Do you want to migrate your on-premises company workloads to the Azure cloud? And do you want to make sure you make the most of this new cloud environment, even during major IT outages? In this blog, we’ll discuss how to use Azure Site Recovery to migrate your on-premises machines to Microsoft Azure.
In this scenario, an Azure Site Recovery configuration server is deployed in VMware, Microsoft Azure Hyper V or as a physical server to sync the VM data to Azure. This configuration server will be connected to a Recovery Services Vault in Azure. This way, it is possible to fail over on-premises machines to Azure with minimal downtime.
Before failover, the following resources must be deployed in Azure:
Windows VMs starting from Windows Server 2008 SP2 can be moved to Azure. Linux machines are also supported. For a complete list of supported OSes, check here.
When you have deployed and configured your server, open the Azure Portal and navigate to the Recovery Services Vault. You can now add the severs that need to be migrated. Once added, your servers will be synced to a cache storage account. So the server can stay online at the on-premises environment while the changes are constantly being written to Azure. The initial sync may take some time depending on your internet connection. Azure Site Recovery will replicate data over a public endpoint (internet). It is also possible to throttle the bandwidth of the configuration server in order to minimize impact on your company network.
The infrastructure will look like this:
There are different options to perform the failover. You can shut down the source server (on-premises) before triggering the failover. Depending on the Recovery Point option you have chosen, Site Recovery will or will not sync your most recent changes and create the VM in Azure.
You have four Recovery Point options when performing the migration:
Once your server is migrated to Azure, you can disable or remove the server from your on-premises environment. If there are issues with the VM in Azure, it is possible to revert the process and bring the VM back to the on-premises datacenter. These options are also provided in the same Site Recovery Vault.
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