Note the following when you use NetBackup to perform backup or restore operations using Granular Recovery Technology:
In the Local Security Settings, the Users group must have User Rights Assignment "Allow log on locally". By default, the Users group is included. If the Users group does not have this right, the following error occurs:
Backups of the SharePoint Web applications or portals that use Granular Recovery Technology (GRT) and that contain a larger number of content databases (100+) may timeout. In this situation, increase the default "Client read timeout" setting to 900 seconds.