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TIBCO GridServer® 7.1.0

# Redundancy

If you have a minimal configuration including a single Director and single Broker, Engines and Drivers log in to the Director. In this configuration, if the Director fails (as in the case of hardware or network failure), Drivers or Engines cannot establish new connections.

To prevent this problem, run a second Manager with a Secondary Director, and configure Engines and Drivers with the address of both Directors. If the Primary Director fails, Engines and Drivers contact the Secondary Director, which routes Engines and Drivers to Brokers in the same manner as the Primary Director. The following figure shows an implementation with two Managers.

In this typical GridServer installation, there is a Primary Director and a Secondary Director installed on two separate systems. On the same system as the Primary Director, there is a Live Broker. A Failover Broker is installed on the same system as the Secondary Director. Add Engines and Drivers to the cluster as desired. This configuration is fully redundant but does not do any load sharing.

In addition to redundant Directors, a Broker can have a backup on another Manager. You can designate a Broker to be a Failover Broker on a Manager during installation or reinstallation. If no other regular Brokers are available (because of a failure), Directors temporarily route Drivers and Engines to Failover Brokers. The figure to the left shows a Failover Broker on the second Manager.

For more information about redundancy, see the TIBCO GridServer® Administration.

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