Abstract: With the ceaseless propulsion of informatization process,a great deal of data accumulating in the production system resulting in archiving demand.Meanwhile,with increasingly enriching types of data information,big data technology enhances the function of unstructured data.This paper designed and realized the KingCloud intelligent object archiving system,which achieves classification of text files through document classification technology,provides lo-gic views of documents and achieves the acquisition of content elements through image identification,video key frame and other technologies.As for the overall storage structure,document prefetching,memory buffer,data layout and strategy perception etc.can be optimized by combining the semantic studies of file system,and data can be intelligently classified,summarized,discovered,predicted and analyzed to remarkably improve the service ability,service quality and service performance of memory system.

Key words: File system semantic,Achieve system,Document classification,Data layout,File prefetching