When trying to do a backup of the server I get the following messages: Tape device reported an error on a request to get device status. Error reported: hardware failure Event ID: 11 Source: 4mmdat Desc.: The driver detected a controller error on \device\tape0 Also, before I got the following message: Event ID: 7026 Source: Service Control Manager Desc: The following boot - start or system - start driver(s) failed to load: 4mmdat Any help would be appreciated.

It is pretty clear that the OS can't talk to the tape unit. Is the tape unit on and have proper termination? Cable connecting the scsi device OK? Do you see, when you boot up, your scsi cards announcement and does it list the tape drive? If it does not list the tape drive you either have a tape drive failure [replace it] or cable/terminator have failed.