I was looking for a backup solution for my Mac Mini and my G4 Powerbook. Initially I was looking for a dedicated machine to do backups but I didn’t have any old machines around to put a RAID setup in. I really don’t keep computers for that long, but this would have been a good use for it. Instead I looked into external hard drives that I could use to rsync data from my computers using cron. I searched Google for RAID enclosures and most of them uses RAID 0 stripping. I wasn’t looking for speed because I was using it as a backup unit so I searched some more for RAID 1 mirroring enclosures. Most of the time the drives were way too expensive or were so huge. It really wasn’t what I was looking for. I found one enclosure the OWC Mercury Elite enclosure that had the capability to perform RAID 1 with a firmware update. I ordered the unit for $130, and received it in a few days.