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. 21, 2015
Filed:
Aug. 15, 2012
Chikashi Maeda, Kawasaki, JP;
Hidejirou Daikokuya, Kawasaki, JP;
Kazuhiko Ikeuchi, Kawasaki, JP;
Takeshi Watanabe, Kawasaki, JP;
Chikashi Maeda, Kawasaki, JP;
Hidejirou Daikokuya, Kawasaki, JP;
Kazuhiko Ikeuchi, Kawasaki, JP;
Takeshi Watanabe, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A rebuild control unit splits a rebuild process into partial processes and instructs an access processing unit to execute the partial processes. In the rebuild process, data identical to data recorded in a first storage device that constitutes RLU #1 is generated based on data read from, among storage devices constituting RLU #1, storage devices other than the first storage device and written to a spare storage device included in a storage system. Each partial process includes a combination of an operation of reading data from a split range created by splitting a data readout target range into fixed-size intervals and an operation of writing data in another storage device based on the data read from the split range. In response to the instruction from the rebuild control unit to execute the multiple partial processes, the access processing unit executes the instructed partial processes in parallel.