Patents by Inventor Yoshitaka Tokusho

Yoshitaka Tokusho 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).

  • Patent number: 9201779
    Abstract: A management system manages a computer system having multiple storage apparatuses, which provide a virtual volume to a host. The computer system includes a pool, and the storage apparatus allocates a physical page in the pool to a write destination when writing to the virtual volume. The management system stores logical volume management information for managing a corresponding relationship between a storage apparatus in which a logical volume resides and a physical page forming the logical volume, and virtual volume management information for managing the corresponding relationship between a virtual segment in a virtual volume and a page allocated to the virtual segment, and based on the logical volume management information and the virtual volume management information identifies a first page migration, which is affected in a case where either a determination-target storage apparatus is stopped or a first storage area is blocked, and displays the first page migration information.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: December 1, 2015
    Assignee: HITACHI, LTD.
    Inventors: Yoshitaka Tokusho, Yuuki Miyamoto
  • Patent number: 9086804
    Abstract: An object of the present invention is to efficiently use a hierarchical pool. A management server manages performance information of multiple host computers, and based on each performance information, determines whether a prescribed host computer, which comprises a load of equal to or larger than a preconfigured prescribed threshold, exists among the multiple host computers. The management server creates a reallocation plan, which stipulates an allocation amount of a real storage area for each of multiple storage tiers, with respect to a prescribed virtual logical volume used by the prescribed host computer. Based on the reallocation plan, the management server decides a corresponding relationship between each logical storage area and each real storage area of each storage tier, and notifies a storage apparatus of this corresponding relationship.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: July 21, 2015
    Assignee: HITACHI, LTD.
    Inventors: Naoki Isomura, Yoshitaka Tokusho, Takato Kusama
  • Publication number: 20140006740
    Abstract: A management system manages a computer system having multiple storage apparatuses, which provide a virtual volume to a host. The computer system includes a pool, and the storage apparatus allocates a physical page in the pool to a write destination when writing to the virtual volume. The management system stores logical volume management information for managing a corresponding relationship between a storage apparatus in which a logical volume resides and a physical page forming the logical volume, and virtual volume management information for managing the corresponding relationship between a virtual segment in a virtual volume and a page allocated to the virtual segment, and based on the logical volume management information and the virtual volume management information identifies a first page migration, which is affected in a case where either a determination-target storage apparatus is stopped or a first storage area is blocked, and displays the first page migration information.
    Type: Application
    Filed: June 27, 2012
    Publication date: January 2, 2014
    Applicant: HITACHI, LTD.
    Inventors: Yoshitaka Tokusho, Yuuki Miyamoto
  • Publication number: 20130179657
    Abstract: An object of the present invention is to efficiently use a hierarchical pool. A management server manages performance information of multiple host computers, and based on each performance information, determines whether a prescribed host computer, which comprises a load of equal to or larger than a preconfigured prescribed threshold, exists among the multiple host computers. The management server creates a reallocation plan, which stipulates an allocation amount of a real storage area for each of multiple storage tiers, with respect to a prescribed virtual logical volume used by the prescribed host computer. Based on the reallocation plan, the management server decides a corresponding relationship between each logical storage area and each real storage area of each storage tier, and notifies a storage apparatus of this corresponding relationship.
    Type: Application
    Filed: January 5, 2012
    Publication date: July 11, 2013
    Applicant: HITACHI, LTD.
    Inventors: Naoki Isomura, Yoshitaka Tokusho, Takato Kusama
  • Publication number: 20120159112
    Abstract: The present invention makes it possible for different types of application programs to efficiently use a virtual volume created on a basis of a hierarchized pool. A configuration management part P30 determines, based on access information, to which of storage tiers 211 actual areas 212 allocated to virtual volumes 220 should be allocated. The configuration management part comprises a determination part P3020 for determining a type of an application program that uses an actual area, and reallocation destination instruction parts P3021 and P3022 for determining reallocation destinations of the actual areas in accordance with the determination result, and instructing the storage apparatus as to these determinations.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 21, 2012
    Inventors: Yoshitaka Tokusho, Takato Kusama, Yuuki Miyamoto
  • Publication number: 20090300017
    Abstract: In a transaction parallel control method of a DBMS, if a priority of a transaction process accepted from an application is higher than a transaction process of an application being executed or suspended, a conflict is judged between database resources used by the both processes and a transaction process to be suspended or terminated is determined based on types and values of the database resources acquired by the respective processes. After the determined transaction process is suspended or terminated, the transaction process of the application is executed by acquiring a value corresponding to the type of the database resource included in the database resource acquisition schedule information accepted from the application and, after the completion, the suspended transaction is restarted.
    Type: Application
    Filed: April 24, 2009
    Publication date: December 3, 2009
    Applicant: Hitachi, Ltd.
    Inventors: Yoshitaka TOKUSHO, Yukio Nakano
  • Patent number: 7421447
    Abstract: Configuration adjustment processing receives database configuration information and parameter adjustment policy information from an application. When database configuration information received from another application exists in DBMS, the configuration adjustment processing reads in the database configuration information and makes adjustment of the inputted database configuration information and the existing database configuration information in accordance with the parameter adjustment policy information. The configuration adjustment processing updates the existing database configuration information on the basis of the adjusted database configuration information.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: September 2, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Yoshitaka Tokusho, Yukio Nakano
  • Publication number: 20060095462
    Abstract: Configuration adjustment processing receives database configuration information and parameter adjustment policy information from an application. When database configuration information received from another application exists in DBMS, the configuration adjustment processing reads in the database configuration information and makes adjustment of the inputted database configuration information and the existing database configuration information in accordance with the parameter adjustment policy information. The configuration adjustment processing updates the existing database configuration information on the basis of the adjusted database configuration information.
    Type: Application
    Filed: December 10, 2004
    Publication date: May 4, 2006
    Inventors: Yoshitaka Tokusho, Yukio Nakano
  • Publication number: 20040103079
    Abstract: An operations management method for performing an operations management of a database, which is used by at least one of an application and a middleware is proved. In the operations management method, operations management information including execution details information and execution timing information required for performing the operations management of the database are registered in a database from at least one of the application and the middleware. At a specified time to start operations management of the application, a database operations management execution processing judges an execution timing for executing the operations management according to contents of the operations management information. At the execution timing of the operations management, the database operations management execution processing starts operating management utilities of the database to execute the operations management of the database.
    Type: Application
    Filed: May 27, 2003
    Publication date: May 27, 2004
    Applicant: HITACHI, LTD.
    Inventors: Yoshitaka Tokusho, Morihiro Iwata, Kentaro Chigusa
  • Publication number: 20040083197
    Abstract: A database management system that performs a first internal database operational management according to instruction information concerning the first database operational management. When a second database operational management additionally is performed by the database management system according to instruction information given from outside concerning the second database operational management, the database management system extracts information that includes a time range scheduled for executing the second database operational management.
    Type: Application
    Filed: April 28, 2003
    Publication date: April 29, 2004
    Applicant: Hitachi, Ltd.
    Inventors: Morihiro Iwata, Yoshitaka Tokusho, Kentaro Chigusa