"RAID works thanks to the help of its system of overlapping the concurrent I/O. Because of this it also see's many performance increases thanks to this overlapping of the I/O. Another effect of the overlapping is the ability to be completly invisible to the operating system as seperate drives."
FULL STORY @ VOIDYOURWARRANTY (http://www.voidyourwarranty.net/reviews/?r1=raidtutorial/index.php3)