STORAGE DEVICE AND DRIVING METHOD THEREOF

摘要

PURPOSE: A storage device and a driving method are provided to rapidly rearrange the data in a storage area corresponding to the amount of data shared, thereby easily managing the data. CONSTITUTION: A data storage unit(10) includes a first storage area and a second storage area corresponding to a different physical address and stores the first data in the first storage area. A first memory(21) stores the amount of first data shared. When the amount of the shared first data is changed, a controller(30) rearranges the first data from the first storage area to a second storage area. The first storage area stores the data to which the shared amount is included in the first range. The second storage area stores the data to which the shared amount is included in the second range.