Set up disaster recovery to Azure for on-premises VMware VMs

This tutorial shows you how to set up disaster recovery to Azure for on-premises VMware VMs running Windows. In this tutorial, you learn how to:

  • Specify the replication source and target.
  • Set up the source replication environment, including on-premises Site Recovery components, and the target replication environment.
  • Create a replication policy
  • Enable replication for a VM

This is the third tutorial in a series. This tutorial assumes that you have already completed the tasks in the previous tutorials:

  1. Prepare Azure
  2. Prepare on-premises VMware

Before you start, it's helpful to review the architecture for disaster recovery scenario.

Select a replication goal

  1. In Recovery Services vaults, click the vault name, ContosoVMVault.
  2. In Getting Started, click Site Recovery. Then click Prepare Infrastructure.
  3. In Protection goal > Where are your machines located, select On-premises.
  4. In Where do you want to replicate your machines, select **To Azure.
  5. In Are your machines virtualized, select Yes, with VMware vSphere Hypervisor. Then click OK.

Set up the source environment

To set up the source environment, you download the Site Recovery Unified Setup file. You run setup to install on-premises Site Recovery components, register VMware servers in the vault, and discover on-premises VMs.

Verify on-premises Site Recovery requirements

You need a single, highly-available, on-premises VMware VM to host on-premises Site Recovery components. Components include the configuration server, process server, and master target server.

  • The configuration server coordinates communications between on-premises and Azure, and manages data replication.
  • The process server acts as a replication gateway. Receives replication data, optimizes it with caching, compression, and encryption, and sends it to Azure storage. The process server also installs the Mobility service on VMs you want to replicate, and performs automatic discovery of on-premises VMware VMs.
  • The master target server handles replication data during failback from Azure.

The VM should meet the following requirements.

Requirement Details
Number of CPU cores 8
Number of disks 3 - OS disk, process server cache disk, retention drive (for failback)
Disk free space (process server cache) 600 GB
Disk free space (retention disk) 600 GB
Operating system version Windows Server 2012 R2
Operating system locale English (en-us)
VMware vSphere PowerCLI version PowerCLI 6.0
Windows Server roles Don't enable these roles: Active Directory Domain Services, Internet Information Services, Hyper-V
IP address type Static
Ports 443 (Control channel orchestration)
9443 (Data transport)

In addition:

  • Make sure that the system clock on the VM is synchronized with a Time Server. Time must be synchronized to within 15 minutes. If it's greater setup fails. setup fails.
  • Make sure that the configuration server VM can access these URLs:

    * Used for access control and identity management. (ACS based authentication will be deprecated by December 2017) Used for access control and identity management using AAD \* Used for replication data transfer and coordination.

    \* Used for access to the storage account that stores replicated data.

    \* Used for replication management operations and coordination. and Used to check time synchronization between system and global time.

    URLs for Azure Government cloud:

  • Make sure that IP address-based firewall rules allow communication to Azure.

    • Allow the Azure datacenter IP ranges, port 443 (HTTPS), and port 9443 (data replication).
    • Allow IP address ranges for the Azure region of your subscription, and for West US (used for access control and identity management).

Download the Site Recovery Unified Setup file

  1. In the vault > Prepare Infrastructure, click Source.
  2. In Prepare source, click +Configuration server.
  3. In Add Server, check that Configuration Server appears in Server type.
  4. Download the Site Recovery Unified Setup installation file.
  5. Download the vault registration key. You need this when you run Unified Setup. The key is valid for five days after you generate it.

    Set up source

Set up the configuration server

  1. Run the Unified Setup installation file.
  2. In Before You Begin, select Install the configuration server and process server then click Next.

  3. In Third Party Software License, click I Accept to download and install MySQL, then click Next.

  4. In Registration, select the registration key you downloaded from the vault.

  5. In Internet Settings, specify how the Provider running on the configuration server connects to Azure Site Recovery over the Internet.

    • If you want to connect with the proxy that's currently set up on the machine, select Connect to Azure Site Recovery using a proxy server.
    • If you want the Provider to connect directly, select Connect directly to Azure Site Recovery without a proxy server.
    • If the existing proxy requires authentication, or if you want to use a custom proxy for the Provider connection, select Connect with custom proxy settings, and specify the address, port, and credentials.


  6. In Prerequisites Check, Setup runs a check to make sure that installation can run. If a warning appears about the Global time sync check, verify that the time on the system clock (Date and Time settings) is the same as the time zone.


  7. In MySQL Configuration, create credentials for logging on to the MySQL server instance that is installed.

  8. In Environment Details, select Yes to protect VMware VMs. Setup checks that PowerCLI 6.0 is installed.

  9. In Install Location, select where you want to install the binaries and store the cache. The drive you select must have at least 5 GB of disk space available, but we recommend a cache drive with at least 600 GB of free space.

