<PAGE>   1

                       SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549

                                   FORM 10-Q
(Mark One)

[ x ]    QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
         EXCHANGE ACT OF 1934

For the quarterly period ended  January 24, 1997  

                                       OR

[___]    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
         EXCHANGE ACT OF 1934

For the transition period from _____ to____

                        Commission File Number  0-27130

                            NETWORK APPLIANCE, INC.
             (Exact name of registrant as specified in its charter)

           California                                             77-0307520
- ----------------------------------------------------------------------------
(State or other jurisdiction of                  IRS Employer Identification
incorporation or organization)


2770 San Tomas Expressway, Santa Clara, California                     95051
- ----------------------------------------------------------------------------
(Address of principal executive offices)                           (zip code)

Registrant's telephone number, including area code            (408) 367-3000
- ----------------------------------------------------------------------------

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

Yes     X      .     No           .
   ------------        -----------

       Indicate the number of shares outstanding of the issuer's class of
common stock, as of the latest practicable date.

                                                    Outstanding at
             Class                                 January 24, 1997
             -----                                 ----------------

        Common Stock                                  16,250,561






<PAGE>   2

                            NETWORK APPLIANCE, INC.
                                   FORM 10-Q

                               TABLE OF CONTENTS


<TABLE>
<CAPTION>
                                                                                              PAGE NO.
                                                                                              --------
<S>       <C>                                                                                 <C>

PART I.    FINANCIAL INFORMATION


Item 1.          Condensed Consolidated Financial Statements

                 Condensed Consolidated Balance Sheets as of January 24, 1997
                 and April 30, 1996-------------------------------------------------------        3

                 Condensed Consolidated Statements of Income for the three and
                 nine-month periods ended January 24, 1997 and January 26, 1996-----------      4-5

                 Condensed Consolidated Statements of Cash Flows for the nine-month
                 periods ended January 24, 1997 and January 26, 1996----------------------        6

                 Notes to Condensed Consolidated Financial Statements---------------------      7-8


Item 2.          Management's Discussion and Analysis of Financial Condition
                 and Results of Operations------------------------------------------------     9-12



PART II.   OTHER INFORMATION


Item 1.          Legal Proceedings--------------------------------------------------------       13


Item 2.          Changes in Securities----------------------------------------------------       13


Item 3.          Defaults Upon Senior Securities------------------------------------------       13


Item 4.          Submission of Matters to a Vote of Securityholders-----------------------       13


Item 5.          Other Information--------------------------------------------------------       13


Item 6.          Exhibits and Reports on Form 8-K-----------------------------------------       13


SIGNATURES--------------------------------------------------------------------------------       14
</TABLE>








                                       2


<PAGE>   3


PART 1.     FINANCIAL INFORMATION


ITEM 1.     FINANCIAL STATEMENTS


                            NETWORK APPLIANCE, INC.
                     CONDENSED CONSOLIDATED BALANCE SHEETS
                                 (IN THOUSANDS)




<TABLE>
<CAPTION>
                                                                January 24, 1997   April 30, 1996
                                                               ----------------   ----------------
                                                                   (Unaudited)
<S>                                                            <C>                <C>
                         ASSETS

CURRENT ASSETS:
    Cash and cash equivalents ..............................   $         20,938   $         24,637                        
    Short-term investments .................................              6,850              2,982
    Accounts receivable, net ...............................             12,336              5,330
    Inventories ............................................              9,585              4,825
    Prepaid expenses and other .............................              3,298              2,628
                                                               ----------------   ----------------
        Total current assets ...............................             53,007             40,402

PROPERTY AND EQUIPMENT, net ................................              6,148              4,849
OTHER ASSETS ...............................................                202                198
                                                               ----------------   ----------------
                                                               $         59,357   $         45,449
                                                               ================   ================



          LIABILITIES AND SHAREHOLDERS' EQUITY


CURRENT LIABILITIES:
    Current portion of long-term obligations ...............   $             21   $             19
    Accounts payable .......................................              4,991              2,099
    Income taxes payable ...................................                708                500
    Accrued compensation and related benefits ..............              3,131              2,015
    Other accrued liabilities ..............................              2,178              1,110
    Deferred revenue .......................................              1,804                378
                                                               ----------------   ----------------
        Total current liabilities ..........................             12,833              6,121
                                                               ----------------   ----------------
LONG-TERM OBLIGATIONS ......................................                233                299
                                                               ----------------   ----------------

SHAREHOLDERS' EQUITY:
    Common stock ...........................................             41,495             39,903
    Retained earnings (Accumulated deficit) ................              4,796               (874)
                                                               ----------------   ----------------
                                                                         46,291             39,029
                                                               ----------------   ----------------
                                                               $         59,357   $         45,449
                                                               ================   ================
</TABLE>









     See accompanying notes to condensed consolidated financial statements.


                                       3

<PAGE>   4

                            NETWORK APPLIANCE, INC.
                  CONDENSED CONSOLIDATED STATEMENTS OF INCOME
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
                                  (UNAUDITED)


<TABLE>
<CAPTION>
                                                                Three Months Ended
                                                      --------------------------------------
                                                      January 24, 1997      January 26, 1996
                                                      ----------------      ----------------
<S>                                                   <C>                   <C>
NET SALES.......................................      $         24,845      $         13,018
COST OF SALES...................................                10,116                 5,749
                                                      ----------------      ----------------
GROSS MARGIN....................................                14,729                 7,269
                                                      ----------------      ----------------

OPERATING EXPENSES:
    Sales and marketing.........................                 6,438                 3,373
    Research and development....................                 2,283                 1,361
    General and administrative..................                 1,049                   765
                                                      ----------------      ----------------
        Total operating expenses................                 9,770                 5,499
                                                      ----------------      ----------------
INCOME FROM OPERATIONS..........................                 4,959                 1,770

OTHER INCOME, net...............................                   241                   246
                                                      ----------------      ----------------

INCOME BEFORE PROVISION FOR INCOME TAXES........                 5,200                 2,016

PROVISION FOR INCOME TAXES......................                 1,820                    --
                                                      ----------------      ----------------

NET INCOME......................................      $          3,380      $          2,016
                                                      ================      ================

NET INCOME PER SHARE............................      $           0.19      $           0.12
                                                      ================      ================
WEIGHTED AVERAGE COMMON AND
    COMMON EQUIVALENT SHARES....................                17,730                16,581
                                                      ================      ================
</TABLE>









     See accompanying notes to condensed consolidated financial statements.


