Fast Ethernet Adapter Installation and Support Guide

Glossary
Fast Ethernet Adapter Installation and Support Guide—425685-003
Glossary-32
far jump
far jump. A sequence of RISC instructions that permits crossing the boundaries of the
256-megabyte direct jump areas in virtual memory. Such sequences are necessary, for
example, when calling into system code from user code, because the two are located
in different direct jump areas. The sequence ends with a JR (Jump via Register) RISC
instruction.
fastLoad. An optimization that allows the loader to avoid reading symbols and binding
symbolic references when loading a program or dynamic-link library in an environment
equivalent to that of a previous load. See also preset, cached bindings, and library
import characterization (LIC).
Fast Ethernet ServerNet adapter (FESA). A single-ported ServerNet adapter that supports
100-megabit/second (Mbps) or 10-Mbps Ethernet data transfer rates on an HP
NonStop™ S-series server. The 3863 FESA installs directly into an available I/O port.
fault tolerance. The ability of a computer system to continue processing despite the failure
of any single software or hardware component within the system.
feature-test macro. In C and C++ programs, a symbol that, if defined in a program’s source
code, includes specific other symbols from a header within that program’s source code
and makes those symbols visible.
feeder circuit. The circuit conductors installed between the facility’s main service entrance
and the power distribution panels (PDPs) that supply the branch circuits.
ferrule. A cylindrical end terminal sometimes used on resistors, cartridge fuses, and other
parts to permit quick insertion and removal from holders that have corresponding
spring contacts.
FESA. See Fast Ethernet ServerNet adapter (FESA).
Fiber Optic Extension (FOX). Refers to two products, FOX II and ServerNet/FX, which
allow you to create high-speed (up to 4 megabytes/second) networks of as many as 14
systems connected by dual fiber-optic cables.
fiber-optic plug-in card (F-PIC). A plug-in card (PIC) for the 6760 ServerNet device
adapter (ServerNet/DA) that uses a fiber-optic interface to connect an HP NonStop™
S-series system to external disk drives and to some tape drives that contain a
back-end board (BEB) that translates fiber-optic signals from the F-PIC into SCSI
commands and information for the tape drive. See also plug-in card (PIC) and SCSI
plug-in card (S-PIC).
fiber optics. A medium for data transmission that conveys light or images through very fine,
flexible, glass or plastic fibers. Fiber-optic cables (light guides) are a direct replacement
for conventional coaxial and wire pairs.
fiber-optic ServerNet addressable controller (F-SAC). A ServerNet addressable
controller (SAC) that is contained within a fiber-optic plug-in card (F-PIC).