lkml.org 
[lkml]   [2005]   [Nov]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: Does Linux support powering down SATA drives?
    On Sat 19-11-05 20:25:07, Alan Cox wrote:
    > On Sad, 2005-11-19 at 19:00 +0000, Alistair John Strachan wrote:
    > > > 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?
    >
    > The latest kernels support command passthrough for SMART and the like
    > but hdparm -S does not "switch off" anything. It may spin a drive down
    > but the power consumption of 23 hours a day of "spun down" is
    > significant, probably more than the hour it is powered up.

    Really? Harddrive does not contain AC/DC converters, so situation should be slightly
    better there, no?
    Pavel
    --
    64 bytes from 195.113.31.123: icmp_seq=28 ttl=51 time=448769.1 ms

    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-11-21 01:42    [from the cache]
    ©2003-2014 Jasper Spaans. Advertise on this site