We use the snapmirror option, either manually or I wrote a script to run on a daily basis for replication. They do not replicate as a read only but as a read-write and it goes across three servers. So, I really do not understand on how you are just getting a read only when you do a snapmirror. How you contacted NetApp on your particular situation? I am sure that they could easily help with a solution. I have gone to the NOW site and found plenty of assistance there.