The structure of RAID systems is based on three major differences. (1) Security (2) Performance and (3) Increased capacity of devices dedicated to data storage. A RAID controller is hardware specifically designed for processing information about the volumes and partitions of an Array. The controller board has, among others, two main functions: The first one is to perform all the calculations related to data processing and storage of parity information in the arrays. The second function is to store the configuration data of Arrays created and managed by the controller itself. A common technique used by controllers to protect themselves from problems is to store the data from the managed arrays in reserved areas on the very disks they use to create the arrays. Thus, if a controller experiences problems, a new controller can be installed and then execute the commands necessary to read the configuration data stored on the array’s disks, preventing data loss from occurring. This region of the disk is commonly known as DACStore. If, in fact, the problem is in the controller, due to the protections previously reported, it is very likely that the environment will return to working normally. However, if there is any problem with the information recorded on the disks, the data will remain inaccessible.