel advances, relocation loans and other loans in the ordinary course of
business, (c) investments in accordance with NAI's investment policy, as in
effect from time to time, (d) existing investments in subsidiaries and joint
ventures which have been disclosed to BNPLC in writing prior to the date hereof,
and new investments in subsidiaries and joint ventures in amounts up to an
aggregated of $10,000,000.00, (e) loans to employees, officers, directors to
finance or refinance the purchase of equity securities of NAI.

        J. Dividends, Distributions. Declare or pay any dividend or distribution
either in cash, stock or any other property on NAI's stock now or hereafter
outstanding, nor redeem, retire, repurchase or otherwise acquire any shares of
any class of NAI's stock now or hereafter outstanding.


                              Schedule 1 - Page 6

<PAGE>   50

                   COMMON DEFINITIONS AND PROVISIONS AGREEMENT
                                (PHASE IV -- LAND)








                                     BETWEEN








                             BNP LEASING CORPORATION





                                       AND





                             NETWORK APPLIANCE, INC.








                           DATED AS OF OCTOBER 2, 2000




<PAGE>   51

<TABLE>
<CAPTION>

                                TABLE OF CONTENTS
                                                                                          Page

<S>                                                                                       <C>
ARTICLE I -- LIST OF DEFINED TERMS...........................................................1
        Active Negligence....................................................................1
        Additional Rent......................................................................2
        Adjusted EBIT........................................................................2
        Advance Date.........................................................................2
        Affiliate............................................................................2
        Applicable Laws......................................................................2
        Applicable Purchaser.................................................................2
        Attorneys' Fees......................................................................2
        Banking Rules Change.................................................................2
        Base Rate............................................................................3
        Base Rent............................................................................3
        Base Rent (Building 6 Land)..........................................................3
        Base Rent (Building 7 Land)..........................................................3
        Base Rent (Building 8 Land)..........................................................3
        Base Rent (Existing Buildings Land)..................................................3
        Base Rent Commencement Date (All Buildings)..........................................3
        Base Rent Commencement Date (Building 6).............................................3
        Base Rent Commencement Date (Building 7).............................................3
        Base Rent Commencement Date (Building 8).............................................3
        Base Rent Commencement Deadline......................................................3
        Base Rent Date.......................................................................4
        Base Rent Period.....................................................................4
        BNPLC................................................................................4
        BNPLC's Parent.......................................................................4
        Breakage Costs.......................................................................4
        Break Even Price.....................................................................4
        Building 6...........................................................................4
        Building 6 Land Percentage...........................................................4
        Building 7...........................................................................4
        Building 7 Land Percentage...........................................................5
        Building 8...........................................................................5
        Building 8 Land Percentage...........................................................5
        Business Day.........................................................................5
        Capital Adequacy Charges.............................................................5
        Capital Lease........................................................................5
        Closing Certificate..................................................................5
        Code.................................................................................5
        Collateral...........................................................................5
        Collateral Percentage................................................................5
        Common Definitions and Provisions Agreement (Phase IV -- Land).......................5
        Completion Notice (Building 6).......................................................5
        Completion Notice (Building 7).......................................................5
</TABLE>


                                       i
<PAGE>   52

<TABLE>
<CAPTION>


        <S>                                                                                  <C>
        Completion Notice (Building 8).......................................................6
        Completion Notice (Final)............................................................6
        Construction Management Agreement....................................................6
        Construction Project.................................................................6
        Current AS IS Market Value...........................................................6
        Debt.................................................................................7
        Default..............................................................................7
        Default Rate.........................................................................7
        Defaulting Participant...............................................................8
        Deposit Taker........................................................................8
        Deposit Taker Losses.................................................................8
        Designated Sale Date.................................................................8
        Development Documents................................................................8
        Direct Payments to Participants......................................................9
        Effective Date.......................................................................9
        Effective Rate.......................................................................9
        Environmental Laws...................................................................9
        Environmental Cutoff Date............................................................9
        Environmental Losses.................................................................9
        Environmental Reports...............................................................10
        ERISA...............................................................................10
        ERISA Affiliate.....................................................................10
        Escrowed Proceeds...................................................................10
        Established Misconduct..............................................................11
        Eurocurrency Liabilities............................................................11
        Eurodollar Rate Reserve Percentage..................................................11
        Event of Default....................................................................11
        Excluded Deposit Taker Losses.......................................................11
        Excluded Taxes......................................................................12
        Existing Buildings..................................................................12
        Existing Buildings Land Percentage..................................................12
        Existing Contract...................................................................12
        Fed Funds Rate......................................................................12
        GAAP................................................................................12
        Hazardous Substance.................................................................12
        Hazardous Substance Activity........................................................13
        Impositions.........................................................................13
        Improvements........................................................................13
        Interested Party....................................................................13
        Issue 97-1 Non-performance-related Subjective Event of Default......................14
        Land................................................................................14
        Land Lease..........................................................................14
        LIBOR...............................................................................14
        Lien................................................................................15
        Liens Removable by BNPLC............................................................15
        Losses .............................................................................16
</TABLE>

                                       ii
<PAGE>   53

<TABLE>
<CAPTION>

        <S>                                                                                 <C>
        Material Environmental Communication................................................16
        Maximum Remarketing Obligation......................................................16
        Minimum Extended Remarketing Price..................................................16
        Multiemployer Plan..................................................................16
        NAI.................................................................................16
        NAI's Extended Remarketing Period...................................................16
        NAI's Extended Remarketing Right....................................................16
        NAI's Initial Remarketing Rights and Obligations....................................16
        Operative Documents.................................................................16
        Other Common Definitions and Provisions Agreement...................................16
        Other Lease Agreement...............................................................17
        Other Purchase Agreement............................................................17
        Participant.........................................................................17
        Participation Agreement.............................................................17
        PBGC................................................................................17
        Permitted Encumbrances..............................................................17
        Permitted Hazardous Substance Use...................................................17
        Permitted Hazardous Substances......................................................18
        Permitted Transfer..................................................................18
        Person .............................................................................19
        Personal Property...................................................................19
        Plan................................................................................19
        Pledge Agreement....................................................................19
        Premises Lease......................................................................19
        Prime Rate..........................................................................19
        Prior Funding Advances..............................................................19
        Property............................................................................20
        Purchase Agreement..................................................................20
        Purchase Documents..................................................................20
        Purchase Option.....................................................................20
        Qualified Affiliate.................................................................20
        Qualified Prepayments...............................................................20
        Qualifying Security Interest........................................................21
        Real Property.......................................................................21
        Remedial Work.......................................................................21
        Rent................................................................................21
        Residual Risk Percentage............................................................21
        Responsible Financial Officer.......................................................21
        Sale Closing Documents..............................................................21
        Secured Spread......................................................................21
        Seller .............................................................................21
        Stipulated Loss Value...............................................................21
        Subsidiary..........................................................................21
        Supplemental Payment................................................................21
        Term................................................................................21
        Third Party Price...................................................................22
</TABLE>

                                      iii
<PAGE>   54

<TABLE>
<CAPTION>

<S>     <C>                                                                                <C>
        Third Party Sale Notice.............................................................22
        Third Party Sale Proposal...........................................................22
        Third Party Target Price............................................................22
        Transaction Expenses................................................................22
        Unfunded Benefit Liabilities........................................................22
        Voluntary Retention of the Property.................................................22

ARTICLE II -- RULES OF INTERPRETATION.......................................................23
        1.      NOTICES.....................................................................23
        2.      SEVERABILITY................................................................24
        3.      NO MERGER...................................................................24
        4.      NO IMPLIED WAIVER...........................................................25
        5.      ENTIRE AND ONLY AGREEMENTS..................................................25
        6.      BINDING EFFECT..............................................................25
        7.      TIME IS OF THE ESSENCE......................................................25
        8.      GOVERNING LAW...............................................................25
        9.      PARAGRAPH HEADINGS..........................................................25
        10.     NEGOTIATED DOCUMENTS........................................................26
        11.     TERMS NOT EXPRESSLY DEFINED IN AN OPERATIVE DOCUMENT........................26
        12.     OTHER TERMS AND REFERENCES..................................................26
        13.     EXECUTION IN COUNTERPARTS...................................................26
        14.     NOT A PARTNERSHIP, ETC......................................................27
        15.     AMENDMENT AND RESTATEMENT...................................................27
</TABLE>

                                       iv

<PAGE>   55


                   COMMON DEFINITIONS AND PROVISIONS AGREEMENT
                                (PHASE IV -- LAND)

        This Common Definitions and Provisions Agreement (Phase IV -- Land), by
and between BNP LEASING CORPORATION, a Delaware corporation ("BNPLC"), and
NETWORK APPLIANCE, INC., a California corporation ("NAI"), is dated as of
October 2, 2000, the Effective Date.

                                    RECITALS

        Contemporaneously with the execution of this Common Definitions and
Provisions Agreement (Phase IV -- Improvements), NAI is executing the Closing
Certificate (as defined below) in favor of BNPLC, and BNPLC and NAI are
executing the Land Lease (as defined below) and the Purchase Agreement (as
defined below), both of which concern the Property (as defined below). Each of
the Closing Certificate, the Land Lease and the Purchase Agreement (together
with this Common Definitions and Provisions Agreement (Phase IV -- Land) and the
Pledge Agreement [as defined below], the "OPERATIVE DOCUMENTS") are intended to
create separate and independent obligations upon the parties thereto. However,
NAI and BNPLC intend that all of the Operative Documents share certain
consistent definitions and other miscellaneous provisions. To that end, the
parties are executing this Common Definitions and Provisions Agreement (Phase IV
-- Land) and incorporating it by reference into each of the other Operative
Documents.

        NAI and BNPLC previously executed that Common Definitions and Provisions
Agreement (Phase IV -Land) dated December 20, 1999 (the "Prior Common
Definitions and Provisions Agreement"). NAI and BNPLC have agreed to amend,
restate and replace the Prior Common Definitions and Provisions Agreement with
this Common Definitions and Provisions Agreement (Phase IV -- Land) as provided
in Paragraph 15 of Article II below.

