What is the expected behaviour in an environment that has an HA Pair and Non Fail Over Replica (NFR), when a DR exercise is invoked?
Customer DR testing exercise.
Replication ONLY happens from the true Primary appliance. When the Replica is in Primary mode it does not send any data to the NFR. The true Primary is the only appliance that sends out updates to the Replica, and if installed the Non-Failover Replica.
To use the hub and spoke analogy, the Primary is the hub and the Replica and NFR are the spokes.
The NFR is typically implemented in the off chance a catastrophic event takes out the Primary and Replica appliances. Some customer scenarios, the Primary and Replica are physically located relatively close to one another, same data center or city for example and the NFR is placed in a different region.
The NFR then allows recovery using the last backup received from the Primary.
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