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Using the Security System
5.1.10. High Availability
The main cause of system failure is hardware failure, such as a failure
of the network card, hard disk, or processor. The High Availability
(HA) option allows you to use two systems with identical hardware in
parallel. The first system runs normally (master mode), while the
second runs in standby (slave) mode, monitoring the active system
over the data transfer link using the link beat. The standby system
also receives periodic updates over this link so that, in the case of
system
failure
on
the
primary,
it
can
take
over
operations
immediately.
Hardware and Software Requirements
•
The High Availability (HA) License
•
2 security systems with identical hardware
•
2 additional Ethernet interfaces (if you wish to use heartbeat
monitoring, both of these must support link-beat)
•
One Ethernet crossover cable
•
One serial interface cable (optional)
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