More and more people are beginning to prefer a RAID array to a simple hard drive. Private users are switching to take advantage of significantly higher transfer rates. Professional users are trying to protect themselves against any drive defects. RAID controllers are popular, practical add-ons that motherboard producers like to slap onto their products. In the simplest of cases, you'll get an additional IDE controller for hooking up even more drives. If you like to lean on your computer, you can create your own RAID array from two or four hard drives. Article @ THG