[mythtv-users] Using spindown with SCSI RAID5?

Silvestro Roberto silvestro.roberto at gmail.com
Wed Jun 25 22:32:12 UTC 2008


I think you can spin down only spare disks in the array!

2008/6/25 George Mari <george_mythusers at mari1938.org>:

> Anyone out there had any success with spinning down SCSI disks in a
> software RAID5 array for power saving?
>
> I tried to spin down one of my 4 disks in a RAID5 array, using the command:
>
> sdparm --command=stop /dev/sdi
>
> This spun the drive down (good), but it also kicked it out of the array.
>  (bad)
>
> What I'm trying to do is just have it power down somehow after a certain
> time being idle, and then just spin up again when accessed without
> breaking the  but it seems that SCSI drives don't have all the power
> management options that PATA or SATA drives do.  (Or maybe just my
> particular SCSI drives don't have these features...)
>
> I'd love to hear from anyone with specific experience with trying to do
> this with SCSI drives - thanks.
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