Bull****. 8 HDD's? That's a super computer..
Dude, there is only 3.5 Tb in it. At the time I build it, there were only 320's and a year later 500's available. A supercomputer is a computer with water-cooling, a high class GPU card and much more in it. This is just an average one.
I think about replacing all the hard disks in it for 3Tb ones, but I'm waiting for the price to get cheaper.
And my bad habit is, I can't sell or throw away my old hard drives so I guess I will buy a drive bay for them, put them in raid and use it as an external backup drive