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:
Feb. 25, 2014
Filed:
Jun. 25, 2008
Taiki Miyaji, Yokohama, JP;
Takeyuki Imazu, Kamakura, JP;
Nobuhiro Maki, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A storage device control method for operating a logical volume to which a control command cannot be issued directly from a host computer is provided. The host computer manages a storage device. The storage device includes a disk device which provides logical volumes and a disk control device which controls the disk device. The host computer issues a control command to a recognized volume in the disk control device. The disk control device operates a recognized volume which is an issue destination of the control command or an unrecognized volume contained in the control command. A logical volume to which the control command is to be issued from the host computer is determined by using definition information (a disk information table, a copy pair information table, or a copy group information table) concerning copy operation retained by storage control software which operates on the host computer.