We have a single DAG deployment (exchange 2013) across two locations which are our Primary and Secondary Datacentres. With a single DAG deployment we run in an Active/Passive
Environment, Databases should not split between sites to ensure that the Failover Cluster can always maintain Quorum correctly.
We do have 2 CAS server and 2 mailbox server (1 CAS and 1 mailbox server in each DC), DC 2 which is our exchange service running from will shutdown for maintenance and we need to have our service running from DC 1,Can you please advice what is
the best practice for moving the service to DC1?
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Exchange 2013 failover
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