APPARATUS AND METHOD FOR UNITED DATA MANAGEMENT FOR NON-VOLATILE BUFFER CACHE AND NON-VOLATILE STORAGE

摘要

An integrated non-volatile memory control system of the present invention may include a non-volatile buffer cache, a non-volatile journal area, a non-volatile storage, and an integrated memory control unit. The integrated memory control unit sets data blocks of the non-volatile storage to one from among an available state, an erasable state and a non-available state according to whether caching, journaling, or a clean cache is performed, considers data stored in the corresponding data block as original data if the data block of the non-volatile storage is in the available state or erasable state, and considers the data stored either in a corresponding cache block or a corresponding journal block as the original data if the data block of the non-volatile storage is in the non-available state. Therefore, the integrated memory control unit may operate to respectively perform a read operation, a write operation, a commit operation and a checkpoint operation for the cache block within the non-volatile buffer cache and the journal block within the non-volatile journal area so as to maintain the most recent data consistent with the original data in one from among the non-volatile buffer cache, the non-volatile journal area and the non-volatile storage.