in your scenario what i understand is that you used to have a DFS root name space and then under this DFS root you also have a link that is redirected to a shared folders on the two DFS servers that you used to have in order to maintain the replication between these two servers. turning off one of the servers after stoping the replication will not cause any problem to the shared files nor the shred path to the folders as long as the second server is still on and functioning but you have to make sure that all the replications are done between the two servers before stoping one of them cause some users files would not have replicated from one server to the other. also, if you have stopeed the replication between the servers correctly it should not contact each other for replication any more and replication could cause network congestion if the data replicated is pretty large.Moreover; taking off the dfs completly will not delete or erase any data the only problem is that you have to re-establish the connection for users with their data manually, you can also takes off the dfs and rebuild it from scratch as it was before crashes.