[mythtv-users] Power bill vs SchedulesDirect bill
gull at gull.us
Tue Sep 18 23:51:23 UTC 2007
On Sep 18, 2007, at 4:10 PM, Yan Seiner wrote:
> With new mobos having 4 - 6 SATA connectors, it would be nice if the
> drives could be told to spin up sequentially rather than all at once.
The SATA spec defines a pin to control staggered spinup, but I think
most cheap controllers don't support it.
With IDE drives the situation isn't quite so bad, because most drives
delay spinup for a few seconds when they're configured as a slave.
So if you have two drives per channel, only half the drives will spin
up at once.
Most serious SCSI RAID controllers spin up drives in staggered
pairs. This can be a lot of fun to listen to on a big array,
although it also makes the boot much more time consuming. I've had
servers that would take over a minute just to get to the point where
they were executing the boot loader.
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