I have two sites and the server as below
HUB (HUBCAS role)
MBX01 (MBX role)
MBX02 (MBX role)
EXCH01 (All in one role)
I have a DAG and all above servers are members of that DAG
I have 4 databases replicating each other
All databases are mounted in MBX01
Now I wanted to do a DR test
I want to shutdown all 3 servers in site1 and mount all 4 databases in site2
and need to test the mail flow.
Then again I want to bring the site1 servers up and mount all databases in mbx01
What are the steps I need to take for failover and failback
and how much time it required..