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I am using Microsoft DPM to backup data. The backups ran fine for months however recently I started getting messages that the data was not consistent. I ran the consistentcy checker but they failed for 4 of the protection groups. I am backing &nbsp;up data from a failover cluster and it seems to be that data is the issue, not all the data is inconsistent. After consistency checker failed I tried modifying disk space and modifying the protectect members in the group. If I try to add/remove the proctective group members DPM clocks continuosly and never expands. The same things happen if I try to add additional space. I have provided an attachment of what I see when trying to modify. <br />
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Your help is greatly appreciated.
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I am using Microsoft DPM to backup data. The backups ran fine for months however recently I started getting messages that the data was not consistent. I ran the consistentcy checker but they failed for 4 of the protection groups. I am backing  up data from a failover cluster and it seems to be that data is the issue, not all the data is inconsistent. After consistency checker failed I tried modifying disk space and modifying the protectect members in the group. If I try to add/remove the proctective group members DPM clocks continuosly and never expands. The same things happen if I try to add additional space. I have provided an attachment of what I see when trying to modify. 

Your help is greatly appreciated.

Microsoft DPM Backups

The term "Backup" means the methods and processes involved to copy computer data (system data as well as application data) to media other than the ones where the data originally live (disk, tape, optical, cloud). "Restore" in turn means the methods and processes involved in data recovery, i. e., bringing back copied computer data to their original location. Backup/Restore primarily serves as a means of protection against data loss, be it due to disaster, corruption or sabotage. It can also be used for recovering data from an earlier point in time and even for cloning machines or applications. There is a wide variety of backup/restore software available, from expensive commercial products to free or open source tools.

Storage Software

Microsoft server applications are those applications developed specifically, but not necessarily exclusively, on the Windows Server platform. In addition to well-known products like SQL Server, Exchange, Internet Information Services (IIS), Microsoft Dynamics, Forefront, Lync and Sharepoint, they include applications like Skype, BizTalk, Hyper-V, Groove and Commerce Server. Server applications are managed with the Microsoft System Center.

Microsoft Server Apps

Microsoft Virtual Server was a virtualization solution that facilitated the creation of virtual machines on the Windows XP, Windows Vista and Windows Server 2003 operating systems. Virtual machines are created and managed through a web-based interface that relies on Internet Information Services (IIS) or through a Windows client application tool called VMRCplus. Features included Linux guest operating system support, Virtual Disk Precompactor, symmetric multiprocessing (SMP), x64 host operating system support, the ability to mount virtual hard drives on the host machine and additional operating systems support, including Windows Vista, and a volume shadow copy writer.