The current version of Unisphere does not allow for more than a single storage system to be present in the "management domain". What this means it that you cannot currently manage multiple EMC storage arrays from within a single Unisphere session-- major bummer. While this has been promised for a future release, it's a limitation today.

On top of that, having more than one array in the storage or management domain has traditionally been a requirement of SAN Copy and MirrorView. The good news is that there are documented workarounds to use SAN Copy and MirrorView on the VNX, which can be between multiple VNXs

&nbsp;

which are shown for both SAN Copy and MirrorView below-- enjoy!