Essential Guide

Managing storage for virtual environments: A complete guide

A comprehensive collection of articles, videos and more, hand-picked by our editors
Q
Problem solve Get help with specific problems with your technologies, process and projects.

How difficult is failback from a backup virtual machine?

Recovery in place allows users to run apps from a backup virtual machine. Brien Posey explains the two steps involved with failing back to the primary VM.

Each backup vendor has its own way of doing things, so the technique used to fail back to a production server after an instant recovery isn't necessarily consistent from one product to the next. Generally speaking, the process of performing a fail back is relatively straightforward.

Once the instant recovery has been performed and the backup virtual machine (VM) is up and running, the next step is to fix any problems with the production environment. Once that task has been completed, the fail back can begin.

There are two main steps in the fail back process:

  • The first can be thought of as a restoration. This essentially means copying the data from the backup virtual machine to the production environment. This is similar to a normal restoration, except the backup virtual machine remains accessible while it occurs.
  • Determine what happens to data that has accumulated since the time the instant recovery took place. When an instant recovery is performed, the backup VM remains read-only. All write operations are typically directed to a differencing disk so that the backup copy of the VM remains in a pristine condition. When it is time to perform a fail back, the write operations that have occurred since the instant recovery can be merged into the newly restored production environment.

Two common mistakes can happen during the fail back process. You can accidentally delete the write operations that have occurred since the time of the instant recovery rather than merge them into the production VM. The other mistake is to forget to perform the fail back, and leave the virtual machine running in the backup environment.

Next Steps

How instant recovery works

Quick virtual machine backup methods for almost instantaneous recovery

Perform safer, more efficient VM backups

This was last published in May 2015

PRO+

Content

Find more PRO+ content and other member only offers, here.

Essential Guide

Managing storage for virtual environments: A complete guide

Have a question for an expert?

Please add a title for your question

Get answers from a TechTarget expert on whatever's puzzling you.

You will be able to add details on the next page.

Join the conversation

1 comment

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

How difficult have you found it to fail back from a backup virtual machine?
Cancel

-ADS BY GOOGLE

SearchSolidStateStorage

SearchConvergedInfrastructure

SearchCloudStorage

SearchDisasterRecovery

SearchStorage

SearchITChannel

Close