If you run on a production system, I suggest dont do this for different os replication. 
Hi Everyone! Use Device is Dell EMC Unity 400 x 2ea and use sync replication. Local system : 5.1.2 / Remote system : 4.5.1 -> That two codes are different than expected, So I have a question. - Is there an issue that occurs when the code is different in sync replication? - Thanks!
Unity Code different issue