Over the past few years I've built up a really ugly and messy storage solution. It includes an iMac(160GB) with 500GB Firewire Drive, 160GB USB Drive, 120GB USB Drive, and 80GB USB Drive all attached. Then a MacBook with 500GB, and then an old Windows Machine with 200GB inside of it connected the network. The only thing backed up is the Macbook because my brother was kind enough to let me use his Time Machine backup drive because he had spare room. So needless to say, I need a better, more compact, more secure solution. The easiest answer to me seems to be Drobo, which I can get for $310 on Amazon after rebate. But I did also see this solution on Newegg, Sans Digital 8 bay enclosure. I would need to get something to be able to connect the eSata to my iMac, luckily Newegg also has this. Now I sorta feel like the Sans Digital option is more expensive and troublesome, but it is 8 bays, which gives me more options in the future. I'd probably first start with 3 2TB drives in RAID 5. Would anyone know how easy/difficult it is to add additional drives to a setup like this? This is gonna end up being a big purchase for me so any advice is welcome, even if it's suggesting something completely different, I'd appreciate the help.