What I want to do: Archive my photos and back up my computer. Considerations: I'm a professional photographer and at some point I will get a server, but for now I can do without it. I need two exact copies of each drive containing photos. One will remain in the office while the other will be in a secondary location. Separately, I'd like to have a backup boot drive so if my main computer drive fails, I can insert the new one and go. What I currently have: Mac Pro 2.8 octo w/ stock 320GB HDD. 500GB drive in external enclosure (1/2 full) 500GB Maxtor external drive (full) 250GB drive in external enclosure (full) I feel like every option I come up with is too complex. Maybe someone can think of sometime simple.