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:
Jul. 13, 2010
Filed:
Nov. 09, 2006
Applicants:
Masaru Tsukada, Odawara, JP;
Isamu Kurokawa, Odawara, JP;
Ran Ogata, Odawara, JP;
Inventors:
Assignee:
Hitachi, Ltd, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and system are provided that can realize data migration between volumes accessed by a host computer without stopping the host computer accessing the volumes. A host computeris connected to a storage subsystemvia pathsand, and the storage subsystemis connected to a storage subsystemvia a path(or pathsand). While data is being copied from an old volumein the storage subsystem(a migration source) to a new volumein the storage subsystem(a migration destination) via the path(or pathsand), if a request for I/O processing is sent from the host computer, the storage subsystemresponds and handles that I/O processing.