Matrix PS System Installation and Commissioning Guide
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Dali Wireless Proprietary and Confidential | DW-MAN-036 Rev 06
12.7
Configuring Redundant System Controllers
For large Matrix systems requiring network redundancy, you can install Primary and
Secondary system controllers to provide uninterrupted monitoring, control, and visibility
of hosts and remote units.
A Primary controller can make configuration changes through the EMS, while a
Secondary, or backup controller provides a read-only view. If a Primary controller fails,
you can manually switch to the Secondary controller. The Secondary controller
becomes the Primary so that you can continue managing all host and remote units.
Redundant system controllers adhere to the following rules:
System controllers are unaware of each other and do not communicate directly
Failed system controllers that have been recovered will restart in the Primary or
Secondary role last used
Only one system controller appears in the EMS system tree at a time. For
example, log into the Primary controller to see it at the top of the tree. The
Secondary controller is not visible
If a system controller fails and you can't log into the EMS, RF
signals can still be transmitted and received on the uplink and
downlink path as long as there are no Critical alarms.
12.7.1
Installing Redundant Controllers
In general, there are several ways to deploy redundant system controllers. A specific
network design for your system is provided by your DAS integrator.
12.7.1.1
Without Ethe rne t S w itche s - U p to S ix Hosts
In this example, controller redundancy is achieved by connecting up to six host units
directly to the Primary and Secondary controllers. In this configuration, there’s no single
point of failure. All six LAN ports are used on each system controller, meaning that a
maximum of six host units can be connected.
