In the method of detection of the static data area which is the data unit where the static data inside long term not being updated or being erased of the data unit which is the erasure

摘要

Provided are a method and apparatus for wear-leveling of a nonvolatile data storage device, whereby a wear-leveling effect is maximized by storing an age value indicating a write time in each data unit of the nonvolatile data storage device and detecting a static data area based on age values. The method includes storing an age value indicating a write time in each unit assigned to write data therein, reading an age value stored in a unit, and determining a static data area based on the read age value. Accordingly, a static data area can be correctly detected without additional overhead, and a wear-leveling effect of the entire storage device can be increased by moving data to and from the static data area, thereby extending the lifespan of the storage device.