Patents by Inventor Ai Satoyama
Ai Satoyama 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).
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Publication number: 20240070035Abstract: 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: ApplicationFiled: March 10, 2023Publication date: February 29, 2024Applicant: Hitachi, Ltd.Inventors: Ai SATOYAMA, Akira Deguchi
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Patent number: 11841779Abstract: In the disaster recovery system exemplified by the information processing system, the cloud management node manages the importance information indicating the importance placed on the performance of each application to be executed by the primary site in correspondence with the virtual computer for executing the application, determines the DR method applied to the virtual computer and the application by selection from multiple types of DR methods based on the importance information of the corresponding application for each of the virtual computers, and determines a content of a predetermined set item applied to transfer of data to be used by the virtual computer.Type: GrantFiled: September 7, 2022Date of Patent: December 12, 2023Assignee: HITACHI, LTD.Inventors: Ai Satoyama, Akira Deguchi
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Publication number: 20230176952Abstract: In the disaster recovery system exemplified by the information processing system, the cloud management node manages the importance information indicating the importance placed on the performance of each application to be executed by the primary site in correspondence with the virtual computer for executing the application, determines the DR method applied to the virtual computer and the application by selection from multiple types of DR methods based on the importance information of the corresponding application for each of the virtual computers, and determines a content of a predetermined set item applied to transfer of data to be used by the virtual computer.Type: ApplicationFiled: September 7, 2022Publication date: June 8, 2023Applicant: Hitachi, Ltd.Inventors: Ai SATOYAMA, Akira DEGUCHI
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Patent number: 11308122Abstract: A first storage system of a remote copy system includes a data volume, a journal volume, and a storage controller. When an operation is received from a first server system, based on the operation, the storage controller executes any of a work of storing the update content by the operation in the journal volume or a work of executing the operation when the operation is received.Type: GrantFiled: March 2, 2020Date of Patent: April 19, 2022Assignee: HITACHI, LTD.Inventors: Ai Satoyama, Akira Deguchi
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Patent number: 11269550Abstract: A storage system includes a storage controller, plural volumes each configured by the storage controller, and a pool allocating physical storage areas to logical storage areas of the volumes. The storage controller configures a first group including, among the volumes, a first primary volume to which a first target protection period is set, and a first history information volume storing history information about updating to the first primary volume, and a second group including, thereamong, a second primary volume to which a second target protection period is set, and a second history information volume storing history information about updating to the second primary volume. The volumes included in the first and second groups utilize the same physical storage area of the pool. When increasing a free capacity thereof, history information to be purged is determined from the first and second protectable periods such that their protectable periods become the same.Type: GrantFiled: March 3, 2020Date of Patent: March 8, 2022Assignee: HITACHI, LTD.Inventors: Ai Satoyama, Tomohiro Kawaguchi, Takaki Matsushita
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Patent number: 11256586Abstract: A failure in a main site is recovered by operating in the same operational environment as a sub site. A remote copy system includes: a first storage system providing a main site; and a second storage system providing a sub site. A storage controller stores data and an operation processed in the main site as a main site journal, sends the main site journal to the sub site for sequential processing, stores data and an operation processed in the sub site as a sub site journal after a failover to the sub site is performed, and cancels an unreflected operation that is not processed in the sub site after being stored in the main site journal prior to the failover in the main site and sequentially processes the sub site journal in the main site, when a failback to the main site is performed.Type: GrantFiled: September 9, 2020Date of Patent: February 22, 2022Assignee: HITACHI, LTD.Inventors: Ai Satoyama, Akira Deguchi
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Patent number: 11221935Abstract: An object of the present invention is to provide a redundant information processing system that can continue its operation without stopping as much as possible. To achieve this, the information processing system includes multiple storage nodes including processors, memories, and storage devices, as well as a network for connecting the storage nodes. The processor of at least one storage node performs the steps of: obtaining the configuration information of the information processing system; obtaining first failure information related to a first failure occurred in the information processing system; calculating the availability level of the information processing system when a second failure further occurs, based on the configuration information and the first failure information; and controlling the operation of the system based on the availability level. Then, the processor outputs a notification.Type: GrantFiled: March 7, 2019Date of Patent: January 11, 2022Assignee: HITACHI, LTD.Inventors: Ai Satoyama, Tomohiro Kawaguchi