                                       4

<PAGE>   5

                            NETWORK APPLIANCE, INC.
                  CONDENSED CONSOLIDATED STATEMENTS OF INCOME
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
                                  (UNAUDITED)





<TABLE>
<CAPTION>
                                                                        Nine Months Ended
                                                               ------------------------------------
                                                               January 24, 1997    January 26, 1996
                                                               ----------------    ----------------
<S>                                                            <C>                 <C>
NET SALES .................................................    $         64,353    $         30,621
COST OF SALES .............................................              26,292              13,814
                                                               ----------------    ----------------
GROSS MARGIN ..............................................              38,061              16,807
                                                               ----------------    ----------------

OPERATING EXPENSES:
    Sales and marketing ...................................              16,644               8,483
    Research and development ..............................               5,986               3,101
    General and administrative ............................               3,201               1,819
    Litigation settlement .................................               4,300                  --
                                                                ---------------    ----------------
        Total operating expenses ..........................              30,131              13,403
                                                                ---------------    ----------------
INCOME FROM OPERATIONS ....................................               7,930               3,404

OTHER INCOME, net .........................................                 793                 237
                                                                ---------------    ----------------
INCOME BEFORE PROVISION FOR INCOME TAXES ..................               8,723               3,641

PROVISION FOR INCOME TAXES ................................               3,053                  --

NET INCOME ................................................    $          5,670    $          3,641
                                                               ================    ================

NET INCOME PER SHARE ......................................    $           0.32    $           0.24
                                                               ================    ================
WEIGHTED AVERAGE COMMON AND
    COMMON EQUIVALENT SHARES ..............................              17,636              15,389
                                                               ================    ================
</TABLE>










     See accompanying notes to condensed consolidated financial statements.


                                       5

<PAGE>   6
                            NETWORK APPLIANCE, INC.
                CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
                                  (UNAUDITED)





<TABLE>
<CAPTION>
                                                                       Nine Months Ended
                                                                -----------------------------------
                                                                January 24, 1997   January 26, 1996
                                                                ----------------   ----------------
<S>                                                             <C>                <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income .............................................      $          5,670   $          3,641
  Adjustments to reconcile net income to net cash
    provided by operating activities:
    Depreciation .........................................                 1,907                809
    Amortization of deferred stock compensation ..........                    60                 99
    Provision for doubtful accounts ......................                    --                110
    Deferred rent ........................................                   (52)                80
    Changes in assets and liabilities:
      Accounts receivable ................................                (7,006)            (1,189)
      Inventories ........................................                (4,760)            (1,183)
      Prepaid expenses and other .........................                  (674)              (436)
      Accounts payable and income taxes payable ..........                 3,100               (724)
      Accrued compensation and related benefits ..........                 1,116                278
      Other accrued liabilities ..........................                 1,068                698
      Deferred revenue ...................................                 1,426                267
                                                                ----------------   ----------------
        Net cash provided by operating activities ........                 1,855              2,450
                                                                ----------------   ----------------

CASH FLOWS FROM INVESTING ACTIVITIES:
  Purchases of short-term investments ....................               (13,200)                --
  Redemptions of short-term investments ..................                 9,332                 --
  Purchases of property and equipment ....................                (3,206)            (2,219)
                                                                ----------------   ----------------
      Net cash used in investing activities ..............                (7,074)            (2,219)
                                                                ----------------   ----------------

CASH FLOWS FROM FINANCING ACTIVITIES:
  Proceeds from issuance of long-term debt ...............                    --              1,250
  Repayments of long-term obligations ....................                   (12)            (1,274)
  Proceeds from sale of common stock, net ................                 1,532             26,643
                                                                ----------------   ----------------
      Net cash provided by financing activities ..........                 1,520             26,619
                                                                ----------------   ----------------

NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS .....                (3,699)            26,850


CASH AND CASH EQUIVALENTS:
  Beginning of period ....................................                24,637              1,791
                                                                ----------------   ----------------
  End of period ..........................................      $         20,938   $         28,641
                                                                ================   ================
</TABLE>





     See accompanying notes to condensed consolidated financial statements.

                                       6

<PAGE>   7
                            NETWORK APPLIANCE, INC.

              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                  (UNAUDITED)




1.       CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

         The accompanying condensed consolidated financial statements have been
prepared by Network Appliance, Inc. (the Company) without audit and reflect all
adjustments which are, in the opinion of management, necessary for a fair
presentation of the financial position and the results of operations of the
Company for the interim periods.  The statements have been prepared in
accordance with the regulations of the Securities and Exchange Commission
(SEC).  Accordingly, they do not include all information and footnotes required
by generally accepted accounting principles.  The results of operations for the
three and nine-month periods ended January 24, 1997 are not necessarily
indicative of the operating results to be expected for the full fiscal year or
future operating periods.  The information included in this report should be
read in conjunction with the audited consolidated financial statements and
notes thereto for the fiscal year ended April 30, 1996 and the risk factors as
set forth in the Company's Annual Report on Form 10-K, including, without
limitation, risks relating to history of operating losses, fluctuating
operating results, dependence on new products, rapid technological change,
dependence on growth in the network file server market, expansion of
international operations, product concentration, changing product mix,
competition, recent management additions, management of expanding operations,
dependence on high-quality components, dependence on proprietary technology,
intellectual property rights, dependence on key personnel, volatility of stock
price, shares eligible for future sale, concentration of stock ownership,
effect of certain anti-takeover provisions and dilution.  Any party interested
in reviewing these publicly available documents should write to the SEC or the
Chief Financial Officer of the Company.


2.       INVENTORIES

         Inventories consist of the following (in thousands):



<TABLE>
<CAPTION>
                                                           January 24, 1997       April 30, 1996
                                                           ----------------      ----------------
                         <S>                               <C>                   <C>
                         Purchased components ..........   $          6,645      $          2,161
                         Work in process ...............                734                   970
                         Finished goods ................              2,206                 1,694
                                                           ----------------      ----------------
                                                           $          9,585      $          4,825
                                                           ================      ================
</TABLE>



3.       NET INCOME PER SHARE

         Net income per share is computed using the weighted average number of
common and common equivalent shares outstanding during the period.  Common
equivalent shares include preferred stock (using the "if converted" method) and
stock options and warrants (using the treasury stock method).  Common
equivalent shares are excluded from the computation if their effect is
anti-dilutive.





                                       7

<PAGE>   8




4.       LITIGATION SETTLEMENT

         In July 1994, the Company and certain of its former employees were
named as defendants in a lawsuit which alleged that one of the Company's
founders, who left the Company in March 1995, misappropriated confidential
information prior to the Company's founding in April 1992.

         In August 1996, the Company reached a settlement with the plaintiffs
which resulted in a charge to earnings of $4.3 million in the first quarter of
fiscal 1997, which included a $3.5 million payment to the plaintiffs and
$800,000 of legal fees.  The payment released the Company from all liabilities
associated with the case.  The Company has no future obligations to the
plaintiffs.  The Company denies any wrongdoing on its part or on the part of
the founder.




















                                       8

<PAGE>   9

I
TEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
         RESULTS OF OPERATIONS

OVERVIEW

         Network Appliance, Inc. was incorporated in April 1992 to design,
manufacture, market and support network data storage appliances.  In September
1995, the Company introduced the NetApp F330, a rack-mounted, Pentium and PCI
bus-based filer, and in January 1996, the Company introduced the NetApp F220, a
rack-mounted, Pentium and PCI bus-based filer designed for workgroup and LAN
environments.  In May 1996, the Company introduced the NetApp F540, an
enterprise-class file server appliance.  In October 1996, the Company first
shipped multiprotocol systems and also initiated the licensing of multiprotocol
software to pre-existing customers.  The Company's filer products combine
specialized proprietary software and state-of-the-art industry standard
hardware to provide a unique solution for the NFS server market.

RESULTS OF OPERATIONS

         The following table sets forth certain consolidated statements of
income data as a percentage of net sales for the periods indicated.



