You must enable the AlwaysOn Availability Groups feature on every SQL Server instance in the cluster.
Log in to the EDM server.
Click StartMicrosoft SQL ServerSQL Server Configuration Manager.
In the navigation pane, click SQL Server Services.
In the content pane, right-click the SQL Server instance, and then click Properties.
In the SQL Server Properties dialog box, click the Always On Availability Groups tab, and do the following:
In the Windows Server Failover Cluster field, ensure the correct Windows Server Failover Cluster is selected.
Select the Enable Always On Availability Groups check box.
On the Log On tab, select This account, and enter the account name and password of the domain user that was used to create the Windows Server Failover Cluster.
ADDITIONAL INFORMATION:
Ensure that you include the domain in the account name. For example, myDomain\myUsername.
Click OK.
In the content pane, right-click the SQL Server instance and click Restart.
Repeat steps 1 to 8 on each SQL Server instance in the cluster.