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Publication number: 20210334181Abstract: A failure in a main site is recovered by operating in the same operational environment as a sub site. A remote copy system includes: a first storage system providing a main site; and a second storage system providing a sub site. A storage controller stores data and an operation processed in the main site as a main site journal, sends the main site journal to the sub site for sequential processing, stores data and an operation processed in the sub site as a sub site journal after a failover to the sub site is performed, and cancels an unreflected operation that is not processed in the sub site after being stored in the main site journal prior to the failover in the main site and sequentially processes the sub site journal in the main site, when a failback to the main site is performed.Type: ApplicationFiled: September 9, 2020Publication date: October 28, 2021Applicant: HITACHI, LTD.Inventors: Ai SATOYAMA, Akira DEGUCHI
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Patent number: 11144202Abstract: A storage system which stores a plurality of volumes and performs an I/O process on the volume includes a processor. The volume includes a first volume and a second volume which is copied from the first volume by snapshot. In a case where a write request is received, the processor determines whether a volume of a copy source related to a target volume of the write request is a volume of which a storage region is a valid region where a data amount reduction process is applied. Depending on a case where the volume of the copy source is a volume of which the storage region is a valid region or a case where the volume of the copy source is a volume of which the storage region is not a valid region, the processor switches and performs a process of creating the second volume related to the snapshot.Type: GrantFiled: August 21, 2019Date of Patent: October 12, 2021Assignee: HITACHI, LTD.Inventors: Ai Satoyama, Tomohiro Kawaguchi, Takaki Matsushita
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Publication number: 20210294701Abstract: There is a need to backup data consistent with data in an online volume of local storage (a storage system provided by a person different from the one who provides the cloud-based storage system) in a hybrid cloud without degrading I/O performance of the online volume. The local storage generates a backup area where data written to the online volume is backed up. The local storage associates the backup area with a server system that provides access to cloud storage from the local storage. The local storage writes the data attached to a write request to the online volume and backs up the data in the backup area. The local storage transmits the data from the backup area to the server system to write the data to the cloud storage.Type: ApplicationFiled: September 11, 2020Publication date: September 23, 2021Inventors: Ai SATOYAMA, Tomohiro KAWAGUCHI
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Patent number: 11112971Abstract: A storage device includes one or more FMPKs including a FM chip capable of storing data and a storage controller that controls storing of write data of a predetermined write request for the FMPK. The FMPK includes a compression/decompression circuit that compresses data according to a second compression algorithm different from a first compression algorithm. The storage controller compresses data using the first compression algorithm, and determines whether the write data will be compressed using the storage controller or the compression/decompression circuit based on a predetermined condition. The write data is compressed by the determined storage controller or compression/decompression circuit and is stored in the FMPK.Type: GrantFiled: August 14, 2018Date of Patent: September 7, 2021Assignee: HITACHI, LTD.Inventors: Ai Satoyama, Tomohiro Kawaguchi, Yoshihiro Yoshii
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Publication number: 20210157523Abstract: A storage system capable of appropriately restoring a logical volume is provided. A storage system capable of restoring a logical volume, including: a data control section that exercises control to additionally write data at a past point in time in the logical volume to a storage section; and a data management section that manages metadata about the data additionally written to the storage section by the data control section, the metadata being data for associating position information about the data in the logical volume with position information about the data in the storage section, and the data management section copying metadata at a predetermined point in time of issuance of a restore operation for the logical volume to the logical volume, and returning the logical volume into a state at the predetermined point in time.Type: ApplicationFiled: February 26, 2020Publication date: May 27, 2021Applicant: HITACHI, LTD.Inventors: Takaki Matsushita, Tomohiro Kawaguchi, Ai Satoyama
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Publication number: 20210064638Abstract: A first storage system of a remote copy system includes a data volume, a journal volume, and a storage controller. When an operation is received from a first server system, based on the operation, the storage controller executes any of a work of storing the update content by the operation in the journal volume or a work of executing the operation when the operation is received.Type: ApplicationFiled: March 2, 2020Publication date: March 4, 2021Applicant: HITACHI, LTD.Inventors: Ai SATOYAMA, Akira DEGUCHI
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Publication number: 20200401348Abstract: A storage system includes a storage controller, plural volumes each configured by the storage controller, and a pool allocating physical storage areas to logical storage areas of the volumes. The storage controller configures a first group including, among the volumes, a first primary volume to which a first target protection period is set, and a first history information volume storing history information about updating to the first primary volume, and a second group including, thereamong, a second primary volume to which a second target protection period is set, and a second history information volume storing history information about updating to the second primary volume. The volumes included in the first and second groups utilize the same physical storage area of the pool. When increasing a free capacity thereof, history information to be purged is determined from the first and second protectable periods such that their protectable periods become the same.Type: ApplicationFiled: March 3, 2020Publication date: December 24, 2020Applicant: Hitachi, Ltd.Inventors: Ai Satoyama, Tomohiro Kawaguchi, Takaki Matsushita
