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. 16, 2012
Filed:
Sep. 16, 2011
Manabu Kitamura, Kawasaki, JP;
Junji Ogawa, Sagamihara, JP;
Shunji Kawamura, Yokohama, JP;
Takao Sato, Odawara, JP;
Naoto Matsunami, Hayama, JP;
Shintaro Ito, Yokohama, JP;
Tomohiro Yoshihara, Kawasaki, JP;
Takuji Ogawa, Odawara, JP;
Manabu Kitamura, Kawasaki, JP;
Junji Ogawa, Sagamihara, JP;
Shunji Kawamura, Yokohama, JP;
Takao Sato, Odawara, JP;
Naoto Matsunami, Hayama, JP;
Shintaro Ito, Yokohama, JP;
Tomohiro Yoshihara, Kawasaki, JP;
Takuji Ogawa, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
One code (a compressed redundant code) is created based on a plurality of first redundant codes, each created on the basis of a plurality of data units, and this compressed redundant code is written to a nonvolatile storage area. This compressed redundant code is used to restore either a data element constituting a multiple-failure data, or a first redundant code corresponding to the multiple-failure data, which is stored in an unreadable sub-storage area of a partially failed storage device, and to restore the data element constituting the multiple-failure data which is stored in a sub-storage area of a completely failed storage device, based on the restored either data element or first redundant code, and either another data element constituting the multiple-failure data or the first redundant code corresponding to the multiple-failure data.