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. 20, 2007
Filed:
Aug. 25, 2004
Ikuya Yagisawa, Tokyo, JP;
Takuji Ogawa, Odawara, JP;
Kenichi Takamoto, Odawara, JP;
Yoshinori Tsuneda, Odawara, JP;
Azuma Kano, Odawara, JP;
Ikuya Yagisawa, Tokyo, JP;
Takuji Ogawa, Odawara, JP;
Kenichi Takamoto, Odawara, JP;
Yoshinori Tsuneda, Odawara, JP;
Azuma Kano, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A diskarray system has a diskarray controller and a plurality of disk devices. Each of the disk devices has a media, a head, and a head position controller. The diskarray controller performs online data check operation, and stops the online data check operation over the disk device at first predetermined timing. After stopping the online data check operation, the diskarray controller issues an unload enable command to the disk device so as to move the head to a position different from positions at which the head reads or writes data from or to the media. The head position controller of the disk device moves the position of the head on the basis of the received unload enable command.