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:
Mar. 13, 2012
Filed:
Mar. 08, 2007
Yusuke Hirakawa, Odawara, JP;
Hiroshi Arakawa, Sagamihara, JP;
Takahiko Takeda, Minamiashigara, JP;
Takao Sato, Odawara, JP;
Yusuke Hirakawa, Odawara, JP;
Hiroshi Arakawa, Sagamihara, JP;
Takahiko Takeda, Minamiashigara, JP;
Takao Sato, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A first storage system stores information relating to the updating of data stored in that system as a journal. More specifically, the journal is composed of a copy of data that was used for updating and update information such as a write command used during updating. Furthermore, the second storage system acquires the journal via a communication line between the first storage system and the second storage system. The second storage system holds a duplicate of the data held by the first storage system and updates the data corresponding to the data of the first storage system in the data update order of the first storage system by using the journal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile