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:
Nov. 06, 2007
Filed:
Oct. 08, 2004
Akira Nishimoto, Sagamihara, JP;
Naoto Matsunami, Hayama, JP;
Masahiko Sato, Odawara, JP;
Hidemi Baba, Odawara, JP;
Akira Nishimoto, Sagamihara, JP;
Naoto Matsunami, Hayama, JP;
Masahiko Sato, Odawara, JP;
Hidemi Baba, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
To correctly generate LAs even when out-of-order occurs. In a disk array system according to the present invention, a control unit includes: a host input/output unit that exchanges data and a control signal with a host connected to a disk array system; a disk input/output unit that exchanges data and a control signal with a disk; a cache memory that temporarily stores the data during transfer between the host input/output unit and the disk input/output unit in units of segments that are each formed by a plurality of blocks having a predetermined size; an MPU that controls an operation of the control unit by executing a control program; and a cache controller that controls input/output of the data into/from the cache memory, and the host input/output unit transfers, to the cache controller, transfer information containing the guarantee codes of the first blocks of the segments relating to the data transfer.