[CentOS] Suggestions for partition

> for the simple fact that a dead disk won't bring down your system and 
> halt your builds until your rebuild the machine. But if you really only 
> care about max speed and are not worried about crashes & their 
> consequences, then replace the raid1 with raid0.

just remember that grub does NOT support raid0. you have to put / or at 
a minimum /boot on a raid1 device