Policy

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.

Policy
Pack Microsoft Windows
Category Server
Policy ID 35cd261e0eee
Internal name AllowOnlySystemBackup

Registry

Copy registry mappings

HKLM\Software\Policies\Microsoft\Windows\Backup\Server\OnlySystemBackup (enabled) = 1
HKLM\Software\Policies\Microsoft\Windows\Backup\Server\OnlySystemBackup (disabled) = 0

Policy notes

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.

Related policies

Disallow locally attached storage as backup targetDisallow network as backup targetDisallow optical media as backup targetDisallow run-once backups