Hi! I'm about to buy the Mac Pro with 4 TB and the Raid Card (among other things). I'm gonna use it to create video with Adobe Premiere Pro. It is possible that i need additional storage, and I'm definitely gonna want back-up! How do I go about that? My first thougt was several harddrives in some sort of tower or case that i can connect via a firewire connection. Any thoughts are welcome, experience even more! Thanks!