APPARATUS, METHOD, AND COMPUTER PROGRAM PRODUCT THEREOF FOR STORING A DATA AND DATA STORAGE SYSTEM COMPRISING THE SAME

An intermediary apparatus, an intermediary method, and a computer program product thereof for storing data in a storage apparatus, and a data storage system comprising the same are provided. The storage apparatus has a storage zone with a signature field, and the signature field stores a first signature value. The data has index information and a data signature value. After searching out the storage zone according to the index information, the intermediary apparatus extracts the first signature value from the storage zone, and then determines if the data has been stored in the storage zone according to the first signature value and the data signature value. If not, the intermediary apparatus writes the data into the storage zone; otherwise, ignores the data.