Patents by Inventor Kazuei HIRONAKA

Kazuei HIRONAKA 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: 12222957
    Abstract: To back up stored data of a storage device installed on-premise to a storage service provided by a public cloud more reliably and efficiently. A storage system according to the invention includes a storage device having first storage logical volumes (LDEVs), and a storage device having second storage LDEVs. When stored data of a first LDEV and stored data of a second LDEV are synchronized with each other, network conditions in a transfer path from the storage device to the public cloud and in a transfer path from the storage device to the public cloud are observed. The first LDEV or the second LDEV is selected as a backup source based on the network conditions.
    Type: Grant
    Filed: September 8, 2023
    Date of Patent: February 11, 2025
    Assignee: Hitachi Vantara, Ltd.
    Inventors: Kazuei Hironaka, Masahiro Arai, Akira Deguchi
  • Publication number: 20250021246
    Abstract: When executing a data transfer process between one volume and a second storage unit, a computer resource activation unit activates one or more computer resources that executes the data transfer process, and mounts one common volume as a transfer source or a transfer destination in the data transfer process on any of the activated computer resources. A region allocation unit allocates a part of the data transfer process to the computer resource for each storage region. The computer resource executes the part of the data transfer process between the second storage unit and the storage region allocated to the computer resource in the one common volume.
    Type: Application
    Filed: March 8, 2024
    Publication date: January 16, 2025
    Applicant: Hitachi, Ltd.
    Inventors: Masahiro ARAI, Akira Deguchi, Kazuei Hironaka
  • Publication number: 20240354312
    Abstract: To back up stored data of a storage device installed on-premise to a storage service provided by a public cloud more reliably and efficiently. A storage system according to the invention includes a storage device having first storage logical volumes (LDEVs), and a storage device having second storage LDEVs. When stored data of a first LDEV and stored data of a second LDEV are synchronized with each other, network conditions in a transfer path from the storage device to the public cloud and in a transfer path from the storage device to the public cloud are observed. The first LDEV or the second LDEV is selected as a backup source based on the network conditions.
    Type: Application
    Filed: September 8, 2023
    Publication date: October 24, 2024
    Applicant: Hitachi, Ltd.
    Inventors: Kazuei HIRONAKA, Masahiro ARAI, Akira DEGUCHI
  • Patent number: 12026391
    Abstract: A copy control device for controlling a data copy between a plurality of cloud systems each including one or a plurality of storage devices collects predetermined information for determining data duplication between storage devices, accepts a copy process request for a data copy from a storage device in a copy source cloud system to a copy destination storage device in a different cloud system, determines duplication between copy target data designated in the copy process request and data in the different cloud system on the basis of the collected predetermined information, instructs the different cloud system to copy duplicate data from the storage device having the duplicate data to the copy destination storage device, and instructs the copy source cloud system to copy remaining data of the copy target data to the copy destination storage device.
    Type: Grant
    Filed: September 8, 2022
    Date of Patent: July 2, 2024
    Assignee: Hitachi, Ltd.
    Inventors: Kazuei Hironaka, Kenta Sato
  • Publication number: 20240126880
    Abstract: A storage device receives an access request specifying one of one or more LDEVs (one or more logical volumes provided to one or more hosts) from one host. In response to the access request, the storage device accesses a page allocated to an access destination area of the LDEV among a plurality of pages (plurality of logical storage areas that can be allocated to one or more LDEVs). The storage device or a storage device management system identifies, based on management information including information representing a write status characteristic for each of the plurality of pages, a mark target page as a low-write frequency page where a certain number or more of writes have occurred during a certain period of time and checks the presence or absence of a ransomware attack possibility that the number of the mark target pages is equal to or greater than a threshold.
    Type: Application
    Filed: March 10, 2023
    Publication date: April 18, 2024
    Inventors: Kazuei HIRONAKA, Akira DEGUCHI
  • Patent number: 11941284
    Abstract: It is possible to reduce analysis cost of a management system. The management system includes a CPU and manages one or more storage devices that provide, to a higher-level device, one or more volumes for inputting and outputting data. The CPU is configured to collect performance information of the volume from the storage device at a predetermined first time interval and detect a QoS violation of the performance information of the volume at a second time interval longer than the first time interval.
    Type: Grant
    Filed: March 11, 2022
    Date of Patent: March 26, 2024
    Assignee: HITACHI, LTD.
    Inventors: Soichi Watanabe, Akira Deguchi, Kazuei Hironaka
  • Patent number: 11928524
    Abstract: The computer system includes one or more storage devices and a management computer, the management computer includes an information collection unit, an event detection unit, a plan generation unit, and a plan execution unit. The plan generation unit determines a target volume of a change process of a right of control in a plan, a processor of a change source of the right of control, and a processor of a change destination of the right of control, estimates an influence by a change process of the right of control in the plan, and the plan execution unit determines execution time of the plan based on the estimation of the influence and the operation information of the storage devices. As a result, in consideration of the influence by an ownership change process, while the influence applied to usage of a computer system is suppressed, the ownership change process is executed.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: March 12, 2024
    Assignee: Hitachi, Ltd.
