HP XC System Software 3.2.1 manual Glossary, Network Availability set

Glossary

A
administration	The half (branch) of the administration network that contains all of the general-purpose
branch	administration ports to the nodes of the HP XC system.
administration	The private network within the HP XC system that is used for administrative operations.
network
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	See CMDB.
management
database
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	See DHCP.
Control Protocol
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

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