To ensure a successful virtual machine replication, you must verify that your virtual infrastructure respects certain limits before you start the replication.
The following operational limits apply to vSphere Replication:
- You can only deploy one vSphere Replication appliance on a vCenter Server instance. After you deploy another vSphere Replication appliance, during the initial configuration process in the VRMS Appliance Management Interface, vSphere Replication detects another appliance already deployed and registered as an extension to vCenter Server. To proceed with the new appliance, you must confirm.
- Each newly deployed vSphere Replication appliance can manage a maximum of 3000 replications. See https://kb.vmware.com/kb/2102453 for more information.
- vSphere Replication 8.5 uses only an embedded database and requires additional configuration to enable the support of a maximum of 3000 replications. See https://kb.vmware.com/kb/2102463.
- The maximum number of replications with 5 minute RPO can vary, depending on the network bandwidth and the change rates per disk. vSphere Replication 8.5 can accommodate 5 minute RPO for 500 VMs.
| Item | Maximum |
|---|---|
| vSphere Replication appliances per vCenter Server instance. | 1 |
| Maximum number of additional vSphere Replication servers per vSphere Replication. | 9 |
| Maximum number of protected virtual machines per vCenter Server instance. | 3000 |
| Maximum number of protected virtual machines per vSphere Replication appliance (by using the embedded vSphere Replication server.) | 300 |
| Maximum number of protected virtual machines per vSphere Replication server. | 300 |
| Maximum number of virtual machines configured for one replication at a time. | 20 |
| Maximum number of protected virtual machines with 5 minute RPO per vCenter Server instance. | 500 |
| Maximum number of protected disks per virtual machine on ESXi 8.0 or earlier version. | 64 |
| Maximum number of protected disks per host. | 8192 |
