One of the main goals of an organization is to prevent data loss as a result of catastrophic events. The measure to be adopted is called “data backup”. It’s a simple concept: make backup copies to prevent data from becoming an unpleasant memory due to hardware, software, fire, electrical problems or other events. If concept is simple, the strategy for saving data is much more complex. Periodic data backup must be part of an efficient “disaster recovery” strategy. Different strategies and technologies are available to implement a correct backup plan. We will briefly analyze the strengths and weaknesses of the main systems available, in order to plan and apply a backup and recovery policy, taking advantage of the data and have it available in the shortest possible latency time. Optimal...