Thanks for the reply!
The case im using is an Antec 900
http://www.antec.com/us/productDetai...?ProdID=15900#
It has 2 big fans in the front, 1 for each bay which holds 3 HD's each. So im placing 2 HD's in each bay.
Now about the raid. I have Abit AB9 Pro
It has a ICH8R 6x SATA (RAID 0,1,5,10) controller
I wrote the title of the thread incorrectly.