HSG80 ACS Solution Software V8.6 for IBM AIM Installation and Configuration Guide

Glossary–7
FMU Fault management utility.
forced errors A data bit indicating a corresponding logical data block contains
unrecoverable data.
frame An invisible unit used to transfer information in Fibre Channel.
FRU Field replaceable unit. A hardware component that can be replaced at the
customer location by Compaq service personnel or qualified customer service
personnel.
FRUTIL Field Replacement utility.
full duplex (n) A communications system in which there is a capability for 2-way
transmission and acceptance between two sites at the same time.
full duplex (adj) Pertaining to a communications method in which data can be transmitted and
received at the same time.
FWD SCSI A fast, wide, differential SCSI bus with a maximum 16-bit data transfer rate of
20 MB/s. See also SCSI and FD SCSI.
GBIC Gigabit Interface Converter. GBICs convert electrical signals to optical signals
(and vice-versa.) They are inserted into the ports of the Fibre Channel switch
and hold the Fibre Channel cables.
GLM Gigabit link module
giga
A prefix indicating a billion (10
9
) units, as in gigabaud or gigabyte.
gigabaud
An encoded bit transmission rate of one billion (10
9
) bits per second.
gigabyte A value normally associated with a disk drives storage capacity, meaning a
billion (10
9
) bytes. The decimal value 1024 is usually used for one thousand.
half-duplex (adj) Pertaining to a communications system in which data can be either transmitted
or received but only in one direction at one time.
hard address The AL_PA which an NL_Port attempts to acquire during loop initialization.
heterogeneous
host support
Also called noncooperating host support.
HIPPI–FC Fibre Channel over HIPPI
host The primary or controlling computer to which a storage subsystem is attached.