Exchange Best Practices: Datacenter Activation Coordination Mode
It is recommended to enable Datacenter Activation Coordination (DAC) mode for Exchange database availability groups that meet the criteria.
March 31, 2016
Latest Articles
Introduction to Exchange Server 2016 Database Availability Groups
Getting started with Exchange Server 2016 high availability by learning the fundamental concepts of database availability groups.
November 16, 2015
Datacenter Activation Coordination Mode
An overview of Datacenter Activation Coordination Mode and how it prevents split brain conditions in Exchange Server database availability groups.
November 26, 2014
Are Lagged Database Copies a Waste of Time?
Are lagged database copies in Exchange Server 2013 a useful feature or a waste of time and storage?
November 17, 2014
PowerShell Tip: List Active Mailbox Database Copies for an Exchange Server Database Availability Group
How to use PowerShell to list details of the active mailbox database copies in an Exchange Server database availability group.
October 15, 2014
Get-MailboxDatabaseCopyStatus Displays Incorrect Activation Preference Value
In Exchange Server the Get-MailboxDatabaseCopyStatus cmdlet may return the wrong activation preference value for a database copy.
September 26, 2014
What Does DatabaseCopyActivationDisabledAndMoveNow Do?
What does DatabaseCopyActivationDisabledAndMoveNow do in Exchange Server 2013, and why do we use it during maintenance?
August 17, 2014
Using a Non-Exchange Server as an Exchange Database Availability Group File Share Witness
Creating an Exchange Database Availability Group (DAG) causes an error: the Exchange Trusted Subsystem is not a member of the local Administrators group on specified witness server.
February 7, 2013
Configuring Database Copies in an Exchange Server 2013 Database Availability Group
How to add a database copy to a Database Availability Group member in Exchange Server 2013.
February 6, 2013
Installing an Exchange Server 2013 Database Availability Group
Step by step guide to installing an Exchange Server 2013 Database Availability Group
January 30, 2013
You Can't Add the First Passive Copy of a Mailbox Database While Circular Logging is Enabled
An Exchange 2010 server may show an error when you try to add a database copy to a mailbox database that is enabled for circular logging.
March 10, 2012
Exchange 2010 Error: Registry key has subkeys and recursive removes are not supported by this method.
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.
October 13, 2010