Zerto IRP Enterprise supports 1:1, 1:N, N:1 and N:N topologies.

1:1 = site-to-site replication with the same hypervisor on both sides (VMware to VMware; Hyper-V to Hyper-V) or different hypervisors on both sides (VMware to Hyper-V; Hyper-V to VMware. Both include bi-directional replication support.

1:N = Zerto IRP Enterprise supports replication of a VM to up to three targets, either local (same datacenter or public cloud) or remote (other datacenter or public cloud).

1:N, also known as fan-out, is defined as the same protected VM that can be replicated to multiple recovery sites.

N:1, also known as fan-in, is defined as protected VMs in multiple sites being replicated to a single recovery site.