What is a disaster?
When planning for disaster recovery, evaluate your plan for these three main categories of disaster:
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Natural disasters, such as earthquakes or floods
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Technical failures, such as power failure or network connectivity
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Human actions, such as inadvertent misconfiguration or unauthorized/outside party access or modification
Each of these potential disasters will also have a geographical impact that can be local, regional, country-wide, continental, or global. Both the nature of the disaster and the geographical impact are important when considering your disaster recovery strategy. For example, you can mitigate a local flooding issue causing a data center outage by employing a Multi-AZ strategy, since it would not affect more than one Availability Zone. However, an attack on production data would require you to invoke a disaster recovery strategy that fails over to backup data in another AWS Region.