  10. In Network Selection, specify the listener (network adapter and SSL port) on which the configuration server sends and receives replication data. Port 9443 is the default port used for sending and receiving replication traffic, but you can modify this port number to suit your environment's requirements. We also open port 443, which is used to orchestrate replication operations. Do not use port 443 for sending or receiving replication traffic.

  11. In Summary, review the information and click Install. Setup installs the configuration server and registers with it the Azure Site Recovery service.


    When installation finishes, a passphrase is generated. You will need this when you enable replication, so copy it and keep it in a secure location. The server is displayed on the Settings > Servers pane in the vault.

Configure automatic discovery

To discover VMs, the configuration server needs to connect to on-premises VMware servers. For the purposes of this tutorial, add the vCenter server, or vSphere hosts, using an account that has administrator privileges on the server. You created this account in the previous tutorial.

To add the account:

  1. On the configuration server VM, launch CSPSConfigtool.exe. It is available as a shortcut on the desktop and located in the install location\home\svsystems\bin folder.

  2. Click Manage Accounts > Add Account.

    Add account

  3. In Account Details, add the account that will be used for automatic discovery.


To add the VMware server:

  1. Open the Azure portal and click on All resources.
  2. Click on the Recovery Service vault named ContosoVMVault.
  3. Click Site Recovery > Prepare Infrastructure > Source
  4. Select +vCenter, to connect to a vCenter server or vSphere ESXi host.
  5. In Add vCenter, specify a friendly name for the server. Then, specify the IP address or FQDN.
  6. Leave the port set to 443, unless your VMware servers listen for requests on a different port.
  7. Select the account to use for connecting to the server. Click OK.

Site Recovery connects to VMware servers using the specified settings, and discovers VMs.


It can take 15 minutes or more for the account name to appear in the portal. To update immediately, click Configuration Servers > server name > Refresh Server.

Set up the target environment

Select and verify target resources.

  1. Click Prepare infrastructure > Target, and select the Azure subscription you want to use.
  2. Specify whether your target deployment model is Resource Manager-based, or classic.
  3. Site Recovery checks that you have one or more compatible Azure storage accounts and networks.


Create a replication policy

  1. Open the Azure portal and click on All resources.
  2. Click on the Recovery Service vault named ContosoVMVault.
  3. To create a replication policy, click Site Recovery infrastructure > Replication Policies > +Replication Policy.
  4. In Create replication policy, specify a policy name VMwareRepPolicy.
  5. In RPO threshold, use the default of 60 minutes. This value defines how often recovery points are created. An alert is generated if continuous replication exceeds this limit.
  6. In Recovery point retention, use the default of 24 hours for how long the retention window is for each recovery point. For this tutorial we select 72 hours. Replicated VMs can be recovered to any point in a window.
  7. In App-consistent snapshot frequency, use the default of 60 minutes for the frequency that application-consistent snapshots are created. Click OK to create the policy.


The policy is automatically associated with the configuration server. By default, a matching policy is automatically created for failback. For example, if the replication policy is rep-policy then the failback policy will be rep-policy-failback. This policy isn't used until you initiate a failback from Azure.

Enable replication

Site Recovery installs the Mobility service when replication is enabled for a VM. It can take 15 minutes or longer for changes to take effect and appear in the portal.

Enable replication as follows:

  1. Click Replicate application > Source.
  2. In Source, select the configuration server.
  3. In Machine type, select Virtual Machines.
  4. In vCenter/vSphere Hypervisor, select the vCenter server that manages the vSphere host, or select the host.
  5. Select the process server (configuration server). IThen click OK.
  6. In Target, select the subscription and the resource group in which you want to create the failed over VMs. Choose the deployment model that you want to use in Azure (classic or resource management), for the failed over VMs.
  7. Select the Azure storage account you want to use for replicating data.
  8. Select the Azure network and subnet to which Azure VMs will connect, when they're created after failover.
  9. Select Configure now for selected machines, to apply the network setting to all machines you select for protection. Select Configure later to select the Azure network per machine.
  10. In Virtual Machines > Select virtual machines, click and select each machine you want to replicate. You can only select machines for which replication can be enabled. Then click OK.
  11. In Properties > Configure properties, select the account that will be used by the process server to automatically install the Mobility service on the machine.
  12. In Replication settings > Configure replication settings, verify that the correct replication policy is selected.
  13. Click Enable Replication.

You can track progress of the Enable Protection job in Settings > Jobs > Site Recovery Jobs. After the Finalize Protection job runs the machine is ready for failover.

To monitor VMs you add, you can check the last discovered time for VMs in Configuration Servers

Last Contact At. To add VMs without waiting for the scheduled discovery, highlight the configuration server (don’t click it), and click Refresh.

Next steps