We now have two options for "deployment/mode". They are,
standalone - This is the simplest mode a broker can be started. The node will assume that message store is not shared with another node. Therefore it will not try to coordinate with other nodes (possibly non-existent) to provide HA. This is the default configuration used.
clustered - Broker node will run in HA mode (active/passive).
We now have two options for "deployment/mode". They are,