feat(zerto): create guide about multisite

pages/hosted_private_cloud/hosted_private_cloud_powered_by_vmware/zerto_multi_site/guide.en-gb.md

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+---
+title: "Setting up Multi-Site Replication on Managed vSphere"
+excerpt: "Step-by-step guide to connect multiple Zerto deployments on Managed vSphere for secure and efficient disaster recovery"
+updated: 2025-12-02
+---
+
+## Objective
+
+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.
+
+**Find out how to set up Zerto Virtual Replication between your Hosted Private Cloud platforms.**
+
+## Requirements 
+
+- **Managed vSphere Setup**: A Managed vSphere environment with Zerto already 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.
+
+> [!primary]
+>
+> Appropriate administrative access to Zerto Manager on both Managed vSphere and on-premises sites.
+>
+
+## Instructions
+
+### 1 - Access Zerto Manager on Managed vSphere
+
+- Log in to the [OVHcloud Control Panel](/links/manager), then go to the `Hosted Private Cloud`{.action} section.
+- Click the `Managed VMware vSphere`{.action} menu and select the infrastructure concerned.
+- Navigate to the `Datacenters`{.action} tab and select the datacenter.
+- Navigate to the `Zerto`{.action} tab.
+
+![zerto manager tab](images/zerto_manager_tab.png){.thumbnail}
+
+### 2 - Add your On-Premises Zerto Site
+
+Click the `Add a website`{.action} 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:
+
+![zerto manager add onprem zerto](images/zerto_manager_add_onprem_zerto.png){.thumbnail}
+
+### 3 - 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 manager vpn configuration](images/zerto_manager_vpn_configuration.png){.thumbnail}
+
+### 4 - Let Automated Processes Run
+
+Managed vSphere will run automated tasks to configure multi-site connectivity.
+
+![zerto automated processes](images/zerto_automated_processes.png){.thumbnail}
+
+Wait until the status shows `Configuration deployed`.
+
+![zerto manager status finished](images/zerto_status_finished.png){.thumbnail}
+
+### 5 - Connect the VPN
+
+Connect your on-premises VPN to the Managed vSphere’s Zerto VPN and verify that the connection is active.
+
+### 6 - Pair the Zerto Sites
+
+- On Managed vSphere Zerto, go to `Sites`{.action} and get the token:
+
+![zerto get token](images/zerto_get_token.png){.thumbnail}
+
+- On your on-premises Zerto, choose `Pair to a site`{.action} and enter the Managed vSphere Zerto IP and token:
+
+![zerto pair site](images/zerto_pair_site.png){.thumbnail}
+
+Once paired, your multi-site replication setup is complete.
+
+## Network Diagram
+
+The following diagram illustrates the connectivity setup for multi-site Zerto replication between the customer site and Managed vSphere:
+
+![network diagram](images/network_diagram.png){.thumbnail}
+
+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.
+
+## Troubleshooting Tips
+
+- **VPN issues**: Check credentials, firewall and network settings.
+- **Token/site pairing**: Verify token, ZVM IP and licensing.
+
+## 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 
+
+If you need training or technical assistance to implement our solutions, contact your sales representative or click on [this link](/links/professional-services) to get a quote and ask our Professional Services experts for a custom analysis of your project.
+
+Ask questions, give your feedback and interact directly with the team building our Hosted Private Cloud services on the dedicated [Discord](https://discord.gg/ovhcloud) channel.
+
+Join our [community of users](/links/community).

pages/hosted_private_cloud/hosted_private_cloud_powered_by_vmware/zerto_multi_site/meta.yaml

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+id: 35e8090a-b1c6-432f-9d94-567398d35c85
+full_slug: vmware-zerto-multi-site-setup