Zerto is oversubscribed on a per-VM basis and is compatible with vSphere necessities and on top of. Zerto’s style is exclusive therein it's centered on protective your company’s applications, not simply VMs or LUNs. Zerto works by running a Zerto Virtual Manager (ZVM) that ties into vCenter as a plugin and manages the replication stack and Virtual Replication Appliances (VRA), deployed by ZVM, on every vSphere host.
Zerto Ltd. is a company providing disaster recovery software for virtualized infrastructure and the cloud. The product is basis on the 'hypervisor-based replication', a system that moves asynchronous replication from the physical storage.