Exhibit 32.2
CERTIFICATION OF CHIEF FINANCIAL OFFICER
PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
I, Steven J. Gomo, certify, pursuant to 18 U.S.C. Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Network
Appliance, Inc., on Form 10-Q for the quarterly period ended October 28, 2005 fully complies with
the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and
that information contained in such Quarterly Report on Form 10-Q fairly presents, in all material
respects, the financial condition and results of operations of Network Appliance, Inc.
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/s/ STEVEN J. GOMO |
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Steven J. Gomo |
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Executive Vice President of
Finance
and Chief Financial Officer |
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Date: December 6, 2005 |
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