I've been thinking about getting a RAID array for an iMac that I have. I have all kinds of data ranging from documents to media files. I was looking around at some external USB RAID enclosures and I'm just not sure whats the best set up for my iMac. It has a 1 TB HD installed and its almost maxed out. When I think RAID array I usually think of something connected to an Ethernet cable, through a network, that costs alot of money, and needs to be mounted in a rack. However it looks like there's a few companies that make USB RAID enclosures. I'm still not so sure on what to do here. Id really like to find something that has Firewire 800 over USB 2.0 for the transfer rate. Any suggestions?