Article ID: 2801056 - View products that this article applies to.
The following Microsoft Knowledge Base articles describe issues that occur after you deploy System Center 2012 DPM. Click the article numbers to view the articles in the Microsoft Knowledge Base. To resolve the issues that are described in the articles, apply the hotfixes that are included in the articles.
(http://support.microsoft.com/kb/2799728/ )Virtual machine enters a paused state or a CSV volume goes offline when you try to create a backup of the virtual machine on a Windows Server 2012-based failover cluster
(http://support.microsoft.com/kb/2801054/ )VSS_E_SNAPSHOT_SET_IN_PROGRESS error when you try to back up a virtual machine in Windows Server 2012
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.