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. 30, 2013
Filed:
Jun. 23, 2009
Masanori Takata, Yokohama, JP;
Hitoshi Kamei, Sagamihara, JP;
Atsushi Sutoh, Yokohama, JP;
Masaaki Iwasaki, Tachikawa, JP;
Masanori Takata, Yokohama, JP;
Hitoshi Kamei, Sagamihara, JP;
Atsushi Sutoh, Yokohama, JP;
Masaaki Iwasaki, Tachikawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The system of the present invention curbs an unnecessary inter-tier file migration and provides an inter-tier file migration that conforms to the utilization state. The hierarchical storage management system respectively migrates a frequently accessed file to the upper Tier, and an infrequently accessed file to the lower Tier. This system carries out inter-tier file migration in conformance with the utilization state. This system provides functions for anchoring a Tier for storage for a specified file, and for not permitting an inter-tier file migration.