well...are you worried about data loss if/when a drive breaks down? the reason I am asking is that different raid arrays are designed for different things...some raid dont have any redundancy...but they are screaming fast....others have complete redundancy..but don't offer alot for speed...and there are others in between....So i guess you need to figure out what you want as far as hard drives. I am guessing by the speed (10k)[are these sata??] drives..that you want speed and not redundancy...in this case I would go raid0..which that mobo does support....but if you want to split it..go with the raid0+1 which is a bit faster, but has some redundancy built in...your mobo already supports this too...
I hope this helps get your going