About policies for NAS backups
Backup policies provide the instructions that NetBackup follows to back up any NAS share or volume. You can create a single policy to protect multiple NAS backups. You can select the shares or volumes that you want to protect using a policy. The NAS arrays are automatically discovered in the NetBackup environment and backed up. You need different policies to apply different backup logic to the shares and volumes.
You can configure the following using a policy:
The Storage Lifecycle Policy (SLP) and media to use.
Backup schedules: Full, Differential incremental, and Cumulative incremental.
Backup selection: You can add an entire NAS share or volume to a policy, or select what to backup using backup selection and the exclude share features.