208 Troubleshooting the Tape Library
T012
T012- Drive Unload Control Prevented
Description GUI Description: A host issued a SCSI Prevent/Allow Media Removal
command that is preventing the drive from unloading a tape cartridge.
Explanation: The library needs to issue a command to the drive (such as
unload) but cannot perform the operation, because the host issued a Prevent/
Allow Medium Removal SCSI command, preventing media removal.
Detection Scenarios • Library tries to issue an unload command, but drive status indicates that
media removal is prevented.
• Library tries to issue a command associated with tape drive download.
Root Causes A host has issued a Prevent/Allow Medium Removal SCSI command,
preventing a user to move the media from the drive.
Service Resolution
Steps
1 Perform DR016 -
Resolve Prevent/Allow Media Removal on page 374.
2 Perform an unlock operation through the backup software to remove this
condition on the tape drive.
Possible CRUs/FRUs Note: Read and perform all resolution steps before dispatching any parts.
No library CRU or FRU is involved. Rather, this is an indication that a host
may have orphaned a reserve on the drive.
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