Created 18 years ago2006-08-02 18:24:27 UTC by RotatorSplint
In computing, RAID (a redundant array of inexpensive disks, also later known as redundant array of independent disks) is a system which uses multiple hard drives to share or replicate data among the drives. Depending on the version chosen, the benefit of RAID is one or more of increased data integrity, fault-tolerance, throughput or capacity compared to single drives. In its original implementations, its key advantage was the ability to combine multiple low-cost devices using older technology into an array that offered greater capacity, reliability, speed, or a combination of these things, than was affordably available in a single device using the newest technology.It's not very old. IIRC it's used today, mainly for servers and data backup.
It is also a popular choice for gaming systems where performance is desired, data integrity is not very important, but cost is a consideration to most usersIts pretty convincing comming from Answers.com