Hi,
Did you check the article provided by Udara Kaushalya?
You can consider about the
database availability group (DAG). Any server in a DAG can host a copy of a mailbox database from any other server in the DAG. When a server is added to a DAG, it works with the other servers in the DAG to provide automatic recovery from failures that
affect mailbox databases, such as a disk, server, or network failure.
Regards,
Lydia Zhou
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