1. An acronym for Redundant Array of Independent Disks, a family of techniques for managing multiple disks to provide desirable cost, data availability, and performance characteristics to host environments. 2. A redundant Array of Independent Disks.

An organization of suppliers and users of storage systems and related products whose goal is to foster the understanding of storage system technology among users, and to promote all aspects of storage technology in the market.

A redundant Array of Independent Disks

Any computer system storage product that implements RAID technology as described in RAID Advisory Board publications in some significant way. RAID-related products may include disk controllers, disk systems, disks, software, and test equipment.

The regeneration and writing onto one or more replacement disks of all of the data from a failed disk in a RAID Level 1, 3, 4, 5, or 6 array. Rebuilding can occur while distributor & reseller Applications are accessing data on the array’s virtual disks.

The inclusion of extra components of a given type in a system (beyond those required by the system to carry out its function).

A disk array in which part of the physical storage capacity is used to store redundant information about user data stored on the remainder of the storage capacity. The redundant information enables regeneration of user data in the event that one of the array’s member disks or the access path to it fails.

A disk available for use as or used to replace a failed member disk in a RAID array.