To configure a RAID array under NT a few years ago, you had to boot your NT system into DOS mode, run a utility to create the RAID array, and then format the array under NT with a file system. Later, if you needed to add an extra disk to the array for capacity or performance, you had to back up the data on the array, go into DOS mode, reconfigure the array, reformat the array, and restore the data. Fortunately, you don't have to endure this process today. When selecting your RAID array, ensure that it includes tools to let you dynamically add hot-swappable disks. This functionality allows for a truly scalable RAID array solution.