Welcome to AT...
Yes it is possible to GHOST SCSI drives. I use Norton's GHOST and it does it very well. However, as your probably aware DOS cannot see NTFS drive/partitions and I presume you are running NTFS as opposed to FAT32. If you are running NTFS and dont have a FAT32 drive/partition you will need to make one as Norton's GHOST needs a FAT32 drive to save the image on. It will read NTFS but not write to NTFS only FAT32.
DRIVE IMAGE is suppose to be able to do it but I have no experience with this piece of software.
Hope that helps.
[edit]
Sorry, I should have read it properly. In terms of GHOSTING RAID drives I'm not sure, but it is likely that this can be done I would have thought.