What is disaster recovery?

Learn what exactly constitutes disaster recovery and how many different levels of disaster recovery exist.

Disaster recovery is the ability to recover your operations after some type of outage or disaster or some type of event that renders your operations inoperable. We subscribe to a 3DR model, or three levels of disaster recovery that you should implement.

The first is data recovery. If you have a personal disaster, if you lose a file and need to recover it, are you going to be able to do that by making sure you have the ability to recover the data first, whether it's just a simple file or applications from a server?

The second level of disaster recovery is more of a traditional or typical disaster recovery theme. In this case you might have a type of a disaster where a data center gets flooded or a whole array goes down, and you need to be able to recover all of the operations related to that, so that's a little higher of a level.

About the expert
Bob Laliberte is an analyst with the Enterprise Strategy Group. He focuses on storage management software, infrastructure, professional services and business continuity. Listen to Bob's answers on data recovery by downloading his disaster recovery services FAQ podcast.

The third and highest level, what we call a doomsday level, is something like a regional disaster. An example of that is Hurricane Katrina, where it's not just affecting your data center but the entire region. How do you recover from a disaster like that?

Return to the disaster recovery services FAQ guide and read all of Bob's expert responses.

This was first published in May 2008

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