HP 3PAR Cluster Extension Software Installation Guide for Windows (5697-1822, March 2012)

Glossary

CLI Command-line interface. An interface comprised of various commands which are used to control

operating system responses.

DLL Dynamic-link library.

failover A role-reversal process where the backup Remote Copy volume group is converted to the primary

Remote Copy volume group.

FC Fibre Channel. A network technology primarily used for storage networks.

GUI Graphical User Interface.

heartbeat A periodic synchronization signal issued by cluster software or hardware to indicate that a node

is an active member of the cluster.

host A computer that runs user applications and uses (or potentially uses) one or more virtual disks

that are created and presented by the array controller.

JRE Java Runtime Environment.

LUN Logical unit number.

MSCS Microsoft Cluster Service.

quorum In Windows clustering: A cluster resource that has been configured to control the cluster,

maintaining essential cluster data and recovery information. In the event of a node failure, the

quorum acts as a tiebreaker and is transferred to a surviving node to ensure that data remains

consistent within the cluster.

SAN Storage area network. A network of storage devices available to one or more servers.

split-brain

syndrome

A state of data corruption that can occur if a cluster is re-formed as subclusters of nodes at each

site, and each subcluster assumes authority, starting the same set of applications and modifying

the same data.

SPOCK Single Point of Connectivity Knowledge website. SPOCK is the primary portal used to obtain

detailed information about supported HP StorageWorks product configurations.

storage system A synonym of storage array and virtual array. A group of disks in one or more disk enclosures

combined with controller software that presents disk storage capacity as one or more virtual disks.

virtual volume A virtual storage unit created by mapping data from one or more logical disks.

volume group A group of virtual volumes that are logically related and for which there is a cross-volume ordering

of writes.

WWN A 64- or 128-bit identifier that uniquely identifies the address of a component on the fabric.