How we can select subnet when doing ASR test failover?

Hello Handian, Welcome to MS Q&A To select a subnet when performing an Azure Site Recovery (ASR) test failover, follow these steps: Create a Test Network : Ensure that the test network is isolated from the production recovery site network. The test network should mimic your production network in terms of the number of subnets, subnet names, IP address class, and subnet range. Update DNS : Update the DNS of the test network with the IP address specified for the DNS VM in the Compute and Network settings. Select Subnet During Failover : When initiating the test failover, you will be prompted to select the target network and subnet for the failover VMs. Choose the appropriate subnet from the test network that matches the configuration of your production network. By following these guidelines, you can ensure that the test failover environment closely resembles your production setup. References: Run a disaster recovery drill from Azure VMware Solution to Azure Run a disaster recovery drill to Azure Set up network mapping and IP addressing for VNets Please let us know if any further questions Kindly accept answer if it helps Thanks Deepanshu

ASR Subnet - Microsoft Q&A

Accepted answer

Deepanshu katara 12,555 Reputation points

2024-12-12T07:01:17.2+00:00
Hello Handian, Welcome to MS Q&A

To select a subnet when performing an Azure Site Recovery (ASR) test failover, follow these steps:

Create a Test Network: Ensure that the test network is isolated from the production recovery site network. The test network should mimic your production network in terms of the number of subnets, subnet names, IP address class, and subnet range.

Update DNS: Update the DNS of the test network with the IP address specified for the DNS VM in the Compute and Network settings.

Select Subnet During Failover:

When initiating the test failover, you will be prompted to select the target network and subnet for the failover VMs.

Choose the appropriate subnet from the test network that matches the configuration of your production network.

By following these guidelines, you can ensure that the test failover environment closely resembles your production setup.

References:

Run a disaster recovery drill from Azure VMware Solution to Azure

Run a disaster recovery drill to Azure

Set up network mapping and IP addressing for VNets

Please let us know if any further questions

Kindly accept answer if it helps

Thanks

Deepanshu
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Handian Sudianto 5,621 Reputation points

2024-12-12T07:47:58.9066667+00:00

Hi @Deepanshukatara-6769

We only can select the vnet not the subnet when failover test.

Deepanshu katara 12,555 Reputation points

2024-12-12T08:05:29.7633333+00:00

Ok that will come under Customize failover and test failover networking configurations

Go to Replicated Items.

Select the desired Azure VM.

Select Network and select Edit. Notice that the NIC configuration settings include the corresponding resources at the source.

Select a test failover virtual network.

Select the NIC tab you want to configure. Now, select the corresponding pre-created resources in the test failover and failover location.

Select OK.

Site Recovery will now honor these settings and ensure that the VM on failover is connected to the selected resource via the corresponding NIC.

When you trigger the test failover via Recovery Plan, it will always ask the Azure virtual network. This virtual network will be used for test failover for the machines that did not have test failover settings pre-configured.

Please check this --> https://learn.microsoft.com/en-us/azure/site-recovery/azure-to-azure-customize-networking#customize-failover-and-test-failover-networking-configurations

Handian Sudianto 5,621 Reputation points

2024-12-12T08:23:38.7266667+00:00

hi @Deepanshukatara-6769

yeah that correct, we can change from there. Thanks
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