Dell EMC PowerVault MD 34XX/38XX Series Storage Arrays Administrator's Guide

The first step of creating a replicated pair begins by adding a virtual disk to the Remote Replication group on the local storage array. This virtual disk then becomes the primary virtual disk in the remote replicated pair. When a virtual disk on the remote storage array is added to same Remote Replication group, the replicated pair creation process is complete. This remote storage virtual disk becomes the secondary virtual disk in the replicated pair.

The two virtual disks -- one on the local storage array and one on the remote storage array -- essentially function as a single entity and allow you to manage the pair in tandem, not as two individual virtual disks.