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.
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