I started noticing lately that my Hard drive had been making some weird noises and acting weird as well. By that I mean it would make the same sound it makes when it first starts up... like a clicking on kinda thing. Then my games or whatever I had running would lock up. It's a brand new drive so I figured it's just overheating. 7200rpm and all.
So! I wanted to cool it down a little, but I really didn't want to add another fan, making my xbox even louder than it already is (I like it ultra silent).
The hard drive tray seems a little shitty in terms of design... it basically traps all the heat right right between the hard drive and the tray itself. So I decided to let that heat out, so it could get sucked out by the fan.
I don't have access to a dremel so I used my drill.
Here's the standard hard drive tray with the hard drive in it:


And my drill ready to go:

All the holes drilled:

And the end result, holes drilled + hard drive in. Now the heat can escape.


The end result was a 5C drop in temperature (from a 40C average to 35C) of my hard drive. I haven't had the original problem since.. so hopefully this did the job. It doesn't look to pretty but hey, no one will ever see it anyway.
Happy modding