A decade ago New Orleans and the Gulf Coast of the United States were devastated by the sixth strongest Atlantic hurricane ever recorded. The National Oceanic and Atmospheric Administration claims\u00a0Hurricane Katrina was the most destructive storm to ever strike the United States.The destruction from the hurricane itself, and the subsequent flooding that put most of New Orleans underwater knocked many businesses out of commission\u2014and more than a few completely out of existence. Thankfully, we have learned a lot of hard lessons in the wake of Hurricane Katrina that businesses can use to be better-prepared for the next major disaster.An article from USA Today in 2007\u2014two years after Hurricane Katrina\u2014estimates that 7,900 businesses in New Orleans and southeast Louisiana went out of existence as a result of Katrina. Some of those businesses failed as a result of lost revenue resulting from nearly half a million people displaced from the region, but many of those businesses failed as a direct result of the destruction and impact the storm had on their ability to continue operating.For some of the smallest businesses there really is no solution\u2014no way to guard against a catastrophe like Katrina or prepare to handle the next major disaster. Companies that are dependent on physical location or rely exclusively on revenue from local customers will always by heavily impacted by an event like Katrina. However, many businesses did learn the hard way that there are things that can and should be done to increase resiliency and facilitate business continuity during a major catastrophe.For those businesses that aren\u2019t dependent on a specific location or purely on local customers, for example, the biggest lesson from Hurricane Katrina is the same as the lesson businesses in New York learned from the terrorist attack on 9\/11. It can be summed up in the phrase \u201cDon\u2019t leave all of your eggs in one basket,\u201d with the added caveat, \u201cIf you do leave your eggs in one basket, at least put that basket in the cloud where it\u2019s safe from natural disasters.\u201d[ A LOOK BACK: The Aftermath of Hurricane Katrina ]\u201cWhen Hurricane Katrina\u2019s devastation struck New Orleans, one of our offices in the city was under water and couldn\u2019t reopen for several months,\u201d explained Kate Campion, president of CPR (Cooperative Processing Resources).Ric Jones, CIO of LifeShare Blood Centers, faced a similar tragedy. \u201cWhen Hurricane Katrina\u2019s devastation struck New Orleans, several of our regional centers were closed, demand for blood product substantially increased and donors were not able to give blood due to our site closures, interrupting the flow of business.\u201dLifeShare Blood Centers also figured out that redundancy is essential for business continuity. LifeShare works with Sungard Availability Services to provide disaster recovery and cloud-based resiliency. \u201cIf the Shreveport center is down one or two days, it can\u2019t collect the data it needs to provide blood on demand. Due to this, we have the mirror copy of our Shreveport-based data systems replicated in Sungard AS\u2019 northeast data center,\u201d said Ric Jones.The bonus lesson is to have a plan. It\u2019s almost a certainty that your business will face a major disaster event at some point and you need to have a clear plan in place that defines how to respond and maintain as much normalcy in business operations as is possible.Ric Jones warned that lack of planning by his organization could have potentially cost lives. \u201cWe did not have a disaster recovery plan in place when Katrina struck our office in Shreveport Louisiana and several other regional centers 10 years ago. The storm closed several locations, and as a result, kept blood donors from being able to give blood at a time of substantial demand increase. The levels of critical blood types dropped to dangerously low levels.\u201dEntergy\u2014one of the largest energy providers in the area\u2014also suffered the wrath of Katrina. Kay Jones, an Entergy spokesperson, explained, \u201cOur data center was in the storm's way, and we were aware of that. After the event, we made a decision to move the data center. Although we didn't have flooding in the immediate area of our data center, there was no power, our lines were down and we had to run on our generator and keep topping it off.\u201dIn response to the struggles it faced during Katrina, Entergy decided in the winter of 2006 to establish two mirror-image data centers in geographically separated regions for better resiliency. Jones said, \u201cWe retrofitted an old library in Little Rock with sturdy brick walls, moving hardware and critical applications from New Orleans piece by piece to the backup facility. We had this completed by 2008,\u201d adding, \u201cOur brand-new $30 million Jackson, Mississippi, data center was completed in 2010. We load-balance several systems, including email, between those two facilities.\u201dIt\u2019s easy to understand how a business could crumble and fail following Katrina. A 2013 study by the Ponemon Institute found that an unplanned data center outage costs an average of $7,900 per minute. That\u2019s nearly $500,000 per hour. Many of the affected businesses were much smaller \u201cMom & Pop\u201d operations that probably lost significantly less than that per minute or hour, but still enough to force the business to shut its doors. There aren\u2019t many businesses with pockets deep enough to keep things afloat when facing those kinds of losses.Thankfully, catastrophes the magnitude of Hurricane Katrina are rare. It\u2019s a decade later and parts of New Orleans are still struggling to recover from the havoc wreaked by Katrina. All it takes, though, is one fire, flood, earthquake or other disaster that knocks your business offline to demonstrate the importance of ensuring your business can withstand a catastrophic event.Make sure you have a business continuity and disaster recovery plan in place and put your mission critical systems and data in the cloud or in redundant data centers to ensure you will have access to them and be able to continue operations even if one site is completely destroyed.