Patents by Inventor Akira Deguchi

Akira Deguchi 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: 12135892
    Abstract: A processor of each node of a storage system executes rebalancing to transfer a volume between pool volumes for the node in such a way as to equalize throughput of a data input/output process and/or data capacities between the pool volumes making up the pool. When a plurality of external volumes are transferred to a node in the storage system, the storage management apparatus determines a transfer destination node for the volumes and order of transferring the volumes and executes volume transfer in such a way as to equalize throughput of the data input/output process and/or data capacities between the pool volumes making up the pool after completion of or during the volume transfer.
    Type: Grant
    Filed: September 13, 2022
    Date of Patent: November 5, 2024
    Assignee: Hitachi, Ltd.
    Inventors: Takanobu Suzuki, Tsukasa Shibayama, Akira Deguchi
  • Publication number: 20240361909
    Abstract: Provided is a computer system capable of maintaining a storage capacity allocated to a journal volume within an appropriate range during an application period of remote copy. A first storage system includes a primary volume and a primary journal volume, and a second storage system includes a secondary volume and a secondary journal volume. A management computer is configured to manage the remote copy in which a primary volume, a primary journal volume, a secondary journal volume, and a secondary volume are paired, and expand and/or release a capacity of the primary journal volume and/or the secondary journal volume according to operation information of a resource related to the remote copy.
    Type: Application
    Filed: August 30, 2023
    Publication date: October 31, 2024
    Applicant: Hitachi, Ltd.
    Inventors: Tsukasa SHIBAYAMA, Akira DeGuchi
  • 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: 12124726
    Abstract: A first storage system compresses data relating to read and write by a primary site and stores the data in a first physical volume. A second storage system compresses data relating to read and write by a secondary site and stores the data in a second physical volume. When performing replication for transferring the data stored in the first physical volume of the first storage system to the second storage system and storing the data in the second physical volume, the first storage system and the second storage system determine, based on a compression scheme executable by the first storage system and a compression scheme executable by the second storage system, a compression scheme to be applied to transfer target data and transfer the transfer target data compressed by the determined compression scheme.
    Type: Grant
    Filed: January 20, 2023
    Date of Patent: October 22, 2024
    Assignee: HITACHI, LTD.
    Inventors: Koji Hosogi, Akira Deguchi, Takaki Matsushita
  • Patent number: 12124336
    Abstract: In a storage system that acquires data from a storage system via a network, in the storage system, a snapshot 108 with respect to a predetermined volume is managed, the storage system includes a CPU, and the CPU is configured to receive an acquisition instruction of data of a first snapshot of the predetermined volume and acquire at least a part of data of a difference between the first snapshot and a second snapshot from the storage system when data of the second snapshot of the predetermined volume is acquired.
    Type: Grant
    Filed: March 13, 2023
    Date of Patent: October 22, 2024
    Assignee: HITACHI, LTD.
    Inventors: Akihiro Hara, Takahiro Yamamoto, Hideo Saito, Takanobu Suzuki, Akira Deguchi
  • Patent number: 12093142
    Abstract: In failover processing, a CPU restores data stored in a first volume to a second volume of a storage system, associates a unique ID of the first volume with the second volume, and stores the unique ID associated therewith in a memory. After the failover processing is completed, the CPU manages an update difference management bitmap indicating an updated content with respect to data stored in the second volume. The CPU transmits, in failback processing, update data updated after the failover processing among the data stored in the second volume to the first volume identified by the unique ID associated with the second volume based on the update difference management bitmap.
    Type: Grant
    Filed: March 9, 2023
    Date of Patent: September 17, 2024
    Assignee: HITACHI, LTD.
    Inventors: Masahiro Arai, Akira Deguchi, Hideyuki Koseki
  • Patent number: 12079497
    Abstract: To quickly and appropriately adjust a performance of a storage system. A storage configuration optimization device for managing a storage system including one or more storages implemented by a plurality of SDS nodes includes a virtual CPU. The virtual CPU is configured to receive a request for an execution period and a necessary performance of a project using the storage system, and select, based on consumption information and performance information of a resource of the storage system, one or more change patterns satisfying the request for the execution period and the necessary performance from among a plurality of change patterns indicating configuration changes of the storage system.
