I have installed raid 0 on my new system. Once I had the files up and running I made an image/backup so in the event of a failure I will just reimage the drives.

I am running raid on a gigabyte p35 chipset and it runs fantastic. If setting up raid 0 for an OS then have a 3rd drive and store all your important data on that. I have 2x 80GB sata2 drives for the OS, a 200GB for data storage and 2x sata 120GB's in a non raid configuration.

I have stored my backup image on another 80GB drive I have which is not fitted to the computer and a backup on one of the 120GB's fitted to the system.