How are you gonna cool those harddrives?
Please read the TOS regarding links in signatures. We don't take kindly to that sort of thing. -The Mods
row of fans at top
The illustration is pretty vague, you are asking for opinions on a simple hardware arrangement. I don't know if many people will have much to say without more detailed imagery. The hardware arrangement is not as input inspiring as the design itself, try sketching up some plans on what you want it to look like and then it might make more sense regarding the component placement. As such, there isn't much to comment on. It is a start though, keep thinking.
"At the midpoint on the journey of life, I found myself in a dark forest, for the clear path was lost..." -Dante Alighieri
Agreed, we don't really have enough info to pass judgment.
You don't, however, want a HD-DVD drive - Blu-Ray won out a couple months ago.