Patents by Inventor Kouji Iwamitsu
Kouji Iwamitsu 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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Patent number: 11734137Abstract: Virtual first logical volumes are provided to a host, a virtual second logical volume correlated with any one of the first logical volumes is created in a storage node in correlation with a storage control module disposed in the storage node, a correspondence relationship between the first and second logical volumes is managed as mapping information, a storage node which is an assigning distribution of an I/O request is specified on the basis of the mapping information in a case where the I/O request in which the first logical volume is designated as an I/O destination is given from the host, the I/O request is assigned to the storage control module of its own node in a case where the specified storage node is its own node, and the I/O request is assigned to another storage node in a case where the specified storage node is another storage node.Type: GrantFiled: January 13, 2022Date of Patent: August 22, 2023Assignee: Hitachi. Ltd.Inventors: Kouji Iwamitsu, Takuya Ogusu, Keisuke Suzuki, Masayuki Gomyo, Shinri Inoue
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Publication number: 20220283745Abstract: A storage system includes a plurality of storage nodes 4 each having one or more storage devices. The storage node includes a CPU. The CPU is configured to select a priority path to be notified as a usable path to a higher-level apparatus among paths which allows access of a predetermined logical unit to which a storage area of the storage device is provided from the higher-level apparatus. The CPU is configured to send the priority path as a reply to an inquiry about a path to the predetermined logical unit from the higher-level apparatus.Type: ApplicationFiled: May 24, 2022Publication date: September 8, 2022Inventors: Shinri INOUE, Kouji IWAMITSU, Takao TOTSUKA
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Patent number: 11372584Abstract: A storage system includes a plurality of storage nodes 4 each having one or more storage devices. The storage node includes a CPU. The CPU is configured to select a priority path to be notified as a usable path to a higher-level apparatus among paths which allows access of a predetermined logical unit to which a storage area of the storage device is provided from the higher-level apparatus. The CPU is configured to send the priority path as a reply to an inquiry about a path to the predetermined logical unit from the higher-level apparatus.Type: GrantFiled: March 17, 2020Date of Patent: June 28, 2022Assignee: HITACHI, LTD.Inventors: Shinri Inoue, Kouji Iwamitsu, Takao Totsuka
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Publication number: 20220138063Abstract: Virtual first logical volumes are provided to a host, a virtual second logical volume correlated with any one of the first logical volumes is created in a storage node in correlation with a storage control module disposed in the storage node, a correspondence relationship between the first and second logical volumes is managed as mapping information, a storage node which is an assigning distribution of an I/O request is specified on the basis of the mapping information in a case where the I/O request in which the first logical volume is designated as an I/O destination is given from the host, the I/O request is assigned to the storage control module of its own node in a case where the specified storage node is its own node, and the I/O request is assigned to another storage node in a case where the specified storage node is another storage node.Type: ApplicationFiled: January 13, 2022Publication date: May 5, 2022Inventors: Kouji Iwamitsu, Takuya Ogusu, Keisuke Suzuki, Masayuki Gomyo, Shinri Unoue
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Patent number: 11256582Abstract: Virtual first logical volumes are provided to a host, a virtual second logical volume correlated with any one of the first logical volumes is created in a storage node in correlation with a storage control module disposed in the storage node, a correspondence relationship between the first and second logical volumes is managed as mapping information, a storage node which is an assigning distribution of an I/O request is specified on the basis of the mapping information in a case where the I/O request in which the first logical volume is designated as an I/O destination is given from the host, the I/O request is assigned to the storage control module of its own node in a case where the specified storage node is its own node, and the I/O request is assigned to another storage node in a case where the specified storage node is another storage node.Type: GrantFiled: April 10, 2020Date of Patent: February 22, 2022Assignee: Hitachi, Ltd.Inventors: Kouji Iwamitsu, Takuya Ogusu, Keisuke Suzuki, Masayuki Gomyo, Shinri Inoue
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Publication number: 20210096771Abstract: A storage system includes a plurality of storage nodes 4 each having one or more storage devices. The storage node includes a CPU. The CPU is configured to select a priority path to be notified as a usable path to a higher-level apparatus among paths which allows access of a predetermined logical unit to which a storage area of the storage device is provided from the higher-level apparatus. The CPU is configured to send the priority path as a reply to an inquiry about a path to the predetermined logical unit from the higher-level apparatus.Type: ApplicationFiled: March 17, 2020Publication date: April 1, 2021Inventors: Shinri INOUE, Kouji IWAMITSU, Takao TOTSUKA
