NonStop S-Series Planning and Configuration Guide (G06.26+)

Glossary
HP NonStop S-Series Planning and Configuration Guide—523303-017
Glossary-36
fault tolerance
fault tolerance. The ability of a computer system to continue processing despite the failure
of any single software or hardware component within the system.
FCSA. See Fibre Channel ServerNet adapter (FCSA).
FC switch. See Fibre Channel switch (FC switch).
FDC. See flexible disk configuration (FDC).
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 the adapter 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).
fiber-optic ServerNet cable. A ServerNet cable that uses fiber optics to transmit data. HP
NonStop™ servers support two types of fiber-optic ServerNet cables: multimode
fiber-optic (MMF) ServerNet cable and single-mode fiber-optic (SMF) ServerNet cable.
Fibre Channel ServerNet adapter (FCSA). A ServerNet adapter that transmits data
between an HP NonStop™ server and Fibre Channel storage devices. This ServerNet
adapter is installed in an IOAM enclosure.