I am running Ubuntu 10.10 (amd64). I have two SATA drives connected to the system that I use for weekly backups. I'd like to spin these two disks down when not in use. I have tried:
1) Editing hdparm.conf like so:
spindown_time = 241
Result: The drives never spin down (checked them using hdparm -C /dev/sdf1)
2) I have also tried adding a line to rc.local like so:
sudo hdparm -S 241 /dev/sdf1
Result: The drives never spin down.
The drives are formatted as ext4. Here is how they are mounted in fstab:
UUID=(UUID) /media/(UUID) ext4 rw,suid,dev,exec,auto,user,async,relatime 0 2
I can't seem to find a way to spin these disks down. Any help would be appreciated.