Support redundant OPC UA servers

OPC UA standard allows for two or more OPC UA servers to be set up in a failover set. Basically, there is a primary OPC UA server that is serving data. And a secondary standby server that is not serving data and you probably can't even connect to it. The 2 OPC servers talk to each other and if the primary fails, the secondary starts accepting connections and sending data.

Here is a picture of Emerson Ovation's OPC UA Configuration. You can see there is an Endpoint and a Partner Endpoint (standby).

 The only way to accept this architecture with the current OPC UA collector is to have 2 collector sessions, one pointed to each server. But, you'll be guaranteed to have one in a failed state at all time. Which is not good for your logs. And are we sure that the collector will connect after having been refused for weeks at a time?