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    STORAGE SYSTEM AND CONTROL METHOD THEREOF
    51.
    发明申请
    STORAGE SYSTEM AND CONTROL METHOD THEREOF 有权

    公开(公告)号：US20210278989A1

    公开(公告)日：2021-09-09

    申请号：US17208129

    申请日：2021-03-22

    Applicant: Hitachi, Ltd.

    Inventor： Kazuki MATSUGAMI ,  Tomohiro KAWAGUCHI ,  Akira YAMAMOTO

    IPC: G06F3/06

    Abstract: In a case of exchanging a migration source storage controller and a migration destination storage controller sharing one storage medium during replacement of storage devices, when hardware configurations or data management forms of the storage controllers are different, data in the storage medium cannot be shared even when data management information can be copied. Accordingly, a storage system, having a storage control unit and a storage drive provided with a storage medium, includes data management information for accessing data in the storage drive. A first storage control unit copies data management information about the data in the storage drive to a second storage control unit. When a write request is received from a host after copying of the data management information begins, each of the first storage and second storage control units stores write data related to the write request in a separate storage area of the storage drive.

    COMPOUND STORAGE SYSTEM AND STORAGE CONTROL METHOD TO CONFIGURE CHANGE ASSOCIATED WITH AN OWNER RIGHT TO SET THE CONFIGURATION CHANGE
    52.
    发明申请
    COMPOUND STORAGE SYSTEM AND STORAGE CONTROL METHOD TO CONFIGURE CHANGE ASSOCIATED WITH AN OWNER RIGHT TO SET THE CONFIGURATION CHANGE 有权

    公开(公告)号：US20210263659A1

    公开(公告)日：2021-08-26

    申请号：US17314889

    申请日：2021-05-07

    Applicant: Hitachi, Ltd.

    Inventor： Akira YAMAMOTO ,  Miho IMAZAKI

    IPC: G06F3/06

    Abstract: One or more storage systems are connected to one or more storage boxes comprising multiple storage devices. Multiple storage areas provided by one or more storage boxes include an allocated area, which is a storage area that is allocated to a virtual volume, and an empty area, which is a storage area that is not allocated to any logical volume. Multiple owner rights corresponding to multiple storage areas are set in one or more storage systems. A storage system having an empty area owner right changes an empty area to the allocated area by allocating the empty area. In a case where a configuration change (a relative change in the number of storage boxes with respect to the number of storage systems) is performed, a first storage system that exists after the configuration change sets, in the first storage system, either more or fewer owner rights than the owner rights, which have been allocated to the first storage system before the configuration change.

    CACHING METHOD FOR HYBRID CLOUD STORAGE RUNNING DEV/TEST ON PUBLIC CLOUD
    53.
    发明申请
    CACHING METHOD FOR HYBRID CLOUD STORAGE RUNNING DEV/TEST ON PUBLIC CLOUD 有权

    公开(公告)号：US20210157498A1

    公开(公告)日：2021-05-27

    申请号：US16691484

    申请日：2019-11-21

    Applicant: Hitachi, Ltd.

    Inventor： Miho KOBAYASHI ,  Masanori TAKADA ,  Satoshi KANEKO ,  Akira YAMAMOTO

    IPC: G06F3/06 ,  G06F16/27

    Abstract: Example implementations described herein are directed to management of a first storage system for an on-premise system and a second storage system for a public cloud system. Such example implementations can involve, responsive to an update to one or more of a plurality of snapshot volumes in the first storage system, updating first shared page information stored in the first storage system according to the update to the one or more snapshot volumes, the first shared page information indicative of pages shared between the plurality of snapshot volumes in the first storage system; transmitting instructions to the second storage system to copy the updates to the one or more snapshot volumes from the first shared page information to a second shared page information stored in the second storage system; and executing read or write operations made to the second storage system based on the second shared page information.

    STORAGE SYSTEM
    54.
    发明申请
    STORAGE SYSTEM 审中-公开

    公开(公告)号：US20200272337A1

    公开(公告)日：2020-08-27

    申请号：US16870441

    申请日：2020-05-08

    Applicant: HITACHI, LTD.

    Inventor： Hiroaki AKUTSU ,  Akira YAMAMOTO

    IPC: G06F3/06 ,  G06F11/10 ,  G06F12/02

    Abstract: In write processing of a data set group to be written to be one or more data sets to be written, a storage system performs encoding processing including processing for generating a data model showing regularity of the data set group to be written and having one or more input values as an input and the data set group as an output. In the write processing, the storage system writes the data model generated in the encoding processing and associated with a key of the data set group to be written.

