The primary context has all the information for the servers in a Production-recovery server configuration, as well as in a production-recovery- server configuration.
Similar to a primary context, the failover context has all the information for all the servers in a configuration. However, the difference is that the configuration settings the failover context contains are derived from the primary context and that it shares several attributes with the primary context.
By default, in a configuration (Production, Recovery), the recovery server becomes the failover server. In a failover event, it becomes the production server. All three servers will still be connected when a resync operation is active.
In the same configuration, to change the failover server to the recovery server change the configuration associated with the failover context by specifying the hostname of the recovery server in the following command:
rtdr -C <Primary Context ID> -F <Failover Context ID> setup