Glossary
Scalar i500 User’s Guide
383
C
CAN (Controller Area Network)
A serial bus network of microcontrollers
that connects devices, sensors and actuators in a system or sub-
system for real-time control applications. There is no addressing
scheme used in controller area networks, as in the sense of
conventional addressing in networks (such as Ethernet). Rather,
messages are broadcast to all the nodes in the network using an
identifier unique to the network.
Cartridge
A container that is a protective housing for storage media,
such as cartridges for tapes or optical disks.
Channel zoning
A method of subdividing a storage area network into
disjoint zones on a per-channel basis in order to enhance security
and qualify access.
Cleaning tape / cleaning cartridge
A tape used to clean recording heads
and reading heads on a tape drive.
Cleaning slot
The physical home where a cleaning tape or cartridge
resides.
CLI (Command Line Interface)
A method of interfacing with a file system
in which the user types commands, using a specific command
syntax, from a command line.
COD (Capacity on Demand)
A library feature that allows users to have a
large physical library, but only be licensed to use a subset of its
total capacity. Users pay only for what they are currently using.
License upgrades enable more capacity without causing a system
interruption.
Compact flash
A card on the LCB that stores information about a
library’s contents and configuration.
Connectivity
The method by which hardware devices or software
communicate with other hardware or software.
Control module
The first module of the library. It consists of an operator
panel touch screen, library control blade (LCB), storage, tape
drives, power supplies, I/E station.
Control path
The connection between a partition and host application.
The control path connection is made through a designated tape
drive. Only one tape drive can be selected as the control path per
partition.
Controller
The PCB or system that translates computer data and
commands into a form suitable for use by the storage disks.
