Patents by Inventor Kazuaki Shono

Kazuaki Shono has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Storage system and data management method
    Patent number: 7360046
    Abstract: On the first storage device side, when data is written in a first volume, a journal of such data is transmitted to a second storage device; on the second storage device side, a snapshot of a second volume and the respective journals are stored; on the second storage device side, the first volume is rebuilt at a rebuilding time according to a rebuilding order; on the second storage device side, data of an address rewritten from the rebuilding time onward is transmitted as difference data to the first storage device; and on the first storage device side, the first volume is rebuilt at the rebuilding time based on the difference data.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: April 15, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Kazuaki Shono, Yusuke Hirakawa, Katsuhiro Okumoto
  • Storage system and data management method
    Publication number: 20060242371
    Abstract: On the first storage device side, when data is written in a first volume, a journal of such data is transmitted to a second storage device; on the second storage device side, a snapshot of a second volume and the respective journals are stored; on the second storage device side, the first volume is rebuilt at a rebuilding time according to a rebuilding order; on the second storage device side, data of an address rewritten from the rebuilding time onward is transmitted as difference data to the first storage device; and on the first storage device side, the first volume is rebuilt at the rebuilding time based on the difference data.
    Type: Application
    Filed: June 20, 2005
    Publication date: October 26, 2006
    Applicant: Hitachi, Ltd.
    Inventors: Kazuaki Shono, Yusuke Hirakawa, Katsuhiro Okumoto