Exchange 2019 - Disaster Recovery

Bargavi Nagarajan 61 Reputation points


As an Exchange Administrator, I need to prepare the Exchange 2019 Disaster recovery plan. My environment is Exchange 2019 CU7 across 2 sites. Is there any documentation or step by step procedure.

Thank you.

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Ashok M 6,376 Reputation points


    Could you please be specific on your requirement? As per my understanding, if you have Exchange servers in 2 sites in a single DAG then you can perform datacenter switchover/failovers. Disaster recovery for the Exchange servers can be achieved using DAG. Kindly correct me If I misunderstood the requirement.

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  1. Kael Yao-MSFT 21,916 Reputation points Microsoft Employee

    Hi, @Bargavi Nagarajan

    As Ashok mentioned, you may consider deploying a database availability group (DAG) for high availability and site resilience.

    To deploy a DAG, you need to deploy one or more Exchange servers in both sites.
    If the DAG is with an even number of members, a witness server is also required.

    After the DAG is created, you will be able to add database copies on members of the DAG.
    If the server which currently holds the active database copy goes down, a failover will be triggered.
    The database copy on another DAG member will be activated and the clients will be redirected to this server.

    Here are two more links which may be helpful.
    All the requirements of deploying a DAG: Plan for high availability and site resilience
    Overall steps of deploying a DAG: Deploying high availability and site resilience

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