You can add an availability group to an existing Availability Group (AG) client.
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From the CommCell Browser, expand Client Computers > existing MSSQL AG client.
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Right-click SQL Server, point to All Tasks, and then click New SQL Server.
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In the Create New Instance dialog box, set up the AG client:
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In the SQL Client box, select a client from the list displaying SQL 2012 or later clients.
Ensure that the selected SQL Server is the primary replica of the availability group that you are planning to protect.
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In the SQL Instances box, select an instance from the list of available SQL instances.
If the SQL client has only one instance, then that instance is automatically selected.
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In the Availability Group box, select an availability group from the list.
If the SQL client has only one availability group, then that availability group is automatically selected.
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Click OK.
 
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The new availability group is added to the selected AG client in the CommCell Console.
Notes
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The same availability group or multiple availability groups with the same name, cannot be added to more than one AG client.
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In the CommCell Console, the availability group is displayed by its AG instance name. However, if the availability group was created on the SQL Server by using a listener, the naming convention is Listener name\AG name.
 
What to Do Next
After adding an Availability Group to an existing AG client, you can configure the default subclient or create a new subclient the same way that you create a regular SQL subclient:
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For steps to configure the default subclient, see Manually Discovering SQL Databases.
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For steps to create a new subclient, see Creating User-Defined Subclients to Back Up a Group of SQL Databases.