Use the nbdevconfig command to remove a volume from a disk pool. The following are the prerequisites:
By default, NetBackup automatically decreases disk pool capacity if you remove a disk volume.
To remove a volume from an AdvancedDisk disk pool
Remove the volume by using the nbdevconfig command. The following is the command syntax:
install_path\NetBackup\bin\admincmd\nbdevconfig -deletedv -stype AdvancedDisk -dp disk_pool_name - dv vol_name