Bull Escala EPC400, Setting Up The System

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G-1
Glossary
Glossary
A
A: Ampere.
AC: Alternating Current.
AIX: IBM’s implementation of UNIX operating
system.
ANSI: American National Standards Institute.
Appliance Coupler: A standard IEC 320 male plug
placed on the drawer rear side.
ASCII: American Standard Code for Information
Interchange.
AUI: Attachment Unit Interface.
B
bank: See memory bank.
BUMP: Bring-Up Microprocessor. A low power
microprocessor which monitors the system,
especially during the various boot phases before
the Operating System is loaded.
C
CD-ROM:
Compact Disc Read-Only Memory.
High-capacity read-only memory in the form of an
optically readable compact disc.
chip: Synonym for integrated circuit (IC).
CPU: Central Processing Unit.
D
DAS: Disk Array Subsystem. A RAID disk drawer,
available in different models.
DC:
Direct Current generated by the power supply.
DDS:
Digital Data Storage.
device areas:
See media and disk device areas.
DIMM:
Dual In-line Memory Module. It is the
smallest component of the system memory.
disk cage:
A metallic box which can host two or
three disk carriers.
disk carrier: A sled used to install hard disk drives
into the system.
DPCI:
Dual Port PCI host bridge.
DRAM: Dynamic Random Access Memory.
drawer: Each system or subsystem installed in a
rack is a drawer. There are several types of
drawers, such as CPU drawers, expansion
drawers, DAS drawers.
E
ECMA:
European Computer Manufacturers
Association.
EEPROM:
Electrically Erasable Programmable
Read-Only Memory. An EPROM that can be
reprogrammed while it is in the system.
EIA: Electronic Industries Association.
EMI: Electromagnetic Interference.
EPROM: Erasable Programmable Read-Only
Memory.
ESD: Electrostatic Discharge. An undesirable
discharge of static electricity that can damage
equipment and degrade electrical circuitry.
F
FAST-10 WIDE-16:
A standard SCSI interface, 16
bits, providing synchronous transfer rate of up to
10 MHz, with a data transfer speed of 20M bytes
per second.
FAST-20 WIDE-16: An enhanced standard SCSI
interface, 16 bits, providing synchronous transfer
rate of up to 20 MHz, with a data transfer speed of
up to 40M bytes per second. It is also called
ULTRA WIDE.
FEPROM: Flash Erasable Programmable
Read-Only Memory. An EPROM containing the
system firmware.
firmware: The microcode in read-only memory
(ROM). It consists of an ordered set of instructions
and data stored in a way that is functionally
independent of main storage.
Forth: The Open Firmware based language
interpreter.
FW: Firmware. See firmware.