I moved an Exchange database last night from Local Disk N:\ to Local Disk R:\ and came to the discovery that DPM doesn’t notice that change automatically.
I got the following error:
DPM is unable to continue protection for Second Storage group x because the change tracking information is corrupt (ID 30156 Details: Do not Attach the filter to the volume at this time (0x801F000F))
When I viewed the details of the replica path of the storagegroup the old source was still visable.
I had to go trough the Protection Group Modify Wizard of the protection group without making any changes before DPM would see the change.