I would like to use this thread for discussing the implementation of server side failover and HA. (As opposed to the other thread which concentrates more on the client side). I am particularly interested in the following questions: 1) How much of AS server side failover code we can re-use. (Brian?) 2) How this is going to work in detail. How can we maintain a consistent mapping between nodes and their failover nodes. Is this maintained in the JGroups group state, or can we just use the JGroups view? 3) How we can ensure that the client fails over to the same server as the server fails over onto. 4) How we ensure that the client doesn't start sending requests to it's failover server after it has failed over, before the server has failed over. 5) We need to make sure we tackle any other race conditions and edge cases. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3976612#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...