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Old 5th November 2008
sim sim is offline
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Default Possible to idle / spin-down SCSI drives?

Hi all

I have a FreeBSD 7.0 box which takes nightly rsnapshots of other machines. The snapshots are stored on a dedicated SCSI RAID-1 array, independent of the OS which is on a low-power 2.5" IDE drive.

In these cost/energy conscious times, is it possible to spin-down the SCSIs? They're only required for about 15 minutes a day, and the rest of the time they're hot, noisy and chewing power (and money) pointlessly!

I know of, and have used, ataidle for IDE drives. Is there an equiv for SCSI?

Controller is a Dell PERC 320/DC (nee Adaptec 2200S), running two Seagate 10k Barracudas. I can switch to an LSI MegaRAID that I have lying about if that would make any difference. (I understand the LSI cards have more functional management tools in FreeBSD).

Any help would be greatly appreciated!

/sim
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