Hyper-V Backup Pulls Windows Server 2012 into Saved State
Backing up a Hyper-V virtual machine running Windows Server 2012 (or R2) on a Window Server 2008 R2 host may cause the VM to go into a Saved State. This is due to a Hyper-V limitation and not an issue with the HyperV Backup Software being used.
Please check the following:
Make sure the host as well as all guest OSes are up-to-date with Windows Update first.
Then, check this article and automatically (or manually) check the Hyper-V Integration Services version.
If the Hyper-V Integration Services versions do not match between host and guest, the Hyper-V backups won’t work properly.
Beyond that check
- Volume Snapshot Integration Service is installed and available (not disabled)
- there are no dynamic disks inside the VM
- there are only NTFS volumes inside the VM
- If you have a cluster setup, the Cluster Resource Group is offline
- The VM is actually running
- Using vssadmin or vssuirun.exe, check that there are no ShadowStorage assignments of a volume inside the virtual machine that are set to a different volume than the volume itself. For example, a volume could allocate its VSS storage are for C: on D:. That’s not supported for Hyper-V live backup
- An App-V drive is installed inside the VM and created a non-NTFS partition.
You can also try to create a registry key inside the Windows Server 2012 VM:
Create the key: HKLM\Software\Microsoft\Windows NT\CurrentVersion\SystemRestore And set/add the REG_DWORD "ScopeSnapshots" to zero (0x00)
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