I went thorugh some posts on this discussion forum,
and it turns out there is no such way to have Redundancy when two MCUs clustered eventhough we have Conductor.
But just in case, I want to discuss one more time.
To make duplex-MCUs(when master failed during the calls, slave gets calls),
what can we do?
Suppose you have two MCU 5320, one Conductor.
When clustering MCUs and a failure occurs:
- if the master fails, so will the slave, since the slave is tied to the master.
- if the slave fails, the master will still be online and running, but without the added capacity of the slave.
If you would like total redundancy, you'd have to run both MCUs independently of each other, and use Conductor. You won't get the feature of added capacity for each MCU because they aren't clustered, but you get resiliency.
As you mentioned there are several other discussions covering this exact topic.