Oceanport, N.J. — August 22, 2007 — CommVault® (NASDAQ: CVLT) today announced it has deepened its existing relationship with Arrow Electronics, Inc. (NYSE: ARW) to include an agreement authorizing Arrow's Enterprise Computing Solutions' (ECS) business unit to distribute CommVault solutions in the public sector. The expansion represents another step in CommVault's commitment to its indirect distribution channel and to making it easier for customers to gain access to the full breadth of the CommVault Simpana™ 7.0 software suite of Data Protection, Archive, Replication, Search and Resource Management solutions.

"By working with Arrow ECS, CommVault is now well-positioned to implement a highly effective federal channel program which builds on the mutual successes we have already seen in the commercial space," said Ron Miiller, CommVault's vice president of North American sales. "With the necessary sales tools, resources and experience to navigate the often complex government procurement cycles, Arrow ECS can simplify the government selling experience for our federal partners to drive increased sales to federal, government and local state agencies. There is massive potential in this market and by combining forces, this agreement is a win-win for CommVault and Arrow ECS, as well as our partners and their customers."

Under the expanded agreement, Arrow ECS will initially have exclusive distribution rights to CommVault's award-winning enterprise data management products and services within the government sector that are sold through CommVault's value added resellers (VARs). The agreement leverages both companies' leading technology and sales expertise and provides federal resellers with solutions to address their customers' information management technology challenges. Channel partners will benefit from Arrow ECS' deep expertise in handling procurement fulfillment, order processing and financing for large government contracts, as well as the complementary nature of CommVault software and Arrow ECS' major storage hardware lines including HP and Network Appliance. Arrow ECS is also currently the exclusive commercial distributor for CommVault, selling Simpana 7.0 software solutions as part of a formalized relationship announced in March this year.

"We are already seeing enterprise traction since we first partnered with CommVault, so the expansion of our agreement into the public sector is a natural progression for us," said Kevin Gilroy, president, Arrow ECS. "Arrow ECS' government offerings currently include a dedicated, Beltway-based team to assist resellers with pursuing public sector contracts, education and consulting services, and supplier-dedicated government specialists providing pre-sale technical support. The addition of CommVault's software solutions to our portfolio — particularly its industry-leading storage management solutions — will enhance Arrow ECS' strong offerings in the government space."

In order to drive the Company's major federal government initiative, CommVault has also formalized its CommVault Federal Channel Program. VARs already part of the program include Apptis, GovConnection, OSSI, Karcher Group and CDW-G.

"We are excited to see the commitment CommVault is making to this market," said Scott Sanner, Alliance manager, Apptis. "We're hearing government customers tell us to help them take the complexity out of managing their storage environments by reducing the number of point products they need to manage, therefore a solutions bundle is very appealing to us."

CommVault's data management products for government resellers have been available since August 13, 2007.

About Arrow ECS
Arrow ECS, a business unit of Arrow Electronics, Inc. [NYSE: ARW], provides enterprise and midrange computing products, services and solutions to value-added resellers, system integrators, and independent software vendors. Based in Englewood, Colo., Arrow ECS connects its customers to an exclusive network of the world's foremost technology suppliers, including HP, IBM, Sun Microsystems, EMC, NetApp, Hitachi Data Systems, and other leading storage networking, software, and security suppliers. Arrow ECS reported $2.5 billion in worldwide computer products sales in 2006. Visit us at www.arrowecs.com.

About CommVault®
A singular vision — a belief in a better way to address current and future data management needs — guides CommVault in the development of Singular Information Management™ solutions for high-performance data protection, universal availability and simplified management of data on complex storage networks. CommVault's exclusive single-platform architecture gives companies unprecedented control over data growth, costs and risk. CommVault's software was designed to work together seamlessly from the ground up, sharing a single code and common function set, to deliver superlative Data Protection, Archive, Replication, Search and Resource Management. More companies every day join those who have discovered the unparalleled efficiency, performance, reliability, and control only CommVault can offer. Information about CommVault is available at www.commvault.com. CommVault's corporate headquarters is located in Oceanport, New Jersey in the United States.

Safe Harbor Statement
This press release may contain forward-looking statements, including statements regarding financial projections, which are subject to risks and uncertainties, such as competitive factors, difficulties and delays inherent in the development, manufacturing, marketing and sale of software products and related services, general economic conditions and others. Statements regarding CommVault's beliefs, plans, expectations or intentions regarding the future are forward-looking statements, within the meaning of Section 27A of the Securities Act of 1933, as amended and Section 21E of the Securities Exchange Act of 1934, as amended. All such forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Actual results may differ materially from anticipated results. CommVault does not undertake to update its forward-looking statements.

©1999-2007 CommVault Systems, Inc. All rights reserved. CommVault, CommVault and logo, the "CV" logo, CommVault Systems, Solving Forward, SIM, Singular Information Management, Simpana, CommVault Galaxy, Unified Data Management, QiNetix, Quick Recovery, QR, GridStor, Vault Tracker, QuickSnap, QSnap, Recovery Director, CommServe, CommCell, and InnerVault are trademarks or registered trademarks of CommVault Systems, Inc. All other third party brands, products, service names, trademarks, or registered service marks are the property of and used to identify the products or services of their respective owners. All specifications are subject to change without notice.