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Glossary
C
C (1) Celsius. (2) Centigrade.
camera A system that reads volume serial number
labels on cartridges, instead of scanning the labels
with a laser. A camera performs faster and more
accurately than a laser scanner.
CAP See cartridge access port.
cartridge A storage device that consists of
magnetic tape on supply and take-up reels, in a
protective housing. (IBM)
cartridge access port (CAP) A device in the
library that allows an operator to insert or remove
cartridges during library operations.
cartridge drive The unit that houses the
magnetic-tape transports and controllers that store
and retrieve data for the host system in a cartridge
subsystem.
cartridge tape A composite of the plastic
housing and the magnetic tape.
catalog (1) The inventory of all cartridge tape
storage locations in a library; this inventory is by
library number, panel, row, column. (2) A stored
list of backed up files and directories and the
locations of the backup copies.
cell The location in the library in which a
cartridge is stored.
cleaning cartridge A cartridge that contains
special material to clean the tape path in a drive.
cleaning cells See reserved cells.
client server The primary computer on a
network, with which other computers interact. A
server is a processor, usually composed of a central
processing unit and memory, that typically
communicates with peripheral devices over
channels or networks, to perform input/output
operations such as network control. It also
provides end users with computation services and
database access. Also called host.
command line interface (CLI) The CSE port
on the LLC card.
Glossary-2
config See configuration.
configuration (config) The physical description
of a library listing the panel types, cartridge
capacity, type of host connection, and number of
drives.
configuration error An error that results from
incorrect configuration values.
controlling (host) software The logical interface
between the host operating system and the library
components.
CRU See customer replaceable unit.
CSE port A slot that enables a remote or laptop
computer user to run diagnostic tests, examine the
fault symptom code (FSC) log, download
firmware, or connect the library to a remote
modem.
customer replaceable unit (CRU) (1) An
assembly that a customer is allowed to replaced in
its entirety when it fails.
Customer Resource Center (CRC)
StorageTek's Web-based service that provides
technical information to customers with
StorageTek maintenance contracts. A log-in and
password are required.
D
daisy chain (1) A method of device
interconnection for determining interrupt priority
by connecting the interrupt sources serially. (2) A
device interconnection cable.
diagnostic cartridge A data cartridge with a
"DG" label, which is used for diagnostic routines.
diagnostic tests Automated offline tests that a
service representative uses to evaluate and
troubleshoot equipment.
DC Direct current.
differential (diff) A SCSI bus alternative that
provides better signal quality with less crosstalk
and noise but requires more power to drive the
signal. The maximum cable length is 25 m (82 ft.).
Seventh Edition
MT9104
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