<TABLE>
<CAPTION>
                                                               THREE MONTHS ENDED          NINE MONTHS ENDED
                                                             ----------------------     -----------------------
                                                            JANUARY 24,   JANUARY 26,   JANUARY 24,    JANUARY 26,
                                                                1997         1996          1997          1996
                                                             ---------    ---------     ---------     ---------
 <S>                                                         <C>          <C>           <C>           <C>
 Net sales...............................................        100.0%       100.0%        100.0%        100.0%
 Cost of sales...........................................         40.7         44.2          40.9          45.1
                                                             ---------    ---------     ---------     ---------
 Gross margin............................................         59.3         55.8          59.1          54.9
 Operating expenses:
   Sales and marketing...................................         25.9         25.9          25.8          27.7
   Research and development..............................          9.2         10.4           9.3          10.1
   General and administrative............................          4.2          5.9           5.0           6.0
   Litigation settlement.................................           --           --           6.7            --
                                                             ---------    ---------     ---------     ---------
           Total operating  expenses.....................         39.3         42.2          46.8          43.8
                                                             ---------    ---------     ---------     ---------
 Income from operations..................................         20.0         13.6          12.3          11.1
 Other income, net.......................................           .9          1.9           1.2            .8
                                                             ---------    ---------     ---------     ---------
 Income before provision for income taxes................         20.9         15.5          13.5          11.9
 Provision for income taxes..............................          7.3           --           4.7            --
                                                             ---------    ---------     ---------     ---------
 Net income..............................................         13.6%        15.5%          8.8%         11.9%
                                                             =========    =========     =========     =========
</TABLE>


         Net Sales.  Net sales increased by 90.9% from $13.0 million for the
three months ended January 26, 1996 to $24.8 million for the three months ended
January 24, 1997.  For the nine-month period ended January 24, 1997, net sales
of $64.4 million reflect an increase of 110.2% over the comparable period of
fiscal 1996.  The increase in net sales in these periods resulted primarily from
the Company's continuing expansion of its domestic direct sales force, as well
as the growth of its domestic indirect sales channel and international direct
sales channel, increased market acceptance of the Company's products, the
introduction of the NetApp F540, as well as the introduction of multiprotocol
systems and the licensing of software to pre-existing customers.

         Gross Margin.  Gross margin increased from 55.8% for the three months
ended January 26, 1996 to 59.3% for the three months ended January 24, 1997.
Gross margin for the nine months ended January 24, 1997 was 59.1%, compared to
54.9% for the comparable period of fiscal 1996.  This increase in gross margin
was primarily attributable to lower costs of key components and manufacturing
efficiencies achieved during the three and nine-month periods ended January 24,
1997, both of which were related to the significant increase in production
volume.  Also, during the quarter ended January 24, 1997, the Company
recognized software licensing revenue, which bears higher margins than system
sales.  These factors offset the effect of increased sales of highly configured
systems during these periods which generally generate lower gross margins per
system due to greater disk drive and memory content.





                                       9

<PAGE>   10
         The Company's gross margin has been and will continue to be affected
by a variety of factors, including competition, product configuration, direct
versus indirect sales, the mix and average selling prices of products,
including software licensing, new product introductions and enhancements and
the cost of components and manufacturing labor. In particular, the Company's
gross margin varies based upon the configuration of systems that are sold and
whether they are sold directly or through indirect channels. The Company offers
products in both highly configured systems, as well as in minimally configured
systems. Typically, highly configured systems generate lower overall gross
margins due to greater disk drive and memory content.  Highly configured
systems are generally sold directly to end users.

         Sales and Marketing.  Sales and marketing expenses consist primarily
of salaries, commissions, advertising and promotional expenses and customer
service and support costs. Sales and marketing expenses increased 90.9% from
$3.4 million for the three months ended January 26, 1996 to $6.4 million for
the three months ended January 24, 1997.  For the nine months ended January 24,
1997, sales and marketing expenses of $16.6 million reflect an increase of
96.2% over the comparable period of fiscal 1996.  These expenses were 25.9% of
net sales for both the three months ended January 24, 1997 and the three months
ended January 26, 1996  and were 25.8% and 27.7%, respectively, of net sales
for the nine months then ended.  The increase in absolute dollars was primarily
related to the expansion of the Company's sales and marketing organization,
particularly increases in the domestic and international sales forces, and
increased commission expenses related to higher sales volumes.  The Company
expects to continue to increase its sales and marketing expenses in an effort
to expand domestic and international markets, introduce new products, and
establish and expand new distribution channels.

         Research and Development.  Research and development expenses consist
primarily of salaries and benefits, prototype expenses, and fees paid to
outside consultants. Research and development expenses increased 67.7% from
$1.4 million for the three months ended January 26, 1996 to $2.3 million for
the three months ended January 24, 1997. These expenses represented 9.2% and
10.4% of net sales for the quarters ended January 24, 1997 and January 26,
1996, respectively.  For the nine month periods, research and development
expenses increased 93.0% from $3.1 million in fiscal 1996 to $6.0 million in
fiscal 1997 and represented 10.1% and 9.3% of net sales, respectively, for
those periods.  These expenses increased in absolute dollars primarily as a
result of increased headcount, consulting fees, prototyping expenses associated
with the development of new products and ongoing support of current and future
product development and enhancement efforts. The Company believes that
significant investments in research and development will be required to remain
competitive and expects that such expenditures will continue to increase in
absolute dollars. To date, no software development costs have been capitalized
as amounts that qualify for capitalization have been immaterial.

         General and Administrative.  General and administrative expenses were
$1.0 million in the three months ended January 24, 1997, compared to $0.8
million in the three months ended January 26, 1996.  These expenses represented
4.2% and 5.9%, respectively, of net sales for such periods.  For the nine-month
periods, general and administrative expenses increased 76.0% from $1.8 million
in fiscal 1996 to $3.2 million in fiscal 1997 and represented 6.0% and 5.0% of
net sales, respectively, for those periods.  Increases in general and
administrative expenses related primarily to certain litigation expenses,
increased staffing, professional fees, facilities expansion and related
occupancy costs and information system investments necessary to manage and
support the Company's growth. The Company believes that its general and
administrative expenses will increase as the Company continues to build its
infrastructure.

         Litigation Settlement.  In July 1994, the Company and certain of its
former employees were named as defendants in a lawsuit which alleged that one
of the Company's founders, who left the Company in March 1995, misappropriated
confidential information prior to the Company's founding in April 1992.  In
August 1996, the Company reached a settlement with the plaintiffs which
resulted in a charge to earnings of $4.3 million in the quarter ended July 26,
1996, which included a $3.5 million payment to the plaintiffs and $0.8 million
of legal fees.  The payment released the Company from all liabilities
associated with the case.  The Company has no future obligations to the
plaintiffs.





                                       10

<PAGE>   11
         Other Income, net.  Other income, net, was $0.2 million for both the
three months ended January 24, 1997 and January 26, 1996.  During the nine
months ended January 24, 1997 and January 26, 1996, other income, net, was $0.8
million and $0.2 million, respectively. In each of these periods, other income,
net, represented less than 2% of net sales.  Other income, net, increased in
the nine-month period ended January 24, 1997 compared to the corresponding
period of the prior year due primarily to interest income earned on the net
proceeds of  $25.7 million from the Company's initial public offering that was
completed in November 1995.

