Protecting Hyper-V Environments › Hyper-V Server Configuration Requirements › Considerations for Hyper-V scenarios across WAN

Considerations for Hyper-V scenarios across WAN

This section describes how to create a Hyper-V scenario and ensure a smooth failover across different subnets in WAN environment. First set up an additional IP address and then specify the details while creating the Hyper-V scenario.

1. Set up an additional NIC on the VM running on the master Hyper-V server. The IP address of this NIC will be used on Replica after the VM fails over.

   Note: Make sure that appropriate route table entries are added or updated to make both IP addresses and subnets work.

2. Create the Hyper-V scenario as usual. However, set the High Availability properties as described in the following steps:
   1. Expand Switchover and click Virtual Network mapping and choose the appropriate network mapping. Map the additional NIC/IP that you added. This IP address is used when the Replica server takes over.
   2. Enter the DNS server IP details.

      Note: make sure DNS record can be updated by the RHA engine. See Log On Account Conditions.

   3. Expand Network Traffic Redirection and click Redirect DNS. Select On and enter the following details:

      Virtual Machine IPs on Master server in DNS

      IP Address

      Specifies the IP address of the virtual machine on the master server

      Virtual Machine IPs on Replica server in DNS

      IP Address

      Specifies the additional IP address that you specified in step 1.

Hyper-V Replication and High Availability