I think I did a good job of confusing Brian and it's my bad. I assumed that since portal has a cache definition, it would use it for all clustering configuration. So if I am not mistaken now, tree cache configuration change that I would do in jboss-web-cluster.sar would affect portal and portlet session replication. Changes that I have been doing in jboss-portal-ha.sar would only affect clustering related to hibernate. correct? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4168795#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...