Look at your motherboard manual on how to rebuild a failed array.
RAID 1 carries less risk when run on a motherboard RAID controller than RAID 0 does. Further, the implementation of RAID 1 is usually such that the drives can be used outside the RAID 1 if it breaks. In other words, if your motherboard dies, you can generally take one of the drives of the RAID 1 and put it in another computer by itself, and read your data like normal.
The Raid Migration Adventure http://www.tomshardware.com/reviews/RAID-MIGRATION-ADVENTURE,1640-8.html