    Inventors: Tsukasa Shibayama, Kazuei Hironaka, Kenta Sato
  • Patent number: 11822787
    Abstract: The present invention is directed to realize a QoS function in the unit of a virtual volume group existing over a plurality of storage apparatuses. A management system of a storage system forms a virtual volume group by using a plurality of volumes provided by a plurality of storage apparatuses. In the virtual volume group, a QoS setting value including a data input/output amount is set. IO processing ability provided from each of the volumes to the virtual volume group is set so as to satisfy the QoS setting value. The management system sets the IC processing ability provided from each of the volumes to the virtual volume group on the basis of operation information of each of the volumes.
    Type: Grant
    Filed: March 11, 2022
    Date of Patent: November 21, 2023
    Assignee: Hitachi, Ltd.
    Inventors: Kenta Sato, Kazuei Hironaka, Takanobu Suzuki, Akira Deguchi
  • Publication number: 20230305728
    Abstract: A processor repeatedly collects integrated management information related to a storage apparatus and including performance data indicating an operation status of the storage apparatus that stores data, and stores the performance data in an performance data temporary storage area. In addition, the processor analyzes the integrated management information, and determines the importance level indicating the degree of the influence of the performance data stored in the performance data temporary storage area on the analysis process of analyzing the performance data. The processor migrates the performance data stored in the performance data temporary storage area to one of the plurality of long-term storage areas having different characteristics based on the importance level.
    Type: Application
    Filed: March 9, 2023
    Publication date: September 28, 2023
    Applicant: Hitachi, Ltd.
    Inventors: Kenta SATO, Kazuei HIRONAKA, Akira DEGUCHI
  • Publication number: 20230273740
    Abstract: A copy control device for controlling a data copy between a plurality of cloud systems each including one or a plurality of storage devices collects predetermined information for determining data duplication between storage devices, accepts a copy process request for a data copy from a storage device in a copy source cloud system to a copy destination storage device in a different cloud system, determines duplication between copy target data designated in the copy process request and data in the different cloud system on the basis of the collected predetermined information, instructs the different cloud system to copy duplicate data from the storage device having the duplicate data to the copy destination storage device, and instructs the copy source cloud system to copy remaining data of the copy target data to the copy destination storage device.
    Type: Application
    Filed: September 8, 2022
    Publication date: August 31, 2023
    Applicant: Hitachi, Ltd.
    Inventors: Kazuei HIRONAKA, Kenta SATO
  • Publication number: 20230063179
    Abstract: The present invention is directed to realize a QoS function in the unit of a virtual volume group existing over a plurality of storage apparatuses. A management system of a storage system forms a virtual volume group by using a plurality of volumes provided by a plurality of storage apparatuses. In the virtual volume group, a QoS setting value including a data input/output amount is set. IO processing ability provided from each of the volumes to the virtual volume group is set so as to satisfy the QoS setting value. The management system sets the IC processing ability provided from each of the volumes to the virtual volume group on the basis of operation information of each of the volumes.
    Type: Application
    Filed: March 11, 2022
    Publication date: March 2, 2023
    Inventors: Kenta SATO, Kazuei HIRONAKA, Takanobu SUZUKI, Akira DEGUCHI
  • Patent number: 11586516
    Abstract: An object of the present invention is to realize a proper storage operation in accordance with the state of a storage devices which constructed remote copy pair via a network. A first storage device for providing a first volume and a second storage device for providing a second volume as a remote copy destination of the first volume, includes: a storing unit for policy sets that is a regulation group relating to the service quality of the second volume; and a policy selection unit for selecting a policy set to be used from the plurality of policy sets in accordance with the states of the first volume and the second storage device. According to such a configuration and operation, it is possible to properly operate the storage device by selecting a policy set before and after the failover or according to the presence or absence of degeneration.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: February 21, 2023
    Assignee: HITACHI, LTD.
    Inventors: Kazuei Hironaka, Akira Deguchi, Tsukasa Shibayama
  • Publication number: 20230022502
    Abstract: It is possible to reduce analysis cost of a management system. The management system includes a CPU and manages one or more storage devices that provide, to a higher-level device, one or more volumes for inputting and outputting data. The CPU is configured to collect performance information of the volume from the storage device at a predetermined first time interval and detect a QoS violation of the performance information of the volume at a second time interval longer than the first time interval.
