Migrating from the System VSS Provider to a Hardware VSS Provider

If you are using the default system VSS provider and want to begin using the hardware VSS provider, you must do the following:

1. Install the hardware VSS provider on the host computer and ensure that your Storage Area Network (SAN) is configured for hardware snapshots.
   
   
2. Delete the %Programfiles%\Microsoft DPM\DPM\Config\DataSourceGroups.xml file from the System Center 2012 – Data Protection Manager (DPM) server.
   
   
3. Set the following registry key on the DPM server:
   
   

    

   Key	HKLM\Software\Microsoft\Microsoft Data Protection Manager\2.0\Configuration\MaxAllowedParallelBackups
   Value	Microsoft Hyper-V
   Data	3
   Type	DWORD

4. To complete this process, you must run the Modify Protection Group Wizard for each protection group that protects the virtual machines on this cluster.