Deploying a cluster filesystem is not a "drop in" replacement for a single node deployment. We recommend that you allow a period of around 8-12 weeks of testing on new installations in order to test the system and ensure that it is working at the required performance level. During this period any performance or functional issues can be worked out and any queries should be directed to the Red Hat support team. We also recommend that customers considering deploying clusters have their configurations reviewed by Red Hat support before deployment to avoid any possible support issues later on.