Installing 2 TFS 2015 and 2017 in the same DB Instance

I would like to find out if more than one TFS Databases can exist in one DB instance. For example there is any existing TFS 2015 and I want to installed a new TFS 2017 and both TFS servers using the same DB instance but with different database name. Let say TFS2015_Config, TFS2017_Config etc.

Is it possible to modify the TFS configuration database with custom database name. Thanks

Solution

Yes, you can install TFS 2015 and 2017 in the same DB Instance.

The first thing you need to check is the Requirements and compatibility, make sure the SQL Server you installed is supported for both TFS 2015 and TFS 2017.

Select New Deployment-Advanced option during the configuration.
Set Server Databases label : (eg: 2017)
Also add label or set unique name for the first new collection. (By default the name is DefaultCollection, just make sure there isn't the duplicated DB name in the instance)