An organization uses System Center 2012 R2 Data Protection Manager (DPM).
Backups of virtual machines that are hosted on local volumes complete successfully. Backups of virtual
machines that are hosted on storage area network (SAN) volumes fail. You receive the following error message
in the Windows Event Log:
Backup failed with the following error
An error occurred:
Writer ‘Microsoft Hyper-V VSS Writer’ reported an error: ‘VSS_WS_FAILED_AT_FREEZE’. Check the
application component to verify it is in a valid state for the operation.
You need to ensure that all backups can complete successfully.
What should you do?
A.
On the Cluster Shared Volume (CSV), grant administrator rights to the DPM server computer account.
B.
On all Windows servers in the environment, enablethe Volume Shadow Copy Service (VSS).
C.
Install and configure the Volume Shadow Copy Service (VSS) hardware provider from the SAN vendor.
D.
On virtual machine files hosted on the Cluster Shared Volume (CSV), grant
The data copy process can be handled by the file system or by specialized hardware; in the latter case a hardware VSS provider abstracts the functionality to the operating system. Applications can provide specific support for VSS through VSS writers which control how data is set to a consistent state at the beginning of a VSS operation and maintain that consistency throughout the process, among other functions.
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Answer C
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