diskmgmt.msc Now youve got a system with two RAID arrays created from a pair of drives. Just make sure to keep the most valuable data on the RAID 1 array. That way, if one drive does go South, the data on that drive is still recoverable. With the prices of drives plummeting, RAID arrays make more sense, particularly RAID 1 arrays. As we collect more valuable digital "stuff"—pictures, music, home movies, documents—RAID 1 be-comes an increasingly useful option. In the long run, it may be more useful in the real world than RAID 0.