I asked part of this question before, but I guess I'm missing something. I'm not clear on HOW to make sure that our DFS-N fault tolerance is configured correctly. We have 2 domain controllers (A and B, both running Win 2008 R2 - domain at 2003 forest functional level). I have installed the DFS Management features on both servers. I created the namespace to using it seems to work well UNLESS server A is down. When server A is down, the shares are inaccessible (drives are mapped via GPO correctly, but you can't open the location). Ideally, we'd like either of our DC servers to handle the requests for namespace resolution when the other is down. I thought I had it configured right (using "dfsutil server xyz" it shows that both servers are hosting the DFS root), but it isn't fault tolerant. I've had a difficult time finding specific information on how to configure this fault tolerance and I'm wondering if anyone has specific instructions on how to configure this.
Just to be clear, we are NOT using DFS-Replication and we're NOT trying to get DFS-R to be fault tolerant, just the Namespace handling.