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公开(公告)号：US11615005B2
公开(公告)日：2023-03-28
申请号：US17478109
申请日：2021-09-17
Applicant: Hitachi, Ltd.
Inventor： Shintaro Ito , Takahiro Yamamoto , Sachie Tajima , Masakuni Agetsuma
Abstract: Each redundancy group is constituted by one active program (storage control software of the active program) and N standby programs (N is an integer of two or more). Each of the N standby programs is associated with a priority to be determined as a failover (FO) destination. In the same redundancy group, FO is performed from the active program to the standby program based on the priority. For the plurality of pieces of storage control software including the active programs and the standby programs that change to be active by FO in the plurality of redundancy groups arranged in the same node, standby storage control software that can set each of the programs as a FO destination are arranged in different nodes.
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公开(公告)号：US11593182B2
公开(公告)日：2023-02-28
申请号：US17471255
申请日：2021-09-10
Applicant: Hitachi, Ltd.
Inventor： Takahiro Yamamoto , Yuki Sakashita , Shintaro Ito , Masakuni Agetsuma
Abstract: A storage system including a processor performs a process for providing a volume including a plurality of areas to one or more hosts. One or more storage devices are connected to the processor and store data of the volume, in which each of a plurality of nodes monitors a load of the volume provided by an own node and loads of areas obtained by dividing an area of the volume into a plurality of the areas, and a first node determining that the load of the one volume being monitored is equal to or more than a threshold value migrates a portion of the area included in the one volume to a volume of a second node different from the first node according to the load of the areas obtained by dividing the area of the one volume into the plurality of areas and a policy of load sharing.
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公开(公告)号：US20230021806A1
公开(公告)日：2023-01-26
申请号：US17692355
申请日：2022-03-11
Applicant: Hitachi, Ltd.
Inventor： Yuki Sakashita , Takahiro Yamamoto , Shintaro Ito , Masakuni Agetsuma
IPC: G06F9/50
Abstract: In a distributed storage system that has a plurality of computer nodes having processors and a storage drive and that provides a volume, each of the plurality of computer nodes provides a sub-volume, the processor of the computer node manages settings of each sub-volume of the computer node, the volume can be configured by using a plurality of sub-volumes provided by the plurality of computer nodes, and the sub-volumes include a plurality of logical storage areas formed by being allocated with physical storage areas of the storage drive. The plurality of computer nodes move the logical storage areas between the sub-volumes that belong to the same volume and that are provided by different computer nodes.
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公开(公告)号：US11550488B2
公开(公告)日：2023-01-10
申请号：US17187071
申请日：2021-02-26
Applicant: Hitachi, Ltd.
Inventor： Hiroto Ebara , Yoshinori Ohira , Takaki Nakamura , Masakuni Agetsuma
Abstract: Each server stores metadata for managing a volume having a logical block mapped to physical blocks of storage devices, and provides a compute host with the volume according to the metadata. A computer system calculates the metadata amount, which is the data amount of the metadata of the volume, for each volume, determines a migration target volume from the volumes based on each metadata amount, and performs volume migration that transfers the computer node that provides the compute host with the migration target volume to a migration destination computer node.
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公开(公告)号：US11481292B2
公开(公告)日：2022-10-25
申请号：US17198390
申请日：2021-03-11
Applicant: Hitachi, Ltd.
Inventor： Shintaro Ito , Takahiro Yamamoto , Sachie Tajima , Masakuni Agetsuma
Abstract: Each redundancy group is constituted by one active program (storage control software of the active program) and N standby programs (N is an integer of two or more). Each of the N standby programs is associated with a priority to be determined as a failover (FO) destination. In the same redundancy group, FO is performed from the active program to the standby program based on the priority. For the plurality of pieces of storage control software including the active programs and the standby programs that change to be active by FO in the plurality of redundancy groups arranged in the same node, standby storage control software that can set each of the programs as a FO destination are arranged in different nodes.
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Patent Agency Ranking
公开(公告)号：US20220255940A1
公开(公告)日：2022-08-11
申请号：US17470067
申请日：2021-09-09
Applicant: Hitachi, Ltd.
Inventor： Toshiyuki Aritsuka , Masakuni Agetsuma , Takahiro Yamamoto , Tatsuya Hirai
Abstract: A system that controls access to a resource by a user stores policy information for determining a condition with respect to an operation of the resource. The system acquires a first access request that shows a predetermined operation to a first resource by the user from a user terminal. The system acquires user state information that shows a current state of the user from the user terminal. The system determines a condition in case of access by the user based on the user state information. The system determines whether to authorize the first access request based on the policy information and the condition in case of access.
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公开(公告)号：US20220188190A1
公开(公告)日：2022-06-16
申请号：US17470224
申请日：2021-09-09
Applicant: Hitachi, Ltd.
Inventor： Takaki Nakamura , Masakuni Agetsuma , Takahiro Yamamoto
Abstract: According to one embodiment, provided is a storage management system having a processor and managing a plurality of storages, in which the storage has a plurality of types of components, and performs redundantization of a data to be stored by combining the plurality of components, the storage management system has component management information indicating redundancy set for the component itself, and the processor sets a method of data protection of the storage based on the component management information and a request for the data protection for the data stored in the storage.
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公开(公告)号：US11341007B2
公开(公告)日：2022-05-24
申请号：US17200387
申请日：2021-03-12
Applicant: Hitachi, Ltd.
Inventor： Sachie Tajima , Masakuni Agetsuma , Shintaro Ito , Takahiro Yamamoto
Abstract: Two or more nodes respectively provided with two or more storage control programs constituting each redundantization group maintain redundantization of metadata at the two or more nodes. When a node failure occurs, a failover from the corresponding active storage control program to a standby storage control program is performed. As regarding at least one standby storage control program, a node with the standby storage control program arranged therein compresses a target metadata portion including a metadata portion capable of being accessed after the failover, of metadata existing in the node as regarding the corresponding redundantization group, and stores the same in a memory of the node.
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公开(公告)号：US20220107747A1
公开(公告)日：2022-04-07
申请号：US17187071
申请日：2021-02-26
Applicant: Hitachi, Ltd.
Inventor： Hiroto Ebara , Yoshinori Ohira , Takaki Nakamura , Masakuni Agetsuma
Abstract: Each server stores metadata for managing a volume having a logical block mapped to physical blocks of storage devices, and provides a compute host with the volume according to the metadata. A computer system calculates the metadata amount, which is the data amount of the metadata of the volume, for each volume, determines a migration target volume from the volumes based on each metadata amount, and performs volume migration that transfers the computer node that provides the compute host with the migration target volume to a migration destination computer node.
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公开(公告)号：US20220100617A1
公开(公告)日：2022-03-31
申请号：US17478109
申请日：2021-09-17
Applicant: Hitachi, Ltd.
Inventor： Shintaro Ito , Takahiro Yamamoto , Sachie Tajima , Masakuni Agetsuma
Abstract: Each redundancy group is constituted by one active program (storage control software of the active program) and N standby programs (N is an integer of two or more). Each of the N standby programs is associated with a priority to be determined as a failover (FO) destination. In the same redundancy group, FO is performed from the active program to the standby program based on the priority. For the plurality of pieces of storage control software including the active programs and the standby programs that change to be active by FO in the plurality of redundancy groups arranged in the same node, standby storage control software that can set each of the programs as a FO destination are arranged in different nodes.
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