Not sure if this is an MQ or clustering question, but somewhere in the documentation it stated that the all option when installing jboss would setup MQ to be a HA singleton. Unfortunately my deploy-hasingleton is completely empty. Is it enough to move the deploy/jms directory to the deploy-hasingleton, or is there some documentation on the steps one should take to make this a singleton? Another somewhat related question is on how to setup MDB's or services that are dependent on queues and topics. My current thinking is that I have one service which really only contains my queue and topic dependencies that get deployed in the hasingleton directory. Then I have another service that depends on the barrier and that gets deployed on all nodes in a cluster. Other services can then depend on this service and be guaranteed that the queues and topics are up and running. Now I am a complete n00wbie with this environment and open for suggestions on the best way to set this up. Thanks in advance for pointers. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3999654#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...