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    STORAGE SYSTEM AND STORAGE CONTROL METHOD
    71.
    发明申请
    STORAGE SYSTEM AND STORAGE CONTROL METHOD 审中-公开

    公开(公告)号：US20190212937A1

    公开(公告)日：2019-07-11

    申请号：US16119091

    申请日：2018-08-31

    Applicant: HITACHI, LTD.

    Inventor： Akihiro HARA ,  Akira YAMAMOTO ,  Masakuni AGETSUMA ,  Hideo SAITO

    IPC: G06F3/06 ,  G06F17/30

    Abstract: A storage system as a storage cluster recognized as one storage device with respect to a host system specifies a primary volume, to which one or more snapshot volumes are associated, as a migration source primary volume and performs migration processing of migrating at least the migration source primary volume from among the migration source primary volume and a part of the snapshot volumes from a migration source storage device (storage device including specified migration source primary volume and one or more snapshot volume) to a migration target storage device.

    INFORMATION SYSTEM, MANAGEMENT PROGRAM, AND PROGRAM EXCHANGE METHOD OF INFORMATION SYSTEM
    72.
    发明申请
    INFORMATION SYSTEM, MANAGEMENT PROGRAM, AND PROGRAM EXCHANGE METHOD OF INFORMATION SYSTEM 审中-公开

    公开(公告)号：US20190087112A1

    公开(公告)日：2019-03-21

    申请号：US16192919

    申请日：2018-11-16

    Applicant: HITACHI, LTD.

    Inventor： Akira YAMAMOTO ,  Takahiro YAMAMOTO

    IPC: G06F3/06 ,  G06F8/61

    Abstract: An information system according to one embodiment of this invention includes a first computer which is an SDS (Software Defined Storage) having a virtualization function and a second computer which is an SDS. The first computer can provide a logical volume using a volume in the second computer as a storage region by the virtualization function. When the information system receives a direction to install a storage control program to the second computer, the information system specifies the logical volume using the volume of the second computer as the storage region among logical volumes in the first computer, and then moves data stored in the volume of the second computer used by the specified logical volume as the storage region to a storage device in the first computer. Thereafter, the storage control program is installed in the second computer.

    STORAGE SYSTEM
    74.
    发明申请
    STORAGE SYSTEM 审中-公开

    公开(公告)号：US20180314666A1

    公开(公告)日：2018-11-01

    申请号：US15959675

    申请日：2018-04-23

    Applicant: Hitachi, Ltd.

    Inventor： Katsuya TANAKA ,  Kentaro SHIMADA ,  Akira YAMAMOTO ,  Sadahiro SUGIMOTO

    IPC: G06F13/42 ,  G06F13/16

    CPC classification number: G06F13/4221 ,  G06F13/1668 ,  G06F13/4022 ,  G06F13/404 ,  G06F2213/0026

    Abstract: Efficient communication between storage controllers can be performed. A storage system includes one or more backend switches that connect a first processor, a second processor, and one or more storage devices to each other. Each backend switch identifies a destination of a frame by referring to the frame received from the first processor. In a case where the destination of the frame is the second processor, each backend switch translates a first address, included in the frame, for specifying a location on the second memory in an address space of the first processor, into a second address for specifying the location on the second memory in an address space of the second processor, and transfers the frame including the second address to the second storage controller.

    COMPUTER SYSTEM AND DATABASE MANAGEMENT METHOD
    76.
    发明申请
    COMPUTER SYSTEM AND DATABASE MANAGEMENT METHOD 审中-公开

    公开(公告)号：US20180081928A1

    公开(公告)日：2018-03-22

    申请号：US15564514

    申请日：2015-04-08

    Applicant: Hitachi, Ltd.

    Inventor： Kazutomo USHIJIMA ,  Akira YAMAMOTO

    IPC: G06F17/30 ,  G06F3/06 ,  G06F12/10

    CPC classification number: G06F16/2365 ,  G06F3/0608 ,  G06F3/0652 ,  G06F3/067 ,  G06F12/10 ,  G06F16/2282 ,  G06F16/2455 ,  G06F2212/2022 ,  G06F2212/7201

    Abstract: A blockwise-erase nonvolatile storage device for storing a database includes extended logical-to-physical conversion information that associates, for each of a plurality of logical addresses, a timestamp, a physical address, and a reference counter with each other. Each reference counter indicates the number of referring sources to refer to data associated with both the logical address and the timestamp that are associated with the reference counter. On the basis of the conversion information, it is determined whether a target logical address has associated therewith a timestamp older than the latest timestamp and whether the reference counter associated with both the target logical address and the older timestamp indicates that there is no referring source. If so, then the blockwise-erase nonvolatile storage device manages, as an erasable physical area (invalid physical area), the physical area at the physical address associated with both the target logical address and the older timestamp.

