If all I want is Session replication, I need the tc5-cluster.sar application. The guide you pointed to is an all-or-nothing removal of clustering. It is my understanding that underneath the hood, the tc5 clustering uses JBoss Cache. I'm not sure how everything's plumbed together, so I'm just going to delete cluster-service.xml and hope for the best... Alternately, could I get http session replication by starting with the default config and copying tc5-cluster.sar in from the all directory? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4008579#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...