PMC-Sierra and Hitachi Achieve 6Gb/s SAS Interoperability

SANTA CLARA, Calif.—(BUSINESS WIRE)—April 30, 2008— PMC-Sierra (NASDAQ: PMCS) and Hitachi Global Storage Technologies (Hitachi GST) today announced the companies successfully achieved interoperability between PMC-Sierras end-to-end 6Gb/s SAS chipsets and Hitachi 6Gb/s SAS prototype hard disk drives (HDDs). PMC-Sierras 6Gb/s SAS chipsets include the Tachyon® SPC 8x6G SAS protocol controller, the SRC 8x6G RAID-on-Chip controller and maxSAS SXP 36/24x6GSec expander switches.

The increased performance offered by 6Gb/s SAS HDDs enables SAS-2 systems to deliver higher levels of scalability, availability and reliability. Demonstrating successful 6Gb/s SAS interoperability between PMC-Sierra chipsets and Hitachi hard drives allows server and storage system equipment manufacturers to design a SAS-2 architecture operating end-to-end at 6Gb/s line rate with confidence.

6Gb/s SAS hard drives and other infrastructure components will be fully backward compatible with existing 3Gb/s devices. This provides enterprise customers with exceptional configuration flexibility and investment protection.

PMC-Sierra is committed to ensuring full interoperability with 6Gb/s components to reduce the time to market and transition seamlessly to 6Gb/s SAS/SATA systems, said Travis Karr, vice president of marketing for PMC-Sierras Enterprise Storage Division. PMC-Sierra has been very impressed by the quality and maturity of Hitachis 6Gb/s SAS technology, which translated directly into successful interoperability between PMC-Sierras end-to-end 6Gb/s SAS chipset and Hitachi 6Gb/s SAS HDDs.

The increased transfer rate of the new 6Gb/s SAS interface is critical to satisfying our enterprise customers continuing appetite for performance enhancements, said Currie Munce, vice president, Enterprise HDD Business Group, Hitachi Global Storage Technologies. Hitachi is pleased to have collaborated with PMC-Sierra and demonstrated interoperability with our respective 6Gb/s SAS products. These collaborations will help pave the way for a seamless industry transition to the new interface standard.

Hitachi and PMC-Sierra will participate in the SCSI Trade Associations SAS Solutions Open House being held at the Fairmont Hotel in San Jose, CA on May 6. The event is designed to provide a broad SAS learning experience and will include a 6Gb/s SAS technology demonstration.

About PMC-Sierras Storage Products

PMC-Sierra is a leading provider of enterprise storage system solutions for networked (SAN/NAS) and server storage applications, with a broad portfolio of Fibre Channel and SAS/SATA protocol controllers, encryption protocol controllers, RAID controllers and disk interconnect products. PMC-Sierras Tachyon protocol controllers, Fibre Channel loop switches, enclosure management controllers and maxSAS expander switches and multiplexers provide the most comprehensive solution for enterprise-class storage systems. Together, these products are providing end-to-end semiconductor and software solutions to the industrys leading storage OEMs and ODMs. For more information, visit

About PMC-Sierra

PMC-SierraTM is a leading provider of broadband communications and storage semiconductors for metro, access, fiber to the home, wireless infrastructure, storage, laser printers, and fiber access gateway equipment. PMC-Sierra offers worldwide technical and sales support, including a network of offices throughout North America, Europe, Israel and Asia. The company is publicly traded on the NASDAQ Stock Market under the PMCS symbol. For more information, visit

About Hitachi Global Storage Technologies

Hitachi Global Storage Technologies develops advanced hard disk drives to store and preserve the worlds valued data. Founded by the pioneers of hard drives, Hitachi GST enables users to fully engage in the digital lifestyle by providing high-value, high-capacity storage in formats suitable for the office, in the home or on the road. With vertically integrated research, design and manufacturing capabilities, Hitachi GST delivers leadership technology and quality to its global customer base.

With approximately 33,000 employees worldwide, Hitachi GST offers a comprehensive range of hard drive products for desktop computers, high-performance storage systems and servers, notebooks and consumer devices. For more information, please visit the companys website at

Hitachi Global Storage Technologies trademarks are authorized for use in countries and jurisdictions in which Hitachi Global Storage Technologies has the right to use, market and advertise the brands. The Travelstar trademark is authorized for use in the Americas, EMEA, and in the Asia-Pacific region in the following countries: Australia, Hong Kong, Japan, New Zealand, Singapore, South Korea and Taiwan.

About Hitachi, Ltd.

Hitachi, Ltd., (NYSE: HIT/TSE: 6501), headquartered in Tokyo, Japan, is a leading global electronics company with approximately 384,000 employees worldwide. Fiscal 2006 (ended March 31, 2007) consolidated revenues totaled 10,247 billion yen ($86.8 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 .

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