Make sure to make regular backups of your Namespace. This can be done easily using DFSUtil. Simply export to an .xml file on a regular basis and have your backup process back up that file. An example of the syntax needed is:

dfsutil /root:\\OW\webfarm /export:c:\NameSpaceBackups\webfarmroot.xml

I did run into something when importing the namespace.  I received the following error:

System error 1168 has occurred.
Element not found.

After some research and stumbling through it, I found out that I was using the domain name "orcsweb.com" instead of NetBIOS name "OW" in the UNC path, which the import did not like. OW is used by DFS in this case.  The export worked with either name, but the import only worked with \\OW\ which is what was in the exported XML file.