Exchange Server 2013 Database Availability Group (DAG)

Do you need to create a DAG if you only have 1 Exchange Server 2013 and no other Exchange servers of any type?
Stephen HopkinsLead Cybersecurity EngineerAsked:
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IvanConnect With a Mentor System EngineerCommented:

no, you don't need to do it. There is no effect. DAG is designed to allow redundancy when you have multiple servers.

You can read about it in articles like:

Todd NelsonSystems EngineerCommented:
Not needed.  It serves no purpose to have a one member DAG.  DAGs are to make databases highly available across two or more Exchange servers.
MAS (MVE)Technical Department HeadCommented:
You can have DAG with one member but it will not help you. DAG is designed to failover to the available member when a DAG member fails. In your case it will not happen.
Only thing is you can create database on DAG which will save time when you have one more member to add in DAG in future.
Stephen HopkinsLead Cybersecurity EngineerAuthor Commented:
Thank you.
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