                                   AGREEMENTS

                        ARTICLE I -- LIST OF DEFINED TERMS

        UNLESS A CLEAR CONTRARY INTENTION APPEARS, THE FOLLOWING TERMS SHALL
HAVE THE RESPECTIVE INDICATED MEANINGS AS USED HEREIN AND IN THE OTHER OPERATIVE
DOCUMENTS:

        "ACTIVE NEGLIGENCE" of any Person (including BNPLC) means, and is
limited to, the negligent conduct on the Property (and not mere omissions) by
such Person or by others acting and authorized to act on such Person's behalf in
a manner that proximately causes actual bodily injury or property damage for
which NAI does not carry (and is not obligated by the Land Lease to carry)
insurance. "ACTIVE NEGLIGENCE" shall not include (1) any negligent failure of
BNPLC to act when the duty to act would not have been imposed but for BNPLC's
status as owner of the Land, the Improvements or any interest in any other
Property or as a party to the transactions described in the Land Lease or the
other Operative Documents or in the Other Lease Agreement or the Other Purchase
Agreement, (2) any negligent failure of any other Interested Party to act when
the duty to act would not have been imposed but for such party's contractual or
other relationship to BNPLC or participation or facilitation in any manner,
directly or indirectly, of the

<PAGE>   56

transactions described in the Land Lease or other Operative Documents or in the
Other Lease Agreement or Other Purchase Agreement, or (3) the exercise in a
lawful manner by BNPLC (or any party lawfully claiming through or under BNPLC)
of any right or remedy provided in or under the Land Lease or the other
Operative Documents or in the Other Lease Agreement or Other Purchase Agreement.

        "ADDITIONAL RENT" shall have the meaning assigned to it in subparagraph
3.(d) of the Land Lease.

        "ADJUSTED EBIT" shall have the meaning assigned to it in Part I of
Schedule 1 attached to the Land Lease and to the Pledge Agreement.

        "ADVANCE DATE" means the first Business Day of every calendar month,
beginning with the first Business Day of the first calendar month after the
Effective Date and continuing regularly thereafter to and including the Base
Rent Commencement Date (All Buildings).

        "AFFILIATE" of any Person means any other Person controlling, controlled
by or under common control with such Person. For purposes of this definition,
the term "control" when used with respect to any Person means the power to
direct the management of policies of such Person, directly or indirectly,
whether through the ownership of voting securities, by contract or otherwise,
and the terms "controlling" and "controlled" have meanings correlative to the
foregoing.

        "APPLICABLE LAWS" means any or all of the following, to the extent
applicable to NAI or the Property or the Land Lease or the other Operative
Documents: restrictive covenants; zoning ordinances and building codes; flood
disaster laws; health, safety and environmental laws and regulations; the
Americans with Disabilities Act and other laws pertaining to disabled persons;
and other laws, statutes, ordinances, rules, permits, regulations, orders,
determinations and court decisions.

        "APPLICABLE PURCHASER" means any third party designated by NAI to
purchase BNPLC's interest in the Property and in any Escrowed Proceeds as
provided in the Purchase Agreement.

        "ATTORNEYS' FEES" means the expenses and reasonable fees of counsel to
the parties incurring the same, excluding costs or expenses of in-house counsel
(whether or not accounted for as general overhead or administrative expenses),
but otherwise including printing, photostating, duplicating and other expenses,
air freight charges, and fees billed for law clerks, paralegals, librarians and
others not admitted to the bar but performing services under the supervision of
an attorney. Such terms shall also include all such fees and expenses incurred
with respect to appeals, arbitrations and bankruptcy proceedings, and whether or
not any manner of proceeding is brought with respect to the matter for which
such fees and expenses were incurred.

        "BANKING RULES CHANGE" means either: (1) the introduction of or any
change in any law or regulation applicable to BNPLC, BNPLC's Parent or any other
Participant, or in the generally accepted interpretation by the institutional
lending community of any such law or regulation, or in the interpretation of any
such law or regulation asserted by any regulator, court or other governmental
authority (other than any change by way of imposition or increase of reserve
requirements included in the Eurodollar Rate Reserve Percentage) or (2) the
compliance by

     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 2

<PAGE>   57

BNPLC, BNPLC's Parent or any other Participant with any new guideline or new
request from any central bank or other governmental authority (whether or not
having the force of law).

        "BASE RATE" for any Base Rent Period means a rate equal to the higher of
(1) the Prime Rate in effect on the first day of such period, or (2) the rate
which is fifty basis points (50/100 of 1%) above the Fed Funds Rate for that
period.

        "BASE RENT" means the rent payable by NAI pursuant to subparagraph 3.(a)
of the Land Lease.

        "BASE RENT (BUILDING 6 LAND)" means a component of Base Rent calculated
as described in subparagraph 3.(c) of the Land Lease.

        "BASE RENT (BUILDING 7 LAND)" means a component of Base Rent calculated
as described in subparagraph 3.(c) of the Land Lease.

        "BASE RENT (BUILDING 8 LAND)" means a component of Base Rent calculated
as described in subparagraph 3.(c) of the Land Lease.

        "BASE RENT (EXISTING BUILDINGS LAND)" means a component of Base Rent
calculated as described in subparagraph 3.(c) of the Land Lease.

        "BASE RENT COMMENCEMENT DATE (ALL BUILDINGS)" means the later of (1) the
Base Rent Commencement Date (Building 6), (2) the Base Rent Commencement Date
(Building 7), or (3) the Base Rent Commencement Date (Building 8). If, contrary
to the expectations of BNPLC and NAI as of the Effective Date, the Base Rent
Commencement Date (Building 6), the Base Rent Commencement Date (Building 7),
and the Base Rent Commencement Date (Building 8) all occur on the same day, that
day shall constitute the Base Rent Commencement Date (All Buildings).

        "BASE RENT COMMENCEMENT DATE (BUILDING 6)" means the earlier of (A) the
first Business Day of the first calendar month to follow by twenty days or more
the day upon which any Completion Notice (Building 6) or Completion Notice
(Final) is given, or (B) the Base Rent Commencement Deadline.

        "BASE RENT COMMENCEMENT DATE (BUILDING 7)" means the earlier of (A) the
first Business Day of the first calendar month to follow by twenty days or more
the day upon which any Completion Notice (Building 7) or Completion Notice
(Final) is given, or (B) the Base Rent Commencement Deadline.

        "BASE RENT COMMENCEMENT DATE (BUILDING 8)" means the earlier of (A) the
first Business Day of the first calendar month to follow by twenty days or more
the day upon which any Completion Notice (Building 8) or Completion Notice
(Final) is given, or (B) the Base Rent Commencement Deadline.

        "BASE RENT COMMENCEMENT DEADLINE" shall have the meaning assigned to it
in the Other Common Definitions and Provisions Agreement.

     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 3

<PAGE>   58

        "BASE RENT DATE" means October 16, 2000 and the first Business Day of
every calendar month thereafter.

        "BASE RENT PERIOD" means a period for which Base Rent must be paid under
the Land Lease. The first Base Rent Period shall begin on and include the
Effective Date and end on but not include the first Base Rent Date. Each
successive Base Rent Period shall begin on and include the Base Rent Date upon
which the preceding Base Rent Period ends and shall end on but not include the
next following Base Rent Date (i.e., the first Business Day of the next calendar
month).

        "BNPLC" means BNP Leasing Corporation, a Delaware corporation.

        "BNPLC'S PARENT" means BNPLC's Affiliate, BNP Paribas, a bank organized
and existing under the laws of France and any successors of such bank.

        "BREAKAGE COSTS" means any and all costs, losses or expenses incurred or
sustained by BNPLC's Parent (as a Participant or otherwise) or any other
Participant, for which BNPLC's Parent or the Participant shall request
reimbursement from BNPLC, because of the resulting liquidation or redeployment
of deposits or other funds:

               (1) used to make or maintain Prior Funding Advances upon
        application of a Qualified Prepayment or upon any sale of the Property
        pursuant to the Purchase Agreement, if such application or sale occurs
        on any day other than an Advance Date or the last day of a Base Rent
        Period; or

               (2) used to make or maintain Prior Funding Advances upon the
        acceleration of the end of any Base Rent Period pursuant subparagraph
        3.(c)(iii) of the Land Lease.

Breakage Costs will include, for example, losses attributable to any decline in
LIBOR as of the effective date of any application described in the clause (1)
preceding, as compared to LIBOR used to determine the Effective Rate then in
effect. Each determination by BNPLC's Parent or the applicable Participant of
Breakage Costs shall, in the absence of clear and demonstrable error, be
conclusive and binding upon NAI.

        "BREAK EVEN PRICE" shall have the meaning assigned to it in subparagraph
1(B)(1) of the Purchase Agreement.

        "BUILDING 6" means the building described as Building 6 in Exhibit B to
the Construction Management Agreement, which is to be constructed as part of the
Improvements as provided therein.

        "BUILDING 6 LAND PERCENTAGE" means twenty percent (20%), which is the
percentage of the Land that NAI has determined will primarily serve Building 6
after construction contemplated in the Construction Management Agreement is
complete.

        "BUILDING 7" means the building described as Building 7 in Exhibit B to
the Construction Management Agreement, which is to be constructed as part of the
Improvements as provided therein.

     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 4

<PAGE>   59


        "BUILDING 7 LAND PERCENTAGE" means twenty percent (20%), which is the
percentage of the Land that NAI has determined will primarily serve Building 7
after construction contemplated in the Construction Management Agreement is
complete.

        "BUILDING 8" means the building described as Building 8 in Exhibit B to
the Construction Management Agreement, which is to be constructed as part of the
Improvements as provided therein.

        "BUILDING 8 LAND PERCENTAGE" means twenty percent (20%), which is the
percentage of the Land that NAI has determined will primarily serve Building 8
after construction contemplated in the Construction Management Agreement is
complete.

        "BUSINESS DAY" means any day that is (1) not a Saturday, Sunday or day
on which commercial banks are generally closed or required to be closed in New
York City, New York or San Francisco, California, and (2) a day on which
dealings in deposits of dollars are transacted in the London interbank market;
provided that if such dealings are suspended indefinitely for any reason,
"Business Day" shall mean any day described in clause (1).

        "CAPITAL ADEQUACY CHARGES" means any additional amounts BNPLC's Parent
or any other Participant requests BNPLC to pay as compensation for an increase
in required capital as provided in subparagraph 5.(b)(ii) of the Land Lease.

        "CAPITAL LEASE" means any lease which has been or should be capitalized
on the books of the lessee in accordance with GAAP or for federal income tax
purposes.

        "CLOSING CERTIFICATE" means the Closing Certificate and Agreement dated
as of October 2, 2000 executed by NAI in favor of BNPLC, as such Closing
Certificate may be extended, supplemented, amended, restated or otherwise
modified from time to time in accordance with its terms.

