Watch Exchange 2019:- What is DAC mode

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Experience Level: Advanced
Edward van Biljon
Experienced Messaging Specialist with a demonstrated history of working in the information technology and services industry.
In this video we chat to you about Datacenter Activation Coordination mode (DAC) in Exchange 2019 and how to enable it to avoid split brain scenarios in Exchange. DAC can only be configured using PowerShell.

Video Steps

1. Launch Exchange Management Shell

Click on start, expand Exchange Server 2019 and right click on the Exchange Management Shell and run as administrator

2. Type in command

Type in the following command to enable DAC mode: Set-DatabaseAvailabilityGroup -Identity DAG01 -DatacenterActivationMode DagOnly
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