The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 2004
Filed:
Oct. 23, 2000
Wayne Charles Carlson, Tucson, AZ (US);
Gregory Tad Kishi, Oro Valley, AZ (US);
Jonathan Wayne Peake, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and system utilizing data fragments for efficiently importing/exporting a removable storage volume having a number of data files from a first virtual storage system to a second virtual storage system. The method includes writing data fragments to the end of the removable storage volume in the 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 the data files residing in the removable storage volume. Next, the removable storage volume is transferred to the 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. In a related embodiment, the data fragments include at least one data file, a file header preceding the data file and a data fragment trailer.