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Patent number: 10846023Abstract: When a real area is allocated to a write destination virtual area in a virtual volume, a storage device determines whether or not a size of compressed new data is larger than a size of the allocated real area. In a case where the determination result is true, the storage device determines whether or not there is one or more real areas having a size equal to or larger than the size of the compressed new data and including a garbage area that is a real area serving as garbage. In a case where the determination result is true, the storage device selects one or more real areas including the garbage area, allocates, instead of the allocated real area, the selected one or more real areas to the write destination virtual area, and manages the allocated real area as a garbage area.Type: GrantFiled: June 20, 2017Date of Patent: November 24, 2020Assignee: HITACHI, LTD.Inventors: Ai Satoyama, Tomohiro Kawaguchi, Yoshihiro Yoshii
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Patent number: 10747624Abstract: In order to create, at another site, a backup of a volume at a specific time point while minimizing the response time required to update the volume, a first storage apparatus and a second storage apparatus transfer a journal in a first journal volume to the second storage apparatus, the second storage apparatus writes the transferred journal into a second journal volume, the second storage apparatus reads journals in the second journal volume in order of the update, the second storage apparatus reflects the read journals to a second data volume, the first storage apparatus creates, in the first journal volume, a journal including a marker when a specific condition is satisfied, and the second storage apparatus creates a snapshot of the second data volume upon detecting a marker in the read journal.Type: GrantFiled: October 14, 2015Date of Patent: August 18, 2020Assignee: HITACHI, LTD.Inventors: Ai Satoyama, Tomohiro Kawaguchi, Hiroshi Nasu
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Patent number: 10740250Abstract: A storage device allocates an address area of an address space to the first virtual address space in accordance with writing onto a first virtual address space. A controller manages an address area in the first virtual address space, in which address area a mapping to the real address space has been removed, as a usage prohibition area. When a use state of the first virtual address space reaches a predetermined criterion, the controller or the storage device adds new continuous address areas to the first virtual address space to expand the first virtual address space. The storage device allocates an area, in which a mapping to the first virtual address space has been removed, to the first virtual address space expanded.Type: GrantFiled: July 19, 2016Date of Patent: August 11, 2020Assignee: HITACHI, LTD.Inventors: Ai Satoyama, Tomohiro Kawaguchi, Nobumitsu Takaoka
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Publication number: 20200150866Abstract: A storage system which stores a plurality of volumes and performs an I/O process on the volume includes a processor. The volume includes a first volume and a second volume which is copied from the first volume by snapshot. In a case where a write request is received, the processor determines whether a volume of a copy source related to a target volume of the write request is a volume of which a storage region is a valid region where a data amount reduction process is applied. Depending on a case where the volume of the copy source is a volume of which the storage region is a valid region or a case where the volume of the copy source is a volume of which the storage region is not a valid region, the processor switches and performs a process of creating the second volume related to the snapshot.Type: ApplicationFiled: August 21, 2019Publication date: May 14, 2020Inventors: Ai SATOYAMA, Tomohiro KAWAGUCHI, Takaki MATSUSHITA
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Publication number: 20200042416Abstract: An object of the present invention is to provide a redundant information processing system that can continue its operation without stopping as much as possible. To achieve this, the information processing system includes multiple storage nodes including processors, memories, and storage devices, as well as a network for connecting the storage nodes. The processor of at least one storage node performs the steps of: obtaining the configuration information of the information processing system; obtaining first failure information related to a first failure occurred in the information processing system; calculating the availability level of the information processing system when a second failure further occurs, based on the configuration information and the first failure information; and controlling the operation of the system based on the availability level. Then, the processor outputs a notification.Type: ApplicationFiled: March 7, 2019Publication date: February 6, 2020Applicant: HITACHI, LTD.Inventors: Ai SATOYAMA, Tomohiro KAWAGUCHI
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Publication number: 20190243582Abstract: When a real area is allocated to a write destination virtual area in a virtual volume, a storage device determines whether or not a size of compressed new data is larger than a size of the allocated real area. In a case where the determination result is true, the storage device determines whether or not there is one or more real areas having a size equal to or larger than the size of the compressed new data and including a garbage area that is a real area serving as garbage. In a case where the determination result is true, the storage device selects one or more real areas including the garbage area, allocates, instead of the allocated real area, the selected one or more real areas to the write destination virtual area, and manages the allocated real area as a garbage area.Type: ApplicationFiled: June 20, 2017Publication date: August 8, 2019Applicant: HITACHI, LTD.Inventors: Ai SATOYAMA, Tomohiro KAWAGUCHI, Yoshihiro YOSHII