RAID for Redundant Array of Inexpensive Disks.
For those who have been into trouble with data partition lost because of a crash, a bad disk sector or whatever disk problem or simply wanted to know why their motherboard is offering it, you might have checked it already.
For those who didn't and that think disk performances and reliability is one of an important feature, I think you might be interested in these two:
It is not complicated and it can save you from some computer hell. It also can increase significantly disk access times both with readings and writings. Furthermore, some combinations are possible between RAID formats that will allow both performances and reliability. When you see how inexpensive are disk drives these days, I can assure you it is worth a try.