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. 01, 2015
Filed:
May. 30, 2013
Hitachi, Ltd., Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
A storage system which is connected to a host computer, includes a storage device; a first controller which controls data transfers between the storage device and the host computer; a second controller connected to the first controller and controls data transfers between the storage device and the host computer; a non-volatile memory; and a battery device. The first controller includes a first volatile memory and the second controller comprising a second volatile memory. Upon a power outage, the battery device starts supplying electric power to the first controller and the second controller, and wherein the second controller copies data which is stored in the first volatile memory to the second volatile memory and, after copying is complete, stops operation of the first controller, stops the power supply from the battery device to the first controller, and copies data.