Thanks.
An Article I was reading said that the user should have Backup Storage in case of a raid failure.
It also said ( or another post ) that cost wise that Raid 1+0 was better than Raid5 on the second disk failure.
For a newbie, it looks like the Holy Grail, when it fails it becomes a Holy Cow. 
The board I want to get has 6Gbs SATA. How can I push that to the limit?
Do I need SSD's or many HD's?
Can a raid system beat the bloat?
I remember this review when I last upgraded in 2007.
http://www.tomshardware.com/reviews/cheap-raid-ravages-wd-raptor,1562.htmlUsing 2 raptors 0+1 was pretty impressive. And still is..
@sknight, ZFS ? Ur kidding me. With ZFS (pooled) you don't know the impact of a drive failure as you dont know which drive has which data. Very handy. Thats why Symantec(Veritas) make so much money on Sun.
