McDATA 316095-B21 - StorageWorks Edge Switch 2/24 User Manual page 264

Glossary
frames a port can transmit without receiving a receive ready signal
from the receiving device. BB_Credit can be adjustable to provide
different levels of compensation.
The path that carries data between the computer (microprocessor)
bus
and peripheral devices. An IDE interface cable and a small computer
system interface (SCSI) cable are both examples.
If a port is bypassed, all serial channel signals route past the port. A
bypassed port
device attached to the port cannot communicate with other devices in
the loop.
Abbreviated as B. A byte generally equals eight bits, although a byte
byte
can equal from four to ten bits. A byte can also be called an octet.
C
Linking two or more Fibre Channel switches to form a larger switch
cascade
or fabric. The switched link through fiber cables attached between
one or more expansion ports (E_Ports). See also expansion port.
CPU. The heart of the computer, this is the component that actually
central processing
executes instructions.
unit
CPC. A physical grouping of hardware that includes a main storage
central processor
device, one or more central processors, timers, and channels.
complex
(1) A system element that controls one channel path, and whose
channel
mode of operation depends on the type of hardware attached. Each
channel controls an I/O interface between the channel control
element and the attached control units (D). (2) Point-to-point link that
transports data from one point to the other. (3) A connection or socket
on the motherboard to controller card. A motherboard may have only
one or two channels (primary and secondary). If a motherboard has
only one channel, it may be necessary to add a controller card to
create a secondary channel.
(1) Pertaining to direct attachment of devices by data I/O channels to
channel-attached
a computer. (2) Pertaining to devices attached to a control unit by
cables, not telecommunication lines (D). Synonymous with local.
g-6 EFCM Basic User Manual