I was thinking the same thing -- my son, born recently had a high hemoglobin count that contributed to his Jaundice and a night under a few sets of blue lights.... Quite a high count, scary for a parent.
The doctor said it was likely due to an excess of blood through the cord at birth.

If your setup supports it, wouldn't an 8-disk raid5 be most efficient for your uses?

I don't know, a dedicated 4 disk raid0 for your games? Seriously? Is the load performance of your games that important?

*shrug*