V-79-57344-38769 - Backup of 2012 R2 Hyper-V virtual machines completes with an exception that the virtual machine was backed up offline
Article ID: 100014267
Updated On:
Description
Error Message
Following Exception in backup job log:
V-79-57344-38769 - Virtual machine 'ServerName' was backed up using an offline backup, therefore the VHD / VHDX files are only crash consistent. File-level recovery can be performed, but results may be unpredictable. Application-level recovery cannot be performed for this virtual machine.
Microsoft-Windows-Hyper-V-VMMS-Admin event log shows following warning:
Event ID: 10103
Description: The virtual machine 'X' cannot be hot backed up since it has no SCSI controllers attached. Please add one or more SCSI controllers to the virtual machine before performing a backup. (Virtual machine ID
Cause
The snapshot process for Hyper-V 2012 R2 has been re-written. A great deal of the work done during the snapshot creation process has been moved from the Hyper-V host to the guest. In order for the new snapshot process to function correctly, the VHD / VHDX files need to be hot-added to the guest. IDE controllers are not suitable for the hot-add process and hence there is a need for SCSI controllers.
Resolution
Add a SCSI controller to the problem VM. There is no need to attach a disk to the SCSI controller.
Issue/Introduction
Additional Information
