Thanks for the feedback Steve. I have been burned by “single disk failure” in the past and am wanting to hedge against such a possibility going forward. I have multiple 1Tb drives that I am using now but still have the single drive failure issue nagging at me. I spend A LOT of time now copying from one drive to another just to negate my fears. I realize the Drobo is just a proprietary RAID rig but if I am going to commit to ANY kind of RAID setup, then it kinda becomes proprietary at that point anyway methinks. Perhaps when the 3 & 4 Tb drives hit the shelves I can just automate my back-ups to multiple drives. I hate to sound like a worry wart, but I can still remember that sick, sinking feeling when I lost all the stuff on the drive I lost a few months back. Not a good feeling. Thanks again for the reply.