Patents by Inventor Tatsuo Nishibori

Tatsuo Nishibori 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).

  • File server, file server control method, and storage system
    Patent number: 9369527
    Abstract: Disclosed is a storage system that includes a first node and a second node. The first node and the second node are connected to a client and a storage device. The first node includes a first memory for cache data, receives data from the client, stores the data into the first memory, and controls the storing the content of the data into the storage device from the first memory in accordance with an instruction from the second node. The second node includes a second memory for the same cache data as the first memory. If the content of data in the storage device or the content of data in the second memory before the storing of the data is the same as the content of the data in the second memory, the second node instructs the first node not to store the content of the data into the storage device.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: June 14, 2016
    Assignee: HITACHI, LTD.
    Inventors: Tatsuo Nishibori, Nobuyuki Saika, Akira Murotani
  • FILE SERVER, FILE SERVER CONTROL METHOD, AND STORAGE SYSTEM
    Publication number: 20160036912
    Abstract: Disclosed is a storage system that includes a first node and a second node. The first node and the second node are connected to a client and a storage device. The first node includes a first memory for cache data, receives data from the client, stores the data into the first memory, and controls the storing the content of the data into the storage device from the first memory in accordance with an instruction from the second node. The second node includes a second memory for the same cache data as the first memory. If the content of data in the storage device or the content of data in the second memory before the storing of the data is the same as the content of the data in the second memory, the second node instructs the first node not to store the content of the data into the storage device.
    Type: Application
    Filed: February 21, 2014
    Publication date: February 4, 2016
    Applicant: Hitachi, Ltd.
    Inventors: Tatsuo NISHIBORI, Nobuyuki SAIKA, Akira MUROTANI
  • System and method for establishing a copy pair relationship between source and destination volumes
    Patent number: 8219768
    Abstract: A replication system capable of automatically forming an authentic copy pair with a primary volume at a copy destination system without depending on an operator and realizing the pair formation without labeling a tape is provided.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: July 10, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuo Nishibori, Akira Murotani
  • BACKUP SYSTEM AND ITS CONTROL METHOD
    Publication number: 20110167234
    Abstract: A replication system capable of automatically forming an authentic copy pair with a primary volume at a copy destination system without depending on an operator and realizing the pair formation without labeling a tape is provided.
    Type: Application
    Filed: January 5, 2010
    Publication date: July 7, 2011
    Applicant: HITACHI, LTD.
    Inventors: Tatsuo Nishibori, Akira Murotani