User`s guide

G-2
User’s Guide
Clipping: A PAM Event filter criterion. Clipping is
defined on a Count / Time basis aimed at routing a
pre–defined number of messages only. Identical
messages are counted and when the number of
messages indicated in the Count field is reached
within the period of time indicated in the Time field,
no other messages will be selected for routing.
CMC: Corrected Memory Check.
CMOS: Complementary Metal Oxide
Semiconductor. A type of low–power integrated
circuits. System startup parameters are stored in
CMOS memory. They can be changed via the
system setup utility.
COM: Component Object Model. Microsoft
technology for component based application
development under Windows.
COM +: Component Object Model +. Microsoft
technology for component based application
development under Windows. The external part of
the PAM software package is a COM+ application.
COM1 or COM2: The name assigned to a serial
port to set or change its address. See Serial Port.
Command: An instruction that directs the
computer to perform a specific operation.
Configuration: The way in which a computer is set
up to operate. Configurable options include CPU
speed, serial port designation, memory allocation,
...
Configuration Tasks: A PAM feature used to
configure and customize the server.
Control Pane: One of the three areas of the PAM
web page. When an item is selected in the PAM
Tree pane, details and related commands are
displayed in the Control pane. See also PAM Tree
pane and Status pane.
COS: Cluster Operating System.
CPE: Corrected PCI Error.
CPU: Central Processing Unit. See
Microprocessor.
CSE: Customer Service Engineer.
CSS: Central Sub–System. See CellBlock.
CSS Module: A MidPlane with all its connected
components (QBBs, IOBs, PMB) and utility
devices. See Module.
D
D2D: DC to DC converter.
DC: Direct Current generated by the power supply.
See AC.
Default Setting: The factory setting your server
uses unless instructed otherwise.
Density: The capacity of information (bytes) that
can be packed into a storage device.
Device Driver: A software program used by a
computer to recognize and operate hardware.
DIG64: Developer Interface Guide for IA64.
DIM Code: Device Initialization Manager. Initializes
different BUSes during the BIOS POST.
DIMM: Dual In-line Memory Module – the smallest
system memory component.
Disk Drive: A device that stores data on a hard or
floppy disk. A floppy disk drive requires a floppy
disk to be inserted. A hard disk drive has a
permanently encased hard disk.
DMA: Direct Memory Access. Allows data to be
sent directly from a component (e.g. disk drive) to
the memory on the motherboard). The
microprocessor does not take part in data transfer
enhanced system performance.
DMI: Desktop Management Interface. An industry
framework for managing and keeping track of
hardware and software components in a system of
personal computers from a central location.
DNS: Domain Name Server. A server that retains
the addresses and routing information for TCP/IP
LAN users.
Domain: is the coherent set of resources allocated
to run a customer activity, i.e. the association –at
boot time– of a Partition, an OS instance (including
applications) and associated LUNs and an
execution context including execution modes and
persistent information (e.g. time, date of the OS
instance). Domain definitions and initializations are
performed via PAM. A Domain can be modified to
run the same OS instance on a different Partition.
When a Domain is running, its resources are
neither visible nor accessible to other running
Domains.
Domain Identity: See Indentity.
Domain Manager: A PAM feature used to power
on / off and manage server domains. See Domain.
DPS: Distributed Power Supply.
DRAM: Dynamic Random Access Memory is the
most common type of random access memory
(RAM).