Patents by Inventor Ryoma Ishizaka

Ryoma Ishizaka 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).

  • Publication number: 20150378858
    Abstract: The present invention aims at providing a storage system capable of shortening the recovery time from failure while ensuring the reliability of data when failure occurs to a storage device. When failure occurs to a storage device, a recovery processing corresponding to the content of failure is executed for the blocked storage device. The storage device recovered via the execution of the recovery processing is subjected to a check corresponding to the operation status of the storage system or the failure history of the storage device.
    Type: Application
    Filed: February 28, 2013
    Publication date: December 31, 2015
    Applicant: HITACHI, LTD.
    Inventors: Ryoma ISHIZAKA, Tomohisa OGASAWARA, Yukiyoshi TAKAMURA, Yusuke MATSUMURA
  • Patent number: 8904107
    Abstract: A storage apparatus and program update method for reducing tediousness and complications of drive inventory management. A storage apparatus 10 includes a disk unit 400 composed of a plurality of first drives 420 storing first firmware of the same type, a controller 100 for controlling data during operation of the first firmware, a relay device 300, and a second drive 520. Then, the second drive 520 stores second firmware of the same type as that of the first firmware and third firmware of a type different from that of the first firmware. The controller 100 includes: a firmware comparison unit for comparing the first firmware with the second firmware; a firmware comparison unit for deciding firmware to operate on the storage apparatus 10 based on the comparison result; and a firmware update unit for updating the firmware operating on the first drive 420 or the second drive 520 with the decided firmware.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: December 2, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Yusuke Matsumura, Tomohisa Ogasawara, Yukiyoshi Takamura, Ryoma Ishizaka
  • Publication number: 20130246706
    Abstract: A storage apparatus and program update method for reducing tediousness and complications of drive inventory management. A storage apparatus 10 includes a disk unit 400 composed of a plurality of first drives 420 storing first firmware of the same type, a controller 100 for controlling data during operation of the first firmware, a relay device 300, and a second drive 520. Then, the second drive 520 stores second firmware of the same type as that of the first firmware and third firmware of a type different from that of the first firmware. The controller 100 includes: a firmware comparison unit for comparing the first firmware with the second firmware; a firmware comparison unit for deciding firmware to operate on the storage apparatus 10 based on the comparison result; and a firmware update unit for updating the firmware operating on the first drive 420 or the second drive 520 with the decided firmware.
    Type: Application
    Filed: March 14, 2012
    Publication date: September 19, 2013
    Inventors: Yusuke Matsumura, Tomohisa Ogasawara, Yukiyoshi Takamura, Ryoma Ishizaka