A 1080i movie takes some 1.3GB / hour and this is without loosing too much quality. A 2TB HDD can store how much of that? 1500 hours of 1080i material. So my point would be, that John Doe is good to go with one ore two external USB-HDDs for storing big data he doesn't want to loose. Have your big case with all your files connected and hope that your place never gets hit by lightning crashing all your HDDs. You never want to store data on a permanently attached HDD sir, even if your machine is "protected" by an APC.