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:
Apr. 15, 2008
Filed:
Mar. 19, 2004
Seiichi Higaki, Ninomiya, JP;
Hisao Honma, Odawara, JP;
Seiichi Higaki, Ninomiya, JP;
Hisao Honma, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention provides a storage control device which enables the time between failures to prolong as much as possible, though it uses HDD's whose mean time between failures is relatively short. The storage control device controls spindle motors in a manner that a spindle motor is rotated regarding the HDD of data which can access from a host computer and a spindle motor is stopped regarding the HDD of data which are clearly judged that a host computer does not access the data. Whether the host computers can access the HDD or not is judged by the fact that whether the memory region (internal logical volume) provided by the HDD is in mapped to the host logical volume or not which is recognized by the host computer and is able to access thereby.