Effected NV Version: NetVault:Backup 7.x and greater
OS Version: N/A
Plugin version: N/A
After creating a new VTL VDL (Virtual Tape Library)and adding it to NetVault Device Management all the media is labelled as OTHER and can't be blanked.
You see all tapes marked as "OTHER"
Stopping and then Starting the NetVault service appears to clear up the problem so all tapes are now seen as blank.