         Provision for Income Taxes.  In fiscal 1996, the Company's federal and
state income tax liabilities were offset by the realization of a portion of its
net deferred tax assets, and accordingly no provision for income taxes was
incurred in the three and nine months ended January 26, 1996.  The Company has
recorded a provision for income taxes in the three and nine months ended
January 24, 1997 utilizing an income tax rate of 35%, which is the anticipated
effective tax rate for fiscal 1997.

         The Company's quarterly operating results have in the past varied and
may in the future vary significantly depending on a number of factors,
including the level of competition; the size and timing of significant orders;
product configuration and mix; market acceptance of new products and product
enhancements; new product announcements or introductions by the Company or its
competitors; deferrals of customer orders in anticipation of new products or
product enhancements; changes in pricing by the Company or its competitors; the
ability of the Company to develop, introduce and market new products and
product enhancements on a timely basis; hardware component costs; supply
constraints; the Company's success in expanding its sales and marketing
programs; technological changes in the network file server market; the mix of
sales among the Company's sales channels; levels of expenditure on research and
development; changes in Company strategy; personnel changes; the Company's
ability to successfully expand international operations; general economic
trends and other factors. Although the Company has not experienced seasonality
in the past, because of the significant seasonal effects experienced within the
industry and the Company's goal to expand international sales, there can be no
assurance that the Company's future operating results will not be adversely
affected by seasonality.

          Sales for any future quarter are not predictable with any significant
degree of certainty. The Company generally operates with limited order backlog
because its products typically are shipped shortly after orders are received.
As a result, product sales in any quarter are generally dependent on orders
booked and shipped in that quarter. Product sales are also difficult to
forecast because the network file server market is rapidly evolving and the
Company's sales cycle varies substantially from customer to customer. A
significant portion of the Company's revenues in any quarter may be derived
from sales to a limited number of customers. Any significant deferral of these
sales could have a material adverse effect on the Company's results of
operations in any particular quarter; and to the extent that significant sales
occur earlier than expected, operating results for subsequent quarters may be
adversely affected. The Company's expense levels are based, in part, on its
expectations as to future sales. As a result, if sales levels are below
expectations, net income may be disproportionately affected.  Although the
Company has experienced significant revenue growth in recent periods, the
Company does not believe such growth is indicative of future operating results.
The Company believes that period-to-period comparisons of its results of
operations are not necessarily meaningful and should not be relied upon as an
indicator of future performance. Due to all of the foregoing factors, it is
possible that in some future quarter the Company's operating results may be
below the expectations of public market analysts and investors. In such event,
the price of the Company's Common Stock would likely be materially adversely
affected.

         This Form 10-Q contains forward-looking statements about future
results which are subject to risks and uncertainties.  Network Appliance's
actual results may differ significantly from the results discussed in the
forward-looking statements.  The Company is subject to a variety of other
additional risk factors, more fully described in the Company's Annual Report on
Form 10-K filed with the Securities and Exchange Commission.





                                       11

<PAGE>   12


LIQUIDITY AND CAPITAL RESOURCES

         As of January 24, 1997, the Company's liquidity primarily consisted of
cash and cash equivalents of $20.9 million and short-term investments of $6.9
million.

         The Company generated cash from operating activities totaling $1.9
million in the nine months ended January 24, 1997 and $2.5 million in the nine
months ended January 26, 1996.  Net cash provided by operating activities in
the nine months ended January 24, 1997 was primarily attributable to net income
of $5.7 million during that period (which included a $4.3 million cash charge
to settle a lawsuit) and to increases in accounts payable and income taxes
payable, accrued compensation and related benefits, other accrued liabilities
and deferred revenue, partially offset by increases in accounts receivable and
inventories.  Net cash provided by operating activities in the nine months
ended January 26, 1996 principally related to net income of $3.6 million during
that period, offset by increases in accounts receivable and inventories.

         The Company used $3.2 million and $2.2 million of cash during the nine
months ended January 24, 1997 and January 26, 1996, respectively, to purchase
property and equipment.  In addition, the Company used $3.9 million in the nine
months ended January 24, 1997 for net purchases of short-term investments.
Financing activities provided $1.5 million and $26.6 million during the nine
months ended January 24, 1997 and January 26, 1996, respectively, due primarily
to the sale of common stock in the first nine months of fiscal 1997 and to
proceeds from the Company's initial public offering in fiscal 1996.

         The Company currently has no significant capital commitments other
than commitments under operating and capital leases.  The Company believes that
its existing liquidity will satisfy the Company's projected working capital and
other cash requirements for the next twelve months.

















                                       12

<PAGE>   13

P
ART II.         OTHER INFORMATION


ITEM 1.          LEGAL PROCEEDINGS
                 None


ITEM 2.          CHANGES IN SECURITIES
                 None


ITEM 3.          DEFAULTS UPON SENIOR SECURITIES
                 None


ITEM 4.          SUBMISSION OF MATTERS TO A VOTE OF SECURITYHOLDERS
                 None


ITEM 5.          OTHER INFORMATION

                          During the quarter ended January 24, 1997, Jeffry R.
                 Allen joined the Company as its Vice President of Finance and
                 Operations and Chief Financial Officer.  He was formerly
                 Senior Vice President of Operations at Bay Networks.


ITEM 6.          EXHIBITS AND REPORTS ON FORM 8-K

                 (a)  Exhibits

                 10.1  Facility sublease, dated August 9, 1996, by and between
                       S3, Inc. and the Registrant

                 27.1  Financial Data Schedule

                 (b)  Reports on Form 8-K

                  None















                                       13

<PAGE>   14

                                   SIGNATURES



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





                                          NETWORK APPLIANCE, INC.
                                          (Registrant)




                                          /s/  Jeffry R. Allen
                                          -----------------------------------
Date:    March 7, 1997            By:     Jeffry R. Allen
                                          Vice President Finance and
                                          Operations, Chief Financial Officer
                                          (Principal Financial Officer)
























                                       14





<PAGE>   1


                                                                EXHIBIT 10.1


                                    SUBLEASE
                2770 and 2820 San Tomas Expressway, Santa Clara



         THIS SUBLEASE, dated August 9, 1996 for reference purposes only (the
"Sublease Date"), is entered into by and between S3 INCORPORATED, a Delaware
corporation ("Sublandlord"), and NETWORK APPLIANCE, INC., a California
corporation ("Subtenant").

                                    RECITALS

         A.      Sublandlord presently leases certain premises (the "2770
Premises") consisting of approximately 47,432 square feet of space located in
that certain building commonly known as 2770 San Tomas Expressway, Santa Clara,
California (the "2770 Building") from McCandless - San Tomas No. 2, a
California general partnership (the "2770 Master Landlord") pursuant to that
certain Office Lease dated May 13, 1993, and amended by that certain First
Amendment to Lease dated September 9, 1993 and that certain Second Amendment to
Lease dated March 30, 1994 (collectively, the "2770 Master Lease").  An
accurate and complete copy of the 2770 Master Lease is attached hereto as
Exhibit A.

