RAID Setup

This is very specific to the manufacturer of your RAID hardware. If you are staring fresh and do not have hardware documentation, then start here:

http://www.highpoint-tech.com/
http://www.psidisk.com/
http://www.syred.com/
http://www.raidweb.com/

You need to decide on which OS you want to use. Linux is also an alternative. There are a bunch of RAID whitepapers on the Internet for "RAID setup" ; this search will give you linux as well.