A good site about RAID.

AC&NC has published a nice light reference site for all the various types of RAID configurations out there. RAID, which stands for Redundant Array of Independent Disks, involves hooking together a bunch of smaller (and usually cheaper) drives, rather than relying on one massive (expensive) drive. Depending on your configuration, you can get substantial speed gains, fault-tolerant storage, or both.

The tutorial walks you through the basic characteristics of each configuration scheme, with an illustration of how the drives and data are related. Beneath each picture is a brief explanation of the set-up, and a list of advantages of disadvantages.

Right now I'm evaluating between RAID 1 and RAID 5 for my future, "once and for all" data bank project. More on that later.

AN&NC's "RAID.edu" tutorial site