Network Appliance Selected for CMP Media InformationWeek 500

Sunnyvale, Calif. - September 21, 2004 -- Network Appliance, Inc. (NASDAQ: NTAP), the leader in advanced networked storage solutions for today's data-intensive enterprise, announced that it has been named to CMP Media LLC's InformationWeek 500, a prestigious listing of the most innovative users of information technology in the United States.

For 16 years, the InformationWeek 500 has tracked organizations' IT agendas, providing a unique opportunity to understand and examine their business practices across core areas of technology operations. Companies named to this list demonstrate a pattern of technological and organizational innovation. NetApp is among the 500 companies recognized for IT innovation this year.

"Network Appliance is honored to be named to the InformationWeek 500," said Scot Klimke, chief information officer at Network Appliance. "The agile IT practices and systems that Network Appliance has implemented allows us to react quickly to new market opportunities, advance our strategic alliance relationships, and to grow our business by building powerful and long-lasting customer relationships."

The InformationWeek 500 is the most detailed source of industry-specific IT budget data. The research project gathered in-depth information directly from companies about how they approach and prioritize their IT investments. The research identified and ranked the companies following an extensive online and phone study.

About InformationWeek
InformationWeek helps more than 440,000 Business Technology Professionals who buy, build and manage technology drive business innovation powered by technology. In addition to the weekly magazine, InformationWeek provides a platform of information solutions including www.informationweek.com, InformationWeek Research, InformationWeek Events, which includes the InformationWeek Conference for Business Technology Executives and the InformationWeek Daily, an e-mail news service. In May 2003 in conjunction with Optimize, InformationWeek launched its Media Network. The Media Network consists of Optimize and Government Enterprise, as well as its Vertical Industry Network publications - Bank Systems & Technology, Insurance & Technology and Wall Street & Technology. InformationWeek is consistently recognized for its commitment to excellence and innovation, receiving several of the industry's top media accolades including top spots in BtoB Magazine's annual Media Power 50, as well as awards from ASBPE and Circulation Management magazine.

About CMP Media LLC
CMP Media LLC (www.cmp.com) is a leading integrated media company providing essential information and marketing services to the entire technology spectrum-the builders, sellers and users of technology worldwide. Capitalizing on its editorial strength, CMP is uniquely positioned to offer marketers comprehensive, integrated media solutions tailored to meet their individual needs. Its diverse products and services include newspapers, magazines, Internet products, and research, direct marketing services, education and training, trade shows and conferences, and custom publishing.

About Network Appliance
Network Appliance is a world leader in unified storage solutions for today's data-intensive enterprise. Since its inception in 1992, Network Appliance has delivered technology, product, and partner firsts that continue to drive "The evolution of storage.™" Information about Network Appliance™ solutions and services is available at www.netapp.com.

Press Contact:
Amy Wall
Voce Communications for Network Appliance, Inc.
(650) 322-2616
awall@vocecomm.com