DAG Management CMDlets

DAG Management PowerShell Commands

Get DAG Status

Get-DatabaseAvailabilityGroup <dag name> -Status | fl

StartDagServerMaintenance.ps1 script to put the DAG member in maintenance mode

.\StartDagServerMaintenance.ps1 -serverName <server name>

StopDagServerMaintenance.ps1 script to take the DAG member out of maintenance mode

.\StopDagServerMaintenance.ps1 -serverName <server name>

Find DatabaseCopyAutoActivationPolicy for all Servers

Get-MailboxServer | Sort-Object -Property DatabaseCopyAutoActivationPolicy | ft name,DatabaseCopyAutoActivationPolicy -AutoSize

Get Maintenance Status

Get-DatabaseAvailabilityGroup <dag name> -Status | fl Servers, ServersInMaintenance

Get ALL Databases and Active Preference information NEAT

Get-MailboxDatabase | Sort Name | ft Name,ServerName,MountedOnServer, ActivationPreference -AutoSize

Get Databases sorted by Active Server

Get-MailboxDatabase | Sort-Object -Property MountedonServer | ft Name,ServerName,MountedOnServer, ActivationPreference -AutoSize

Get Number of Databases in DAG


Get All databases and Activation Preference information

Get-MailboxDatabase | ft name, server, activationpreference -AutoSize

Get Specific databases and Activation Preference information

Get-MailboxDatabase -Identity ‘<database name> | fl name, server, activationpreference

Get Primary Active Manager (PAM)

Get-DatabaseAvailabilityGroup -Identity <dag name> -Status | fl name,primaryactivemanager

Move PAM to another server

cluster.exe <dag name> group “cluster group” /moveto:<server name>

To block DB activation (switch site as needed)

Get-ExchangeServer | where { $_.Site -like ‘DOMAIN.ORG/Configuration/Sites/Site’ } | Get-MailboxServer | Set-MailboxServer –DatabaseCopyAutoActivationPolicy Blocked

Enable DAC Mode

Set-DatabaseAvailabilityGroup –identity “<dag name>” –DatacenterActivationMode DagOnly

Run RedistributeActiveDatabases.ps1 script to re-balance the active database copies across the DAG

.\RedistributeActiveDatabases.ps1 -DagName <dag name> -BalanceDbsByActivationPreference -ShowFinalDatabaseDistribution -Confirm:$false > DagConfig.txt

Remove Server from Dag

Remove-DatabaseAvailabilityGroupServer -Identity <dag name> -MailboxServer <server name>

Add Server to DAG

ADD-DatabaseAvailabilityGroupServer -Identity <dag name> -MailboxServer <server name>

Unblock all databases hosted on a server 

Set-MailboxServer –identity <server name> –DatabaseCopyAutoActivationPolicy Unrestricted

Block all databases hosted on Server

Set-MailboxServer –identity <server name> –DatabaseCopyAutoActivationPolicy Blocked

Set Mailbox Database Copy Activation Copy

Set-MailboxDatabaseCopy -Identity EX10MBX02\EX10SRV02 -ActivationPreference 1

To block a database copy from getting activated automatically

Suspend-MailboxDatabaseCopy –identity EX10mbx01\EX10SRV03 –ActivationOnly

To reverse the unblock process

Resume-MailboxDatabaseCopy –identity EX10mbx04\EX10SRV13

Leave a Reply

Your email address will not be published. Required fields are marked *