You can back up NAS file server data with a full, incremental, or differential backup.
Procedure
From the navigation pane, go to Protect > File Servers.
The File servers page appears.
In the row for the NAS file server that you want to back up, click the action button
, and then select Back up.
The Select backup level dialog box appears.
Under Backup level, select the type of backup to perform.
Click OK.