STORAGE DEVICE AND CONTROL METHOD

Embodiments provide a storage device that measures temperature during power-saving operation and records the temperatures in a storage unit, and a control method therefor. The storage device includesa non-volatile storage unit, a temperature sensor that detects temperature, a controller that acquires temperature data output from the temperature sensor and controls the operation of the storage unit based on the temperature data, and a power source. The storage device may define the first mode or the second mode as the operation mode. During the period in which the first mode is specified, thepower supply provides the controller with the first power required to acquire the temperature data; in the period other than at least one of the timings during which the second mode is defined, the power supply provides the controller with a second power with smaller power than the first power; this power supply provides the second power to the controller for at least one timing period. The controller periodically acquires