Specifications

GL–3
Compaq HSG80 Array Controller ACS Version 8.4 Configuration and CLI Reference Guide
built-in self-test A diagnostic test performed by the array controller software on the controller’s
policy processor.
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.