We have 2 of these installed http://www.marinecomp.com/apex.htm We need 3 to 4 terra bites of raw video sataII storage for a one year voyage. Trying to find a storage solution of 500gb western digital sata drives. I've looked at the 1U racks but they all have raid controllers and extra's. We've thought about standard external drives usb 2.0 or firewire. Can any one think of something I haven't? thank you!