Adaptec 1210SA - Serial ATA RAID Controller Podręcznik Użytkownika Pobierz pdf (Strona 47)

Glossary-8

Glossary

single-level array

Array created from one or more segments. See also volume, spanned

volume, RAID 0, RAID 1.

snapshot

Instantaneous read-only copy of an array at a precise point in time.

spanned volume

A simple volume that spans two or more drives.

stripe

Contiguous set of data distributed across all the disks in an array. A

striped array distributes data evenly across all members in equal-

sized sections called stripes.

stripe size

The amount of data in each section of a striped array.

striped array

See RAID 0.

task

An operation that occurs only on the RAID controller,

asynchronous to all other operations; for example, initializing a

disk or verifying an array. Some tasks can take an extended period

of time, particularly if the RAID controller is also performing

intensive data I/O while the task is running.

verify

Low-level check that a drive, logical device, or hot spare is good. In

a RAID 1, verify is a low-level check that contents of both

members’ segments are consistent and, optionally, corrects errors

while assuming that the master drive is correct. In a simple

volume, verify performs a low-level check that the whole drive can

be read.

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Adaptec 1210SA - Serial ATA RAID Controller Podręcznik Użytkownika Strona 47