Hi,
There are some test that you can do to identify this problem, see
1. Run the following commands to query and update the disk pool device status on the netbackup server end.
To check the state of the disk pool
../NetBackup/bin/admincmd/nbdevquery -listdp -stype PureDisk -U
2. To check the state of the disk volume
../NetBackup/bin/admincmd/nbdevquery -listdv -stype PureDisk -dp <disk Pool name> -dv <disk volume name> -U
Note - the disk volume name in the command above was found in the NetBackup Admin Console in the All diskpools selection.
3. To bring up the disk volume state
../NetBackup/bin/admincmd/nbdevconfig -changestate -stype PureDisk -dp <Disk Pool name> -dv <disk volume name> -state UP
Note - the <disk volume name> can be obtained by the NetBackup Administration Console /devices/diskpools selection.
Regards,
Thiago Ribeiro