Re: Does Linux support powering down SATA drives?

[Alistair John Strachan]

On Saturday 19 November 2005 19:01, Alan Cox wrote:
> On Sad, 2005-11-19 at 09:41 -0800, Marc Perkel wrote:
> > Trying to save power consumption. I have a backup drive that is used
> > only once a day to back up the main drive. So - why should I run it more
> > that 10 minutes a day? What I'd like to do is keep it in an off state
> > and then at night power it on, mount it up, do the backup, unmount it,
> > and shut it down. Can I do that?
>
> SATA not yet, USB you could however.

Or PATA, of course. I switch off two of my HDs 4 minutes after last use with 
the commands:

hdparm -S 48 /dev/hde
hdparm -S 48 /dev/hdg

Isn't there a passthru patch in the works to let commands, such as the one 
required for suspend, through to a SATA device?

-- 
Cheers,
Alistair.

'No sense being pessimistic, it probably wouldn't work anyway.'
Third year Computer Science undergraduate.
1F2 55 South Clerk Street, Edinburgh, UK.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/