    Type: Application
    Filed: March 11, 2022
    Publication date: January 26, 2023
    Inventors: Soichi WATANABE, Akira DEGUCHI, Kazuei HIRONAKA
  • Patent number: 11507325
    Abstract: A storage apparatus includes a processor and a memory. The processor provides a plurality of logical volumes each allowing input and output of data, and processes each data input to and output from a storage device via the logical volume. The processor acquires operational data associated with each of the plurality of logical volumes, and transmits the acquired operational data to a source of a operational data request. The processor adjusts, for each of the logical volumes, accuracy of the operational data to be acquired from each of the logical volumes, according to a status of each of the logical volumes.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: November 22, 2022
    Assignee: Hitachi, Ltd.
    Inventors: Kenta Sato, Kazuei Hironaka, Akira Deguchi
  • Publication number: 20220261323
    Abstract: An object of the present invention is to realize a proper storage operation in accordance with the state of a storage devices which constructed remote copy pair via a network. A first storage device for providing a first volume and a second storage device for providing a second volume as a remote copy destination of the first volume, includes: a storing unit for policy sets that is a regulation group relating to the service quality of the second volume; and a policy selection unit for selecting a policy set to be used from the plurality of policy sets in accordance with the states of the first volume and the second storage device. According to such a configuration and operation, it is possible to properly operate the storage device by selecting a policy set before and after the failover or according to the presence or absence of degeneration.
    Type: Application
    Filed: September 10, 2021
    Publication date: August 18, 2022
    Inventors: Kazuei HIRONAKA, Akira DEGUCHI, Tsukasa SHIBAYAMA
  • Patent number: 11416157
    Abstract: A storage device is connected to a migration source storage device that stores migration target data via a data line. A transportable external mass storage device that stores the migration target data migrated from the migration source storage device is connected to the storage device. The storage device references logical configuration information received from the migration source storage device via the data line and restores and stores the migration target data stored in the external mass storage device.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: August 16, 2022
    Assignee: HITACHI, LTD.
    Inventors: Kazuei Hironaka, Akira Deguchi
  • Publication number: 20220114034
    Abstract: The computer system includes one or more storage devices and a management computer, the management computer includes an information collection unit, an event detection unit, a plan generation unit, and a plan execution unit. The plan generation unit determines a target volume of a change process of a right of control in a plan, a processor of a change source of the right of control, and a processor of a change destination of the right of control, estimates an influence by a change process of the right of control in the plan, and the plan execution unit determines execution time of the plan based on the estimation of the influence and the operation information of the storage devices. As a result, in consideration of the influence by an ownership change process, while the influence applied to usage of a computer system is suppressed, the ownership change process is executed.
    Type: Application
    Filed: February 26, 2021
    Publication date: April 14, 2022
    Applicant: Hitachi, Ltd.
    Inventors: Tsukasa Shibayama, Kazuei Hironaka, Kenta Sato
  • Patent number: 11294751
    Abstract: Dump data of a memory is allowed to be easily and appropriately managed. In a storage apparatus including a CPU, a DRAM, and a drive, the CPU executes storage processing to store data of the DRAM to be stored into the drive as dump data upon a failure occurrence in the storage apparatus. The CPU deduplicates the dump data in the storage processing or after storing the dump data into the drive. The CPU may execute deduplication processing between the dump data and other dump data stored in the drive or may execute deduplication processing within the data to be stored.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: April 5, 2022
    Assignee: HITACHI, LTD.
    Inventors: Kazuki Togo, Kazuei Hironaka, Akira Deguchi
  • Publication number: 20220091790
    Abstract: A storage apparatus includes a processor and a memory. The processor provides a plurality of logical volumes each allowing input and output of data, and processes each data input to and output from a storage device via the logical volume. The processor acquires operational data associated with each of the plurality of logical volumes, and transmits the acquired operational data to a source of a operational data request. The processor adjusts, for each of the logical volumes, accuracy of the operational data to be acquired from each of the logical volumes, according to a status of each of the logical volumes.
    Type: Application
    Filed: March 2, 2021
    Publication date: March 24, 2022
    Applicant: HITACHI, LTD.
    Inventors: Kenta SATO, Kazuei HIRONAKA, Akira DEGUCHI
  • Patent number: 11216317
    Abstract: The computer system includes one or more storage devices and a management computer, the management computer includes an information collection unit, an event detection unit, a plan generation unit, and a plan execution unit. The plan generation unit determines a target volume of a change process of a right of control in a plan, a processor of a change source of the right of control, and a processor of a change destination of the right of control, estimates an influence by a change process of the right of control in the plan, and the plan execution unit determines execution time of the plan based on the estimation of the influence and the operation information of the storage devices. As a result, in consideration of the influence by an ownership change process, while the influence applied to usage of a computer system is suppressed, the ownership change process is executed.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: January 4, 2022
    Assignee: Hitachi, Ltd.
    Inventors: Tsukasa Shibayama, Kazuei Hironaka, Kenta Sato