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Enabling or disabling VSS shadow copies for Hyper-V over SMB backups

If you use a VSS-aware backup application to back up Hyper-V virtual machine files stored on SMB shares, VSS shadow copy must be enabled. You can disable the VSS shadow copy if you do not use VSS-aware backup applications. The default is to enable the VSS shadow copy.

About this task

You can enable or disable VSS shadow copies at any time.
  1. Set the privilege level to advanced: set -privilege advanced
  2. Perform one of the following actions:
    If you want VSS shadow copies to be...Enter the command...
    Enabledvserver cifs options modify -vserver vserver_name -shadowcopy-enabled true
    Disabledvserver cifs options modify -vserver vserver_name -shadowcopy-enabled false
  3. Return to the admin privilege level: set -privilege admin

Example​

The following commands enable VSS shadow copies on SVM vs1:

cluster1::> set -privilege advanced
Warning: These advanced commands are potentially dangerous; use them
only when directed to do so by technical support personnel.
Do you wish to continue? (y or n): y 

cluster1::*> vserver cifs options modify -vserver vs1 -shadowcopy-enabled true

cluster1::*> set -privilege admin