        "CODE" means the Internal Revenue Code of 1986, as amended.

        "COLLATERAL" shall have the meaning assigned to it in the Pledge
Agreement.

        "COLLATERAL PERCENTAGE" for each Base Rent Period means one hundred
percent (100%).

        "COMMON DEFINITIONS AND PROVISIONS AGREEMENT (PHASE IV -- LAND)" means
this Agreement, which is incorporated by reference into each of the other
Operative Documents.

        "COMPLETION NOTICE (BUILDING 6)" means a notice given by NAI to BNPLC as
described in subparagraph 1(B) of the Construction Management Agreement,
advising BNPLC when the construction of the portion of the Improvements
designated by NAI as "Building 6" are substantially complete and ready for
occupancy by NAI.

        "COMPLETION NOTICE (BUILDING 7)" means a notice given by NAI to BNPLC as
described in subparagraph 1(B) of the Construction Management Agreement,
advising BNPLC when the construction of the portion of the Improvements
designated by NAI as "Building 7" are substantially complete and ready for
occupancy by NAI.

     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 5

<PAGE>   60


        "COMPLETION NOTICE (BUILDING 8)" means a notice given by NAI to BNPLC as
described in subparagraph 1(B) of the Construction Management Agreement,
advising BNPLC when the construction of the portion of the Improvements
designated by NAI as "Building 8" are substantially complete and ready for
occupancy by NAI.

        "COMPLETION NOTICE (FINAL)" means (1) a notice required by subparagraph
1(B) of the Construction Management Agreement from NAI to BNPLC, advising BNPLC
when construction of the Construction Project is substantially complete, or (2)
a notice permitted by subparagraph 6.(g) of the Improvements Lease from BNPLC to
NAI, advising NAI after any Landlord's Election to Complete Construction when
construction of the Construction Project is substantially complete or that BNPLC
no longer intends to continue such construction.

        "CONSTRUCTION MANAGEMENT AGREEMENT" means the Construction Management
Agreement dated as of October 2, 2000 between BNPLC and NAI, as such Management
Agreement may be extended, supplemented, amended, restated or otherwise modified
from time to time in accordance with its terms.

        "CONSTRUCTION PROJECT" means the new buildings or other substantial
Improvements to be constructed, or the alteration of existing Improvements, as
described generally in Exhibit B attached to the Construction Management
Agreement.

        "CURRENT AS IS MARKET VALUE" means an amount equal to the fair market
value of BNPLC's interest in the Property (or any applicable portion thereof),
AS IS, WHERE IS AND WITH ALL FAULTS on the date in question. Whenever a
determination of Current AS IS Market Value is required by the express terms of
any Operative Document, it will be determined accordance with the following
procedure unless BNPLC and NAI have otherwise agreed in writing upon a Current
AS IS Market Value at that time:

(A)     BNPLC and NAI shall each, within ten days after written notice from
        either to the other, select an appraiser. If either BNPLC or NAI fails
        to select an appraiser within the required period, then the appraiser
        who has been timely selected shall conclusively determine the fair
        market value of the Property (or applicable portion thereof) in
        accordance with this definition within forty-five days after his or her
        selection.

(B)     Upon the selection of the two appraisers as provided above, such
        appraisers shall proceed to determine the fair market value of BNPLC's
        interest in the Property (or applicable portion thereof) in accordance
        with this clause (v). Such appraisals shall be submitted in writing no
        later than forty-five days after selection of the second appraiser. If
        the fair market value as determined by such appraisers is identical,
        such sum shall be Current AS IS Market Value. If the fair market value
        indicated by the lower appraisal differs from the fair market value
        indicated by the higher appraisal by less than five percent (5%) of the
        fair market value indicated by the higher appraisal, then Current AS IS
        Market Value shall be the sum of the two appraisal figures divided by
        two (2). If either appraiser fails to timely submit his or her
        appraisal, the timely submitted appraisal shall be determinative of
        Current AS IS Market Value.

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<PAGE>   61


(C)     If the fair market value indicated by the lower appraisal differs from
        the fair market value indicated by the higher appraisal by more than
        five percent (5%) of the fair market value indicated by the higher
        appraisal, then the two appraisers previously selected shall select a
        third appraiser. The name of such appraiser shall be submitted at the
        same time the written appraisals are due. Such third appraiser shall
        then review the previously submitted appraisals and select the one that,
        in his professional opinion, more closely reflects the fair market value
        of BNPLC's interest in the Property (or applicable portion thereof),
        such selection to be submitted in writing no later than ten days after
        selection of the third appraiser. Such selection shall be determinative
        of Current AS IS Market Value.

(D)     In making any such determination of fair market value, the appraisers
        shall assume that any improvements then located on the Property (or
        applicable portion thereof) or under construction thereon constitute the
        highest and best use, and that neither the Land Lease nor the Purchase
        Agreement add any value to the Property. Each appraiser selected
        hereunder shall be an independent MAI-designated appraiser with not less
        than ten years' experience in commercial real estate appraisal in
        Sunnyvale, California and surrounding areas.

        "DEBT" of any Person means (without duplication of any item): (a)
indebtedness of such Person for borrowed money; (b) indebtedness of such Person
for the deferred purchase price of property or services (except trade payables
and accrued expenses constituting current liabilities in the ordinary course of
business); (c) the face amount of any outstanding letters of credit issued for
the account of such Person; (d) obligations of such Person arising under
acceptance facilities; (e) guaranties, endorsements (other than for collection
in the ordinary course of business) and other contingent obligations of such
Person to purchase, to provide funds for payment, to provide funds to invest in
any Person, or otherwise to assure a creditor against loss; (f) obligations of
others secured by any Lien on property of such Person; (g) obligations of such
Person as lessee under Capital Leases; and (h) the obligations of such Person,
contingent or otherwise, under any lease of property or related documents
(including a separate purchase agreement) which provide that such Person or any
of its Affiliates must purchase or cause another Person to purchase any interest
in the leased property and thereby guarantee a minimum residual value of the
leased property to the lessor. For purposes of this definition, the amount of
the obligations described in clause (h) of the preceding sentence with respect
to any lease classified according to GAAP as an "operating lease," shall equal
the sum of (1) the present value of rentals and other minimum lease payments
required in connection with such lease [calculated in accordance with SFAS 13
and other GAAP relevant to the determination of the whether such lease must be
accounted for as an operating lease or capital lease], plus (2) the fair value
of the property covered by the lease; provided, however, that such amount shall
not exceed the price, as of the date a determination of Debt is required
hereunder, for which the lessee can purchase the leased property pursuant to any
valid ongoing purchase option if, upon such a purchase, the lessee shall be
excused from paying rentals or other minimum lease payments that would otherwise
accrue after the purchase.

        "DEFAULT" means any event which, with the passage of time or the giving
of notice or both, would (if not cured within any applicable cure period)
constitute an Event of Default.

        "DEFAULT RATE" means, for any period prior to the Designated Sale Date,
a floating per annum rate equal to two percent (2%) above the Prime Rate, and
for any period commencing on

     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 7

<PAGE>   62

or after the Designated Sale Date, Default Rate shall mean a floating per annum
rate equal to five percent (5%) above the Prime Rate. However, in no event will
the "Default Rate" at any time exceed the maximum interest rate permitted by
law.

        "DEFAULTING PARTICIPANT"shall have the meaning assigned to it in Section
1 of the Participation Agreement.

        "DEPOSIT TAKER" shall have the meaning assigned to it in the Pledge
Agreement.

        "DEPOSIT TAKER LOSSES" shall have the meaning assigned to it in the
Pledge Agreement.

        "DESIGNATED SALE DATE" means the earlier of:

               (1) the first Business Day of November, 2007; or

               (2) any Business Day designated as such in an irrevocable,
        unconditional notice given by NAI to BNPLC; provided, that to be
        effective for purposes of this definition, any such notice from NAI to
        BNPLC must designate a Business Day that is more than thirty days after
        the date of such notice; and provided, further, to be effective for
        purposes of this definition, the notice must include an express,
        unconditional, unequivocal and irrevocable acknowledgment by NAI that
        because of NAI's election to accelerate the Designated Sale Date, the
        Maximum Remarketing Obligation will equal the Break Even Price under the
        Purchase Agreement; or

               (3) any Business Day designated as such in a notice given by
        BNPLC to NAI after the effective date of any termination of the
        Construction Management Agreement as provided in subparagraphs 5(D) or
        5(E) thereof; provided, that to be effective for purposes of this
        definition, any such notice given by BNPLC pursuant to this clause (3)
        must designate a Business Day that is more than thirty days after the
        date of such notice; or

               (4) any Business Day designated as such in a notice given by
        BNPLC to NAI that constitutes, or follows, a "Designated Sale Date"
        under and as defined in the Other Common Definitions and Provisions
        Agreement; or

               (5) any Business Day designated as such in a notice given by
        BNPLC to NAI when any Event of Default has occurred and is continuing;
        provided, that to be effective for purposes of this definition, any such
        notice given by BNPLC pursuant to this clause (5) must designate a
        Business Day that is more than thirty days after the date of such
        notice.

        "DEVELOPMENT DOCUMENTS" means the contracts, ordinances and other
documents described in Exhibit C attached to the Closing Certificate, as the
same may be modified from time to time in accordance with the Land Lease and the
Closing Certificate, and any applications, permits or certificates concerning or
affecting the use or development of the Property that may be submitted, issued
or executed from time to time as contemplated in such contracts, ordinances and
other documents or that BNPLC may hereafter execute, approve or consent to at
the request of NAI.

     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 8

<PAGE>   63


        "DIRECT PAYMENTS TO PARTICIPANTS" means the amounts paid or required to
be paid directly to Participants on the Designated Sale Date as provided in
Section 6.2 of the Pledge Agreement at the direction of and for NAI by the
collateral agent appointed pursuant to the Pledge Agreement from all or any part
of the Collateral described therein.

        "EFFECTIVE DATE" means October 2, 2000.

