HP XC System 3.x Software - Manual (Page 135)

Glossary
A
administration
branch The half (branch) of the administration network that contains all of the general-purpose
administration ports to the nodes of the HP XC system.
administration
network The private network within the HP XC system that is used for administrative operations.
availability set An association of two individual nodes so that one node acts as the first server and the other
node acts as the second server of a service.
See also improved availability, availability tool.
availability tool A software product that enables system services to continue running if a hardware or software
failure occurs by failing over the service to the other node in an availability set.
See also improved availability, availability set.
B
base image The collection of files and directories that represents the common files and configuration data
that are applied to all nodes in an HP XC system.
branch switch A component of the Administration Network. A switch that is uplinked to the root switch and
receives physical connections from multiple nodes.
C
cluster A set of independent computers combined into a unified system through system software and
networking technologies.
cluster alias The external cluster host name supported by LVS, which enables inbound connections without
having to know individual nodes names to connect and log in to the HP XC system.
CMDB Configuration and management database. Constructed during HP XC system installation, the
CMDB is a MySQL database that stores information about the nodes, hardware, and software
configuration, and network connectivity. This database runs on the node with the node
management role.
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.
.
configuration and
management
database See CMDB.
console branch A component of the administration network. The half (branch) of the administration network
that contains all of the console ports of the nodes of the HP XC system. This branch is established
as a separate branch to enable some level of partitioning of the administration network to
support specific security needs.
D
DHCP Dynamic Host Control Protocol. A protocol that dynamically allocates IP addresses to computers
on a local area network.
Dynamic Host
Control Protocol See DHCP.
E
EFI Extensible Firmware Interface. Defines a model for the interface between operating systems
and Itanium-based platform firmware. The interface consists of data tables that contain
platform-related information, plus boot and run-time service calls that are available to the
135