A data storage and data backup device that offers automatic reduction of duplicate data storage, and that easily can be connected to computing devices, computing systems and networks of computing devices. The device offers high protection against destruction or modification of already stored data, and requires flipping a physical switch and possibly require user authentication in order for the protection to be temporarily bypassed. Several connection types of the device to the computer systems are supported such as wired, wireless like Bluetooth or WI-FI, but not limited to those.