[CentOS] md raid 10

> the problem with that is when your boot drive dies your can't boot...with
> ubuntu at least if any drive dies i can stilll boot off of the other 3..:)

You don't need a boot drive, you only need a *boot partition*.

So, you create a small *boot partition* with RAID1 and then allocate the 
rest of your drives to a RAID10 array.

You will still have redundancy (RAID1) on your boot partition.