Offhost backup of VMWare Physical RDM volume on Equallogic Array
First I describe what I do today:
I have large Exchange volumes, so to back these up, I utilize offhost backups as it's a much faster backup. The volume is on an Equallogic array, and I connect that volume to my Exchange server via the Microsoft iSCSI initiator, straight through Windows. Windows in a virtual machine, running on ESX 4.1 server. Because I'm using the MS iSCSI initiator, VMWare has no idea about this volume. Basically it's as if this was a physical machine, connecting to my RDM volume. I backup this volume via Backup Exec 2010 R2, using the ADBO option, and the Equallogic HIT kit is installed on both my media server and my exchange server. This has worked well for some time.
What I want to do, is convert my volume to a VMWare RDM Physical Volume, because then VMWare knows about the volume, and I can leverage other replication products. Converting the volume is easy, I've already removed it from the MS iSCSI initiator, and added it as a physical RDM in my VM configuration.
The problem is actually backing up the volume, via offhost means, so I can keep the fast backup speeds. I tried to run my job as configured, and it fails. I presume this is because of a VSS issue, because the BE error is:
"VSS Snapshot error. The Microsoft Volume Shadow Copy Service (VSS) snapshot failed. Make sure that all provider services and tasks are running. Check the Windows Event Viewer for details."
Do I need to install a different VSS provider? Currently I have the Equallogic installed (via their HIT kit) and of course Windows, as this is a Windows Server 2008 R2 server. VMTools is also installed, so I understand that also has a VSS provider.
Essentially I need to know what I need from front to back, to make my off host backups work, when the volume is a VMWare Physical RDM volume.
Should I remove the Equallogic VSS provider? Should I install a BE VSS provider?