Patents by Inventor Kenji Oonabe

Kenji Oonabe 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 a method for diagnosing failure of the storage system
    Patent number: 7437615
    Abstract: A storage system includes at least one storage medium, at least one controller to control the storage medium, and a communication path to connect the storage medium and the controller in a loop for communication between the controller and the storage medium, wherein a failure diagnosis is performed to locate a failure while performing normal read/write operations.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: October 14, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Koji Iwamitsu, Kenji Oonabe
  • Disk array device and control method therefor
    Patent number: 7370147
    Abstract: A disk array device having a dual controller for executing data input/output processing for disk drives in response to a data input/output request from a host computer. Each controller constituting the dual controller has an FC controller which is interface-connected to the host computer via one path of a front interface connection FC and to the disk drives via one path of a back interface connection FC, and a PBC for switching the connection destination of the back interface connection FC between the two FC-ALs loop-connected to the disk drives.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: May 6, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Toshikatsu Nakamura, Kenji Oonabe
  • Disk array device and control method therefor
    Publication number: 20060236030
    Abstract: A disk array device having a dual controller for executing data input/output processing for disk drives in response to a data input/output request from a host computer. Each controller constituting the dual controller has an FC controller which is interface-connected to the host computer via one path of a front interface connection FC and to the disk drives via one path of a back interface connection FC, and a PBC for switching the connection destination of the back interface connection FC between the two FC-ALs loop-connected to the disk drives.
    Type: Application
    Filed: June 22, 2005
    Publication date: October 19, 2006
    Applicant: Hitachi, Ltd.
    Inventors: Toshikatsu Nakamura, Kenji Oonabe
  • Storage system and a method for diagnosing failure of the storage system
    Patent number: 7047450
    Abstract: A storage system includes at least one storage medium, at least one controller to control the storage medium, and a communication path to connect the storage medium and the controller in a loop for communication between the controller and the storage medium, wherein a failure diagnosis is performed to locate a failure while performing normal read/write operations.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: May 16, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Koji Iwamitsu, Kenji Oonabe
  • Storage system and a method for diagnosing failure of the storage system
    Publication number: 20050223266
    Abstract: A storage system includes at least one storage medium, at least one controller to control the storage medium, and a communication path to connect the storage medium and the controller in a loop for communication between the controller and the storage medium, wherein a failure diagnosis is performed to locate a failure while performing normal read/write operations.
    Type: Application
    Filed: May 17, 2005
    Publication date: October 6, 2005
    Inventors: Koji Iwamitsu, Kenji Oonabe
  • Storage system and a method for diagnosing failure of the storage system
    Publication number: 20050010843
    Abstract: A storage system includes at least one storage medium, at least one controller to control the storage medium, and a communication path to connect the storage medium and the controller in a loop for communication between the controller and the storage medium, wherein a failure diagnosis is performed to locate a failure while performing normal read/write operations.
    Type: Application
    Filed: September 10, 2003
    Publication date: January 13, 2005
    Inventors: Koji Iwamitsu, Kenji Oonabe