Glossary
Scalar i500 User’s Guide 548
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.
CRU (Customer Replaceable Unit) The smallest hardware component
that can be replaced at a customer installation by a customer.
D
Default
A value or setting that is selected by the hardware or software
unless specified otherwise by the user.
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