Every so often since installing FP2 we get GRT errrors when backing up virtualized domain controllers. We've never seen this before on 2015 or 2015 FP1.
Specifically in this case it's a 2012R2 backup server backing up a virtualized 2012R2 domain controller on a 2012R2 Hyper-V server using the core agent to backup the virtualized resources. Agents are all up2date. Its strange it does not happen on every backup, about half of all the backups complete without any exceptions. This is an isolated test network with only a couple machines and user accounts.
Backup- VRTSRV::\\CORE02\Hyper-V?Virtual?Machine\CONTOSO-D2
V-79-57344-38747 - Backup Exec was unable to prepare Microsoft Active Directory resources for Granul...
I read in the notes for FP2 that some fixes were implemented for VMWARE GRT backups of Active Directory. Just putting 2 and 2 together here but maybe this fix has some lingering issues now with Hyper-V due to the fixes implemented for VMWARE?
As a workaround we can rely on GRT backups of the dedicated domain servers rather than the GRT backups of the virtualized instances.