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Publication number: 20200241982Abstract: Virtual first logical volumes are provided to a host, a virtual second logical volume correlated with any one of the first logical volumes is created in a storage node in correlation with a storage control module disposed in the storage node, a correspondence relationship between the first and second logical volumes is managed as mapping information, a storage node which is an assigning distribution of an I/O request is specified on the basis of the mapping information in a case where the I/O request in which the first logical volume is designated as an I/O destination is given from the host, the I/O request is assigned to the storage control module of its own node in a case where the specified storage node is its own node, and the I/O request is assigned to another storage node in a case where the specified storage node is another storage node.Type: ApplicationFiled: April 10, 2020Publication date: July 30, 2020Inventors: Kouji IWAMITSU, Takuya OGUSU, Keisuke SUZUKI, Masayuki GOMYO, Shinri INOUE
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Patent number: 10698612Abstract: A storage control unit which processes an I/O request from a host apparatus is provided in the storage apparatus and the storage control unit creates a host group by mapping same to each supported OS type and configures a function according to the corresponding OS type for each of the host groups, creates a first volume on the storage apparatus and creates a second volume to which a physical storage area is dynamically allocated from a storage device, according to a volume creation instruction, and the storage control unit creates, according to an instruction to create a volume path from the first volume to the second volume, a volume path which passes through a third volume which is interposed between the first volume and second volume and has been allocated to the host group according to the OS type of the host apparatus provided by the first volume.Type: GrantFiled: March 15, 2019Date of Patent: June 30, 2020Assignee: Hitachi, Ltd.Inventors: Takuya Ogusu, Kouji Iwamitsu, Shinri Inoue
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Patent number: 10635551Abstract: Virtual first logical volumes are provided to a host, a virtual second logical volume correlated with any one of the first logical volumes is created in a storage node in correlation with a storage control module disposed in the storage node, a correspondence relationship between the first and second logical volumes is managed as mapping information, a storage node which is an assigning distribution of an I/O request is specified on the basis of the mapping information in a case where the I/O request in which the first logical volume is designated as an I/O destination is given from the host, the I/O request is assigned to the storage control module of its own node in a case where the specified storage node is its own node, and the I/O request is assigned to another storage node in a case where the specified storage node is another storage node.Type: GrantFiled: February 21, 2019Date of Patent: April 28, 2020Assignee: HITACHI, LTD.Inventors: Kouji Iwamitsu, Takuya Ogusu, Keisuke Suzuki, Masayuki Gomyo, Shinri Inoue
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Publication number: 20200042175Abstract: A storage control unit which processes an I/O request from a host apparatus is provided in the storage apparatus and the storage control unit creates a host group by mapping same to each supported OS type and configures a function according to the corresponding OS type for each of the host groups, creates a first volume on the storage apparatus and creates a second volume to which a physical storage area is dynamically allocated from a storage device, according to a volume creation instruction, and the storage control unit creates, according to an instruction to create a volume path from the first volume to the second volume, a volume path which passes through a third volume which is interposed between the first volume and second volume and has been allocated to the host group according to the OS type of the host apparatus provided by the first volume.Type: ApplicationFiled: March 15, 2019Publication date: February 6, 2020Inventors: Takuya OGUSU, Kouji Iwamitsu, Shinri Inoue
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Publication number: 20190188096Abstract: Virtual first logical volumes are provided to a host, a virtual second logical volume correlated with any one of the first logical volumes is created in a storage node in correlation with a storage control module disposed in the storage node, a correspondence relationship between the first and second logical volumes is managed as mapping information, a storage node which is an assigning distribution of an I/O request is specified on the basis of the mapping information in a case where the I/O request in which the first logical volume is designated as an I/O destination is given from the host, the I/O request is assigned to the storage control module of its own node in a case where the specified storage node is its own node, and the I/O request is assigned to another storage node in a case where the specified storage node is another storage node.Type: ApplicationFiled: February 21, 2019Publication date: June 20, 2019Inventors: Kouji IWAMITSU, Takuya OGUSU, Keisuke SUZUKI, Masayuki GOMYO, Shinri INOUE
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Patent number: 10229021Abstract: Virtual first logical volumes are provided to a host, a virtual second logical volume correlated with any one of the first logical volumes is created in a storage node in correlation with a storage control module disposed in the storage node, a correspondence relationship between the first and second logical volumes is managed as mapping information, a storage node which is an assigning distribution of an I/O request is specified on the basis of the mapping information in a case where the I/O request in which the first logical volume is designated as an I/O destination is given from the host, the I/O request is assigned to the storage control module of its own node in a case where the specified storage node is its own node, and the I/O request is assigned to another storage node in a case where the specified storage node is another storage node.Type: GrantFiled: March 9, 2018Date of Patent: March 12, 2019Assignee: HITACHI, LTD.Inventors: Kouji Iwamitsu, Takuya Ogusu, Keisuke Suzuki, Masayuki Gomyo, Shinri Inoue