Setting up disaster recovery for Azure VM in secondary region

To keep business critical applications running 24/7/365 it is important for organizations to have a sound business continuity and disaster recovery strategy. In this article we will discuss how to set up disaster recovery for Azure VM in secondary region.

We will use Azure Site Recovery that helps manage and orchestrate disaster recovery of on-premises machines and Azure virtual machines (VM), including replication, failover, and recovery.

Pre-requisites,
  1. Recovery services vault
  2. A Virtual machine

ENABLING REPLICATION

To replicate a VM to secondary region, prepare site recovery infrastructure. In this case we are replicating from one azure region to another.

For replication from Azure to Azure, one can directly go to recovery service vault and replicate the VM.

  1. Go to recovery services vault >> Replicated Items
  2. Click on the Replicate icon and follow.

3. Select the following

  • Source: Azure
  • Source location: Region where the VM is deployed
  • Azure virtual machine deployment model: Resource manager
  • Source subscription: Subscription where the VM is deployed
  • Source Resource group: Resource group where the VM is deployed

4. Select OK to proceed to next step.

5.Select the VM to replicate

6. Target configurations

  • Target location: Secondary region where the VM is to be replicated
  • Target subscription: Subscription where the VM to be replicated

By default, the following resources are created in target region and can be customized per your need

  • Resource group
  • Virtual network
  • Cache storage account
  • Replica managed disks
  • Target availability sets (if applicable)

You can set replication policies and view extension details here

7.Click on create target resources

8.Then select Enable replication

Go to recovery services vault >> Monitoring >> Site recovery Jobs to view the jobs that are running during the replication.

Look for the following jobs

  1. Prerequisites check for enabling protection
  2. Installing Mobility Service and preparing target
  3. Enable replication
  4. Starting initial replication
  5. Updating the provider states

Once the above-mentioned jobs are over, here is what happens

  • Synchronization process begins
  • Waiting for first recovery point
  • The VM is protected

Once all processes are completed, you can view the VM by going to recovery services vault >> Replicated Items

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