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Setting up Zerto multi-site replication on OVHcloud Managed vSphere

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The purpose of this guide is to provide step-by-step instructions to connect multiple on-premises Zerto deployments to a Managed vSphere instance. By following this guide, users will be able to establish secure multi-site replication, ensure disaster recovery readiness, and manage data protection across different sites.

 

Requirements

  • Managed vSphere Setup: A Managed vSphere environment with Zerto deployed
  • On-Premises Zerto: Zerto installed and configured on your local infrastructure.
  • VPN Information: All necessary VPN credentials, IP addresses, and keys for both on-premises and Managed vSphere environments
Info

Appropriate access to Zerto Manager on both Managed vSphere and on-premises sites.

 

Network Diagram

The following diagram illustrates the connectivity setup for multi-site Zerto replication between the customer site and Managed vSphere:

VMware network diagram

Diagram Explanation:

  • OPNSense Public IP: The public IP of the customer firewall/router.
  • OPNSense Private IP: The internal IP address of the customer firewall.
  • ZVM Private IP: The internal IP of the customer Zerto Virtual Manager.
  • Internal ZVM Network: The LAN connecting customer ZVM and vRAs.
  • OVHcloud Public IP: The public-facing IP for the Managed vSphere.
  • OVHcloud ZVM Network /23: The private network within the hosted Managed vSphere.
  • ZVM Private IP (Managed vSphere): The private IP addresses of Zerto VMs (ZVM and vRAs) hosted in Managed vSphere.

This setup ensures secure VPN connectivity between on-premises Zerto and OVHcloud Managed vSphere, allowing multi-site replication and disaster recovery.

 

Instructions

Access Zerto Manager on Managed vSphere

From the OVHcloud Control Panel, navigate to your infrastructure via the Hosted Private Cloud and Managed VMware vSphere menus.

Select your PCC (e.g., pcc-123-45-67-890) and datacenter (e.g., datacenter12345), then choose the Zerto tab.

Zerto multi site - step 1

 

Configure VPN and On-Premise Zerto Details

Click the Add a site button, enter your VPN information (IP address and encryption key), and enter the details of your on-premises Zerto deployment. Refer to our example screenshot for guidance:

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Start VPN configuration

Submit your information. The Managed vSphere will automatically start the VPN setup, allowing secure access to your on-premises Zerto site.

Zerto multi site - step 3

 

Let automated processes run

Managed vSphere will run automated tasks to configure multi-site connectivity.

Wait until the status shows Configuration deployed.

Zerto multi site - step 5

 

Connect the VPN

Connect your on-premises VPN to the Managed vSphere’s Zerto VPN and verify that the connection is active.

 

Pair the Zerto sites

Log in to the PCC Zerto, select the Sites section, and retrieve the token by choosing your site and clicking the 🔑 Generate Pairing Token button.

Zerto multi site - step 6

Log in to the on-premise Zerto, select Pair to a site with a license, and enter the pairing token you retrieved in the previous step.

Zerto multi site - step 7

Once paired, your multi-site replication setup is complete.

 

Troubleshooting Tips

  • VPN issues: Check credentials, firewall, and network settings.
  • Token/site pairing: Verify the token, ZVM IP, and Zerto license.

 

Security Considerations

  • Use strong encryption for all VPN connections.
  • Ensure secure authentication methods are in place.
  • Limit access to Zerto and Managed vSphere management interfaces.
  • Regularly review logs and monitor for suspicious activity.
  • Keep Zerto and Managed vSphere software up to date with security patches.

 

Go further

Browse all the VMware on OVHcloud guides.

Browse the rest of the OVHcloud US documentation for guides on our other products and services.

Learn more about VMware on OVHcloud on the OVHcloud US website.

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