I'm having trouble adding a protection group for a file server cluster on our secondary DPM 2010 server. When I try to expand the cluster to select the volumes it gives me this error:
"DPM was unable to get the list of data sources on Cluster Group.ClusterServer.domain.com that are protected by the primary DPM server DPMPrimary.domain.com
Make sure that DPMPrimary.domain.com is protecting the data sources for which you want to set this DPM server as the secondary server. If the problem persists, restart the DPMWriter service on DPMPrimary.domain.com
I have restarted the DPMWriter service on the primary, and even restarted both servers but the problem remains. . I was able to add it without a problem on the primary, and the backups have completed successfully.