Failback undo is one of the ways to finalize failback. You can use this option if the vApp to which you failed back (the production vApp) works in a wrong way and you want to get back to the replica.
The undo failback operation is performed in the following way:
- Veeam Backup & Replication powers off the production vApp.
- Veeam Backup & Replication reverts the vApp replica to its pre-failback state.
- Veeam Backup & Replication powers on the vApp replica and changes the vApp replica state from Failback or Ready to Switch to Failover.