VNX Replicator & Mirrorview/A Storage requirements

Does anyone how to calculator storage requirements for VNX Replicator and Mirrorview between two VNX systems?  I have set up Replicator on vnxe and it automatically adds 100-105% of usuable LUN capacity for protection on both the source and the target.  Does that requirement hold for the VNX with VNX Replicator and Mirrorview as well?  I just want to make sure that when I configure capacity on the VNX it isnt going to be cut in half for protection overhead like on the VXNe.