[CentOS] question on RAID performance

Have you tried RAID 10? It combines the security of RAID 1 with the speed of 
RAID 0. dmraid supports this RAID type.

> I was wonder what experiences there are out there with using RAID-X for
> performance increases. I do use RAID-1 (2 disks) but am interested in
> attemtps to gain higher R/W performance. Do the RAID-5's etc give 
> noticeable performace increases?