        "EFFECTIVE RATE" means for each Base Rent Period, the per annum rate
determined by dividing (A) LIBOR for such Base Rent Period, as the case may be,
by (B) one hundred percent (100%) minus the Eurodollar Rate Reserve Percentage
for such Base Rent Period. If LIBOR or the Eurodollar Rate Reserve Percentage
changes from Base Rent Period to Base Rent Period, then the Effective Rate shall
be automatically increased or decreased as of the date of such change, as the
case may be, without prior notice to NAI. If for any reason BNPLC determines
that it is impossible or unreasonably difficult to determine the Effective Rate
with respect to a given Base Rent Period in accordance with the foregoing, then
the "EFFECTIVE RATE" for that Base Rent Period shall equal any published index
or per annum interest rate determined in good faith by BNPLC's Parent to be
comparable to LIBOR at the beginning of the first day of that period. A
comparable interest rate might be, for example, the then existing yield on short
term United States Treasury obligations (as compiled by and published in the
then most recently published United States Federal Reserve Statistical Release
H.15(519) or its successor publication), plus or minus a fixed adjustment based
on BNPLC's Parent's comparison of past eurodollar market rates to past yields on
such Treasury obligations.

        Notwithstanding the foregoing, for the first short Base Rent Period
beginning on the Effective Date and ending on October 16, 2000, the Effective
Rate shall be the rate determined by BNPLC to equal its average internal daily
cost of funds (expressed as a rate) over such period.

        Any determination by BNPLC of the Effective Rate under this definition
shall, in the absence of clear and demonstrable error, be conclusive and binding
upon NAI.

        "ENVIRONMENTAL LAWS" means any and all existing and future Applicable
Laws pertaining to safety, health or the environment, or to Hazardous Substances
or Hazardous Substance Activities, including the Comprehensive Environmental
Response, Compensation, and Liability Act of 1980, as amended by the Superfund
Amendments and Reauthorization Act of 1986 (as amended, "CERCLA"), and the
Resource Conservation and Recovery Act of 1976, as amended by the Used Oil
Recycling Act of 1980, the Solid Waste Disposal Act Amendments of 1980, and the
Hazardous and Solid Waste Amendments of 1984 (as amended, "RCRA").

        "ENVIRONMENTAL CUTOFF DATE" means the later of the dates upon which (i)
the Land Lease terminates, or (ii) NAI surrenders possession and control of the
Property and ceases to have interest in the Land or Improvements or rights with
respect thereto under any of the Operative Documents.

        "ENVIRONMENTAL LOSSES" means Losses suffered or incurred by BNPLC or any
other Interested Party, directly or indirectly, relating to or arising out of,
based on or as a result of any of the following: (i) any Hazardous Substance
Activity on or prior to the Environmental Cutoff Date; (ii) any violation on or
prior to the Environmental Cutoff Date of any applicable

     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 9

<PAGE>   64



Environmental Laws relating to the Property or to the ownership, use, occupancy
or operation thereof; (iii) any investigation, inquiry, order, hearing, action,
or other proceeding by or before any governmental or quasi-governmental agency
or authority in connection with any Hazardous Substance Activity that occurs or
is alleged to have occurred on or prior to the Environmental Cutoff Date; or
(iv) any claim, demand, cause of action or investigation, or any action or other
proceeding, whether meritorious or not, brought or asserted against any
Interested Party which directly or indirectly relates to, arises from, is based
on, or results from any of the matters described in clauses (i), (ii), or (iii)
of this definition or any allegation of any such matters. For purposes of
determining whether Losses constitute "Environmental Losses," as the term is
used in the Land Lease, any actual or alleged Hazardous Substance Activity or
violation of Environmental Laws relating to the Property will be presumed to
have occurred prior to the Environmental Cutoff Date unless NAI establishes by
clear and convincing evidence to the contrary that the relevant Hazardous
Substance Activity or violation of Environmental Laws did not occur or commence
prior to the Environmental Cutoff Date.

        "ENVIRONMENTAL REPORTS" means collectively the following reports
(whether one or more), which were provided by NAI to BNPLC prior to the
Effective Date: Phase I Environmental Site Assessment for 1330-1350 Geneva and
1345-1347 Crossman Avenue, Sunnyvale, California, dated November 1999 by Romig
Consulting Engineers.

        "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended from time to time, together with all rules and regulations promulgated
with respect thereto.

        "ERISA AFFILIATE" means any Person who for purposes of Title IV of ERISA
is a member of NAI's controlled group, or under common control with NAI, within
the meaning of Section 414 of the Internal Revenue Code, and the regulations
promulgated and rulings issued thereunder.

        "ESCROWED PROCEEDS" means, subject to the exclusions specified in the
next sentence, any money that is received by BNPLC from time to time during the
Term (and any interest earned thereon) from any party (1) under any property
insurance policy as a result of damage to the Property, (2) as compensation for
any restriction imposed by any governmental authority upon the use or
development of the Property or for the condemnation of the Property or any
portion thereof, (3) because of any judgment, decree or award for physical
damage to the Property or (4) as compensation under any title insurance policy
or otherwise as a result of any title defect or claimed title defect with
respect to the Property; provided, however, in determining the amount of
"Escrowed Proceeds" there shall be deducted all expenses and costs of every
type, kind and nature (including Attorneys' Fees) incurred by BNPLC to collect
such proceeds. Notwithstanding the foregoing, "Escrowed Proceeds" will not
include (A) any payment to BNPLC by a Participant or an Affiliate of BNPLC that
is made to compensate BNPLC for the Participant's or Affiliate's share of any
Losses BNPLC may incur as a result of any of the events described in the
preceding clauses (1) through (4), (B) any money or proceeds that have been
applied as a Qualified Prepayment or to pay any Breakage Costs or other costs
incurred in connection with a Qualified Prepayment, (C) any money or proceeds
that, after no less than ten days notice to NAI, BNPLC returns or pays to a
third party because of BNPLC's good faith belief that such return or payment is
required by law, (D) any money or proceeds paid by BNPLC to NAI or offset
against any amount owed by NAI, or (E) any money or proceeds used


     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 10

<PAGE>   65

by BNPLC in accordance with the Land Lease for repairs or the restoration of the
Property or to obtain development rights or the release of restrictions that
will inure to the benefit of future owners or occupants of the Property. Until
Escrowed Proceeds are paid to NAI pursuant to Paragraph 10 of the Land Lease,
transferred to a purchaser under the Purchase Agreement as therein provided or
applied as a Qualified Prepayment or as otherwise described in the preceding
sentence, BNPLC shall keep the same deposited in one or more interest bearing
accounts, and all interest earned on such account shall be added to and made a
part of Escrowed Proceeds.

        "ESTABLISHED MISCONDUCT" of a Person means, and is limited to: (1) if
the Person is bound by the Operative Documents or the Participation Agreement, a
breach by such Person of the express provisions of the Operative Documents or
the Participation Agreement, as applicable, that continues beyond any period for
cure provided therein, and (2) conduct of such Person or its Affiliates that has
been determined to constitute wilful misconduct or Active Negligence in or as a
necessary element of a final judgment rendered against such Person by a court
with jurisdiction to make such determination. Established Misconduct of one
Interested Party shall not be attributed to a second Interested Party unless the
second Interested Party is an Affiliate of the first. Negligence which does not
constitute Active Negligence shall not in any event constitute Established
Misconduct. For purposes of this definition, "conduct of a Person" will include
(1) the conduct of an employee of that Person, but only to the extent that the
employee is acting within the scope of his employment by that Person, as
determined in or as a necessary element of a final judgment rendered against
such Person by a court with jurisdiction to make such determination, and (2) the
conduct of an agent of that Person (such as an independent environmental
consultant engaged by that Person), but only to the extent that the agent is, as
determined in or as a necessary element of a final judgment rendered against
such Person by a court with jurisdiction to make such determination, (x) acting
within the scope of the authority granted to him by such Person, (y) not acting
with the consent or approval of or under the direction of NAI or NAI's
Affiliates, employees or agents, and (z) not acting in good faith to mitigate
Losses that such Person may suffer because of a breach or repudiation by NAI of
the Land Lease or the Purchase Documents.

         "EUROCURRENCY LIABILITIES" shall have the meaning assigned to it in
Regulation D of the Board of Governors of the Federal Reserve System, as in
effect from time to time.

        "EURODOLLAR RATE RESERVE PERCENTAGE" means, for purposes of determining
the Effective Rate for any Base Rent Period, the reserve percentage applicable
two Business Days before the first day of such period under regulations issued
from time to time by the Board of Governors of the Federal Reserve System (or
any successor) for determining the maximum reserve requirement (including any
emergency, supplemental or other marginal reserve requirement) for BNPLC's
Parent with respect to liabilities or deposits consisting of or including
Eurocurrency Liabilities (or with respect to any other category or liabilities
by reference to which LIBOR is determined) having a term comparable to such
period.

        "EVENT OF DEFAULT" shall have the meaning assigned to it in subparagraph
17 of the Land Lease.

        "EXCLUDED DEPOSIT TAKER LOSSES" shall have the meaning assigned to it in
the Pledge Agreement.


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<PAGE>   66


        "EXCLUDED TAXES" means (1) all federal, state and local income taxes
upon Base Rent, any interest paid to BNPLC or any Participant pursuant to
subparagraph 3.(f) of the Land Lease, and any additional compensation claimed by
BNPLC pursuant to subparagraph 5.(b)(ii) of the Land Lease; (2) any transfer or
change of ownership taxes assessed because of BNPLC's transfer or conveyance to
any third party of any rights or interest in the Land Lease, the Purchase
Agreement or the Property (other than any such taxes assessed because of any
Permitted Transfer under clauses (1), (3), (4), (5), (6) or (7) of the
definition of Permitted Transfer in this Agreement), (3) all federal, state and
local income taxes upon any amounts paid as reimbursement for or to satisfy
Losses incurred by BNPLC or any Participant to the extent such taxes are offset
by a corresponding reduction of BNPLC's or the applicable Participant's income
taxes because of BNPLC's or such Participant's deduction of the reimbursed
Losses from its taxable income or because of any tax credits attributable
thereto. If, however, a change in Applicable Laws after the Effective Date
results in an increase in such taxes for any reason other than an increase in
the applicable tax rates (e.g., a disallowance of deductions that would
otherwise be available against payments described in clause (A) of this
definition), then for purposes of the Operative Documents, the term "Excluded
Taxes" will not include the increase in such taxes attributable to the change.

        "EXISTING BUILDINGS" means the buildings presently located on the Land,
other than the two buildings to be demolished as described in Exhibit B to the
Construction Management Agreement to make way for the new Building 6, Building 7
and Building 8.

        "EXISTING BUILDINGS LAND PERCENTAGE" means forty percent (40%), which is
the percentage of the Land that NAI has determined will primarily serve the
Existing Buildings after construction contemplated in the Construction
Management Agreement is complete.

        "EXISTING CONTRACT" means the Purchase Agreement covering the Land
between NAI and Seller, dated September 9, 1999.

