McDATA Eclipse 2640 SAN, Administration And Configuration Manual

Page: 220 / 276

g-10 Eclipse™ 2640 SAN Router Administration and Configuration Manual
Glossary
component
(1) Hardware or software that is part of a functional unit
(D)
. (2) A
functional part of an operating system; for example, the scheduler or
supervisor
(D)
.
computer
A programmable machine that responds to a specific set of
instructions in a well-defined manner and executes a prerecorded list
of instructions (a program). Computers are both electronic and digital
and are made up of both hardware (the actual machine-wires,
transistors, and circuits) and software (instructions and data).
concurrent firmware
upgrade
Firmware is upgraded without disrupting switch operation.
concurrent
maintenance
Ability to perform maintenance tasks, such as removal or
replacement of field-replaceable units (FRUs), while a hardware
product is operating.
connectionless
Non-dedicated link. Typically used to describe a link between nodes
which allows the switch to forward Class 2 or Class 3 frames as
resources (ports) allow. Contrast this with the dedicated bandwidth
that is required in a Class 1 Fibre Channel Service (FC-1)
point-to-point link.
connectivity
The ability of devices to link together.
connector Synonym for
optical fiber connector .
console See
personal computer ; server .
controller
A computer module that interprets signals between a host and a
peripheral device. The controller often is part of the peripheral
device.
See
disk controller ; disk drive controller ; interface controller .
control program
A computer program that schedules and supervises execution of
programs in a computer system
(I)
.
control unit port
CUP. An internal director or switch port on the control processor
(CTP) card (labelled FE) that communicates with channels to report
error conditions and link initialization
(D)
.
CPU See
central processing unit .
CRC See
cyclic redundancy check .