Director Failure

If the Primary Director fails, the Secondary Director takes over balancing and routing Drivers and Engines to Brokers. The Directors do not maintain any state, so no work is lost if a Director fails and is restarted. Also, both Directors follow the same rules for routing to Brokers, so it makes no difference which Director is used for login.

The Primary Director is also responsible for an internal database, which contains data needed by the Manager for operation, such as the User list, routing properties, and so on. You can modify these values only on the Primary Director. This database synchronizes with the Secondary Director while both are running. The Secondary Director backs up this database on every database backup so that the grid can remain in operation when the Primary Director is down. Features that modify the internal database are not available from the Administration Tool when a Secondary Director is active.