        "FED FUNDS RATE" means, for any period, a fluctuating interest rate
(expressed as a per annum rate and rounded upwards, if necessary, to the next
1/16 of 1%) equal for each day during such period to the weighted average of the
rates on overnight Federal funds transactions with members of the Federal
Reserve System arranged by Federal funds brokers, as published for such day (or,
if such day is not a Business Day, for the next preceding Business Day) by the
Federal Reserve Bank of New York, or, if such rates are not so published for any
day which is a Business Day, the average of the quotations for such day on such
transactions received by BNPLC's Parent from three Federal funds brokers of
recognized standing selected by BNPLC's Parent. All determinations of the Fed
Funds Rate by BNPLC's Parent shall, in the absence of clear and demonstrable
error, be binding and conclusive upon NAI.

        "GAAP" means generally accepted accounting principles in the United
States of America as in effect from time to time, applied on a basis consistent
with those used in the preparation of the financial statements referred to in
subparagraph 13.(a) of the Land Lease (except for changes with which NAI's
independent public accountants concur).

        "HAZARDOUS SUBSTANCE" means (i) any chemical, compound, material,
mixture or substance that is now or hereafter defined or listed in, regulated
under, or otherwise classified

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<PAGE>   67

pursuant to, any Environmental Laws as a "hazardous substance," "hazardous
material," "hazardous waste," "extremely hazardous waste or substance,"
"infectious waste," "toxic substance," "toxic pollutant," or any other
formulation intended to define, list or classify substances by reason of
deleterious properties, including ignitability, corrosiveness, reactivity,
carcinogenicity, toxicity or reproductive toxicity; (ii) petroleum, any fraction
of petroleum, natural gas, natural gas liquids, liquified natural gas, synthetic
gas usable for fuel (or mixtures of natural gas and such synthetic gas), and ash
produced by a resource recovery facility utilizing a municipal solid waste
stream, and drilling fluids, produced waters and other wastes associated with
the exploration, development or production of crude oil, natural gas or
geothermal resources; (iii) asbestos and any asbestos containing material; and
(v) any other material that, because of its quantity, concentration or physical
or chemical characteristics, poses a significant present or potential hazard to
human health or safety or to the environment if released into the workplace or
the environment.

        "HAZARDOUS SUBSTANCE ACTIVITY" means any actual, proposed or threatened
use, storage, holding, release (including any spilling, leaking, leaching,
pumping, pouring, emitting, emptying, dumping, disposing into the environment,
and the continuing migration into or through soil, surface water, groundwater or
any body of water), discharge, deposit, placement, generation, processing,
construction, treatment, abatement, removal, disposal, disposition, handling or
transportation of any Hazardous Substance from, under, in, into or on the
Property, including the movement or migration of any Hazardous Substance from
surrounding property, surface water, groundwater or any body of water under, in,
into or onto the Property and any resulting residual Hazardous Substance
contamination in, on or under the Property. "HAZARDOUS SUBSTANCE ACTIVITY" also
means any existence of Hazardous Substances on the Property that would cause the
Property or the owner or operator thereof to be in violation of, or that would
subject the Property to any remedial obligations under, any Environmental Laws,
including CERCLA and RCRA, assuming disclosure to the applicable governmental
authorities of all relevant facts, conditions and circumstances pertaining to
the Property.

        "IMPOSITIONS" means all sales, excise, ad valorem, gross receipts,
business, transfer, stamp, occupancy, rental and other taxes, levies, fees,
charges, surcharges, assessments or penalties which arise out of or are
attributable to the Land Lease or which are imposed upon BNPLC or the Property
because of the ownership, leasing, occupancy, sale or operation of the Property,
or any part thereof or interest therein, or relating to or required to be paid
by any of the Permitted Encumbrances or the Development Documents, excluding
only Excluded Taxes. "IMPOSITIONS" shall include real estate taxes imposed
because of a change of use or ownership of the Property on or prior to the date
of any sale by BNPLC pursuant to the Purchase Agreement.

        "IMPROVEMENTS" means any and all (1) buildings and other real property
improvements now or hereafter erected on the Land, and (2) equipment (e.g., HVAC
systems, elevators and plumbing fixtures) attached to the buildings or other
real property improvements, the removal of which would cause structural or other
material damage to the buildings or other real property improvements or would
materially and adversely affect the value or use of the buildings or other real
property improvements.

        "INTERESTED PARTY" means each of (1) BNPLC, its Affiliates and its
successors and assigns as to the Property or any part thereof or any interest
therein, (2) BNPLC's Parent, and (3)

     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 13

<PAGE>   68

any other Participants and their permitted successors and assigns under the
Participation Agreement; provided, however, none of the following shall
constitute an Interested Party: (a) any Person to whom BNPLC may transfer an
interest in the Property by a conveyance that is not a Permitted Transfer and
others that cannot lawfully claim an interest in the Property except through or
under such a transfer by BNPLC, (b) NAI or any Person that cannot lawfully claim
an interest in the Property except through or under a conveyance from NAI, or
(c) any Applicable Purchaser under the Purchase Agreement and any Person that
cannot lawfully claim an interest in the Property except through or under a
conveyance from such Applicable Purchaser.

        "ISSUE 97-1 NON-PERFORMANCE-RELATED SUBJECTIVE EVENT OF DEFAULT" means
an Event of Default that is unrelated to the Property or the use or maintenance
thereof and that results solely from (A) a breach by NAI of a provision in any
Operative Document, the occurrence of which breach cannot be objectively
determined, or (B) any other event described in subparagraph 17.(e) of the Land
Lease, the occurrence of which event cannot be objectively determined. For
example, an Event of Default under subparagraph 17.(e) of the Land Lease
resulting solely from a failure of NAI to "generally" pay its debts as such
debts become due (in contrast to a failure of NAI to pay Rent to BNPLC as it
becomes due under the Land Lease) would constitute an Issue 97-1
Non-performance-related Subjective Event of Default. In no event, however, will
the term "Issue 97-1 Non-performance-related Subjective Event of Default"
include an Event of Default resulting from (1) a failure of NAI to make any
payment required to BNPLC under the Operative Documents, (2) a breach by NAI of
the provisions set forth in Schedule 1 attached to the Land Lease (which set
forth financial covenants), (3) any failure of NAI to use, maintain and insure
the Property in accordance with the requirements of the Land Lease, or (4) any
failure of NAI to pay the full amount of any Supplemental Payment on the
Designated Sale Date as required by the Purchase Agreement. Except as provided
in subparagraph 1(A)(2)(c)(i) of the Purchase Agreement, the characterization of
any Event of Default as an Issue 97-1 Non-performance-related Subjective Event
of Default will not affect the rights or remedies available to BNPLC because of
the Event of Default.

        "LAND" means the land covered by the land described in Exhibit A
attached to the Closing Certificate, the Land Lease and the Purchase Agreement.

        "LAND LEASE" means the Lease Agreement (Phase IV - Land") dated as of
October 2, 2000 between BNPLC, as landlord, and NAI, as tenant, pursuant to
which NAI has agreed to lease BNPLC's interest in the Property, as such Lease
Agreement may be extended, supplemented, amended, restated or otherwise modified
from time to time in accordance with its terms.

        "LIBOR" means, for purposes of determining the Effective Rate for each
Base Rent Period, the rate determined by BNPLC's Parent to be the average rate
of interest per annum (rounded upwards, if necessary, to the next 1/16 of 1%) of
the rates at which deposits of dollars are offered or available to BNPLC's
Parent in the London interbank market at approximately 11:00 a.m. (London time)
on the second Business Day preceding the first day of such period. BNPLC shall
instruct BNPLC's Parent to consider deposits, for purposes of making the
determination described in the preceding sentence, that are offered: (i) for
delivery on the first day of such Base Rent Period, as the case may be, (ii) in
an amount equal or comparable to the total (projected on the applicable date of
determination by BNPLC's Parent) Stipulated Loss

     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 14

<PAGE>   69

Value on the first day of such period, and (iii) for a time equal or comparable
to the length of such period. If BNPLC's Parent so chooses, it may determine
LIBOR for any period by reference to the rate reported by the British Banker's
Association on Page 3750 of the Telerate Service at approximately 11:00 a.m.
(London time) on the second Business Day preceding the first day of such period.
If for any reason BNPLC's Parent determines that it is impossible or
unreasonably difficult to determine LIBOR with respect to a given Base Rent
Period in accordance with the foregoing, or if BNPLC's Parent shall determine
that it is unlawful (or any central bank or governmental authority shall assert
that it is unlawful) for BNPLC, BNPLC's Parent or any Participant to provide or
maintain the Prior Funding Advances during any Base Rent Period for which Base
Rent is computed by reference to LIBOR, then "LIBOR" for that period shall equal
the Base Rate for that period. All determinations of LIBOR by BNPLC's Parent
shall, in the absence of clear and demonstrable error, be binding and conclusive
upon NAI.

        "LIEN" means any mortgage, pledge, security interest, encumbrance, lien
or charge of any kind (including any agreement to give any of the foregoing, any
conditional sale or other title retention agreement, any lease in the nature
thereof, any agreement to sell receivables with recourse, and the filing of or
agreement to give any financing statement under the Uniform Commercial Code of
any jurisdiction). In addition, for purposes of subparagraph A.(8) of Part III
of Schedule 1 attached to the Land Lease, "Lien" includes any Liens under ERISA
relating to Unfunded Benefit Liabilities of which NAI is required to notify
BNPLC under subparagraph 13.(a)(vii) of the Land Lease (irrespective of whether
NAI actually notifies BNPLC as required thereunder).

