Backstory: My wife has a photography business, and I do photo/video stuff on the side. I have about 4TB of data distributed across 3 drives in my Hackintosh. For backup, I had 2 copies of each of the 3 drives (8 drives total), which were backed up using CarbonCopyCloner every 12 hours. Every 2 weeks or so, I'd swap the backup drives and move the other ones to an offsite location. Everything was great. Last week, I bought a refurbished 27" iMac 3.4. It's amazing. The only problem is that I'm limping along with a single USB hard drive dock. I need 6TB+ of fast(ish) data. FW800 is as slow as I'd want to go. I go back and forth with doing the eSata mod. I'm planning on throwing an SSD in alongside my 1TB internal (I'll save that can of worms for another thread). The 1TB would be great for a scratch disk/boot camp, so I don't really want to lose it, much less cut a hole in my iMac. I know I could get a NAS and be done with it, but I dislike the extra interface and web management. Plus, speed is key My goal is to eventually have a 6TB+ RAID5 with an external 6TB backup. Here are the options I've considered: $344 - 6TB WD MyBook Studio Edition II: Inexpensive and could later be used as a backup when I get a Thunderbolt RAID setup. FW800 interferes with sleep $440 - 6TB OWC Mercury Elite Pro Dual Drive + 2 Hitachi Desktar 7k3000 Raid 0: Any better than the WD Mybook? $940 - 9TB OWC Mercury Elite Pro Qx2 + 4 Hitachi Desktar 7k3000 Raid 0: almost as expensive as I imagine a Thunderbolt solution, without the extra speed. $1000 - 3TB Pegasus R4: Not enough space and somewhat negative reviews $1500 - 4.7TB Pegasus R6: Same as above The only other TB disk that has come out (Lacie) is way overpriced. Should I wait for an OWC Thunderbolt bay? Am I overlooking something? tl;dr: Need 6TB+ storage, no reasonable Thunderbolt RAID 5. Help.