HP Surestore 64 Director Switch - Manual (Page 123)

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GLOSSARY
The following cross-references are used in this glossary:
Contrast with. This refers to a term that has an opposite or substantively different
meaning.
See. This refers the reader to another keyword or phrase for the same term.
See also. This refers the reader to definite additional information contained in another
entry.
A
active zone set
The single zone set that is active in a multiswitch fabric. It is created when you enable a
specified zone set. This zone set is compiled by checking for undefined zones or aliases.
B
backplane
The backplane provides 48 VDC power distribution and connections for all logic cards.
backup FRU
When an active FRU fails, an identical backup FRU takes over operation automatically
(failover) to maintain director and Fibre Channel link operation.
beaconing
The use of light-emitting diodes on ports, port cards, hardware components, and
directors to aid in the fault-isolation process; when enabled, active beaconing will cause
LEDs to flash for selected components.