        "LIENS REMOVABLE BY BNPLC" means, and is limited to, Liens encumbering
the Property that are asserted (1) other than as contemplated in the Operative
Documents, by BNPLC itself, (2) by third parties lawfully claiming through or
under BNPLC (which for purposes of the Land Lease shall include any judgment
liens established against the Property because of a judgment rendered against
BNPLC and shall also include any liens established against the Property to
secure past due Excluded Taxes), or (3) by third parties lawfully claiming under
a deed or other instrument duly executed by BNPLC; provided, however, Liens
Removable by BNPLC shall not include (A) any Permitted Encumbrances or
Development Documents (regardless of whether claimed through or under BNPLC),
(B) the Operative Documents or any other document executed by BNPLC with the
knowledge of (and without objection by) NAI's counsel contemporaneously with the
execution and delivery of the Operative Documents, (C) Liens which are neither
lawfully claimed through or under BNPLC (as described above) nor claimed under a
deed or other instrument duly executed by BNPLC, (D) Liens claimed by NAI or
claimed through or under a conveyance made by NAI, (E) Liens arising because of
BNPLC's compliance with Applicable Law, the Operative Documents, Permitted
Encumbrances, the Development Documents or any written request made by NAI, (F)
Liens securing the payment of property taxes or other amounts assessed against
the Property by any governmental authority, other than to secure the payment of
past due Excluded Taxes or to secure damages caused by (and attributed by any
applicable principles of comparative fault to) BNPLC's own Established
Misconduct, (G) Liens resulting from or arising in connection with any breach by
NAI of the Operative Documents; or (H) Liens resulting from or arising in
connection with any Permitted Transfer that occurs more than thirty days after
any Designated Sale Date upon which, for any reason, NAI or an Affiliate of NAI
or any Applicable Purchaser


     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 15

<PAGE>   70

shall not purchase BNPLC's interest in the Property pursuant to the Purchase
Agreement for a cash price to BNPLC (when taken together with any Supplemental
Payment made by NAI pursuant to Paragraph 1(A)(2) of the Purchase Agreement, in
the case of a purchase by an Applicable Purchaser) equal to the Break Even
Price.

        "LOSSES" means the following: any and all losses, liabilities, damages
(whether actual, consequential, punitive or otherwise denominated), demands,
claims, administrative or legal proceedings, actions, judgments, causes of
action, assessments, fines, penalties, costs and expenses (including Attorneys'
Fees and the fees of outside accountants and environmental consultants), of any
and every kind or character, foreseeable and unforeseeable, liquidated and
contingent, proximate and remote.

        "MATERIAL ENVIRONMENTAL COMMUNICATION" means a communication between NAI
or its agents and a regulatory agency or third party, which causes, or
potentially could cause (whether by implementation of or response to said
communication), a material change in the scope, duration, or nature of any
Remedial Work.

        "MAXIMUM REMARKETING OBLIGATION" shall have the meaning indicated in
subparagraph 1(A)(2)(c) of the Purchase Agreement.

        "MINIMUM EXTENDED REMARKETING PRICE" shall have the meaning assigned to
it in subparagraph 2(B) of the Purchase Agreement.

        "MULTIEMPLOYER PLAN" means a multiemployer plan as defined in Section
3(37) of ERISA to which contributions have been made by NAI or any ERISA
Affiliate during the preceding six years and which is covered by Title IV of
ERISA.

        "NAI" means Network Appliance, Inc., a California corporation.

        "NAI'S EXTENDED REMARKETING PERIOD" shall have the meaning assigned to
it in subparagraph 2(A) of the Purchase Agreement.

        "NAI'S EXTENDED REMARKETING RIGHT" shall have the meaning assigned to it
in subparagraph 2(A) of the Purchase Agreement.

        "NAI'S INITIAL REMARKETING RIGHTS AND OBLIGATIONS" shall have the
meaning assigned to it in subparagraph 1(A)(2) of the Purchase Agreement.

        "OPERATIVE DOCUMENTS" means the Closing Certificate, the Land Lease, the
Purchase Agreement, the Pledge Agreement and this Common Definitions and
Provisions Agreement (Phase IV - Land).

        "OTHER COMMON DEFINITIONS AND PROVISIONS AGREEMENT" means the Common
Definitions and Provisions Agreement (Phase IV - Improvements), dated as of the
October 2, 2000, between BNPLC and NAI, as such Common Definitions and
Provisions Agreement may be extended, supplemented, amended, restated or
otherwise modified from time to time in accordance with its terms.


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<PAGE>   71

        "OTHER LEASE AGREEMENT" means the Lease Agreement (Phase IV -
Improvements), dated as of October 2, 2000, between BNPLC and NAI, as such Lease
Agreement may be extended, supplemented, amended, restated or otherwise modified
from time to time in accordance with its terms.

        "OTHER PURCHASE AGREEMENT" means the Purchase Agreement (Phase IV -
Improvements), dated as of October 2, 2000, between BNPLC and NAI, as such
Purchase Agreement may be extended, supplemented, amended, restated or otherwise
modified from time to time in accordance with its terms.

        "PARTICIPANT" means BNPLC's Parent and any other Person that, upon
becoming a party to the Participation Agreement and the Pledge Agreement by
executing supplements as contemplated therein, agrees from time to time to
participate in all or some of the risks and rewards to BNPLC of the Land Lease
and the Purchase Documents. As of the Effective Date, the only Participant is
BNPLC's Parent, but BNPLC may agree after the Effective Date to share in risks
and rewards of the Land Lease and the Purchase Documents with other
Participants. However, no Person other than BNPLC's Parent and its Affiliates
shall qualify as a Participant for purposes of the Operative Documents or other
agreements concerning the Property to which NAI is a party unless such Person,
during the continuance of an Event of Default or otherwise with NAI's prior
written approval (which approval will not be unreasonably withheld), became a
party to the Pledge Agreement and to the Participation Agreement by executing
supplements to those agreements as contemplated therein.

        "PARTICIPATION AGREEMENT" means the Participation Agreement between
BNPLC and BNPLC's Parent dated as of the October 2, 2000, pursuant to which
BNPLC's Parent has agreed to participate in the risks and rewards to BNPLC of
the Land Lease and the other Operative Documents, as such Participation
Agreement may be extended, supplemented, amended, restated or otherwise modified
from time to time in accordance with its terms.

        "PBGC" means the Pension Benefit Guaranty Corporation and any entity
succeeding to any or all of its functions under ERISA.

        "PERMITTED ENCUMBRANCES" means (i) the encumbrances and other matters
affecting the Property that are set forth in Exhibit B attached to the Closing
Certificate, (ii) any easement agreement or other document affecting title to
the Property executed by BNPLC at the request of or with the consent of NAI
(including the Other Lease Agreement, the Other Purchase Agreement and all
documents executed by BNPLC pursuant to the Other Purchase Agreement), (iii) the
Premises Lease, (iv) any Liens securing the payment of Impositions which are not
delinquent or claimed to be delinquent or which are being contested in
accordance with subparagraph 5.(a) of the Land Lease, and (iv) mechanics' and
materialmen's liens for amounts not past due or claimed to be past due or which
are being contested in accordance with subparagraph 11.(c) of the Land Lease.

        "PERMITTED HAZARDOUS SUBSTANCE USE" means the use, generation, storage
and offsite disposal of Permitted Hazardous Substances in strict accordance with
applicable Environmental Laws and with due care given the nature of the
Hazardous Substances involved; provided, the scope and nature of such use,
generation, storage and disposal shall not:


     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 17

<PAGE>   72

               (1) exceed that reasonably required for the construction of the
        Construction Project in accordance with the Other Lease Agreement and
        the Construction Management Agreement or for the operation of the
        Property for the purposes expressly permitted under subparagraph 2.(a)
        of the Land Lease; or

               (2) include any disposal, discharge or other release of Hazardous
        Substances from the Property in any manner that might allow such
        substances to reach surface water or groundwater, except (i) through a
        lawful and properly authorized discharge (A) to a publicly owned
        treatment works or (B) with rainwater or storm water runoff in
        accordance with Applicable Laws and any permits obtained by NAI that
        govern such runoff; or (ii) any such disposal, discharge or other
        release of Hazardous Substances for which no permits are required and
        which are not otherwise regulated under applicable Environmental Laws.

Further, notwithstanding anything to the contrary herein contained, Permitted
Hazardous Substance Use shall not include any use of the Property in a manner
that requires a RCRA treatment, storage or disposal permit, including a
landfill, incinerator or other waste disposal facility.

        "PERMITTED HAZARDOUS SUBSTANCES" means Hazardous Substances used and
reasonably required for the construction of the Construction Project or for the
use of the Property by NAI and its permitted subtenants and assigns for the
purposes expressly permitted by subparagraph 2.(a) of the Land Lease, in either
case in strict compliance with all Environmental Laws and with due care given
the nature of the Hazardous Substances involved. Without limiting the generality
of the foregoing, Permitted Hazardous Substances shall include usual and
customary office, laboratory and janitorial products.

        "PERMITTED TRANSFER" means any one or more of the following: (1) the
creation or conveyance by BNPLC of rights and interests in favor of any
Participant pursuant to the Participation Agreement; (2) the creation or
conveyance of rights and interests in favor of or to BNP Paribas (through its
San Francisco Branch or otherwise), as BNPLC's Parent, or any other Qualified
Affiliate of BNPLC, provided that NAI must be notified before any such
conveyance to BNP Paribas or another Qualified Affiliate of (A) any interest in
the Property or any portion thereof by an assignment or other document which
will be recorded in the real property records of Santa Clara County, California
or (B) BNPLC's entire interest in the Land and the Property; (3) any assignment
or conveyance by BNPLC or its permitted successors or assigns to any present or
future Participant of any lien or security interest against the Property (in
contrast to a conveyance of BNPLC's fee estate in the Land and Improvements) or
of any interest in Rent, payments required by or under the Purchase Documents or
payments to be generated from the Property after the Term, provided that such
assignment or conveyance is made expressly subject to the rights of NAI under
the Operative Documents; (4) any agreement to exercise or refrain from
exercising rights or remedies under the Operative Documents made by BNPLC with
any present or future Participant; (5) any assignment or conveyance by BNPLC
requested by NAI or required by any Permitted Encumbrance, by the Purchase
Agreement, by the Existing Contract, by any other Development Contract or by
Applicable Laws; or (6) any assignment or conveyance after a Designated Sale
Date on which NAI shall not have purchased or caused an Applicable


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<PAGE>   73

Purchaser to purchase BNPLC's interest in the Property and, if applicable, after
the expiration of the thirty day cure period specified in Paragraph 4(D) of the
Purchase Agreement.

        "PERSON" means an individual, a corporation, a partnership, an
unincorporated organization, an association, a joint stock company, a joint
venture, a trust, an estate, a government or agency or political subdivision
thereof or other entity, whether acting in an individual, fiduciary or other
capacity.

        "PERSONAL PROPERTY" shall have the meaning assigned to it on page 2 of
the Land Lease.

        "PLAN" means any employee benefit or other plan established or
maintained, or to which contributions have been made, by NAI or any ERISA
Affiliate of NAI during the preceding six years and which is covered by Title IV
of ERISA, other than a Multiemployer Plan.

