Administrator's Guide

Glossary
administration disk The disk located on the image server on which HP Insight CMU is installed. A dedicated space
can be allocated to the cloned images.
administration
network
The private network within the system that is used for administrative operations.
clone image The compressed image of the installation from the master disk. One clone image is needed for
each logical group.
cluster A set of independent computers combined into a unified system through system software and
networking technologies.
CMU HP Insight Cluster Management Utility
compute node A node that is assigned only with the compute role and no other. Jobs are distributed to and run
on nodes with the compute role. No other services run on a compute node.
control node Another word for the head node.
head node The node on which HP Cluster Test is installed on and run. Typically, the head node is also the
image server. More than one head node can exist in a cluster.
iLO Integrated Lights Out. A self-contained hardware technology that enables remote management
of any node within a system.
iLO 2 The next generation of iLO that provides full remote graphics console access and remote virtual
media.
image server A node specifically designated to hold images that will be distributed to the nodes dedicated as
secondary servers in each network entity. In a standard HP Insight CMU installation, the head
node acts as the image server.
logical group A group of similar machines running the same image. A node can belong to several logical
groups.
management card A hardware device on a server that enhances remote manageability. The management cards
supported by HP Insight CMU are iLO, iLO 2, and LO 100i.
management
network
Typically, a private, Ethernet-based LAN that connects all the nodes in a cluster. HP Insight CMU
communicates with the compute nodes and terminal servers over the management network.
management node Another term for head node.
master disk A reference disk where the operating system and layered products are manually installed. Its
contents are duplicated on the other nodes of a group.
network entity A group of machines that are connected with an Ethernet switch. In each network entity, one of
the nodes is temporarily dedicated as the secondary server, which means that it has the same
role as the image server. Each node belongs to a unique network entity.
OA Onboard Administrator. The enclosure management hardware, software, and firmware that is
used to support all managed devices contained within the enclosure.
PXE Preboot Execution Environment. A standard client/server interface that enables uninstalled network
computers with an operating system to be configured and booted remotely. PXE booting is
configured at the BIOS level.
RPM Red Hat Package Manager.
1. A utility that is used for software package management on Linux operating systems, most
notably to install and remove software packages.
2. A software package that is capable of being installed or removed with the RPM software
package management.
secondary server A dedicated node in a network entity where the cloned image is temporarily stored. The cloned
image is propagated only to the other nodes that are defined inside the entity.
target disk The hard drive on a target node where the cloned image is installed.
target node A compute node that will receive the cloned image from a secondary server.
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