file server needs to be replaced

thanks for the time.

I'm in a bit of a bind.  Need to replace our file server.  The concern is that it is part of a DFS service.  It is the root server.  I am guessing I cannot just go in and create a new file server and add it in.  My initial thought process was to shutdown the failing file server and bring up the second one with the same name.  But I am thinking that wont work.  Will using the File Server Migration toolkit work better? Also I want to keep the same root target name.  For example I have fileserver01 as the root DFS target for all the DFS shares. How do I go about keeping that?  Renaming fileserver02 to 01 will not work?

Thank you again.