[CentOS] RAID5 or RAID50 for database?

> Just asking. I don't use CentOS as a desktop OS, so the firefox problem 
> doesn't bother me at all, but CentOS 5 is an upgrade in many regards, 
> and I find it very stable. I have yet to try RAID10 with it though, as 
> soon as I can get my hands on enough spare HDD's :)
> 

I believe you cannot do it via the installer yet. Can anybody confirm 
the presence of raid10 personality in Centos 5?