Dell PowerVault MD 32XX/36XX Series Storage Arrays CLI Guide

Standard Remote Replication (asynchronous) is a premium feature that provides RAID controller-based data replication between a local and remote storage array on a per-virtual disk basis. By identifying primary (local) and secondary (remote) virtual disk pairs, called replicated pairs, write operations to the primary virtual disk of the pair are tracked by the RAID controller firmware and captured in a point-in-time image and transferred to the secondary virtual disk in the pair.

Remote Replication groups allow you to manage synchronization of both virtual disks to create a consistent data set across local and remote storage arrays. Point-in-time images on the primary virtual disk and the secondary virtual disk can be resynchronized in a batch approach that increases replication throughput. When data synchronization completes, the system uses the point-in-time images on the secondary virtual disk to ensure that the data is maintained in a consistent state during subsequent synchronization operations to the secondary virtual disk.