If these errors are persistent, there might be a compatibility problem with the hardware related to the partition. The drivers for the controller and the hard disk should be updated if possible. In the worst case, they may have to be replaced.
This warning was logged when rebooting a server remotely. GoToMyPC was being used to log in remotely to a client PC which was logged into the server in question remotely using MSTSC and rebooted the server this way. This was the first time that the warning has been displayed.
There were backup jobs running on the server in question but all were failing for multiple reasons: media was bad several local Backup Exec services failed a remote agent was hung. These all happened at the same time. Local BE services were able to be restarted but the remote agent service wouldn't shut down despite using multiple methods (e.g. SysInternals' pskill command). A reboot of that server was required.
Immediately after this entry was logged it was followed up by an error using event ID 7034 with the source Service Control Manager Eventlog Provider then followed by a warning using event ID 50 with the source of mrxsmb.