These tunable parameters not only provide control of the configurations like maximum possible number of nodes in the cluster, but also provide control on how GAB behaves when it encounters a fault or a failure condition. Some of these tunable parameters are needed when the GAB module is loaded into the system. Any changes to these load-time tunable parameters require either unload followed by reload of GAB module or system reboot. Other tunable parameters (run-time) can be changed while GAB module is loaded, configured, and cluster is running. Any changes to such a tunable parameter will have immediate effect on the tunable parameter values and GAB behavior.