What happens if the Main DMA goes down and the Failover DMA takes over? Will users need to relog on the Failover DMA?
In the event of a failover, the users that are directly connected to the server pair where the failover action happens will be presented with a message that the failover pair is switching between servers.
Once the failover is completed, they are automatically logged back into the system.
Adding to that, there's lot of other activities and configuration options for the DataMiner failover. This is a good reference to learn all the ins and outs : DataMiner Failover