Domain user permissions for Dell EMC PowerStore NAS array
The domain user which you use to perform the NAS share backup, must have privileges for the PowerStore array, to allow NetBackup to perform backup of the NAS share ACLs.
NetBackup™ Snapshot Manager for Data Center Administrator's Guide · PDF
The domain user which you use to perform the NAS share backup, must have privileges for the PowerStore array, to allow NetBackup to perform backup of the NAS share ACLs.