    Type: Grant
    Filed: September 12, 2022
    Date of Patent: September 3, 2024
    Assignee: HITACHI, LTD.
    Inventors: Miho Kobayashi, Akira Deguchi, Kazuki Togo, Tsukasa Shibayama, Takanobu Suzuki
  • Publication number: 20240256410
    Abstract: An information processing system includes storage apparatuses installed in areas, SDSs provided on a cloud, and a management system. The management system estimates, in reference to configuration information and performance information regarding a volume of each of the storage apparatuses, a required resource amount required to fail over the volume of each storage apparatus to a duplicate volume. The management system selects an SDS of a replication destination in such a manner as to minimize a required resource amount aggregated for each installation location and for each storage system SDS, while locating in a distributed manner, in the SDSs, duplicate volumes related to the storage apparatuses located at an identical point.
    Type: Application
    Filed: September 6, 2023
    Publication date: August 1, 2024
    Applicant: Hitachi, Ltd.
    Inventors: Kenta SATO, Tsukasa SHIBAYAMA, Akira DEGUCHI
  • Publication number: 20240231706
    Abstract: A first node performs copy (virtual copy) of address mapping between a virtual volume and a pool to a first virtual volume to create a third virtual volume in the first node. A second node performs mapping from a first pool volume in the second node to the third virtual volume in the first node, links an address of the first pool volume, which is mapped to the third virtual volume, to an address of a second virtual volume in the second node on a one-to-one basis, and performs log-structured write of the data in the second virtual volume to a second pool volume in the second node.
    Type: Application
    Filed: September 8, 2023
    Publication date: July 11, 2024
    Applicant: Hitachi, Ltd.
    Inventors: Takaki MATSUSHITA, Kazuki MATSUGAMI, Akira DEGUCHI, Norio SHIMOZONO, Shinichi HAYASHI
  • Patent number: 12019885
    Abstract: In an information processing system, a plurality of control units (control software) implemented in different storage nodes are managed as a redundancy group, one or more first logical units (SLUs) are associated with the redundancy group, and the plurality of control units included in the redundancy group include an active control unit that processes an input/output (IO) request with respect to the first logical unit, and a standby control unit that takes over the processing when the active control unit fails. A processor (configuration management unit) arranges at least one second logical unit (ALU) in the storage node in which the active control unit exists, and associates the second logical unit with the first logical unit controlled by the active control unit.
    Type: Grant
    Filed: September 15, 2022
    Date of Patent: June 25, 2024
    Assignee: Hitachi, Ltd.
    Inventors: Tsukasa Shibayama, Takanobu Suzuki, Akira Deguchi
  • Publication number: 20240192848
    Abstract: A management computer receives designation of an operation content and an operation target resource from a management user of a first type (managed or self). In a case where the operation target resource is a system resource managed by a management user of a second type (self or managed) and an operation according to the operation content for the operation target resource influences storage management by the management user of the second type, the management computer changes an authority of an operation regarding an influence for the management user of the second type to an authority not to influence an environment realized by construction including performing an operation according to the operation content for the operation target resource, and then performs the operation according to the operation content for the operation target resource.
    Type: Application
    Filed: September 1, 2023
    Publication date: June 13, 2024
    Applicant: Hitachi, Ltd.
    Inventors: Tsukasa SHIBAYAMA, Kenta SATO, Akira DEGUCHI
  • Patent number: 11977764
    Abstract: An administrative terminal receives designation of generation target data and of a generation destination storage device and identifies data similar to the target data. The terminal calculates a first predicted time expected for transmitting the target data from a storage device holding the target data to the generation destination storage device, and a second predicted time expected to be required for a second transmission process of transmitting the similar data from an object storage service to the generation destination storage device and of transmitting difference data between the target data and the similar data from the storage device holding the target data to the generation destination storage device. If the second predicted time is shorter than the first predicted time, the administrative terminal performs the second transmission process to transmit the similar data and the difference data to the generation destination storage device to generate the generation target data therein.
