Bull NovaScale 5xx5, Installation Manual, Page: 123 / 140

Glossary
G-3
DRAM:
Dynamic Random Access Memory is the
most common type of random access memory
(RAM).
E
ECC: E
rror
C
orrecting
C
ode.
EEPROM: E lectrically E rasable P rogrammable
R ead- O nly M emory. A type of memory device that
stores password and configuration data. See also
EPROM.
EFI: E xtensible F irmware I nterface.
EFIMTA: EFI M odular T est A rchitecture.
EFI Shell:
The EFI (Extensible Firmware Interface)
Shell is a simple, interactive user interface that
allows EFI device drivers to be loaded, EFI
applications to be launched, and operating systems
to be booted. In addition, the EFI Shell provides a
set of basic commands used to manage files and
the system environment variables. See Shell.
EMI: E lectro- M agnetic I nterference.
EPROM: E rasable P rogrammable R ead- O nly
M
emory. A type of memory device that is used to
store the system BIOS code. This code is not lost
when the computer is powered off.
ERC: E rror and R eset C ontroller. This controller
allows PAM software to control error detection and
reset propagation within each pre-defined CSS
partition. The ERC is initialized by PAM software to
ensure a partition-contained distribution of the reset,
error, interrupt and event signals; and to contribute
to error signaling and localization at platform level.
ERP: E
rror
R
ecovery
P
rocedure.
ESD: E lectro S tatic D ischarge. An undesirable
discharge of static electricity that can damage
equipment and degrade electrical circuitry.
Event: The generation of a message (event
message) by a software component and that is
directed to the Event Manager.
Event address: Defines the destination for a
message sent over a specified event channel. An
address is one of: the name of a history file (for the
HISTORY channel), an e-mail address (for the
EMAIL channel), the name of a user group (for the
WEB channel), the SNMP Manager IP address (for
the SNMP channel).
Event channel:
Defines how the Event Manager
sends an event message. An event channel is one
of: HISTORY (the message is logged in a history
file), EMAIL (the message is sent to an e-mail
address), WEB (the message is stored for analysis
from the PAM web user interface), SNMP (the
message is sent as an SNMP trap to the selected
SNMP application).
Event filter: A list of selected messages among all
possible event messages. If an event message is not
included in the filter, the Event Manager discards
the message.
Event Manager: A PAM feature used to forward
event messages over a configured event channel.
See Event.
Event message: A message sent by a software
component to the Event Manager for routing to a
destination that is configured by an administrator.
Event subscription:
An object that defines the event
channel, address, and filter for sending an event
message. If no such object is defined, the event
message is discarded.
Exclusion:
Logical removal of a redundant faulty
hardware element until it has been repaired or
replaced. The hardware element remains physically
present in the configuration, but is no longer
detected by PAM software and can no longer be
used by a domain.
External Disk Subsystem: Disk subsystem housed
inside the NovaScale cabinet.
F
Fail-over: Failover is a backup operational mode in
which the functions of a system component (such as
a processor, server, network, or database, for
example) are assumed by secondary system
components when the primary component becomes
unavailable through either failure or scheduled
down time.
FAME: F
lexible
A
rchitecture for
M
ultiple
E nvironments.
FAST WIDE: A standard 16-bit SCSI interface
providing synchronous data transfers of up to 10
MHz, with a transfer speed of 20M bytes per
second.
FC: F ibre C hannel.