Resolution:
In the fault-tolerant configuration, some Brokers can be set up as Failover Brokers. When a Broker is designated a Failover Broker, no Director will route Engines to that Broker unless there are no other active Brokers. When there are no Jobs waiting for Service on a Failover Broker and other Brokers in the grid are available, the Failover Broker will "kick off" idle Engines causing the Engines to login to their Primary Director and get reassigned to a non-Failover Broker in the grid. By default, all Brokers are non-Failover Brokers (they load-balance work). Designate one or more Brokers within the grid as Failover Brokers when you want those Brokers to remain idle during normal (non-failure) operation.

To set up a Failover Broker:

   1. Log in to the GridServer Administration Tool.
   2. Select the Admin Tab, then select Manager Reconfigure page.
   3. Go through each configuration step. In the third step, set Broker to Failover.
   4. After completing the eight steps of the Manager Reconfigure, click Start Installation. This will reinstall GridServer and restart the Broker as a Failover Broker.

Setting Up a Failover Broker (GridServer 4.0)