Cluster Quorum Disk failing inside Guest cluster VMs in Hyper-V Cluster using Virtual Disk Sharing Windows Server 2012 R2

Question

Hi, I'm having a problem in a VM Guest cluster using Windows Server 2012 R2 and virtual disk sharing enabled. 
It's a SQL 2012 cluster, which has around 10 vhdx disks shared this way. all the VHDX files are inside LUNs on a SAN. These LUNs are presented to all clustered members of the Windows Server 2012 R2 Hyper-V cluster, via Cluster Shared Volumes.
Yesterday happened a very strange problem, both the Quorum Disk and the DTC disks got the information completetly erased. The vhdx disks themselves where there, but the info inside was gone.
The SQL admin had to recreated both disks, but now we don't know if this issue was related to the virtualization platform or another event inside the cluster itself.
Right now I'm seen this errors on one of the VM Guest:
 Log Name:      System
Source:        Microsoft-Windows-FailoverClustering
Date:          3/4/2014 11:54:55 AM
Event ID:      1069
Task Category: Resource Control Manager
Level:         Error
Keywords:      
User:          SYSTEM
Computer:      ServerDB02.domain.com
Description:
Cluster resource 'Quorum-HDD' of type 'Physical Disk' in clustered role 'Cluster Group' failed.
Based on the failure policies for the resource and role, the cluster service may try to bring the resource online on this node or move the group to another node of the cluster and then restart it.  Check the resource and group state using Failover Cluster
Manager or the Get-ClusterResource Windows PowerShell cmdlet.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-FailoverClustering" Guid="{BAF908EA-3421-4CA9-9B84-6689B8C6F85F}" />
    <EventID>1069</EventID>
    <Version>1</Version>
    <Level>2</Level>
    <Task>3</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2014-03-04T17:54:55.498842300Z" />
    <EventRecordID>14140</EventRecordID>
    <Correlation />
    <Execution ProcessID="1684" ThreadID="2180" />
    <Channel>System</Channel>
    <Computer>ServerDB02.domain.com</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data Name="ResourceName">Quorum-HDD</Data>
    <Data Name="ResourceGroup">Cluster Group</Data>
    <Data Name="ResTypeDll">Physical Disk</Data>
  </EventData>
</Event>
Log Name:      System
Source:        Microsoft-Windows-FailoverClustering
Date:          3/4/2014 11:54:55 AM
Event ID:      1558
Task Category: Quorum Manager
Level:         Warning
Keywords:      
User:          SYSTEM
Computer:      ServerDB02.domain.com
Description:
The cluster service detected a problem with the witness resource. The witness resource will be failed over to another node within the cluster in an attempt to reestablish access to cluster configuration data.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-FailoverClustering" Guid="{BAF908EA-3421-4CA9-9B84-6689B8C6F85F}" />
    <EventID>1558</EventID>
    <Version>0</Version>
    <Level>3</Level>
    <Task>42</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2014-03-04T17:54:55.498842300Z" />
    <EventRecordID>14139</EventRecordID>
    <Correlation />
    <Execution ProcessID="1684" ThreadID="2180" />
    <Channel>System</Channel>
    <Computer>ServerDB02.domain.com</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data Name="NodeName">ServerDB02</Data>
  </EventData>
</Event>
We don't know if this can happen again, what if this happens on disk with data?! We don't know if this is related to the virtual disk sharing technology or anything related to virtualization, but I'm asking here to find out if it is a possibility.
Any ideas are appreciated.
Thanks.
Eduardo Rojas

Answer 1

Hi,
Please refer to the following link:
http://blogs.technet.com/b/keithmayer/archive/2013/03/21/virtual-machine-guest-clustering-with-windows-server-2012-become-a-virtualization-expert-in-20-days-part-14-of-20.aspx#.Ux172HnxtNA
Best Regards,
Vincent Wu
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