Patents by Inventor Nobuhiro Iida

Nobuhiro Iida 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 APPARATUS AND DATA MANAGEMENT METHOD
    Publication number: 20150026402
    Abstract: A storage apparatus includes storage devices of a plurality of types of varying performance, and a control unit which manages each of storage areas provided by the storage devices of the plurality of types by means of storage tiers of a plurality of different types, and assigns the storage areas in page units to a virtual volume from any of the storage tiers among the storage tiers of the plurality of types. If the data I/O request is received from the host, the control unit assigns storage areas in page units from the uppermost storage tier to the target areas of the virtual volume corresponding to the I/O request. The control unit changes the page unit storage area assignment to predetermined areas of the virtual volume from an upper storage tier to a lower storage tier in accordance with the speed of processing of the data I/O request.
    Type: Application
    Filed: October 7, 2014
    Publication date: January 22, 2015
    Applicant: Hitachi, Ltd.
    Inventor: Nobuhiro IIDA
  • Storage apparatus and data management method
    Patent number: 8880804
    Abstract: A storage apparatus includes storage devices of a plurality of types of varying performance, and a control unit which manages each of storage areas provided by the storage devices of the plurality of types by means of storage tiers of a plurality of different types, and assigns the storage areas in page units to a virtual volume from any of the storage tiers among the storage tiers of the plurality of types. If the data I/O request is received from the host, the control unit assigns storage areas in page units from the uppermost storage tier to the target areas of the virtual volume corresponding to the I/O request The control unit changes the page unit storage area assignment to predetermined areas of the virtual volume from an upper storage tier to a lower storage tier in accordance with the speed of processing of the data I/O request.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: November 4, 2014
    Assignee: Hitachi, Ltd.
    Inventor: Nobuhiro Iida
  • Storage apparatus and control method of storage apparatus
    Patent number: 8738854
    Abstract: A start time of recovery processing performed during a fall-back operation of the RAID can be flexibly controlled.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: May 27, 2014
    Assignee: Hitachi, Ltd.
    Inventor: Nobuhiro Iida
  • STORAGE APPARATUS AND DATA MANAGEMENT METHOD
    Publication number: 20130254483
    Abstract: A storage apparatus comprises storage devices of a plurality of types of varying performance, and a control unit which manages each of storage areas provided by the storage devices of the plurality of types by means of storage tiers of a plurality of different types, and assigns the storage areas in page units to a virtual volume from any of the storage tiers among the storage tiers of the plurality of types, wherein, if the data I/O request is received from the host, the control unit assigns storage areas in page units from the uppermost storage tier to the target areas of the virtual volume corresponding to the I/O request, and wherein the control unit changes the page unit storage area assignment to predetermined areas of the virtual volume from an upper storage tier to a lower storage tier in accordance with the speed of processing of the data I/O request from the host.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 26, 2013
    Inventor: Nobuhiro Iida
  • STORAGE APPARATUS AND CONTROL METHOD OF STORAGE APPARATUS
    Publication number: 20120059990
    Abstract: A start time of recovery processing performed during a fall-back operation of the RAID can be flexibly controlled.
    Type: Application
    Filed: September 3, 2010
    Publication date: March 8, 2012
    Applicant: HITACHI, LTD.
    Inventor: Nobuhiro Iida