Extreme AirDefense provides a feature that allows you to configure a second server as a redundant server. This server will automatically take over if the primary server fails for any reason. To enable smooth transition between the two servers, the configurations of the primary server must be synchronized with the secondary server, either manually, or automatically as per a preset schedule.
The correct way to synchronize your servers is to configure your primary server first and then synchronized your secondary server with your primary server. All configuration settings are copied from your primary server to your secondary server. After synchronization, both the servers will have the same configuration. When synchronizing these servers, the configurations from the primary server will override any configurations set on the secondary server.