Adaptec ASC39320A-ROHS-KIT Betriebsanweisung PDF herunterladen (Seite 198)

Glossary-5

Glossary

physical resources

The Adaptec Family Adapter products, channels, and SCSI devices

installed in the server.

poll

A validation of discovery information.

RAID

Acronym for Redundant Array of Independent (Inexpensive)

Disks. Coined in 1987 by researchers at the University of California

at Berkeley to describe a set of disk array architectures that provide

fault tolerance and improved performance.

RAID 0 (striping)

An array where data is distributed, or striped, across the disks in

the array.

RAID 1 (mirrored)

An array that uses a single pair of disks. Both disks in the pair

contain the same data.

RAID 10 (mirrored striping)

An array that uses from two to eight pairs of disks. Both disks in

each pair contain the same data.

rebuild

The regeneration and writing onto one or more replacement hard

disks of all the data from a failed hard disk in a redundant RAID

array. Rebuild is usually performed in the background while

applications are accessing data in the array.

reconstruction

See rebuild.

redundancy

Maintaining duplicates for any given component in a system so the

system can automatically replace a failed component with a

working substitute. A parity RAID array’s members are redundant

since surviving members may collectively replace the data from a

failed hard disk.

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Adaptec ASC39320A-ROHS-KIT Betriebsanweisung Seite 198