I have to perform a test activity.
Exchange Design Detials
a.MBX servers -3 (DAG enabled)
b.CAS/HUB-3 (cas and hub are installed on same server)
Perform a controlled individual shutdown of servers(CAS/HUB) CAS/HUB TRANSPORT servers and ensure that the exchange email service is not impacted. We will keep one server shut done at one time for 30 minutes. In this test we want to check that HA for CAS/HUB is working or not.
After shutting down one server, what are the points/test do i need to check to verify that services are working fine and the high availability feature is also working fine.