        "PLEDGE AGREEMENT" means the Pledge Agreement (Phase IV - Land) dated as
of the date hereof between BNPLC and NAI, pursuant to which NAI may pledge
certificates of deposit as security for NAI's obligations under the Purchase
Agreement (and for the corresponding obligations of BNPLC to the Participants
under the Participation Agreement), as such Pledge Agreement may be extended,
supplemented, amended, restated or otherwise modified from time to time in
accordance with its terms.

        "PREMISES LEASE" means the sublease of space within the Improvements,
between NAI, as landlord, and Lockheed Martin, a Maryland corporation, as
tenant, executed of even date herewith, and any subleases or other transfers
under and permitted by the terms of any such lease.

        "PRIME RATE" means the prime interest rate or equivalent charged by
BNPLC's Parent in the United States of America as announced or published by
BNPLC's Parent from time to time, which need not be the lowest interest rate
charged by BNPLC's Parent. If for any reason BNPLC's Parent does not announce or
publish a prime rate or equivalent, the prime rate or equivalent announced or
published by either CitiBank, N.A. or any New York branch or office of Credit
Commercial de France as selected by BNPLC shall be used to compute the rate
describe in the preceding sentence. The prime rate or equivalent announced or
published by such bank need not be the lowest rate charged by it. The Prime Rate
may change from time to time after the Effective Date without notice to NAI as
of the effective time of each change in rates described in this definition.

        "PRIOR FUNDING ADVANCES" means $55,800,000, which equals the advances
made prior to the Effective Date by BNPLC's Parent (directly or through one or
more of its Affiliates) or by Participants to or on behalf of BNPLC to cover the
cost of BNPLC's acquisition of the Property and other costs related to the
documents that are being amended, restated and replaced by the Operative
Documents. (The total of Prior Funding Advances under and as defined herein and
under and as defined in the Other Common Definitions and Provisions Agreement
equals $62,000,000, which is the sum as of the Effective Date of the outstanding
Stipulated Loss Values under and as defined in the leases agreements that are
being amended, restated and replaced by the Improvements Lease and by the Other
Lease.)


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<PAGE>   74

        "PROPERTY" means the Personal Property and the Real Property,
collectively. Any rights, titles and interests acquired by BNPLC under the
Existing Contract, to the extent not covered by the Land Lease and thus not
encompassed within this definition of Property, are intended to be covered by
the Other Lease Agreement and encompassed within the term "Property" as defined
in the Other Common Definitions and Provisions Agreement.

        "PURCHASE AGREEMENT" means the Purchase Agreement (Phase IV - Land)
dated as of October 2, 2000 between BNPLC and NAI, as such Purchase Agreement
may be extended, supplemented, amended, restated or otherwise modified from time
to time in accordance with its terms.

        "PURCHASE DOCUMENTS" means collectively (1) the Purchase Agreement, (2)
the Memorandum of Purchase Agreement executed by BNPLC and NAI as of the
Effective Date and recorded to provide notice of the Purchase Agreement; and (3)
the Pledge Agreement and all financing statements, notices, acknowledgments and
certificates of deposit executed or delivered from time to time by NAI, BNPLC or
the other parties to the Pledge Agreement pursuant to and as expressly provided
therein.

        "PURCHASE OPTION" shall have the meaning assigned to it in subparagraph
1(A)(1) of the Purchase Agreement.

        "QUALIFIED AFFILIATE" means any Person that is one hundred percent
(100%) owned, directly or indirectly, by BNP Paribas or any successor of such
bank; provided, that such Person can make (and has in writing made) the same
representations to NAI that BNPLC has made in Paragraphs 3(D) and 3(E) of the
Closing Certificate; and, provided, further, that such Person is not insolvent.

        "QUALIFIED PREPAYMENTS" means any payments received by BNPLC from time
to time during the Term (1) under any property insurance policy as a result of
damage to the Property, (2) as compensation for any restriction placed upon the
use or development of the Property or for the condemnation of the Property or
any portion thereof, (3) because of any judgment, decree or award for injury or
damage to the Property or (4) under any title insurance policy or otherwise as a
result of any title defect or claimed title defect with respect to the Property;
provided, however, that (x) in determining the amount of "Qualified
Prepayments", there shall be deducted all expenses and costs of every kind, type
and nature (including taxes, Breakage Costs and Attorneys' Fees) incurred by
BNPLC with respect to the collection or application of such payments, (y)
"Qualified Prepayments" shall not include any payment to BNPLC by a Participant
or an Affiliate of BNPLC that is made to compensate BNPLC for the Participant's
or Affiliate's share of any Losses BNPLC may incur as a result of any of the
events described in the preceding clauses (1) through (4) and (z) "Qualified
Prepayments" shall not include any payments received by BNPLC that BNPLC has
paid or is obligated to pay to NAI for the restoration or repair of the Property
or that BNPLC is holding as Escrowed Proceeds pursuant to Paragraph 10 of the
Land Lease or any other provision of the Land Lease. For purposes of computing
the total Qualified Prepayments (and other amounts dependent upon Qualified
Prepayments, such as Stipulated Loss Value) paid to or received by BNPLC as of
any date, payments described in the preceding clauses (1) through (4) will be
considered as Escrowed


     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 20

<PAGE>   75

Proceeds, not Qualified Prepayments, until they are actually applied as
Qualified Prepayments by BNPLC as provided in the Paragraph 10 of the Land
Lease.

        "QUALIFYING SECURITY INTEREST" means a first priority perfected security
interest under the Pledge Agreement.

        "REAL PROPERTY" shall have the meaning assigned to it on page 2 of the
Land Lease.

        "REMEDIAL WORK" means any investigation, monitoring, clean-up,
containment, remediation, removal, payment of response costs, or restoration
work and the preparation and implementation of any closure or other required
remedial plans that any governmental agency or political subdivision requires or
approves (or could reasonably be expected to require if it was aware of all
relevant circumstances concerning the Property), whether by judicial order or
otherwise, because of the presence of or suspected presence of Hazardous
Substances in, on, under or about the Property or because of any prior Hazardous
Substance Activity. Without limiting the generality of the foregoing, Remedial
Work also means any obligations imposed upon or undertaken by NAI pursuant to
Development Documents or any recommendations or proposals made therein.

        "RENT" means the Base Rent and all Additional Rent.

        "RESIDUAL RISK PERCENTAGE" means fifteen percent (15%).

        "RESPONSIBLE FINANCIAL OFFICER" means the chief financial officer, the
controller, the treasurer or the assistant treasurer of NAI.

        "SALE CLOSING DOCUMENTS" shall have the meaning assigned to it in
subparagraph 1(C) of the Purchase Agreement.

        "SECURED SPREAD" means thirty basis points (30/100 of 1%).

        "SELLER" means Trinet Essential Facilities XII, Inc., a Maryland
corporation.

        "STIPULATED LOSS VALUE" as of any date means the amount equal to the sum
of the Prior Funding Advances, minus all funds actually received by BNPLC and
applied as Qualified Prepayments on or prior to such date. Under no
circumstances will any payment of Base Rent reduce Stipulated Loss Value.

        "SUBSIDIARY" means, with respect to any Person, any Affiliate of which
at least a majority of the securities or other ownership interests having
ordinary voting power then exercisable for the election of directors or other
persons performing similar functions are at the time owned directly or
indirectly by such Person.

        "SUPPLEMENTAL PAYMENT" shall have the meaning assigned to it in
subparagraph 1(A)(2)(c) of the Purchase Agreement.

        "TERM" shall have the meaning assigned to it in subparagraph 1.(a) of
the Land Lease.


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<PAGE>   76

        "THIRD PARTY PRICE"shall have the meaning assigned to it in subparagraph
1(A)(2) of the Purchase Agreement.

        "THIRD PARTY SALE NOTICE" shall have the meaning assigned to it in
subparagraph 2(C) of the Purchase Agreement.

        "THIRD PARTY SALE PROPOSAL"shall have the meaning assigned to it in
subparagraph 2(C) of the Purchase Agreement.

        "THIRD PARTY TARGET PRICE" shall have the meaning assigned to it in
subparagraph 2(C) of the Purchase Agreement.

        "TRANSACTION EXPENSES" means costs incurred in connection with the
preparation and negotiation of the Operative Documents and related documents and
the consummation of the transactions contemplated therein.

        "UNFUNDED BENEFIT LIABILITIES" means, with respect to any Plan or
Multiemployer Plan, the amount (if any) by which the present value of all
benefit liabilities (within the meaning of Section 4001(a)(16) of ERISA) under
the Plan or Multiemployer Plan exceeds the market value of all Plan or
Multiemployer assets allocable to such benefit liabilities, as determined on the
most recent valuation date of the Plan or Multiemployer Plan and in accordance
with the provisions of ERISA for calculating the potential liability of NAI or
any ERISA Affiliate of NAI under Title IV of ERISA.

        "VOLUNTARY RETENTION OF THE PROPERTY" means an affirmative election made
by BNPLC to keep the Property pursuant to, and under the circumstances described
in, the second sentence of subparagraph 1(A)(2)(a) of the Purchase Agreement.


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<PAGE>   77



                      ARTICLE II - RULES OF INTERPRETATION

        THE FOLLOWING PROVISIONS WILL APPLY TO AND GOVERN THE INTERPRETATION OF
EACH OF THE OPERATIVE DOCUMENTS:

        1. NOTICES. The provision of any Operative Document, or of any
Applicable Laws with reference to the sending, mailing or delivery of any notice
or demand under any Operative Document or with reference to the making of any
payment required under any Operative Document, shall be deemed to be complied
with when and if the following steps are taken:

               (i) All Rent and other amounts required to be paid by NAI to
        BNPLC shall be paid to BNPLC in immediately available funds by wire
        transfer to:

                        Federal Reserve Bank of New York
                        ABA 026007689 BNP Paribas
                        /BNP/ BNP San Francisco
                        /AC/ 14334000176
                        /Ref/ NAI Sunnyvale Synthetic Land Lease (Phase IV)

        or at such other place and in such other manner as BNPLC may designate
        in a notice to NAI.

               (ii) All Collateral required to be paid by NAI to the Agent shall
        be paid in immediately available funds by wire transfer to:

                        Federal Reserve Bank of New York
                        ABA 026007689 BNP Paribas
                        /BNP/ BNP San Francisco
                        /AC/ 14334000176
                        /Ref/ NAI Collateral Payment

        or at such other place and in such other manner as Agent may designate
        in a notice to NAI.