    Type: Grant
    Filed: September 15, 2022
    Date of Patent: May 7, 2024
    Assignee: HITACHI, LTD.
    Inventors: Hideyuki Koseki, Akira Deguchi, Masahiro Arai
  • 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
  • Publication number: 20240111638
    Abstract: In failover processing, a CPU restores data stored in a first volume to a second volume of a storage system, associates a unique ID of the first volume with the second volume, and stores the unique ID associated therewith in a memory. After the failover processing is completed, the CPU manages an update difference management bitmap indicating an updated content with respect to data stored in the second volume. The CPU transmits, in failback processing, update data updated after the failover processing among the data stored in the second volume to the first volume identified by the unique ID associated with the second volume based on the update difference management bitmap.
    Type: Application
    Filed: March 9, 2023
    Publication date: April 4, 2024
    Inventors: Masahiro ARAI, Akira DEGUCHI, Hideyuki KOSEKI
  • 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
  • Publication number: 20240070035
    Abstract: A primary site includes a volume #1 that stores data, and copies first backup data that is backup data of data corresponding to the volume #1 to a secondary site. In the failover process of handing over the execution of a transaction process from the primary site to the secondary site, a cloud management node restores the volume #1 to a storage system as a volume #2 based on the first backup data copied to the secondary site. The cloud management node manages the first backup data, as second backup data, that is backup data of data corresponding to the volume #2.
    Type: Application
    Filed: March 10, 2023
    Publication date: February 29, 2024
    Applicant: Hitachi, Ltd.
    Inventors: Ai SATOYAMA, Akira Deguchi
  • Publication number: 20240045766
    Abstract: In a storage system that acquires data from a storage system via a network, in the storage system, a snapshot 108 with respect to a predetermined volume is managed, the storage system includes a CPU, and the CPU is configured to receive an acquisition instruction of data of a first snapshot of the predetermined volume and acquire at least a part of data of a difference between the first snapshot and a second snapshot from the storage system when data of the second snapshot of the predetermined volume is acquired.
    Type: Application
    Filed: March 13, 2023
    Publication date: February 8, 2024
    Inventors: Akihiro HARA, Takahiro YAMAMOTO, Hideo SAITO, Takanobu SUZUKI, Akira DEGUCHI
  • Publication number: 20240036989
    Abstract: A management server stops a sub-server in advance and prepares a sub-storage that operates in response to a request from the sub-server at the time of transition at which a business process of using data stored in a regular storage is performed in the sub-server. The management server recovers data using recovery data stored in an object storage and stores the data in the sub-storage and starts the sub-server.
    Type: Application
    Filed: March 1, 2023
    Publication date: February 1, 2024
    Inventors: Akira DEGUCHI, Masahiro ARAI, Hideyuki KOSEKI
  • Publication number: 20240020206
    Abstract: In a storage system that is connected via networks to a cloud system, which provides an object store, and backs up backup data of a predetermined volume as an object to the object store, the storage system includes a processor, and the processor is configured to determine whether the storage system stores a snapshot associated with a volume at a first point in time to be restored, and restore the volume at the first point in time using the snapshot when it is determined that the storage system stores the snapshot.
    Type: Application
    Filed: March 1, 2023
    Publication date: January 18, 2024
    Inventors: Masahiro ARAI, Akira DEGUCHI, Hideyuki KOSEKI
  • Patent number: 11855778
    Abstract: A network interface for a storage controller includes a processor and a memory that stores an instruction code to be executed by the processor. The processor executes protocol processing for transmitting and receiving packets via a network. The processor reproduces a first packet not received from the network, from a plurality of other received packets included in an error correction packet group same as that of the first packet.
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: December 26, 2023
    Assignee: HITACHI, LTD.
    Inventors: Nobuhiro Yokoi, Hiroka Ihara, Akira Deguchi