         B.      Sublandlord presently leases certain premises (the "2820
Premises") consisting of approximately 47,432 square feet of space located in
that certain building commonly known as 2820 San Tomas Expressway, Santa Clara,
California (the "2820 Building")
 from McCandless - San Tomas No. 1, a
California general partnership (the "2820 Master Landlord") pursuant to that
certain Office Lease dated March 30, 1994, and amended by that certain First
Amendment to Lease dated April 10, 1995, that certain Second Amendment to Lease
dated April 10, 1995 and that certain Third Amendment to Lease dated January
26, 1996 (collectively, the "2820 Master Lease").  An accurate and complete
copy of the 2820 Master Lease is attached hereto as Exhibit B.

         C.      The 2770 Premises and the 2820 Premises are sometimes referred
to collectively herein as the "Premises."  The parties agree that the Premises
contain ninety-four thousand eight hundred sixty-four (94,864) square feet.
The 2770 Master Landlord and the 2820 Master Landlord are sometimes referred to
collectively as the "Master Landlords" and individually as a "Master Landlord."
The 2770 Master Lease and the 2820 Master Lease are sometimes referred to
collectively herein as the "Master Leases."  Capitalized terms not otherwise
defined herein and defined in the Master Leases shall have the same meaning as
they have in the Master Leases.

         D.      Sublandlord desires to sublease to Subtenant, and Subtenant
desires to Sublease from Sublandlord, the Premises, pursuant to the terms and
provisions hereof.

         NOW, THEREFORE, in consideration of the covenants and conditions
contained herein, Sublandlord and Subtenant covenant and agree as follows:


                                     1.

<PAGE>   2

                                   AGREEMENT

         1.      DEMISE.  Sublandlord hereby leases to Subtenant, and Subtenant
hereby leases from Sublandlord, the Premises, upon and subject to the terms and
conditions set forth herein.

         2.      TERM.  The term of this Sublease ("Term") shall commence on
the later of (i) January 2, 1997 or (ii) the date on which possession of the
Premises is delivered to Subtenant in accordance with Section 8(c) (the
"Commencement Date") and shall expire, unless sooner terminated pursuant to the
terms of the Master Leases, on May 31, 2000 (the "Expiration Date").  Subtenant
and Subtenant's employees and agents, upon prior notice to Sublandlord, shall
have the right from and after the date of execution of this Sublease to enter
the Premises for the purpose of performing Subtenant's space planning
activities, on condition that Subtenant's entry shall not interfere with
Sublandlord's activities in the Premises.  Any such early entry shall be on all
of the terms and conditions of this Sublease, except that Subtenant shall not
be required to pay Rent (as defined below) during any period of early entry.

         3.      RENT.  The rent payable by Subtenant for the Premises shall
consist of base rental ("Base Rent") plus certain additional rental
("Additional Rent"), all as provided below. Base Rent, Additional Rent, and any
other charges due hereunder are hereinafter referred to collectively as "Rent."
In the event the first day of Subtenant's obligation to pay Base Rent hereunder
shall not be the first day of a calendar month or the last day of the Term is
not the last day of a calendar month, the Rent shall be appropriately prorated
based on a thirty (30) day month.

                 (a)      Commencing on the date which is forty-five (45) days
after the Commencement Date and continuing throughout the Term of this Sublease
(the "Rent Commencement Date"), Subtenant shall pay to Sublandlord Base Rent
for the Premises in the amount of one hundred thirteen thousand eight hundred
thirty-seven dollars ($113,837) per month.

                 (b)      Commencing on the Rent Commencement Date (except for
utility costs, Subtenant's liability for which shall commence on the
Commencement Date), Subtenant shall also pay, in addition to Base Rent,
Additional Rent in the amount of tenant's share of direct expenses (as such is
described in paragraphs 4 and 5 of the 2770 Master Lease and paragraphs 4 and 5
of the 2820 Master Lease) and any other amounts of whatever nature due to
Master Landlords from Sublandlord pursuant to the Master Leases.

                 (c)      Base Rent shall be payable to Sublandlord, in
advance, without prior notice, demand, or offset except as specifically
provided herein, on or before the first day of each calendar month during the
term hereof.  Additional Rent shall be payable to Sublandlord five (5) business
days prior to the date such amounts are due under the Master Leases or upon
demand by Sublandlord (in the event of a demand for sooner payment by a Master
Landlord).  Notwithstanding the foregoing, Subtenant shall not be obligated to
pay any amount due under any Master Lease which represents a penalty, late
charge or interest on any late payment by Sublandlord of "basic rent" or direct
expenses under a Master Lease, unless Subtenant is in default of its
obligations to pay Rent under this Sublease.  All Base Rent and any additional
sums payable to Sublandlord hereunder shall be paid to Sublandlord at the
address specified for notice to





                                       2.

<PAGE>   3
Sublandlord in Section 5(b)(iii) below.  To the extent that Additional Rent (or
Subtenant's share of direct expenses) is payable on an estimated basis pursuant
to a Master Lease, the Additional Rent due hereunder shall be adjusted between
the parties (with appropriate reimbursements or additional payments) when the
actual Additional Rent (or Subtenant's share of direct expenses) due under such
Master Lease has been determined.

         4.      MASTER LEASES.  This Sublease shall be subject and subordinate
to all of the terms and provisions of the Master Leases.  Except for payments
of "basic rent" (which payments shall be made by Sublandlord), Subtenant hereby
assumes and agrees to perform for Sublandlord's benefit, during the term of
this Sublease, all of Sublandlord's obligations under the Master Leases,
including without limitation payment of all Additional Rent (or Subtenant's
share of direct expenses) due under the Master Leases (hereinafter the "Assumed
Obligations").

         5.      INCORPORATION OF TERMS OF MASTER LEASES.

                 (a)      Except as provided below, all of the terms and
provisions of the Master Leases are incorporated into and made a part of this
Sublease and the rights and obligations of the parties under the Master Leases
are hereby imposed upon the parties hereto with respect to the Premises, the
Sublandlord being substituted for the "Landlord" in each Master Lease, the
Subtenant being substituted for the "Tenant" in each Master Lease, and this
Sublease being substituted for the "Lease" in each Master Lease.
Notwithstanding the foregoing, the following provisions of the Master Leases
are not incorporated herein:

                      (i)         With respect to the 2770 Master Lease,
paragraphs 2, 3, 4(a), 4(c), 4(d), 4(e), 5(a), the second sentence of the
second paragraph of 29, 47, 51, 52 and 53 of the Office Lease dated May 13,
1993; paragraphs 2, 3, 4 and 5 of the First Amendment to Lease dated September
9, 1993; and paragraphs 1, 2, 3, 4 and 5 of the Second Amendment to Lease dated
March 30, 1994.

                      (ii)        With respect to the 2820 Master Lease,
paragraphs 2, 4(a), 4(c), 4(d), 4(e), 5(a), the second sentence of the second
paragraph of 29, 47, 52 and 53 of the Office Lease dated March 30, 1994; all
provisions of the First Amendment to Lease dated April 10, 1995; all provisions
of the Second Amendment to Lease dated April 10, 1995; and all provisions of
the Third Amendment to Lease dated January 26, 1996.

                    (iii)         Any provisions relating to any construction
obligations of "Landlord" under the Master Leases with respect to construction
which occurred or was to have occurred prior to the commencement date hereof.

