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. 09, 2012
Filed:
Aug. 13, 2008
Akira Yamamoto, Sagamihara, JP;
Yoshiaki Eguchi, Yokohama, JP;
Yasutomo Yamamoto, Sagamihara, JP;
Manabu Kitamura, Kawasaki, JP;
Ai Satoyama, Sagamihara, JP;
Akira Yamamoto, Sagamihara, JP;
Yoshiaki Eguchi, Yokohama, JP;
Yasutomo Yamamoto, Sagamihara, JP;
Manabu Kitamura, Kawasaki, JP;
Ai Satoyama, Sagamihara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
There is a journal area and one or more logical volumes comprising a first logical volume. The journal area is a storage area in which is stored a journal data element, which is a data element that is stored in any storage area of a plurality of storage areas configuring a logical volume, or a data element that is written to the storage area. A controller has a size receiver that receives a write unit size, which is the size of a write data element received from a computer, and a size setting unit that sets the received write unit size in a memory for one or more logical volumes. The size of a journal data element stored in a journal area based on the set write unit size is the write unit size.