A duplicate backup job of GRT (Granular Recovery Technology) GRT enabled VMWare backup fails with the error "Invalid Physical Volume Library Media Identifier"
V-79-57344-33029 - Error - Mount failed.
Invalid Physical Volume Library Media Identifier.
V-79-57344-33029 - Unable to acquire device for the specified pool and media
1. In Job Monitor, right click the failed backup to tape job. Select "Edit Selection List. In Selection List select the "View Selection Details" tab. If there are any sets from dates other than the date being duplicated, delete them.
2. If the event logs show any disk errors, run Check disk on this drive.
3. If any disks in Disk Management have errors, the disk may need to be replaced.