HP SureStore E SAN Manager LUN Management Administrator's Guide

Glossary
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GLOSSARY
Administrative Cluster
A collection of resources that can be managed as a group from any host in the group. An
administrative cluster does not provide for distributed applications.
Availability
A measure of the amount of time during which a computer system is operational.
Cluster
A type of parallel or distributed system consisting of a collection of interconnected
whole computers. A cluster is used as a single, unified computing resource.
Device Groups
User-configurable storage device groups in SAN Manager LM that help manage the SAN.
A device group is a set of devices that are grouped into a logical set—for example, a
JBOD, a department, or a computer room.
Disk Mirroring
A technique in which the same data is written to multiple disks simultaneously. If a disk
fails, the system can continue to operate without data loss or network interruption.
Domain Administrator
The person in charge of setting up and managing domain controllers.
Fibre Channel
An ANSI standard serial I/O and networking protocol. Fibre Channel has very low
overhead, low latency with very high bandwidth and uses large block sizes to transfer
data from disk with delivery guarantee at the hardware level. Fibre Channel allows easy
connectivity between mass storage and “multiple initiators” — multiple hosts that
access the storage directly.