                 (b)      Notwithstanding the provisions of the preceding
subparagraph, for the purposes of incorporating the terms and provisions of the
Master Leases into this Sublease, the Master Leases are hereby amended as
follows:

                      (i)         INSURANCE.  With respect to Subtenant's
insurance obligations under paragraph 11 of the 2770 Master Lease and paragraph
11 of the 2820 Master Lease,  Subtenant's





                                       3.

<PAGE>   4
policies of liability insurance shall name both Master Landlords and
Sublandlord, as additional insureds.

                      (ii)        EVENTS OF DEFAULT.  The following provisions
are added as additional events of default under paragraph 19 of the Master
Leases:  "(iv) failure of Subtenant to make any payment of Rent within two (2)
business days of when due; and (v) failure of Subtenant to renew or to maintain
in full force and effect any letter of credit required as a security deposit to
secure Subtenant's obligations hereunder."

                    (iii)         NOTICES.  The addresses specified in the
Master Leases for receipt of notices to each of the parties are deleted and
replaced with the following:

                       TO SUBLANDLORD AT:        2770 San Tomas Expressway
                                                 Santa Clara, California 95051
                                                 Attn:  Mr. George Hervey

                       TO SUBTENANT AT:          319 North Bernardo
                                                 Mountain View, California 94043
                                                 Attn:  Ms. Chris Carlton

         6.      SUBLANDLORD'S OBLIGATIONS.

                 (a)      Provided Subtenant is not in default under the terms
of this Sublease beyond any applicable cure period, Sublandlord agrees to make
timely payments of the "basic rent" due under the Master Leases to the end that
the Master Lease shall not be terminated due to the default in such payment by
Sublandlord.

                 (b)      To the extent that the provision of any services or
the performance of any maintenance or any other act (collectively "Master
Landlord Obligations") is the responsibility of a Master Landlord, Sublandlord,
upon Subtenant's request, shall make reasonable efforts to cause the relevant
Master Landlord to perform such Master Landlord Obligations; provided, however,
that in no event shall Sublandlord be liable to Subtenant for any liability,
loss or damage whatsoever in the event that a Master Landlord should fail to
perform the same, nor shall Subtenant be entitled to withhold the payment of
Rent or terminate this Sublease.  If, after receipt of written request from
Subtenant, Sublandlord shall fail or refuse to take such reasonable efforts for
the enforcement of Sublandlord's rights against the relevant Master Landlord
with respect to the Premises ("Action"), Subtenant shall have the right to take
such Action in its own name, and for that purpose and only to such extent, all
relevant rights of Sublandlord as tenant under the Master Lease are hereby
conferred upon and assigned to Subtenant, and Subtenant shall be subrogated to
such rights to the extent that the same shall apply to the Premises.  If any
Action against a Master Landlord in Subtenant's name shall be barred by reason
of lack of privity, nonassignability or otherwise, Subtenant may take such
Action in Sublandlord's name; provided that Subtenant has obtained the prior
written consent of Sublandlord, which consent shall not be unreasonably
withheld or delayed; and provided, further, that Subtenant shall indemnify,
protect, defend by counsel reasonably satisfactory to Sublandlord and hold
Sublandlord harmless from and





                                       4.

<PAGE>   5
against any and all claims, demands, actions, suits, proceedings, liabilities,
obligations, losses, damages, judgments, costs and expenses (including, without
limitation, reasonable attorneys' fees) which Sublandlord may incur or suffer
by reason of such Action.  If a default by a Master Landlord under the terms of
a Master Lease shall result in the excuse of Sublandlord from the performance
of any of its obligations to be performed under the Master Lease or result in
any reduction or abatement in the Base Rent or Additional Rent to be paid by
Sublandlord thereunder, then Subtenant shall be excused from the performance of
a corresponding obligation and/or shall be entitled to a corresponding
reduction in or abatement of the Rent to be paid by Subtenant hereunder.

                 (c)      Except as provided in this Section 6, Sublandlord
shall have no other obligations to Subtenant with respect to the Premises or
the performance of the Master Landlords' Obligations.

                 (d)      Sublandlord covenants and agrees that, without the
prior written consent of Subtenant, which consent Subtenant agrees not to
unreasonably withhold or delay, Sublandlord shall not terminate either Master
Lease or amend or otherwise modify the terms of either Master Lease.

         7.      ACKNOWLEDGMENT OF CERTAIN RIGHTS NOT GRANTED.  Subtenant
acknowledges that nothing herein shall be deemed to convey or assign to
Subtenant any "option to extend term" as set forth in paragraph 53 of the 2770
Master Lease or the "option to extend term" or "first right to lease" set forth
in paragraphs 53 or 54 of the 2820 Master Lease (collectively, the "Option
Rights").  Notwithstanding the foregoing, in the event that at any time prior
to that date five (5) business days prior to Sublandlord's deadline for
exercise of any Option Rights, Subtenant notifies Sublandlord in writing that
it has entered into a binding lease or binding letter of intent with Master
landlords covering the Premises for a term commencing immediately following the
Term of this Sublease, Sublandlord agrees that it will not exercise the Option
Rights.

         8.      ADDITIONAL PROVISIONS.  The following additional provisions
shall apply to the Sublease:

                 (a)      FIRST MONTH'S RENT.  Concurrently with Subtenant's
execution of this Sublease, Subtenant shall pay to Sublandlord the sum of one
hundred thirteen thousand eight hundred thirty-seven dollars ($113,837) as Base
Rent for the first month of this Sublease.

                 (b)      SECURITY DEPOSIT.  At least forty-five (45) days
prior to the Commencement Date, Subtenant shall deliver to Sublandlord an
irrevocable stand-by letter of credit as additional security for the full and
faithful performance by Subtenant of all of the terms, covenants and conditions
of this Sublease to be kept and performed by Subtenant (the "Letter of
Credit").  The Letter of Credit shall be in the stated amount of six hundred
thousand dollars ($600,000), shall have a maturity date not earlier than (or
shall be annually renewable for a total term expiring not earlier than) thirty
(30) days after the Expiration Date, shall be issued by a commercial lender
acceptable to Sublandlord and shall be in a form acceptable to Sublandlord.
Provided that there is then no Event of Default under this Sublease (and no
event of which Sublandlord has notified





                                       5.

<PAGE>   6
Subtenant, which event, with notice or passage of time, or both, would
constitute an Event of Default), from and after January 1, 1998, Subtenant may
reduce the stated amount of the Letter of Credit to four hundred thousand
dollars ($400,000); and provided further that there is then no Event of Default
under this Sublease (and no event of which Sublandlord has notified Subtenant,
which event, with notice or passage of time, or both, would constitute an Event
of Default), from and after January 1, 1999, Subtenant may reduce the stated
amount of the letter of Credit to two hundred fifty thousand dollars
($250,000).  If Subtenant defaults with respect to any provision of this
Sublease, including but not limited to Subtenant's obligations to pay Base Rent
or to make other payments, Sublandlord may (but shall not be required to) draw
on the Letter of Credit, and/or use, apply or retain all or any part of the
security deposit for the payment of any amount which Sublandlord may spend by
reason of Subtenant's default or to compensate Sublandlord for any other loss
or damage which Sublandlord may suffer by reason of Subtenant's default.  If
any portion of such security deposit is so used, Subtenant shall, within ten
(10) days after written demand therefor, deposit cash with Sublandlord in an
amount sufficient to restore the security deposit to its original amount; and
Subtenant's failure to do so shall be a material breach of this Sublease.
Sublandlord shall not be required to keep the cash portion of the security
deposit separate from its general funds and Subtenant shall not be entitled to
interest on such amount.  At the expiration or earlier termination of this
Sublease, the unapplied balance of the security deposit shall be returned to
Subtenant after Subtenant has vacated the Premises and Master Landlords have
returned Sublandlord's security deposit to Sublandlord pursuant to the terms of
the Master Leases.

