Glossary

Q

quick init

An array initialized using the Quick Init option is available immediately, with no on-going background controller activity. All data written to an array that has been quick initialized is protected. An array created using this option will remain in a Quick Init state, and for RAID 5 and 50 write performance will be degraded, until a verify with fix is run on the array.

R

RAID

Redundant Array of Independent Disks (alternative definition Redundant Array of Inexpensive Disks). Redundancy, however, is not a feature of RAID 0.

RAID 0

Single-level array consisting of two or more equal-sized segments residing on different disks. RAID 0 distributes, or stripes, data evenly across its respective drives in equal-sized sections. See also single-level array.

Also known as a stripe set.

RAID 0/1

See RAID 10.

RAID 1

Single-level array consisting of two equal segments residing on two different disks. Provides redundancy by storing the same data on two components.

Also known as a mirror set.

RAID 5

Single-level array consisting of at least three equal-sized segments with the capacity of one segment used for parity data. In a RAID 5, parity is distributed in stripes across all segments.

A-10