> I installed OpenSolaris 2008.11 on a Dell XPS M1330
> Notebook. Now everything works well but I am
> concerned about the harddisk health. After 5sec in
> idle it'll spin down to a lower rotation. So for an
> example when I am downloading large files zfs writes
> to the disk after 5sec the disk spins up and down all
> the time.
That should be the manufacturer's default standby / idle
timer. In the default setup solaris does not change
the timer.
If the disk is using the p-ata programming interface
(that is, solaris uses the "ata" driver and a disk device
name like "c?d?"), you can change the disk's standby
timer in /kernel/drv/ata.conf with the "standby=xxx;"
option. (Reboot is required after changing that option)
If the disk is using one of the s-ata drivers (e.g. using the
"ahci" driver, and disk device names like "c?t?d?"), hdd
power management can be changed in the file
/etc/power.conf. SX:CE has a gui to create the
disk power managemen entries for /etc/power.conf;
for opensolaris there's no such gui and you have to
create the disk power management entries manually
It's something like this:
device-thresholds /p...@0,0/pci1043,8...@5/d...@0,0 1200s
The correct physical device path ("/p...@0,0/.../d...@0,0" in
the above example) can be found in the initial disk menu of
the "format" command.
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