We are currently working on implementing a DR strategy. Instead of SAN-SAN replication, it has been decided to have 2 live file servers replicating via DFSR. However, I don't know whether or not this is a good idea.
Example: DFS does not replicate locked files. Let's say a user has a spreadsheet open for weeks. They do save periodically, but the file still remains open. Then, the active file server goes down and users are redirected to another server, where the file hasn't been replicated.
Is there a way to mitigate that scenario? Am I misunderstanding something? Or is DFSR not designed to be a DR technology?
Edit: What other deficiencies does DFSR have in a DR context, other than my example above?