Hitachi Appoints Dave Roberson as CEO of Hitachi Data Systems

Storage Industry Leader Hitachi Data Systems Announces New Management Team as the Company Continues its Record Growth and Market Share Dominance

SANTA CLARA, Calif.—March 7, 2006—Hitachi Data Systems Corporation, the leading provider of Application Optimized Storage™ solutions and a wholly owned subsidiary of Hitachi, Ltd. (NYSE: HIT), today announced the appointment of Dave Roberson as president and chief executive officer. Mr. Roberson, who currently serves as president and chief operating officer of Hitachi Data Systems, succeeds Shinjiro Iwata as chief executive officer. Mr. Iwata will take on the role of chief marketing officer for Hitachi, Ltd.’s strategic business segment — the Information and Telecommunications Systems Group (ITSG). In addition, the company announced that Minoru Kosuge, former division president of Hitachi, Ltd.’s Disk Array Systems Division, has been promoted to chief operating officer of Hitachi Data Systems, from his current position as executive vice president and chief storage architect. These organizational changes will be effective on April 1, 2006.

“Over the last four years, Dave and I teamed up to transform Hitachi Data Systems into the storage leader with disruptive technologies that dramatically changed the market,” said Shinjiro Iwata, chief executive officer, Hitachi Data Systems. “Dave’s strategic vision and demonstrated strength in managing operations will continue to drive the company’s growth and further extend our leadership in the storage industry. I look forward to collaborating with Dave in my new role to reinforce Hitachi’s global business strategy.”

Mr. Roberson is an accomplished industry veteran with considerable expertise in all areas of business leadership. In addition to his 25 years in key executive management positions at Hitachi Data Systems, Mr. Roberson has served as a board member of several public and private companies, spanning semiconductors to IT services.

“I would like to thank Shinjiro Iwata for his invaluable contributions to the success of Hitachi Data Systems,” said Roberson. “His leadership has driven us to attain number one marketshare in high-end RAID storage and achieve industry thought leadership—all of which positions us well for continued success going forward. I look forward to working with Iwata-san in his new role.”

This announcement comes at a time when Hitachi Data Systems is experiencing very strong growth, fueled by sales of solutions based on the company’s revolutionary Hitachi TagmaStore™ Universal Storage Platform and its unique controller-based virtualization capabilities, rapidly growing HiCommand® storage management software suite, and newly strengthened midrange offerings.
About Hitachi Data Systems

Hitachi Data Systems leverages global R&D resources to develop storage solutions built on industry-leading technology with the performance, availability and scalability to maximize customers’ ROI and minimize their risk. By focusing on the customer’s perspective as we apply the best hardware, software, and services from Hitachi and our partners, we uniquely satisfy our customers’ business needs.

With approximately 2,900 employees, Hitachi Data Systems conducts business through direct and indirect channels in the public, government and private sectors in over 170 countries and regions. Its customers include more than 50 percent of Fortune 100 companies. For more information, please visit our Web site at http://www.hds.com.

About Hitachi, Ltd.

Hitachi, Ltd., (NYSE: HIT), headquartered in Tokyo, Japan, is a leading global electronics company with approximately 347,000 employees worldwide. Fiscal 2004 (ended March 31, 2005) consolidated sales totaled 9,027.0 billion yen ($84.4 billion). The company offers a wide range of systems, products and services in market sectors including information systems, electronic devices, power and industrial systems, consumer products, materials and financial services. For more information on Hitachi, please visit the company’s Website at http://www.hitachi.com.

© 2006, Hitachi Data Systems Corporation. Hitachi Data Systems is registered with the U.S. Patent and Trademark Office as a trademark and service mark of Hitachi, Ltd. Application Optimized Storage and TagmaStore are trademarks of Hitachi Data Systems Corporation. HiCommand is a registered trademark of Hitachi, Ltd. All other trade names, trademarks, and service marks used herein are the rightful property of their respective owners.

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Hitachi Data Systems Corporation

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