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    INFORMATION PROCESSING SYSTEM AND PATH MANAGEMENT METHOD
    1.
    发明申请
    INFORMATION PROCESSING SYSTEM AND PATH MANAGEMENT METHOD 审中-公开

    公开(公告)号：US20190310925A1

    公开(公告)日：2019-10-10

    申请号：US16298619

    申请日：2019-03-11

    Applicant: HITACHI, LTD.

    Inventor： Misato YOSHIDA ,  Masakuni AGETSUMA ,  Hideo SAITO ,  Tsukasa SHIBAYAMA ,  Akira YAMAMOTO

    IPC: G06F11/20 ,  G06F11/14 ,  G06F3/06

    Abstract: A configuration of a redundancy group, which includes a control unit disposed in a storage node and set in an active mode for processing a request from a compute node and a control unit disposed in another storage node and set in a passive mode for taking over the process when a failure occurs in the control unit and the like, is inquired to the storage node, a plurality of paths from the compute node to a volume correlated with the redundancy group are set on the basis of the inquiry result, and the highest priority is set in a path connected to a storage node provided with the control unit of the active mode while the second highest priority is set in a path connected to a storage node provided with the control unit of the passive mode.

    STORAGE SYSTEM FOR REMOTE COPY AND PATH SELECTION METHOD FOR REMOTE COPY
    2.
    发明申请
    STORAGE SYSTEM FOR REMOTE COPY AND PATH SELECTION METHOD FOR REMOTE COPY 有权

    公开(公告)号：US20250156103A1

    公开(公告)日：2025-05-15

    申请号：US18588129

    申请日：2024-02-27

    Applicant: Hitachi, Ltd.

    Inventor： Misato YOSHIDA ,  Takahiro YAMAMOTO

    IPC: G06F3/06

    Abstract: An object of the invention is to reduce a performance decrease in remote copy performed between a second storage system and a first storage system including a plurality of nodes. For each of a plurality of paths between the first and second storage systems, the path is a path that communicably connects any initiator port of the first storage system and any target port of the second storage system. The node includes a first VOL that forms a remote copy pair with a second VOL provided in the second storage system. When sending a command for the remote copy in the remote copy pair to the second storage system, the node selects, unless an abnormality related to the initiator port of the node is detected, the path connected to the initiator port, and sends the command via the selected path.

    STORAGE SYSTEM AND METHOD FOR DEDUPLICATING DATA
    4.
    发明申请
    STORAGE SYSTEM AND METHOD FOR DEDUPLICATING DATA 有权
    存储系统和数据分配方法

    公开(公告)号：US20160259590A1

    公开(公告)日：2016-09-08

    申请号：US14424177

    申请日：2014-03-27

    Applicant: HITACHI, LTD.

    Inventor： Misato YOSHIDA ,  Mitsuo HAYASAKA

    IPC: G06F3/06 ,  H04L29/08

    CPC classification number: G06F3/0641 ,  G06F3/06 ,  G06F3/0608 ,  G06F3/061 ,  G06F3/0619 ,  G06F3/065 ,  G06F3/067 ,  H04L41/0213 ,  H04L67/1095 ,  H04L67/1097

    Abstract: The present invention provides a storage system capable of performing deduplication among nodes in a cluster configuration with a low overhead. The respective nodes mutually monitor whether there is update of deduplication information in other nodes. When it is determined in its own node that there is update in another node, it reflects the update information in another node to the deduplication information of its own node. Then, each node uses the deduplication information having reflected the deduplication information of other nodes to perform deduplication of the storage data of its own node.

    Abstract translation: 本发明提供一种能够以低开销在群集配置中的节点之间执行重复数据删除的存储系统。 相应的节点相互监视其他节点中是否存在重复数据删除信息的更新。 当在其自己的节点中确定在另一个节点中存在更新时，它将另一个节点中的更新信息反映到其自身节点的重复数据删除信息。 然后，每个节点使用反映其他节点的重复数据删除信息的重复数据删除信息来执行其自身节点的存储数据的重复数据删除。

    STORAGE SYSTEM AND COMMUNICATION PATH CONTROL METHOD
    5.
    发明公开
    STORAGE SYSTEM AND COMMUNICATION PATH CONTROL METHOD 审中-公开

    公开(公告)号：US20240289045A1

    公开(公告)日：2024-08-29

    申请号：US18459645

    申请日：2023-09-01

    Applicant: Hitachi, Ltd.

    Inventor： Takahiro YAMAMOTO ,  Misato YOSHIDA ,  Yoshinori OHIRA

    IPC: G06F3/06

    CPC classification number: G06F3/065 ,  G06F3/0604 ,  G06F3/0673

    Abstract: In a storage system, when a communication path for remote copying from a primary volume to a secondary volume is set, a storage node in a primary site makes an inquiry to a discovery node in a secondary site about node information on a node having a secondary volume paired with a primary volume. Based on the node information acquired from the discovery node, a primary volume owner node sets a communication path between the primary volume owner node and a secondary volume owner node, the communication path being used for remote copying volume data from the primary volume to the secondary volume.

