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:
Dec. 29, 2009
Filed:
Nov. 29, 2006
Masanori Hori, Odawara, JP;
Masahiko Sato, Odawara, JP;
Akihito Yamanashi, Oyama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The storage control device of the present invention reduces power consumption by stopping the flow of power to enclosures that are not being accessed. A plurality of additional enclosures are connected to a base enclosure by means of a daisy-chain connection. The respective additional enclosures are divided into three levels, namely a low usage frequency level, a medium usage frequency level, and a high usage frequency level depending on the connection distance of the additional enclosures from the base enclosure. Drives that have not been accessed for a predetermined time are spun down. When all the drives in the enclosure are in the spin down state, the supply of power from the power supply to the respective drives is stopped. Further, when the flow of power to an additional enclosure located below the enclosure itself has stopped, the switch of the latter enclosure is turned OFF and the flow of power to the additional enclosure is stopped.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile