- Turn off system sleep.
- FireWire automount problems.
- Set Missing
In the System Preferences under Energy Saver, set Never for system sleep. The display should be set to sleep. Disable hard disk sleep on busy servers.
"/usr/bin/pmset -c dim 10 spindown 0 sleep 0 reduce 0" ifelapsed=3333
A FireWire drive swapped in by a user may be unmounted should all users log off. Backups will fail, as Retrospect will be unable to find the backup disk. The following setting change should keep disks mounted.
$ sudo defaults write \
AutomountDisksWithoutUserLogin -bool true
See also auto disk mount without user login causing disk mount failure on macosxhints.com for more details on this option.
Check the missing status of FireWire disks if there are backup problems, as a user might accidentally click on Set Missing if trying to make a dialog box from Retrospect go away.