Device and method of managing disk cache

The embodiments described are as reduces the time to search for the disk cache and on the disk cache control apparatus and method capable of increasing the hit rate of the disk cache, a main memory for a buffer cache, Flash memory comprises a flash cache, and buffer cache and a controller for controlling the flash cache and a buffer cache or flash cache disk cache controller for the cache data blocks stored in the disk, the control unit identifies a cached data block using the metadata cache location It can be provided.