Abbreviation for Redundant Arrays of Independent Disks
A technology that combines multiple magnetic disk drives and uses them virtually as one.

RAID is defined as RAID-0 to RAID-6 and RAID-10 depending on its configuration. For server applications, RAID-1, RAID-5 or RAID-6 is used as importance is placed on data reliability. In addition, RAID-10 offering high speed and enhanced fault tolerance is also used.