Procom CD Server Part 1
Be sure to watch part 2 as well, where I discuss the software side. (Computers are supposed to make your life easier, but the two videos were in differing formats and after several tries that did not work out, I just decided to upload the two parts separately.)
People have been asking about this thing, so here is what it is. Some of these units exchanged one CD-ROM drive for a SCSI hard drive that was used as a CD cache.