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74-409 · Question #51

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…

The correct answer is C. Install and configure the Volume Shadow Copy Service (VSS) hardware provider from the. 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…

Monitoring and disaster recovery

Question

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?

Options

  • AOn the Cluster Shared Volume (CSV), grant administrator rights to the DPM server computer
  • BOn all Windows servers in the environment, enable the Volume Shadow Copy Service (VSS).
  • CInstall and configure the Volume Shadow Copy Service (VSS) hardware provider from the
  • DOn virtual machine files hosted on the Cluster Shared Volume (CSV), grant

How the community answered

(30 responses)
  • A
    3% (1)
  • B
    13% (4)
  • C
    77% (23)
  • D
    7% (2)

Explanation

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.

Topics

#VSS hardware provider#SAN backup#DPM#Hyper-V VSS Writer

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