
Pilot Ultra XX189-00-XX
Introduction
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7
Hot Standby Overview
“Standby” capability in a system refers to spare equipment that is placed in operation only when other, in-use
equipment becomes inoperative. If the spare equipment is powered, ready for use, and can be switched into
service automatically upon detection of a failure in the primary equipment, then it is referred to as “hot”
standby. Hot standby capability can be implemented for any or all of the modules in the V1599 card cage. Hot
standby cards are easily added to a system, and no external cabling is required between primary and hot
standby modules. Illumination of the LEDs on the front panel of the card cage gives a visual indication of
which module is in control (primary or hot standby), as discussed in V1599CDU Front Panel LEDs.
Vicon offers five pre-configured hot standby configurations (V1599CDU-H-1, V1599CDU-H-2, V1599CDU-H-
3, V1599CDU-H-4, V1599CDU-H-5). The hot standby card cage contains a backup, or hot standby, card for
each network, parallel and serial card in the card cage. This configuration is discussed in depth in the Hot
Standby Configuration section of this manual.
If the number and type (primary or hot standby) of serial and parallel cards in the hot standby configuration
does not suit your needs, you may design your own system with customized backup protection. For example,
you might require a card cage fully populated with parallel cards or serial cards or you might want to forego
hot standby protection on some of your cards (the
pre-configured hot standby cages
provide hot standby of all
cards). You can provide hot standby protection on any or all of the cards in a customized configuration
including network and power modules. Should one of the power modules fail, the other module will continue
to provide power to the rest of the card cage. The failed power module may be replaced without cutting power
to the unit, as discussed in the Power Module section of this manual. Hot standby protection of the network
connection is provided by a second network module in each card cage.
Note: All hot standby cards may be replaced without powering down the card cage.
Содержание V1599
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