Virtual Domain Controllers in 2012 Failover Cluster. Time Skew

Hi All,
Not sure if this is the correct space for this topic, however i'll give it a go anyway.
We have a 2 Hosts (HP DL385) Windows Server 2012 Failover Cluster.
Storage is provided by a 12 Bay NAS with iSCSI connections (This is catering for CSV's and Quorum)
We are running 2 Virtual domain controllers (2008R2)
The issue we experience is that if the cluster goes down, and when it comes back online the time on the domain controllers (one or the other or both) skews by any where up to 3 days which causes havoc for our office until we can resync clocks with the PDCe.
Time Synchronisation Integration Service is disabled on both Domain Contollers
A few days back we need to reboot the storage on the cluster, and the tasks performed were as follows:
-Power off all virtual machines (Graceful Shutdown)
-Put all CSV's into maintenance mode
-Offline Disk Witness to Quorum
-Rebooted Storage (Waited until it came back online)
-Online Quorum Storage (Successful)
-Bring CSV's out of maintenance mode (Successful & Browsable)
-Power on all Virtual Machines (Successful)
This is where the time Skewed and caused headaches. The time for some reason went to 2 days 11hrs in the past on 1 domain controller.
With this DNS lookups failed to work, Cluster services failed, Cluster Aware Updating Failed, RDP to VM's (and Virtual Hosts) by DNS Name failed (Date time error) 
There doesn't seem to be anything in the EventLog except for date/time stamp on events being 2 days in the past.
Now this is why i'm not sure if the issue is cause by fail over clustering, or is an issue with the domain controllers.
Any advice regarding this or if anyone has seen this behaviour before any info would be great
Thanks
Rob 

Hi Rob,
Does both this two DCs on your cluster VM and there have not others DCs? Microsoft recommends that files for virtualized domain controllers be placed on non-CSV
disks, Non-CSV disks can be brought online without authentication. Because non-CSV disks can be brought online more easily.
For virtual machines that are configured as domain controllers, it is recommended that you disable time synchronization between the host system and guest operating
system acting as a domain controller. This enables your guest domain controller to synchronize time from the domain hierarchy, please confirm your PDC time is always correct.
The related KB:
Running Domain Controllers in Hyper-V
https://technet.microsoft.com/en-us/library/d2cae85b-41ac-497f-8cd1-5fbaa6740ffe(v=ws.10)#deployment_considerations_for_virtualized_domain_controllers
Things to consider when you host Active Directory domain controllers in virtual hosting environments
http://support.microsoft.com/kb/888794?wa=wsignin1.0
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  • Win Server 2012 Failover Cluster - Error: Failed to bring cluster disk online

    Hi Technet
    I'm currently running running 2 VMs Win Server 2012 and would like to test Failover Clustering for one of our FTP server
    I've added on both servers an additional partition, formatted and Online
    One of the drives comes Online but cannot bring the 2nd disk online from the cluster manager
    Error: failed to bring resource online - clustered storage is not connected to the node
    Assistance would be greatly appreciated
    Thank you
    Jabu

    Hi jsibeko,
    Since the VMware offer the MSCS shared storage solution themselves, I suggest you first ask VMware whether that shared storage is supported with your vSphere edition, I found
    some VMware KB about the VMware shared storage for MSCS, may you can get more tips.
    The VMware KB:
    Microsoft Clustering on VMware vSphere: Guidelines for supported configurations (1037959)
    http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1037959
    Microsoft Cluster Service (MSCS) support on ESXi/ESX (1004617)
    http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1004617
    I’m glad to be of help to you!
    Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

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