DPM Error 30126 DPM could not find find a valid recovery point on disk Or ‘Replica Inconsistent’ showing against System State and Bare Metal Recovery on Protected Server

This error normally occurs due to one of the following two possible causes:

• Not enough disk space is available on the protected machine to store a backup of the system state files
• The Windows Server Backup feature is not installed on the protected machine (Windows 2008 or Windows 2008 R2)

Solution:
Simply install the Windows Server Backup feature on to the protected machine from Server Manager. Installation of this feature doesn’t normally require a reboot.

If the protected machine doesn’t have enough disk space to store a backup of the system state files (you’ll need 10-12Gb free on the system drive by default to store these files) you’ll need to create some space on the system drive, or add another disk to the machine and modify the PSDataSourceConfig.xml file to allow DPM to use the new location.

The PSDataSourceConfig.xml file is normally located at %SystemDrive%\Program Files\Microsoft Data Protection Manager\DPM\DataSources. Modify the <FilesToProtect> section of the xml file to point to the new drive added. Maybe that you may need to remove protection for the machine from the DPM 2010 console and then re-enable protection to get DPM to read the new location for backup files from the PSDataSourceConfig.xml file.