beautypg.com

HP Array Controller HSG V8.7 Software User Manual

Page 529

background image

Glossary

G–3

byte

A binary character string made up of 8 bits operated on as a unit.

cache memory

A portion of memory used to accelerate read and write operations.

CCITT

Acronym for Consultive Committee International Telephone and
Telegraph. An international association that sets worldwide
communication standards, recently renamed International
Telecommunications Union (ITU).

CDU

Cable distribution unit. The power entry device for StorageWorks
cabinets. The CDU provides the connections necessary to distribute
power to the cabinet shelves and fans.

channel

An interface which allows high speed transfer of large amounts of data.
Another term for a SCSI bus. See also SCSI.

chunk

A block of data written by the host.

chunk size

The number of data blocks, assigned by a system administrator, written
to the primary RAIDset or stripeset member before the remaining data
blocks are written to the next RAIDset or stripeset member.

CLCP

An abbreviation for code-load code-patch utility.

CLI

See command line interpreter.

coax

See coaxial cable.

coaxial cable

A two-conductor wire in which one conductor completely wraps the
other with the two separated by insulation.

cold swap

A method of device replacement that requires the entire subsystem to
be turned off before the device can be replaced. See also hot swap and
warm swap.

command line
interpreter

The configuration interface to operate the controller software.

configuration file

A file that contains a representation of a storage subsystem’s
configuration.