CommVault Systems and Network Appliance Introduce Certified Tape Backup Solutions

— Development Continues to Expand Certified Data Protection Offerings —

OCEANPORT, NJ and SUNNYVALE, CA — May 9, 2001 — CommVault Systems, Inc., an industry-leading provider of enterprise data and storage management software, and Network Appliance, Inc. (NASDAQ: NTAP), the leading provider of network-attached data access and content delivery solutions, today announced that CommVault Galaxy™ software supports the Network Appliance™ FC Fabric Tape SAN Backup solution. The CommVault Galaxy solution features advanced application integration, a unique interface, and storage policies that enable administrators to view data logically, rather than physically, to ensure easy, reliable data and storage management. As a result, customers with enormous volumes of data can simplify, consolidate, and better manage their storage infrastructures and data protection strategies. The combination of the CommVault Galaxy software, Network Appliance filers, and SAN device support delivers a highly scalable data and storage management solution that is easy to deploy and manage, while less expensive to operate.

CommVault Galaxy software features a next-generation architecture that was specifically designed to deliver superior performance and protection for enterprise environments where data is distributed across multiple heterogeneous platforms and sites. This unique architecture makes CommVault Galaxy software the logical choice for backup and recovery in large global, data-intensive enterprises.

This announcement underscores CommVault's commitment to offering the industry's most advanced software solutions for Network Appliance filers," said Larry Cormier, vice president of marketing and business development, CommVault Systems. "This solution enables both companies to effectively address customer demand for complementary software and hardware technologies that unleash the full power of their data and storage management system infrastructures."

"Network Appliance is working closely with CommVault to deliver advanced solutions that provide enterprise-class reliability and performance for our customers," said Mark Santora, senior vice president of marketing at Network Appliance. "CommVault Galaxy support for Network Applianceâ„¢ solutions provides customers with a flexible, secure data protection and high availability solution, as they scale their storage requirements to thousands of terabytes."

CommVault Galaxy data and storage management software delivers the following key financial, operational and business benefits to customers:

• Simplifies the management of complex infrastructures
• Helps increase ROI and lower total cost of ownership
• A single browser interface makes the product easier to configure, deploy, use, maintain and administer
• Aligns IT goals with business goals through greater employee productivity and access to vital application data
• Provides advanced data management and faster access to business-critical data through tight integration with popular operating systems, directory services, Oracle^® databases, and key Microsoft^® applications such as Exchange and SQL Server
• Improves time-to-market of business-critical applications. Speeds migration to Windows^® 2000 operating systems and applications
• Reduces risk by preparing organizations for disaster recovery via a sound data protection strategy

About Network Appliance
Network Appliance, Inc., a veteran in network file storage and content delivery, has been providing data access solutions since 1992, and is a member of both the S&P 500 and NASDAQ 100 index. Major corporations and service providers, including Lycos, Yahoo!, Citicorp Securities, Siemens, Lockheed, Cisco, Motorola, and Texas Instruments have deployed Network Appliance solutions.

The company pioneered the concept of the "network appliance," an extension of the industry trend toward dedicated, specialized products that perform a single function. Network Appliance's storage and content delivery platforms (filers and NetCache™ appliances) are coupled with powerful content distribution and reporting software. This center-to-edge™ solution offers seamless data management from the back-end data center to the edge of the network quickly, simply, and reliably. The Network Appliance product portfolio utilizes the company's innovative data access software, known as the Data ONTAP™ operating system, as well as standards-compliant hardware. It also offers multi-protocol support and transparent integration for UNIX^® and Windows environments.

About CommVault Systems
CommVault Systems, Inc. is a worldwide leader in providing enterprise-wide data and storage management solutions for heterogeneous environments. The company's singular focus is creating and implementing fast, reliable, and easy-to-use data and storage management solutions to meet customer's data management requirements. The company's software products seamlessly ensure the reliable, rapid restoration of files, business-critical applications, and today's most popular databases. Information on CommVault is available on the World Wide Web at www.commvault.com or by calling (732) 870-4000. CommVault's corporate headquarters is located in Oceanport, New Jersey in the United States.

Network Appliance is a registered trademark and Network Appliance, NetCache, center-to-edge, and Data ONTAP are trademarks of Network Appliance, Inc. in the U.S. and other countries. CommVault, CommVault Systems, CommVault Galaxy, and the CommVault logo are trademarks and may be registered trademarks in some jurisdictions of CommVault Systems, Inc. Windows and Microsoft are registered trademark of Microsoft Corporation. UNIX is a registered trademark in the U.S. and other countries, licensed exclusively through X/Open Company Limited. Oracle is a registered trademark of Oracle Corporation. All other brands or products are trademarks or registered trademarks of their respective holders and should be treated as such.