energy-saver for SCSI HDs?

Hi again,

I'm successfully running an ftp-service on my Quadra700
with NetBSD 
3.0.1 now. Fine so far, but since the machine shall be
running 24/7 I 
am a little concerned about the life-time expectation of my
SCSI-HD. 
The Quadra is ancient and so is the HD (although 2 or 3
years younger I 
believe). Thus I am wondering if there is a package in
general and for 
the 68k port in particular that will manage a spin-down of
the HD 
during idle-times. The ftp-server will be accessed once a
week or less 
only. Most of the time the HD could go asleep. Could anyone
give me a 
hint on this?

Thanks, Andreas

At 12:32 Uhr +0200 13.9.2006, Andreas Wolf wrote:
>I'm successfully running an ftp-service on my Quadra700
with NetBSD
>3.0.1 now. Fine so far, but since the machine shall be
running 24/7 I
>am a little concerned about the life-time expectation of
my SCSI-HD.

Generally, spin-{up,down} is supposed to be a lot more
stressful for
harddisks than continuous operation - think wear of the
bearings, and
temperature gradient. That being said, look for tips on
notebook harddisks.
The noatime mount option comes to mind, as disabling cron
and any other
daemons that periodically access the disk.

Once you've disabled all this, a 'scsictl /dev/rsdNc
stop' (N=0..6)
manually stops the drive spindle. I am not aware of any
automagical timer
in the kernel that does this, though.

	hauke

--
"It's never straight up and down"     (DEVO)

At 12:32 Uhr +0200 13.9.2006, Andreas Wolf wrote:
>I'm successfully running an ftp-service on my Quadra700
with NetBSD
>3.0.1 now. Fine so far, but since the machine shall be
running 24/7 I
>am a little concerned about the life-time expectation of
my SCSI-HD.

Generally, spin-{up,down} is supposed to be a lot more
stressful for
harddisks than continuous operation - think wear of the
bearings, and
temperature gradient. That being said, look for tips on
notebook harddisks.
The noatime mount option comes to mind, as disabling cron
and any other
daemons that periodically access the disk.

Once you've disabled all this, a 'scsictl /dev/rsdNc
stop' (N=0..6)
manually stops the drive spindle. I am not aware of any
automagical timer
in the kernel that does this, though.

	hauke

--
"It's never straight up and down"     (DEVO)