Hi [NAME] , Thank you for your post. After further analysis of the details provided, the Asynchronous Replication configuration can be done using any of the ports provided on the Unity array, and the system does not require an exclusive use of the integrated copper ports to run this task. Further details about the replication technologies can be found in the following document. I also recommend reviewing the following document for the setup configuration, as more in-depth details and commands will be available: Dell EMC Unity: Configuring Replication I hope that the above details are useful, however if you have any other queries, please let me know by replying to this thread.
I have two Unity 650F that I would like to setup NAS Async replication. Is there any restriction on which interface I should use because I have IO Module with 4 x 10G optical port for each SP and I have no intention to use the integrated copper 10G? I want to create two FSN logical interface, one for data traffic and the other is for replication traffic.  My understanding is I will only need two replication IP per unity system to configure async replication.
nas replication interfacenity