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bar code
A code that represents characters by sets
of parallel bars of varying thickness and
separation. The bars are read optically by
transverse scanning.
bar code label
A slip of 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
Located on the dual-gripper transport
mechanism of the TS3500 Tape Library, a
laser device specialized for scanning and
reading bar codes and converting them
into either the ASCII or EBCDIC digital
character code. The bar code reader reads
the bar code on the labels of cartridges or
at the rear of empty storage slots.
base frame
The primary unit of the TS3500 Tape
Library (also known as Models L22, L23,
L32, L52, or L53). The base frame is
distinguished from an expansion frame by
its I/O stations and operator panel. The
base frame includes a rail assembly for
the cartridge accessor and up to 12 tape
drives.
bel
Ten decibels.
bit
Either of the digits 0 or 1 when used in
the binary numbering system.
bpi
Bits per inch.
bridge
A storage controller that forms a bridge
between two external I/O buses.
British thermal unit (Btu)
The quantity of heat required to raise the
temperature of one pound of water one
degree Fahrenheit at a specified
temperature.
browser
A client program that initiates requests to
a web server and displays the information
that the server returns.
BRSM
See
Backup recovery and media services
.
Btu
See
British thermal unit
.
bulk load
To manually insert large quantities of tape
cartridges into a tape library's empty
storage slots.
bus
See
SCSI bus
.
byte
A string consisting of a certain number of
bits (usually 8) that are treated as a unit
and represent a character. A byte is a
fundamental data unit.
C
calibration
Adjustment, tuning.
calibration sensor
Located on the cartridge accessor of the
TS3500 Tape Library, the component that
provides the means to find certain
positions within the library very precisely
during the calibration operation.
Call Home
A feature that allows the TS3500 Tape
Library to report failures to a support
center by using a modem.
CAN
See
Controller Area Network
.
CAP
See
cartridge assignment policy
.
capacity
See
media capacity
.
Capacity expansion feature
Applicable only to the base frame
(Models L22, L23, L32, L52, or L53) of the
TS3500 Tape Library, the cartridge storage
slots that are located on the interior of the
front door and enabled for additional
storage. The Capacity Expansion Feature
increases the maximum quantity of
storage slots in the base frame.
Capacity on Demand
Applicable only to base frame Models
L22, L23, L52, and L53, a feature that
adds capacity to the library and that is
only available through the field. See also
High Density Capacity on Demand
.
cartridge
See
tape cartridge
.
cartridge accessor
The mechanism in the TS3500 Tape
Library that moves cartridges between the
storage slots, tape drives, and the I/O
stations. The accessor includes the X-axis
motion assembly, Y-axis motion assembly,
pivot assembly, cartridge gripper, bar
code reader, and calibration sensor.
cartridge assignment policy (CAP)
A method to automatically assign
Glossary
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