METHOD AND SYSTEM UTILIZING DATA FRAGMENT FOR EFFICIENTLY IMPORTING/EXPORTING REMOVABLE STORAGE VOLUME

摘要

PROBLEM TO BE SOLVED: To provide a improved virtual storage system. SOLUTION: The method included writing data fragments to the end of the removable storage volume in a first virtual storage system. In an advantageous embodiment, the data fragments are written to the end of the removable storage volume when the removable storage volume is closed. The data fragments contain information, such as data file headers, that uniquely identifies data files residing in the removable storage volume. Then, the removable storage volume is transferred to a second virtual storage system. Upon receipt of the removable storage volume, the second virtual storage system updates a tape volume cache in the second virtual storage system utilizing the information contained in the data fragments without having to read each of the data files.