VMware vSphere Replication is an extension to VMware vCenter Server that provides hypervisor-based virtual machine replication and recovery.
vSphere Replication is an alternative to storage-based replication. It protects virtual machines from partial or complete site failures by replicating the virtual machines between the following sites:
From a source site to a target site
Within a single site from one cluster to another
From multiple source sites to a shared remote target site
vSphere Replication provides several benefits as compared to storage-based replication.
Data protection at lower cost per virtual machine.
A replication solution that allows flexibility in storage vendor selection at the source and target sites.
Overall lower cost per replication.