A system for cache synchronization includes a data managing unit and a storage medium. The data managing unit is configured to control storing of data of a buffer cache of the storage medium, in response to an event signal received from a host, by classifying the data of the buffer cache into random data and sequential data. The storage medium includes a first area and a second area, and is configured to store the random data and an address information map in the first area, and to store the sequential data in the second area.