1. Launch the Exchange Management Shell (EMS)
Click on the start button and expand Microsoft Exchange 2016 and right click on Exchange Management Shell and run as admininistrator.
2. Run command to view DAG status
Run the following commmand to check the status of your DAG: Get-MailboxDatabaseCopyStatus *
3. Run command to view DAG with colour
Run the PS1 script in PowerShell to the output: .\DAGstatus.PS1