    COMPUTER SYSTEM, DISTRIBUTED OBJECT SHARING METHOD, AND EDGE NODE
    7.
    发明申请
    COMPUTER SYSTEM, DISTRIBUTED OBJECT SHARING METHOD, AND EDGE NODE 审中-公开

    公开(公告)号：US20180109611A1

    公开(公告)日：2018-04-19

    申请号：US15540045

    申请日：2015-01-30

    Applicant: Hitachi, Ltd.

    Inventor： Misato YOSHIDA ,  Masanori TAKATA ,  Akiyoshi TSUCHIYA ,  Hitoshi KAMEI

    IPC: H04L29/08 ,  G06F17/30

    CPC classification number: H04L67/1095 ,  G06F11/00 ,  G06F16/176 ,  G06F16/1827 ,  G06F16/1873 ,  H04L67/1097

    Abstract: (A) and (B), described hereinafter, are carried out for objects which differ between an reflection source namespace and a reflection destination namespace, with respect to either: a center node in a migration, which applies an update of a first local namespace which a first edge node (any edge node) provides to a center namespace; or a second edge node (any edge node other than the first edge node) in a synchronization, which applies an update of the center namespace to a second local namespace which the second edge node provides. Specifically, either the center node or the second edge node: (A) determines whether the situation with respect to the differing objects corresponds to a conflict case among defined conflict cases; and (B) if the result of the determination in (A) is affirmative, executes a process according to a confliction resolution policy which is associated with the corresponding conflict case.

    STORAGE SYSTEM AND STORAGE MANAGEMENT METHOD
    8.
    发明公开
    STORAGE SYSTEM AND STORAGE MANAGEMENT METHOD 审中-公开

    公开(公告)号：US20240348683A1

    公开(公告)日：2024-10-17

    申请号：US18461726

    申请日：2023-09-06

    Applicant: Hitachi, Ltd.

    Inventor： Misato YOSHIDA ,  Takahiro YAMAMOTO ,  Katsuto SATO ,  Akira YAMAMOTO ,  Yoshinori OHIRA

    IPC: H04L67/1012 ,  H04L67/1008 ,  H04L67/1097

    CPC classification number: H04L67/1012 ,  H04L67/1008 ,  H04L67/1097

    Abstract: An object is to effectively use resources of a plurality of storage nodes.
    A storage system includes a plurality of storage nodes. The storage system includes: a management unit configured to manage the plurality of storage nodes. Each of the plurality of storage nodes is configured to accumulate credits on a condition that a processing load is within a predetermined range and perform burst in which processing is performed with a load exceeding the predetermined range by consuming the credits. The management unit manages the credits of each storage node, determines a trigger of burst of predetermined storage processing based on an accumulation state of the credits in the plurality of storage nodes related to the storage processing, and executes, when the credits are accumulated in the plurality of storage nodes related to the predetermined storage processing, the predetermined storage processing by the burst by consuming the accumulated credits.

    INFORMATION PROCESSING SYSTEM AND METHOD
    9.
    发明公开
    INFORMATION PROCESSING SYSTEM AND METHOD 审中-公开

    公开(公告)号：US20230153008A1

    公开(公告)日：2023-05-18

    申请号：US17946728

    申请日：2022-09-16

    Applicant: Hitachi, Ltd.

    Inventor： Misato YOSHIDA ,  Hideo SAITO ,  Takaki NAKAMURA ,  Akira YAMAMOTO ,  Naruki KURATA ,  Takahiro YAMAMOTO

    IPC: G06F3/06

    CPC classification number: G06F3/0647 ,  G06F3/067 ,  G06F3/0604

    Abstract: Even without a first storage system does not have compatibility with a second storage system that is different from a default cloud storage service which can be accessed by a cloud computer service as a migration destination of a computer instance, a volume in the first storage system can be migrated to the second storage system. A system causes a migration tool of a cloud computer to migrate, from a first storage system to the cloud computer, a system volume storing an image of an OS for configuring a computer instance to be migrated, and a data volume storing data used by the OS, and creates a mapping volume, which has been mapped to the data volume migrated to the cloud computer with the migration tool, in a second storage system, and sets a path of data input/output from the computer instance to the mapping volume in the computer instance.

    STORAGE SYSTEM AND CONTROL METHOD
    10.
    发明申请
    STORAGE SYSTEM AND CONTROL METHOD 有权

    公开(公告)号：US20230090032A1

    公开(公告)日：2023-03-23

    申请号：US17690302

    申请日：2022-03-09

    Applicant: Hitachi, Ltd.

    Inventor： Misato YOSHIDA ,  Takaki NAKAMURA ,  Takahiro YAMAMOTO ,  Masakuni AGETSUMA

    IPC: G06F11/20 ,  G06F11/07 ,  H04L67/1042

    Abstract: In a storage system, a failover time is shortened while avoiding erroneous detection of a node failure according to network quality. The storage system includes a plurality of storage nodes having processors; a data storage device; the plurality of storage nodes having the processors for processing data to be input to and output from the storage device; and a network for connecting the plurality of storage nodes, wherein the plurality of storage nodes monitors the operation status of each other to perform node failure detection for determining the occurrence of a failure of the storage node on the basis of a time-out value, performs a failover process in which one of the other storage nodes takes over the process of the storage node when the failure occurs in the storage node, and adjusts the time-out value on the basis of the status of the network between the storage nodes.

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