Include Redundancy and Failover into your architecture

When designing infrastructure, systems or applications, evaluate the cost and feasibility of having redundancy and/or failover built-in to your design. An environment that has designed high-availibility into the core of its ICT processes will be able to recover quicker from a disaster.

Test your redundancy after every change to your infrastructure, systems or applications,  or in the absense of changes, perform a disaster recovery simulation annually.