IBM TS2900 Manual page 120

B
backup
To make extra copies of documents or software for safekeeping.
bar code
A code that represents characters by sets of parallel bars of varying thickness and separation, which are read optically by transverse scanning.
bar code label
Paper bearing a bar code and having an adhesive backing. The bar code label must be affixed to a tape cartridge to enable the library to identify the cartridge and its
volume serial number.
bar code reader
A laser device that is specialized for scanning and reading bar codes and converting them into either the ASCII or EBCDIC digital character code.
bezel
Decorative and safety cover.
bicolored
Having two colors.
bit
Either of the digits 0 or 1 when used in the binary numbering system.
BOM or bill of materials
A list of specific types and amounts of direct materials that are expected to be used to produce a specific job or quantity of output.
Border Gateway Protocol (BGP)
BGP is the core routing protocol of the Internet. It works by maintaining a table of IP networks or 'prefixes' that designate network reachability among autonomous
systems (AS).
BRMS
Backup Recovery and Media Services.
browser
A client program that initiates requests to a web server and displays the information that the server returns.
buffer
A routine or storage that is used to compensate for a difference in rate of flow of data or time of occurrence of events, when data is transferred from one device to
another.
bus
A facility for transferring data between several devices that are located between two end points, only one device able to transmit at a specified moment.
byte
A string that consists of some bits (usually 8) that are treated as a unit and represent a character. A fundamental data unit.
C
CA certification
In cryptography, a certificate from a certificate authority (CA).
capacity
The amount of data that can be contained on storage media and expressed in bytes of data.
cartridge manual rewind tool
A device that can be fitted into the reel of a cartridge and used to rewind tape into or out of the cartridge.
cartridge memory (CM)
Within each data cartridge, an embedded electronics and interface module that can store and retrieve a cartridge's historical usage and other information.
cartridge storage slot
Individual slot that is located within a magazine that is used to house tape cartridges.
caution (notice)
A word to call attention to possible personal harm to people. Contrast with attention and danger.
CE
Customer engineer; field engineer; service representative.
centimeter (cm)
One one-hundredth of a meter (0.01 m). Approximately 0.39 inch.
channel command
An instruction that directs a data channel, control unit, or device to perform an operation or set of operations.
char
Character.
CHK
Check.
cleaning cartridge
A tape cartridge that is used to clean the heads of a tape drive. Contrast with data cartridge.
COD
Capacity On Demand.
command
A control signal that initiates an action or the start of a sequence of actions.
compact disc (CD)
A disc, usually 4.75 inches in diameter, from which data is read optically by using a laser.
compression
The process of eliminating gaps, empty fields, redundancies, and unnecessary data to shorten the length of records or blocks.
concurrent
Refers to diagnostic procedures that can be run on one control unit while the rest of the subsystem remains available for customer applications.
contingent connection
A connection between a channel path and a drive that is caused when a unit check occurs during an I/O operation.
controller
A device that provides the interface between a system and one or more tape drives.
control path drive
A drive that communicates messages from the host computer to the library in which the drive is installed.
cookie
A packet of data that is exchanged between the library and a web browser to track configuration.
TS2900 Tape Autoloader 115