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:
Nov. 11, 2014
Filed:
Sep. 25, 2012
Hitachi, Ltd., Tokyo, JP;
Masaru Tsukada, Odawara, JP;
Shinichi Hiramatsu, Odawara, JP;
Yuya Goto, Odawara, JP;
Jun Miyashita, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A storage apparatusincludes a communication control processorthat is a processor configured to control communications with a host apparatus, and plurality of main processorseach configured to perform an I/O process on a storage driveaccording to an I/O request received from the host apparatus. The storage apparatusmanages data to be stored or that has been stored in the storage drivein accordance with the CKD format. The storage apparatusdistributes the I/O process to the plurality of main processorsin units of the data fields on basis of the operation rates of the respective main processors, information on a C field, a K field, and a D field that are data fields forming a record of data targeted by the I/O process and managed in CKD format, and an I/O load indicator being a load indicator of the I/O process currently running on each of the main processors.