Business disaster can come in many forms and varying sizes – from a tiny software component malfunction to power outages, large-scale natural disasters, hackers and DDoS attacks. What’s shocking is that many organizations are unaware of the types of disasters they’re guarding against, if their applications are protected, and what the consequences are if mission-critical applications are unavailable.
Effects of these disasters could range from a small interruption in service to total shutdown. And businesses are making a bad bet; according to the Aberdeen study Playing Russian Roulette with Poor Disaster Recovery:
“Businesses are betting on a 33% chance that they will experience no significant downtime while ignoring that 33% possibility that they will experience downtime that will lead to losses of over two million dollars.”
The consequences of losing are not worth playing the odds. A proper plan is needed to ensure an organization can recover in an event of total shutdown, as well as during other instances where a certain application may become unavailable or need to be restored.
Understanding Availability, Disaster Recovery and Backup:
- Availability provides granular recovery of a system by increasing its accessibility.
Take a web application as an example. This web application sits on an application server. Obviously, if something were to happen to the server, the application becomes unavailable. In order to ensure its availability, a second application server can be added so that if one server goes down, the other can guarantee the application remains accessible.
- Disaster Recovery allows for total restoration of an environment to its previous state.
In the event of a disaster, an organization can recover data from their disaster recovery site and restore all applications without a long service interruption.
If an organization has ten application servers and only one of these fails, invoking Disaster Recovery is not a viable option. In this case, ensuring the availability of the application provides for faster recovery. However, if all ten servers are corrupted, Disaster Recovery will safeguard data and provide quicker restoration.
- Backup delivers a replication of an application’s data from a secure copy.
Let’s say someone changed the coding in an application, which caused the application to stop working. High availability of this application won’t help since the other side of the system will also stop working. Since all other workloads are running normally, invoking a DRP (Disaster Recovery Plan) will also be of little help. In this instance, relying on the backup allows for the granular restoration of the piece of code that was altered.
Want to take a deeper dive into disaster recovery, backup, and availability to see how you can use different types of cloud in an effective Disaster Recovery Plan? Download your free copy of Why the Public Cloud is Not Enough: Maximizing Your Cloud Investment with a Hybrid Solution to learn more.