I have three nodes in my DAG, 2 at primary and one at DR site. Everything is working fine and I have tested the failover by shutting down the servers at the primary site and ensuring we can still send/receive emails when the databases are mounted at the DR site.
The problem I'm facing is with the DR process at the bank. The DR team wants to test DR using the same process used by other application. During this drill, all replication is cut off between the primary and secondary site. The goal is to have people working at the primary site without any interruptions, while the DR team utilizes the servers at the DR site to perform their job functions, including email.
I am not sure how I would bring the replicated copies of the exchange databases at the DR site while the primary servers are still up and databases are mounted. I cannot remove the DR server from the DAG group during this process, because this requires removing the copy of the database first. Is there a way to isolate the exchange server at the DR site without removing it from the DAG, and mount the database so users can perform DR activities. Also if it makes any difference, these are Virtual machines running on VMware.
Thanks for your comments and suggestions.