Behind the door, you'll find slots for four SATA hard drives. While it supports up to four 1TB hard drives, our test unit came preloaded with four 250GB Hitachi drives. The sleds the drives sit in are easy to insert and remove and lock in very well. They're 100x better than the ones in Dell's servers.
That's it for now. I'll be adding more pictures and screenshots as I get further into my review. If you have any questions, let me know.