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Access "Disks Get Switched"

Published: 29 Oct 2012

The behind-the-scenes march by storage system vendors to switch disks within the array began a couple of years ago, but recent announcements from providers of storage silicon suggest that the pace is quickening. As a result, storage buyers should begin to see high-end arrays with better availability and performance characteristics than what they are currently used to. This spring, PMC-Sierra announced a 4Gb cut-through switch, or loop switch, which the company bills as a big improvement to the intelligent port bypass circuit (PBC) it announced in 2003. More recently, the semi-conductor company Broadcom, which has shown an intense interest in the storage market, announced an entire 4Gb/sec 16-port fabric--as opposed to loop--switch designed to go inside high-density arrays. The trend of switching disks within the array was arguably started by Vixel when it introduced its InSpeed switch on a chip (SOC) more than two years ago. Vixel has since been acquired by Emulex, which recently reported it had shipped more than 2 million InSpeed ports across at least 15 ... Access >>>

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