                 (c)      POSSESSION.  Sublandlord shall deliver possession of
the Premises to Subtenant by January 2, 1996.  If for any reason Sublandlord
cannot deliver possession of the Premises to Subtenant by such date, this
Sublease shall not be void or voidable, Sublandlord shall not be liable to
Subtenant for any loss or damage on account thereof; and, in such case,
Subtenant shall not be liable for Rent until forty- five (45) days after
possession has been delivered to Subtenant.  If the Premises are not delivered
to Subtenant on or before March 1, 1997, Subtenant, as its sole remedy, may
elect to terminate this Sublease upon written notice to Sublandlord,
Sublandlord shall return the Letter of Credit and any payments made hereunder
by Subtenant to Sublandlord, and the parties shall have no further obligations
hereunder.  Sublandlord agrees to use its reasonable best efforts to keep
Subtenant apprised of the date Sublandlord will be able to deliver possession
of the Premises to Subtenant.

                 (d)      CONDITION.  The Premises shall be delivered in
"as-is" condition, broom clean, with no representations or warranties
whatsoever as to condition, except as specifically set forth in this Sublease.

                 (e)      SUBLANDLORD'S REPRESENTATIONS AND WARRANTIES.
Sublandlord represents and warrants as follows:  (i) each Master Lease is in
full force and effect and neither Sublandlord nor, to the best knowledge of
Sublandlord, either Master Landlord is in default hereunder; (ii) Sublandlord
knows of no claims or defenses or circumstances which with the passage of time
or notice or both, would lead to claims or defenses by a Master Landlord
against Sublandlord as tenant under a Master Lease; and (iii) all building
systems and subsystems in the Premises will be in good working order and repair
on the date the Premises are delivered to Sublandlord.





                                       6.

<PAGE>   7
                 (f)      BROKERS.  Each party represents to the other party
that it has not had dealings in any manner with any real estate broker, finder
or other person with respect to the Premises and the negotiations and execution
of this Sublease except for CPS and Cornish & Carey Commercial, Oncor
International (the "Brokers").  Sublandlord shall pay any fees and commissions
payable to the Brokers in connection with this Sublease.  Except as to
commissions and fees to be paid to the Brokers, each party shall indemnify and
hold harmless the other party from all damage, loss, liability and expense
(including attorneys' fees and related costs) arising our of or resulting from
any claims for commissions or fees that may or have been asserted against the
other party by any broker, finder or other person with whom Subtenant or
Sublandlord has or purportedly has dealt with in connection with the Premises
and the negotiation and execution of this Sublease.  Sublandlord shall
indemnify and hold harmless the Subtenant from all damage, loss, liability and
expense to Subtenant (including attorneys' fees and related costs) arising out
of or resulting from any claims by the Brokers for commissions or fees in
connection with this Sublease.

                 (g)      CONSENT TO SUBTENANT IMPROVEMENTS.  Sublandlord
hereby consents to the installation of the improvements to the Premises
described in Exhibit C (the "Subtenant Improvements"), subject to approval of
the Subtenant Improvements by Master Landlords.  Provided that the Subtenant
Improvements are not required to be removed by a Master Landlord pursuant to
the terms of a Master Lease, Sublandlord agrees that Subtenant shall not be
obligated, upon the expiration or earlier termination of the Term of the
Sublease, to remove the Subtenant Improvements from the Premises.

                 (h)      SIGNAGE.  Subject to any consents by Master Landlords
required by the Master Leases, Sublandlord agrees that Subtenant shall have the
right, during the Term of the Sublease, to replace Sublandlord's name on the
monument sign or any other sign associated with the Premises with the name of
Subtenant.  In connection therewith, Sublandlord agrees, at Sublandlord's
expense and prior to the Commencement Date, to remove any and all letters,
insignia and other material identifying Subtenant from the Premises.

                 (i)      USE.  Subject to any consents required by Master
Landlords required by the Master Leases, Sublandlord agrees that Subtenant
shall have the right to use the first floor of the 2820 Building for light
manufacturing purposes, in addition to the "Permitted Uses" described in the
2820 Master Lease.

         9.      EARLY TERMINATION OF MASTER LEASE.  If, without the fault of
Sublandlord or Subtenant, a Master Lease should terminate prior to the
expiration of this Sublease, neither party shall have any liability to the
other party.  To the extent that a Master Lease grants Sublandlord any
discretionary right to terminate the Master Lease, whether due to casualty,
condemnation, or otherwise, Sublandlord agrees to give Subtenant prompt written
notice of such option,  Provided that there has not theretofore occurred any
Event of Default more than twice during the term of this Sublease, and there is
not at that time existing any Event of Default or any event which with notice
or passage of time or both would constitute an Event of Default, Sublandlord
agrees that it will not exercise such option (i) unless so directed in writing
by Subtenant at any time within five business (5) days of the deadline for
exercise of such option by Sublandlord, or (ii) unless





                                       7.

<PAGE>   8
Subtenant has failed to notify Subtenant within such period of its desire to
have such Master Lease continue.

         10.     CONSENT OF A MASTER LANDLORD.  If Subtenant desires to take
any action which requires the consent of a Master Landlord pursuant to the
terms of the Master Lease, including, without limitation, making any
alterations or entering into a further sublease or assignment of this Sublease,
then, notwithstanding anything to the contrary herein, (a) Sublandlord shall
have the same rights of approval or disapproval as that Master Landlord has
under the Master Lease, (b) Subtenant shall not take any such action until it
obtains the consent of both Sublandlord and the relevant Master Landlord, (c)
Subtenant shall request that Sublandlord obtain the relevant Master Landlord's
consent on Subtenant's behalf, unless Sublandlord agrees that Subtenant may
contact Master Landlord directly with respect to the specific action for which
such Master Landlord's consent is required and (d)  Sublandlord shall not
unreasonably withhold its consent.

         11.     NO THIRD PARTY RIGHTS.  The benefit of the provisions of this
Sublease is expressly limited to Sublandlord and Subtenant and their respective
permitted successors and assigns.  Under no circumstances will any third party
be construed to have any rights as a third party beneficiary with respect to
any of said provisions; provided, however, that Master Landlords shall be
entitled to the benefit of Subtenant's assumption of Sublandlord's obligations,
as "Tenant" under the Master Leases, pursuant to Section 4 above.

         12.     CONDITION PRECEDENT.  Notwithstanding anything to the contrary
herein, this Sublease is conditioned upon Subtenant's receipt, on or before the
date that is ten (10) days after the Sublease Date of written evidence
satisfactory to Subtenant that the Master Landlords have executed and delivered
the Consent to Sublease forms attached hereto.  If such condition precedent has
not been fulfilled prior to the relevant deadline, Subtenant may terminate this
Sublease upon written notice thereof to Sublandlord within  five (5) days
thereafter, and neither party shall have any continuing obligation to the other
with respect to the Premises; provided Sublandlord shall return the Letter of
Credit and any other prepaid amounts, if previously delivered to Sublandlord,
to Subtenant.

