Patents by Inventor Kouichi Aihara

Kouichi Aihara 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 controller having virtual volume
    Patent number: 8332601
    Abstract: To shorten time necessary for performing backup of data in a virtual volume managed by a storage controller to a backup destination storage device. A secondary volume including storage areas of the same number as the number of first primary virtual areas is created with respect to a primary virtual volume (a virtual logical volume to be an I/O destination from an external device) including plural primary virtual areas. The first primary virtual areas are primary virtual areas to which actual areas are allocated. Data copy is performed from the primary virtual volume to the secondary volume. At the time of backup to the backup destination storage device, data backup is performed from the secondary volume to the backup destination storage device.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: December 11, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Miyuki Yasuda, Naoki Hino, Kouichi Aihara
  • Storage controller having virtual volume
    Publication number: 20100082924
    Abstract: To shorten time necessary for performing backup of data in a virtual volume managed by a storage controller to a backup destination storage device. A secondary volume including storage areas of the same number as the number of first primary virtual areas is created with respect to a primary virtual volume (a virtual logical volume to be an I/O destination from an external device) including plural primary virtual areas. The first primary virtual areas are primary virtual areas to which actual areas are allocated. Data copy is performed from the primary virtual volume to the secondary volume. At the time of backup to the backup destination storage device, data backup is performed from the secondary volume to the backup destination storage device.
    Type: Application
    Filed: November 25, 2008
    Publication date: April 1, 2010
    Inventors: Miyuki Yasuda, Naoki Hino, Kouichi Aihara