FT Orphaning RAID 0

I have a NT 4.0 Terminal Server running software mirroring with 2 Hot swap compaq SCSI drives on a compaq 1600.. I got an error this morning “System Error- FT Orphaning- A disk that is part of a fault tolerant volume can no longer be accessed.” Under Disk Administrator I can not see my DISK 0. It says OFF-LINE under that. Could anyone help me with some good pointers on how to repair my mirrored volume?? HELP !!!!