Redundant Array of Inexpensive Disks (RAID)
Low cost, high performance, 3.5-inch hard-disk drives dominate the storage systems for all practical purposes. But storage and reliability requirements for the high-end enterprise systems exceed the features available with the single drives. That's were Redundant Array of Inexpensive Disks (RAID) systems are essentially useful with the highend systems.
RAID technology was developed to address the faulttolerance and performance limitations of conventional disk storage. It can offer fault tolerance and higher throughput levels than a single hard drive or group of independent hard drives. While arrays were once considered complex and relatively specialized storage solutions, today they are easy to use and essential for a broad spectrum of client/server applications.
RAID technology was first defined by a group of computer scientists at the University of California at Berkeley in 1987. The scientists studied the possibility of using two or more disks to appear as a single device to the host system....
