Press Release

Rackable Systems Completes Name Change


Company's NASDAQ Ticker Symbol Becomes "SGI"

FREMONT, CA (May 18, 2009) — Rackable Systems, Inc. (NASDAQ: RACK) announced today the completion of its legal name change to "Silicon Graphics International Corp." The company also announced today that it will change its NASDAQ stock ticker symbol from "RACK" to "SGI." The stock ticker change has gone into effect for the trading community on Monday, May 18, 2009.

SGI® also announced that ISS Governance Services of the Risk Management Group has released its recommendation for company shareholders to vote "FOR" all incumbent directors and proposals in the company's upcoming annual meeting, which will take place on May 29, 2009 at the company's corporate headquarters in Fremont, California.

"It is indeed gratifying to receive the support of our customers and shareholders at this pivotal time," said Ron Verdoorn, chairman of SGI.

Mark J. Barrenechea, president and CEO of SGI added, "Leveraging a unified SGI brand will enable us to communicate more effectively to our customers and partners around the globe. Implementing the new trading symbol better aligns our corporate brand with our vision."

About SGI
SGI® (Silicon Graphics International Corp.) is a global leader in large-scale clustered computing, clustered storage, HPC and data center enablement and services. SGI is dedicated to solving these industries' most demanding business and technology challenges. Visit www.sgi.com for more information.

Contact Information:

SGI
Jim Wheat, CFO
510-933-8088
investorrelations@sgi.com
Schwartz Communications, Inc.
Jen Spark, Vice President
415-512-0770
SGIPR@schwartz-pr.com

SGI is a registered trademark of Silicon Graphics International Corp. All other trademarks are property of their respective holders.