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Veeam Backup & Replication 9.5 Update 4
User Guide for Microsoft Hyper-V

Replication Data Paths

VM replication can work over two data paths:

Replication Data Paths Note:

Replication over WAN accelerators is supported only for snapshot replicas.

Direct Data Path

Replication over a direct data path is recommended if you replicate VMs over the LAN or fast connections. In this case, Veeam Backup & Replication transports data directly from the source host or off-host backup proxy to the target host.

Replication over WAN Accelerators

If you have a weak WAN link, you can replicate VM data over a pair of WAN accelerators. WAN accelerators provide advanced technologies to optimize VM data transfer:

WAN accelerators add a new layer in the backup infrastructure — a layer between the source Veeam Data Mover and target Veeam Data Mover. The data flow goes from the source host or off-host backup proxy over a pair of WAN accelerators to the target host.

To replicate VMs over WAN accelerators, you must deploy a WAN accelerator at each end of the WAN link:

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