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:
Oct. 10, 2006
Filed:
Feb. 20, 2004
Masahiro Arai, Kawasaki, JP;
Naoto Matsunami, Hayama, JP;
Ikuya Yagisawa, Tokyo, JP;
Akihiro Mannen, Yokohama, JP;
Masahiko Sato, Odawara, JP;
Masahiro Arai, Kawasaki, JP;
Naoto Matsunami, Hayama, JP;
Ikuya Yagisawa, Tokyo, JP;
Akihiro Mannen, Yokohama, JP;
Masahiko Sato, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A magnetic disk array device is equipped with ATA magnetic disks, at least one disk array controller for controlling the ATA magnetic disks, and at least one processing offload function module provided between the disk array controller and the ATA magnetic disk. The disk array controller outputs one of a standard processing FC command for performing a standard processing such as a read or write processing, and an offload processing FC command for performing a vendor-unique offload processing. The processing offload function module performs a command mapping for the standard processing FC command and issues to the ATA magnetic disk a corresponding ATA command, and prepares a group of ATA commands for the offload processing FC command for optimum processing in an ATA protocol.