Online 

Verifies that the application's disk group is in a valid campus cluster configuration. It detaches the site that the value of the FDSiteName attribute specifies. It then creates another disk group to be used for the fire drill on the detached site. 

Offline 

This re-attaches the site that the value of the FDSiteName attribute specifies back to the application's disk group. 

Monitor 

Monitors the DiskGroupSnap resource. 

Clean 

Takes the DiskGroupSnap resource offline. 

Open 

If the DiskGroupSnap resource has a parent resource that is not online, then it deletes the online lock file of the DiskGroupSnap resource. This marks the DiskGroupSnap resource as offline.