Help Center
Choose product document...
Veeam Backup & Replication 9.5 Update 4
User Guide for Microsoft Hyper-V

Undo Failover

To revert a VM replica to its pre-failover state, you can undo failover.

When you undo failover, you switch back from the VM replica to the original VM. Veeam Backup & Replication discards all changes made to the VM replica while it was in the Failover state. You can use the undo failover scenario if you have failed over to the VM replica for testing and troubleshooting purposes and want to get back to the normal operation mode.

The undo failover operation is performed in the following way:

  1. Veeam Backup & Replication reverts the VM replica to its pre-failover state. To do this, Veeam Backup & Replication powers off the VM replica and gets it back to the state of the latest snapshot in the snapshot chain. Changes that were written to the snapshot differencing disk while the VM replica was in the Failover state are discarded.
  2. The state of the VM replica gets back to Normal, and Veeam Backup & Replication resumes replication activities for the original VM on the source host.

Undo Failover 

Related Topics

Undoing Failover

Veeam Large Logo

User Guide for VMware vSphere

User Guide for Microsoft Hyper-V

Enterprise Manager User Guide

Veeam Cloud Connect Guide

Veeam Agent Management Guide

Veeam Explorers User Guide

Backup and Restore of SQL Server Databases

Veeam Plug-ins for Enterprise Applications

PowerShell Reference

Veeam Explorers PowerShell Reference

RESTful API Reference

Required Permissions Reference

Quick Start Guide for VMware vSphere

Quick Start Guide for Microsoft Hyper-V

Veeam Availability for Nutanix AHV Documentation

Veeam Backup for Microsoft Office 365 Documentation

Veeam ONE Documentation

Veeam Agent for Windows Documentation

Veeam Agent for Linux Documentation

Veeam Management Pack Documentation