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:
Aug. 27, 2013
Filed:
Mar. 18, 2009
Koji Iwamitsu, Odawara, JP;
Yoshinori Ohira, Kawasaki, JP;
Katsuhiro Uchiumi, Fujisawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A storage control device includes a controller managing a plurality of first storage areas provided with a plurality of storage devices and a plurality of second storage areas in a particular first storage area of the plurality of first storage areas. Each of the plurality of first storage areas having a first fixed area size and each of the second plurality of storage areas having a second fixed area size which is smaller than the first fixed area size. The controller is adapted to allocate the particular first storage area to the virtual volume so that data of the write command are written to a particular second storage area of the plurality of second storage areas when a write command to a virtual volume of a plurality of virtual volumes is received.