KB ID : 104025
Products :
Published : March 28, 2016
Created : March 28, 2016
Last Modified : April 26, 2016

Cause

This message normally occurs if a VM configured for backup from Hyper-V host has a passthrough disk.

Solution

Passthrough disk is not supported. Please exclude the passthrough disk from the VM and run the backup.

More Information

VM's with passthrough disk is not supported. If a VM has one normal disk and one passthrough disk, then the passthrough disk will be skipped and the normal disk will be backed up.

Currently Vembu VMBackup does not support backup of passthrough disks as it uses Hyper-V VSS writer to take the backup of the virtual machine which is not supported for Passthrough Disks (Microsoft limitation).

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