On Sat, 24 Feb 2007, Raymond Meyer wrote:
> Does sparc64 port support power management on devices like hard disks? I will
> have 2 SCSI disks in my Ultra 10 workstation, for dual booting into Solaris or
> NetBSD. When I boot into NetBSD, I'd like the other disk to power off after a
> period of time. Is this possible?

That doesn't seem specific to sparc64.

As far as I can see, spinning down disks after some idle time is supported 
for IDE disks, but not for SCSI disks. For more information see atactl(8) 
and scsictl(8).

For my 2nd IDE disk that I don't use under NetBSD, I have the following in 
/etc/rc.local:

# Shut up disks
atactl wd2 setstandby 60


  - Hubert