Patents by Inventor Naoki Haramai

Naoki Haramai 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).

  • Method of managing paths for an externally-connected storage system and method of detecting a fault site
    Patent number: 7836350
    Abstract: Provided is a method of controlling a computer system that includes: a computer; a first storage device connected to the computer via a first path and a second path; and a second storage device externally-connected to the first storage system via a third path and connected to the computer via a fourth path, the first storage device providing a first storage area to the computer, the second storage device including a second storage area corresponding to the first storage area, the method including: judging whether or not a fault has occurred in at least one of the first to fourth paths; selecting, a path used for access to the first or second storage area; and transmitting the access request for the first or second storage area by using the selected path. Accordingly, in the computer system, an application can be prevented from being stopped despite a fault in a path.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: November 16, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Naoki Haramai, Hiroshi Yokouchi, Ryu Gemba, Atsushi Kondo, Kazuhiro Oyama
  • Method of managing paths for an externally-connected storage system and method of detecting a fault site
    Publication number: 20090265577
    Abstract: Provided is a method of controlling a computer system that includes: a computer; a first storage device connected to the computer via a first path and a second path; and a second storage device externally-connected to the first storage system via a third path and connected to the computer via a fourth path, the first storage device providing a first storage area to the computer, the second storage device including a second storage area corresponding to the first storage area, the method including: judging whether or not a fault has occurred in at least one of the first to fourth paths; selecting, a path used for access to the first or second storage area; and transmitting the access request for the first or second storage area by using the selected path. Accordingly, in the computer system, an application can be prevented from being stopped despite a fault in a path.
    Type: Application
    Filed: June 23, 2008
    Publication date: October 22, 2009
    Inventors: Naoki Haramai, Hiroshi Yokouchi, Ryu Gemba, Atsushi Kondo, Kazuhiro Oyama