When it comes to performing maintenance on servers that are part of a DAG, you'll need to move any active databases off to another member in the DAG. This will allow you to install patches or take the server down for hardware repairs or upgrades, without affecting database availability. This recipe will show you how to use some of the built-in PowerShell scripts installed by Exchange 2013 that can be used to place a server in and out of the maintenance mode.
Let's see how to perform maintenance on a DAG using the following steps:
StartDagServerMaintenance.ps1script and specify the server name ...