EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Registration Statement on Form S-8 of our reports dated July 7, 2005, relating to the financial statements and financial statement schedule of Network Appliance, Inc. and management’s report on the effectiveness of internal control over financial reporting appearing in the Annual Report on Form 10-K of Network Appliance, Inc. for the year ended April 30, 2005.

/s/ Deloitte and Touche LLP
Deloitte and Touche LLP

San Jose, California
August 31, 2005