Windows Backup Windows Backup Allow only system backup This policy setting allows you to manage whether backups of only system volumes is allowed or both OS and data volumes can be backed up. If you enable this policy setting, machine administrator/backup operator can backup only volumes hosting OS components and no data only volumes can be backed up.If you disable or do not configure this policy setting, backups can include both system or data volumes. Disallow locally attached storage as backup target This policy setting allows you to manage whether backups of a machine can run to locally attached storage or not. If you enable this policy setting, machine administrator/backup operator cannot use Windows Server Backup to run backups to a locally attached storage or disk. If you disable or do not configure this policy setting, there is no restriction on locally attached storage or disk being backup target. Disallow network as backup target This policy setting allows you to manage whether backups of a machine can run to a network share or not. If you enable this policy setting, machine administrator/backup operator cannot use Windows Server Backup to run backups to a network share. If you disable or do not configure this policy setting, there is no restriction on network share being backup target. Disallow optical media as backup target This policy setting allows you to manage whether backups of a machine can run to an optical media or not. If you enable this policy setting, machine administrator/backup operator cannot use Windows Server Backup to run backups to an optical media. If you disable or do not configure this policy setting, there is no restriction on optical media being backup target. Disallow run-once backups This policy setting allows you to manage whether run-once backups of a machine can be run or not. If you enable this policy setting, machine administrator/backup operator cannot use Windows Server Backup to run non-scheduled run-once backups. If you disable or do not configure this policy setting, there is no restriction on running run-once backups. Windows Server 2008 and later. Backup Server Windows Components