         13.     MISCELLANEOUS.

                          (a)  SUBORDINATION.  Sublandlord agrees that
Subtenant shall be entitled to seek subordination of the Master Leases and the
rights of Subtenant thereunder pursuant to the terms of this Sublease to any to
any existing or future mortgages, deeds of trust, other security interest or
leases shall be subject to the terms of the Master Leases.

                          (b)  TIME OF ESSENCE.  It is expressly understood and
agreed that time is of the essence with respect to each and every provision of
this Sublease.

                          (c)     ENTIRE AGREEMENT.  This Sublease contains all
of the covenants, conditions and agreements between the parties concerning the
Premises, and shall supersede all prior correspondence, agreements and
understandings concerning the Premises, both oral and





                                       8.

<PAGE>   9
written.  No addition or modification of any term or provision of this Sublease
shall be effective unless set forth in writing and signed by both Sublandlord
and Subtenant.

                          (d)     CAPTIONS.  All captions and headings in this
Sublease are for the purposes of reference and convenience and shall not limit
or expand the provisions of this Sublease.

                          (e)     AUTHORITY.  Each person executing this
Sublease on behalf of a party hereto represents and warrants that he or she is
authorized and empowered to do so and to thereby bind the party on whose behalf
he or she is signing.

                          (f)     ATTORNEYS' FEES.  In the event either party
shall bring any action or proceeding for damages or for an alleged breach of
any provision of this Sublease to recover rents, or to enforce, protect or
establish any right or remedy hereunder, the prevailing party shall be entitled
to recover reasonable attorneys' fees and court costs as part of such action or
proceeding.

         IN WITNESS WHEREOF, the parties have executed this Sublease as of the
date first written above.


"SUBLANDLORD"                               "SUBTENANT"



By: /s/  George A. Hervey                   By: /s/  Chris Carlton
    -------------------------------             -------------------------------
Its:  CFO                                   Its: Vice President Human Resources
     ------------------------------              ------------------------------




                                       9.

<PAGE>   10
                              ADDENDUM TO SUBLEASE
                    BETWEEN S3 INCORPORATED, AS SUBLANDLORD,
                   AND NETWORK APPLIANCE, INC., AS SUBTENANT,
                DATED AUGUST 9, 1996 FOR REFERENCE PURPOSES ONLY
                                  RELATING TO
                2700 AND 2820 SAN TOMAS EXPRESSWAY, SANTA CLARA

         The following provisions are incorporated as provisions of the
Sublease, and, in the event of any conflict between the provisions of the
Sublease and the provisions of this Addendum, the provisions of this Addendum
shall govern and control.

12.      DEFINED TERMS.  Capitalized terms used in this Addendum without
definition have the meanings ascribed to them in the Sublease.

13.      ALTERATIONS.  Notwithstanding anything to the contrary contained or
implied in the Sublease, Subtenant agrees as follows:

         (a)     All work (the "Work") done in connection with the Subtenant
Improvements shall be performed and completed in a good and workman-like manner
and in accordance with (i) the preliminary plans and specifications prepared by
Alex L. Ingram & Associates, Inc. dated June 21, 1996 and (ii) the
specifications for the enviro-chamber shown on Exhibit B to that certain letter
agreement between Sublandlord and 2820 Master Landlord dated August 1, 1996
containing 2820 Master Landlord's consent to the Subtenant Improvements
(collectively, the "Plans and Specifications").  The Work shall be subject to
Master Landlords' final approval of construction documentation prior to
commencement of any Work.  No Work shall be done which is not described in the
Plans and Specifications without the prior written consent of the Master
Landlords.  Prior to commencing any Work or receiving any materials in
connection therewith, Subtenant shall give Sublandlord not less than fifteen
(15) days notice to enable Subtenant to notify Master Landlords so that they
may post a notice of nonresponsibility.

         (b)     The Work shall be performed by a general contractor or such
other contractors as have been approved in writing by Master Landlords prior to
commencement of any Work.

         (c)     All work shall be done pursuant to appropriate building
permits and in accordance with applicable governmental laws and regulations.
Subtenant shall be solely responsible for obtaining and satisfying such
permits, laws and regulations.

         (d)     All costs and expenses incurred in connection with the Work
shall be at the sole expense of Subtenant.

         (e)     Subtenant shall indemnify, defend and hold harmless
Sublandlord and its agents, officers and directors, from and against all costs,
expenses, claims, damages and liability (including but not limited to
reasonable attorneys' fees) arising from (i) the acts or omissions of Subtenant
or its contractors or subcontractors in performing the Work, (ii) the failure
of Subtenant to abide by the terms of this Addendum, (iii) the design,
specifications or material utilized in the





                                      10.

<PAGE>   11
Work, and (iv) any damages to the premises of the building in which the
premises are located (including roof) arising from the Work.  The obligation of
Subtenant hereunder shall survive the completion of the Work.  Subtenant agrees
to name Master Landlords as additional insured on Subtenant's certificate of
liability and certificate of workman's compensation insurance.

         (f)     In the event that a Master Landlord shall require Sublandlord
to take any or all of such actions prior to termination of the Master Leases,
Subtenant shall be obligated to do the following, at its sole expense, (i)
restore the carpeting (with new carpet) in all areas of the premises where
carpeting was removed in connection with the Work; (ii) restore the loading
dock area to its condition existing prior to commencement of the Work; and
(iii) remove the enviro-chamber and restore all areas affected by the
installation of the enviro-chamber to the condition existing prior to the
commencement of the Work.  Such restoration shall be completed by no later than
the last date of the term of the Master Leases.

         IN WITNESS WHEREOF, the parties have executed this Addendum as of the
Sublease Date.


"SUBLANDLORD"                              "SUBTENANT"

S3 INCORPORATED                            NETWORK APPLIANCE, INC.



By  /s/ George A. Hervey                   By  /s/ Chris Carlton
   --------------------------------           ----------------------------------

Title  CFO                                 Title  Vice President Human Resources
      -----------------------------              -------------------------------




                                      11.



<TABLE> <S> <C>

                                                    

<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          APR-25-1997
<PERIOD-START>                             MAY-01-1996
<PERIOD-END>                               JAN-24-1997
<CASH>                                          20,938
<SECURITIES>                                     6,850
<RECEIVABLES>                                   12,336
<ALLOWANCES>                                         0
<INVENTORY>                                      9,585
<CURRENT-ASSETS>                                53,007
<PP&E>                                           6,148
<DEPRECIATION>                                       0
<TOTAL-ASSETS>                                  59,357
<CURRENT-LIABILITIES>                           12,833
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        41,495
<OTHER-SE>                                       4,796
<TOTAL-LIABILITY-AND-EQUITY>                    59,357
<SALES>                                         64,353
<TOTAL-REVENUES>                                64,353
<CGS>                                           26,292
<TOTAL-COSTS>                                   26,292
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  8,723
<INCOME-TAX>                                     3,053
<INCOME-CONTINUING>                              5,670
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     5,670
<EPS-PRIMARY>                                      .32
<EPS-DILUTED>                                        0
        

</TABLE>