It is recommended to enable Datacenter Activation Coordination (DAC) mode for Exchange database availability groups that meet the criteria.
Getting started with Exchange Server 2016 high availability by learning the fundamental concepts of database availability groups.
An overview of Datacenter Activation Coordination Mode and how it prevents split brain conditions in Exchange Server database availability groups.
Are lagged database copies in Exchange Server 2013 a useful feature or a waste of time and storage?
How to use PowerShell to list details of the active mailbox database copies in an Exchange Server database availability group.
In Exchange Server the Get-MailboxDatabaseCopyStatus cmdlet may return the wrong activation preference value for a database copy.
What does DatabaseCopyActivationDisabledAndMoveNow do in Exchange Server 2013, and why do we use it during maintenance?
When creating an Exchange Server 2013 DAG you may receive an error that the Exchange Trusted Subsystem is not a member of the local Administrators group on specified witness server.
How to add a database copy to a Database Availability Group member in Exchange Server 2013.
Step by step guide to installing an Exchange Server 2013 Database Availability Group
When an Exchange Server 2010 Database Availability Group has been upgraded to Exchange 2010 SP1 you may encounter an error when adding or removing database copies on a DAG member.