Book Image

Learning Veeam Backup & Replication for VMware vSphere

By : Christian Mohn
Book Image

Learning Veeam Backup & Replication for VMware vSphere

By: Christian Mohn

Overview of this book

Table of Contents (13 chapters)

Replica failover and failback

A failover is the process of switching from the original VM on the source host/cluster to a replica VM on a target host/cluster. Since the replica VM is stored in a ready-to-run state, this can be done in a matter of minutes, ensuring quick access and minimal downtime, in turn ensuring a low RTO.

A failover can be either permanent or temporary until the main site is available again and a failback can be performed. A permanent failover is often used if the target site is designed to run production workloads, and subsequently a failback is used when it is desirable to move the workload back to the original site once any availability issues have been resolved.

When a failover is performed, the following happens to the replica VM:

  1. The replicated VM rolls back to the selected restore point.

  2. The replicated VM is powered on in the target host/cluster.

  3. All changes made to the replicated VM while it runs in the failover state are written to the delta file of the snapshot...