I have a system running SBS 2011.
SBS backup is configured to do a nightly backup to a set of dedicated external drives connected via USB.
For the past few nights we have had a problem with a particular disk being locked each morning - although the disks are USB connected, it is via an internal disk bay and the only way to eject them is via an eject button - but this will not work because the disk is locked.
The backup shows as completing successfully so I am not sure why the device is locked.
I tried using sysinternals handle to see what process has the disk locked, but because it is a dedicated backup disk, it does not have a drive letter, so I am not sure if it would even show up in handle.
A reboot last night did not resolve the issue, although the backup did run again after the reboot, so I am guessing that some part of the backup process is keeping a lock on the disk.
Any ideas how to troubleshoot further?