HDS also focuses its efforts on keeping disks spinnning, and uses an approach it describes as "powering down" when they are not needed.
"We're looking at the access pattern of the applications and spinning them up in parallel and down in parallel," says Alvarado, explaining that spinning the drives in pairs enables faster retrieval of data than spinning them up one at a time.
Like HDS and EMC, which is also planning its own disk power-down technology, Alvarado refuses to describe Xyratex's technology as MAID.
"This is not MAID -- the idea of MAID is to have a much larger number of disks available in a relatively online state, with most drives in sleep mode," he says.
Version 2.3 of Xyratex's RAID software will be available as a free upgrade for users of Xyratex's existing 5000 Series family of products next month, provided they have maintenance agreements. The software will also be offered on the F6412E device in June or July.
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