Despite displaying a lukewarm attitude toward SSDs last year, Western Digital has taken a big step into the market today by acquiring solid-state drive maker SiliconSystems. The $65 million transaction is already complete, and SiliconSystems has become WD's Solid-State Storage business unit.

WD says it's purchased a leading player in the embedded SSD market: SiliconSystems' SiliconDrive products are purportedly designed to "meet the high performance, high reliability and multi-year product lifecycle demands of the network-communications, industrial, embedded-computing, medical, military and aerospace markets." The 2002 start-up also holds "extensive intellectual property" for serving those markets.

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