Users Guide

120 Glossary
ERA/MC
Abbreviation for embedded remote access modular computer. See modular system.
ERA/O
Abbreviation for embedded remote access option.
ESM
Abbreviation for embedded systems management.
Fibre Channel
A data transfer interface technology that allows for high-speed I/O and networking
functionality in a single connectivity technology. The Fibre Channel Standard
supports several topologies, including Fibre Channel Point-to-Point, Fibre
Channel Fabric (generic switching topology), and Fibre Channel Arbitrated
Loop (FC_AL).
firmware
Software (programs or data) that has been written onto read-only memory (ROM).
Firmware can boot and operate a device. Each controller contains firmware which
helps provide the controller's functionality.
flash bios
A BIOS that is stored in flash memory rather than in ROM. A flash BIOS chip
can be updated in place, whereas a ROM BIOS must be replaced with a
newer chip.
flash memory
A type of EEPROM chip that can be reprogrammed from a utility on diskette
while still installed in a system; most EEPROM chips can only be rewritten with
special programming equipment.
FRU
Abbreviation for field replaceable unit.
heat sink
A metal plate with metal pegs or ribs that help dissipate heat. Most
microprocessors include a heat sink.
hot plug
The ability to remove and replace a redundant part while the system is still
running. Also called a "hot spare."
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