A significant system configuration difference between a GroupWise system in a clustering environment and a GroupWise system in a regular environment is that you need to create a separate domain to house each GroupWise gateway. The gateway domain should be created in its own resource group. This enables the gateway to fail over independently from other GroupWise components.
If you have set up the Internet Agent or WebAccess in your clustered GroupWise system, you should already have the skills necessary to set up a GroupWise gateway as well.
GroupWise gateways that have not received recent development have not been thoroughly tested in a clustering environment. If you are currently using such GroupWise gateways, you might want to leave them outside of your cluster.