               (iii) All notices, demands, approvals, consents and other
        communications to be made under any Operative Document to or by the
        parties thereto must, to be effective for purpose of such Operative
        Document, be in writing. Notices, demands and other communications
        required or permitted under any Operative Document are to be sent to the
        addresses set forth below (or in the case of communications to
        Participants, at the addresses set forth in Schedule 1 to the
        Participation Agreement) and shall be given by any of the following
        means: (A) personal service, with proof of delivery or attempted
        delivery retained; (B) electronic communication, whether by telex,
        telegram or telecopying (if confirmed in writing sent by United States
        first class mail, return receipt requested); or (C) registered or
        certified first class mail, return receipt requested. Such addresses may
        be changed by notice to the other parties given in the same manner as
        provided above. Any notice or other communication sent pursuant to
        clause (A) or (B) hereof shall be deemed received upon such personal
        service or upon dispatch by


     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 23

<PAGE>   78


        electronic means, and, if sent pursuant to clause (C) shall be deemed
        received five days following deposit in the mail.


                             Address of BNPLC:

                             BNP Leasing Corporation
                             12201 Merit Drive
                             Suite 860
                             Dallas, Texas 75251
                             Attention: Lloyd G. Cox
                             Telecopy: (972) 788-9191

                             With a copy to:

                             BNP Paribas, San Francisco
                             180 Montgomery Street
                             San Francisco, California 94104
                             Attention: Gavin Holles
                             Telecopy: (415) 296-8954

                             And for draw requests and funding notices, with a
copy to:

                             BNP Paribas, San Francisco
                             180 Montgomery Street
                             San Francisco, California 94104
                             Attention: Paggie Wong/Tom Kunz
                             Telecopy: (415) 956-4230

                             Address of NAI:

                             Network Appliance, Inc.
                             Attn: Leslie Paulides
                             2770 San Thomas Expressway
                             Santa Clara, CA 95051
                             Telecopy: (408) 367-3452

        2. SEVERABILITY. If any term or provision of any Operative Document or
the application thereof shall to any extent be held by a court of competent
jurisdiction to be invalid and unenforceable, the remainder of such document, or
the application of such term or provision other than to the extent to which it
is invalid or unenforceable, shall not be affected thereby.

        3. NO MERGER. There shall be no merger of the Land Lease or of the
leasehold estate created by the Land Lease with any other interest in the
Property by reason of the fact that the same person may acquire or hold,
directly or indirectly, the Land Lease or the leasehold estate created hereby
and any other interest in the Property, unless all Persons with an interest in
the Property that would be adversely affected by any such merger specifically
agree in writing that such a merger shall occur. There shall be no merger of the
Purchase Agreement or of the purchase options or obligations created by the
Purchase Agreement with any other interest in the


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<PAGE>   79

Property by reason of the fact that the same person may acquire or hold,
directly or indirectly, the Land Lease or the leasehold estate created hereby
and any other interest in the Property, unless all Persons with an interest in
the Property that would be adversely affected by any such merger specifically
agree in writing that such a merger shall occur.

        4. NO IMPLIED WAIVER. The failure of BNPLC or NAI to insist at any time
upon the strict performance of any covenant or agreement or to exercise any
option, right, power or remedy contained in any Operative Document shall not be
construed as a waiver or a relinquishment thereof for the future. The failure of
Agent to insist at any time upon the strict performance of any covenant or
agreement or to exercise any option, right, power or remedy contained in the
Pledge Agreement shall not be construed as a waiver or a relinquishment thereof
for the future. The waiver of or redress for any breach of any Operative
Document by any party thereto shall not prevent a similar subsequent act from
constituting a violation. Any express waiver of any provision of any Operative
Document shall affect only the term or condition specified in such waiver and
only for the time and in the manner specifically stated therein. No waiver by
any party to any Operative Document of any provision therein shall be deemed to
have been made unless expressed in writing and signed by the party to be bound
by the waiver. A receipt by BNPLC of any Rent with knowledge of the breach by
NAI of any covenant or agreement contained in the Land Lease or any other
Operative Document shall not be deemed a waiver of such breach. A receipt by
Agent of any Collateral or other payment under the Pledge Agreement with
knowledge of the breach by NAI of any covenant or agreement contained in the
Pledge Agreement shall not be deemed a waiver of such breach.

        5. ENTIRE AND ONLY AGREEMENTS. The Operative Documents supersede any
prior negotiations and agreements between BNPLC, Agent and NAI concerning the
Property or the Collateral, and no amendment or modification of any Operative
Document shall be binding or valid unless expressed in a writing executed by all
parties to such Operative Document.

        6. BINDING EFFECT. Except to the extent, if any, expressly provided to
the contrary in any Operative Document with respect to assignments thereof, all
of the covenants, agreements, terms and conditions to be observed and performed
by the parties to the Operative Documents shall be applicable to and binding
upon their respective successors and, to the extent assignment is permitted
thereunder, their respective assigns.

        7. TIME IS OF THE ESSENCE. Time is of the essence as to all obligations
of NAI and BNPLC and all notices required of NAI and BNPLC under the Operative
Documents.

        8. GOVERNING LAW. Each Operative Document shall be governed by and
construed in accordance with the laws of the State of California without regard
to conflict or choice of laws (subject, however, in the case of the Pledge
Agreement to any contrary provisions of the "UCC," as defined in the Pledge
Agreement).

        9. PARAGRAPH HEADINGS. The paragraph and section headings contained in
the Operative Documents are for convenience only and shall in no way enlarge or
limit the scope or meaning of the various and several provisions thereof.


     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 25

<PAGE>   80

        10. NEGOTIATED DOCUMENTS. All the parties to each Operative Document and
their counsel have reviewed and revised or requested revisions to such Operative
Document, and the usual rule of construction that any ambiguities are to be
resolved against the drafting party shall not apply to the construction or
interpretation of any Operative Documents or any amendments thereof.

        11. TERMS NOT EXPRESSLY DEFINED IN AN OPERATIVE DOCUMENT. As used in any
Operative Document, a capitalized term that is not defined therein or in this
Common Definitions and Provisions Agreement (Phase IV - Land), but is defined in
another Operative Document, shall have the meaning ascribed to it in the other
Operative Document.

        12. OTHER TERMS AND REFERENCES. Words of any gender used in each
Operative Document shall be held and construed to include any other gender, and
words in the singular number shall be held to include the plural and vice versa,
unless the context otherwise requires. References in any Operative Document to
Paragraphs, subparagraphs, Sections, subsections or other subdivisions shall
refer to the corresponding Paragraphs, subparagraphs, Sections, subsections or
subdivisions of that Operative Document, unless specific reference is made to
another document or instrument. References in any Operative Document to any
Schedule or Exhibit shall refer to the corresponding Schedule or Exhibit
attached to that Operative Document, which shall be made a part thereof by such
reference. All capitalized terms used in each Operative Document which refer to
other documents shall be deemed to refer to such other documents as they may be
renewed, extended, supplemented, amended or otherwise modified from time to
time, provided such documents are not renewed, extended or modified in breach of
any provision contained in the Operative Documents or, in the case of any other
document to which BNPLC is a party or of which BNPLC is an intended beneficiary,
without the consent of BNPLC. All accounting terms used but not specifically
defined in any Operative Document shall be construed in accordance with GAAP.
The words "this [Agreement]", "herein", "hereof", "hereby", "hereunder" and
words of similar import when used in each Operative Document refer to that
Operative Document as a whole and not to any particular subdivision unless
expressly so limited. The phrases "this Paragraph", "this subparagraph", "this
Section", "this subsection" and similar phrases used in any Operative Document
refer only to the Paragraph, subparagraph, Section, subsection or other
subdivision described in which the phrase occurs. As used in the Operative
Documents the word "or" is not exclusive. As used in the Operative Documents,
the words "include", "including" and similar terms shall be construed as if
followed by "without limitation to".

        13. EXECUTION IN COUNTERPARTS. To facilitate execution, each Operative
Document may be executed in as many identical counterparts as may be required.
It shall not be necessary that the signature of, or on behalf of, each party, or
that the signature of all persons required to bind any party, appear on each
counterpart. All counterparts, taken together, shall collectively constitute a
single instrument. It shall not be necessary in making proof of any Operative
Document to produce or account for more than a single counterpart containing the
respective signatures of, or on behalf of, each of the parties hereto. Any
signature page to any counterpart may be detached from such counterpart without
impairing the legal effect of the signatures thereon and thereafter attached to
another counterpart identical thereto except having attached to it additional
signature pages.


     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 26

<PAGE>   81

        14. NOT A PARTNERSHIP, ETC. NOTHING IN ANY OPERATIVE DOCUMENT IS
INTENDED TO CREATE ANY PARTNERSHIP, JOINT VENTURE, OR OTHER JOINT ENTERPRISE
BETWEEN BNPLC AND NAI. NEITHER THE EXECUTION OF ANY OPERATIVE DOCUMENT NOR THE
ADMINISTRATION THEREOF OR OTHER DOCUMENTS REFERENCED HEREIN BY BNPLC, NOR ANY
OTHER RIGHT, DUTY OR OBLIGATION OF BNPLC UNDER OR PURSUANT TO ANY OPERATIVE
DOCUMENT IS INTENDED TO BE OR TO CREATE ANY FIDUCIARY OBLIGATIONS OF BNPLC TO
NAI.

        15. AMENDMENT AND RESTATEMENT. This Common Definitions and Provisions
Agreement (Phase IV-Land) amends, restates and replaces the Prior Common
Definitions and Provisions Agreement referenced in the recitals at the beginning
of this Common Definitions and Provisions Agreement (Phase IV-Land).

                          [The signature pages follow.]


     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 27

<PAGE>   82



        IN WITNESS WHEREOF, NAI and BNPLC have caused this Common Definitions
and Provisions Agreement (Phase IV - Land) to be executed as of October 2, 2000.



                                   "NAI"

                                   NETWORK APPLIANCE, INC.

                                   By:
                                      -----------------------------------------
                                   Name:
                                        ---------------------------------------
                                   Title:
                                         --------------------------------------



     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 28

<PAGE>   83

[Continuation of signature pages to Common Definitions and Provisions Agreement
(Phase IV - Land) dated to be effective October 2, 2000.]



                              "BNPLC"

                              BNP LEASING CORPORATION

                              By:
                                   -------------------------------------------
                                    Lloyd G. Cox, Senior Vice President


     Common Definitions and Provisions Agreement (Phase IV - Land) - Page 29