The Active Directory Topology service on server '{0}' is hard coded to use Active Directory domain controller servers '{1}' ...

The Active Directory Topology service on server '{0}' is hard coded to use Active Directory domain controller servers '{1}' for configuration. This configuration isn't recommended because it has limited fail-over options. Having multiple domain controllers configured is recommended for redundancy.  Click on the link 'get help fixing this issue' in the actions pane located on the right side of the screen for assistance.