    COMPOUND STORAGE SYSTEM AND STORAGE CONTROL METHOD TO CONFIGURE CHANGE ASSOCIATED WITH AN OWNER RIGHT TO SET THE CONFIGURATION CHANGE
    55.
    发明申请
    COMPOUND STORAGE SYSTEM AND STORAGE CONTROL METHOD TO CONFIGURE CHANGE ASSOCIATED WITH AN OWNER RIGHT TO SET THE CONFIGURATION CHANGE 审中-公开

    公开(公告)号：US20200210083A1

    公开(公告)日：2020-07-02

    申请号：US16814557

    申请日：2020-03-10

    Applicant: Hitachi, Ltd.

    Inventor： Akira YAMAMOTO ,  Miho IMAZAKI

    IPC: G06F3/06

    Abstract: One or more storage systems are connected to one or more storage boxes comprising multiple storage devices. Multiple storage areas provided by one or more storage boxes include an allocated area, which is a storage area that is allocated to a virtual volume, and an empty area, which is a storage area that is not allocated to any logical volume. Multiple owner rights corresponding to multiple storage areas are set in one or more storage systems. A storage system having an empty area owner right changes an empty area to the allocated area by allocating the empty area. In a case where a configuration change (a relative change in the number of storage boxes with respect to the number of storage systems) is performed, a first storage system that exists after the configuration change sets, in the first storage system, either more or fewer owner rights than the owner rights, which have been allocated to the first storage system before the configuration change.

    METHOD AND APPARATUS FOR REPLICATING DATA BETWEEN STORAGE SYSTEMS
    56.
    发明申请
    METHOD AND APPARATUS FOR REPLICATING DATA BETWEEN STORAGE SYSTEMS 审中-公开

    公开(公告)号：US20190037016A1

    公开(公告)日：2019-01-31

    申请号：US16073299

    申请日：2016-04-25

    Applicant: HITACHI, LTD.

    Inventor： Hideo SAITO ,  Keisuke HATASAKI ,  Akira YAMAMOTO

    IPC: H04L29/08 ,  G06F3/06

    Abstract: Example implementations described herein are directed to replication of data between different environments selectively while maintaining the performance of applications. The replication of data may be used to replicate data from a data center running a business critical application to another data center running an analytics application. In example implementations, a storage management program translates the IDs of database tables to storage locations, and the storage management program requests a storage system to replicate those storage locations to another storage system.

    DATA MIGRATION METHOD AND COMPUTER SYSTEM
    57.
    发明申请
    DATA MIGRATION METHOD AND COMPUTER SYSTEM 审中-公开

    公开(公告)号：US20180121112A1

    公开(公告)日：2018-05-03

    申请号：US15546124

    申请日：2016-02-24

    Applicant: Hitachi, Ltd.

    Inventor： Miho IMAZAKI ,  Masakuni AGETSUMA ,  Akira YAMAMOTO ,  Akira DEGUCHI

    IPC: G06F3/06

    CPC classification number: G06F3/0619 ,  G06F3/061 ,  G06F3/0647 ,  G06F3/065 ,  G06F3/0665 ,  G06F3/067

    Abstract: An instruction to associate a second logical volume with a second virtual storage, which is a migration destination of a first virtual storage that provides a first logical volume, is transmitted. The first virtual storage is a virtual storage to which a virtual resource provided by a virtual managing unit is allocated. A copy instruction, which is an instruction to copy data from either one of the first logical volume and a copy source logical volume of the first logical volume to the second logical volume is transmitted. When copy completion, which is completion of the data copy to the second logical volume, is detected, an erasing instruction, which is an instruction to erase the first virtual storage, is transmitted to the virtual managing unit.

    VIRTUAL STORAGE SYSTEM
    58.
    发明申请
    VIRTUAL STORAGE SYSTEM 审中-公开

    公开(公告)号：US20170308316A1

    公开(公告)日：2017-10-26

    申请号：US15646364

    申请日：2017-07-11

    Applicant: HITACHI, LTD.

    Inventor： Akira YAMAMOTO ,  Hiroaki AKUTSU ,  Tomohiro KAWAGUCHI

    IPC: G06F3/06

    CPC classification number: G06F3/0631 ,  G06F3/0604 ,  G06F3/0608 ,  G06F3/0664 ,  G06F3/067

    Abstract: A virtual storage system according to an aspect of the present invention includes multiple storage systems each including: a storage controller that accepts a read/write request for reading or writing from and to a logical volume; and multiple storage devices. The storage system defines a pool that manages the storage device capable of allocating any of storage areas to the logical volume, and manages the capacity (pool capacity) of the storage areas belonging to the pool, and the capacity (pool available capacity) of unused storage areas in the pool. Furthermore, the storage system calculates the total value of the pool available capacities of the storage systems included in the virtual storage system, and provides the server with the total value as the pool available capacity of the virtual storage system.

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