    STORAGE SYSTEM AND DATA WRITING CONTROL METHOD
    77.
    发明申请
    STORAGE SYSTEM AND DATA WRITING CONTROL METHOD 审中-公开

    公开(公告)号：US20180032433A1

    公开(公告)日：2018-02-01

    申请号：US15547984

    申请日：2015-03-04

    Applicant: Hitachi, Ltd.

    Inventor： Shintaro ITO ,  Akira YAMAMOTO ,  Ryosuke TATSUMI ,  Takanobu SUZUKI

    IPC: G06F12/0804 ,  G06F12/109

    CPC classification number: G06F12/0804 ,  G06F3/061 ,  G06F3/0656 ,  G06F3/0659 ,  G06F3/0689 ,  G06F12/109 ,  G06F13/10 ,  G06F2212/1044 ,  G06F2212/262 ,  G06F2212/657

    Abstract: A storage system receives a write request which specifies a logical volume address associated with a RAID group, and makes a first determination whether write target data in accordance with the write request exists in a cache memory. When the first determination result is negative, the storage system makes a second determination whether at least one of one or more conditions is met, the condition being that random write throughput performance is expected to increase by asynchronous de-staging processing of storing the write target data in the RAID group asynchronously to write processing performed in response to the write request. When the second determination result is negative, the storage system selects, for the write request, synchronous storage processing, which is processing of storing the write target data in the RAID group in the write processing and for which a load on a processor is lower than the asynchronous de-staging processing.

    STORAGE SYSTEM AND STORAGE SYSTEM MANAGEMENT METHOD
    78.
    发明申请
    STORAGE SYSTEM AND STORAGE SYSTEM MANAGEMENT METHOD 审中-公开
    存储系统和存储系统管理方法

    公开(公告)号：US20170010809A1

    公开(公告)日：2017-01-12

    申请号：US15121785

    申请日：2014-09-24

    Applicant: HITACHI, LTD.

    Inventor： Kazuei HIRONAKA ,  Akira YAMAMOTO ,  Yoshihiro YOSHII ,  Mitsuo HAYASAKA

    IPC: G06F3/06 ,  G06F12/02

    Abstract: It is provided a storage system comprising at least one controller and a storage device. The at least one controller verifies, for each predetermined storage area within a logical volume provided to the host computer, whether data of the each predetermined storage area is duplicated to another storage area. The storage device holds unshared data associated only with the storage area and shared data associated with the storage area and the another storage area in the case where the data of the each predetermined storage area is identical to the data of the another storage area. The at least one controller reads the unshared data in the case where a request to read the data is received under a state in which the unshared data and the shared data are held, and releases an area in which the unshared data is stored at predetermined timing.

    Abstract translation: 提供了一种包括至少一个控制器和存储装置的存储系统。 至少一个控制器针对提供给主计算机的逻辑卷内的每个预定存储区域，验证每个预定存储区域的数据是否被复制到另一个存储区域。 在每个预定存储区域的数据与另一存储区域的数据相同的情况下，存储设备保存与存储区域相关联的非共享数据和与存储区域相关联的共享数据和另一个存储区域。 在保持非共享数据和共享数据的状态下接收到读取数据的请求的情况下，至少一个控制器读取非共享数据，并且在预定定时释放其中存储非共享数据的区域 。

    STORAGE APPARATUS, STORAGE SYSTEM, AND STORAGE APPARATUS CONTROL METHOD
    80.
    发明申请
    STORAGE APPARATUS, STORAGE SYSTEM, AND STORAGE APPARATUS CONTROL METHOD 有权
    存储设备，存储系统和存储设备控制方法

    公开(公告)号：US20150378816A1

    公开(公告)日：2015-12-31

    申请号：US14769205

    申请日：2013-10-11

    Applicant: HITACHI, LTD.

    Inventor： Atsushi KAWAMURA ,  Akira YAMAMOTO

    IPC: G06F11/10 ,  G06F3/06 ,  G11C29/52

    CPC classification number: G06F11/1068 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/0688 ,  G06F11/1056 ,  G06F11/1076 ,  G06F11/108 ,  G06F11/1088 ,  G06F11/1096 ,  G11C29/52

    Abstract: A control device stores information associating each of a plurality of physical areas with a plurality of logical areas. The control device respectively stores a plurality of first user data included in a first stripe and a first parity data created on the basis thereof in each of the plurality of physical areas, and, in accordance with receiving a write request for updated user data that updates the user data, which is stored in a first physical area, for a first logical area associated with the first physical area, creates a second parity data on the basis of a data group formed using the updated user data and a plurality of second user data that differs from the plurality of first user data.

    Abstract translation: 控制装置存储将多个物理区域中的每一个与多个逻辑区域相关联的信息。 控制装置分别存储包括在第一条带中的多个第一用户数据和在其中基于其生成的第一奇偶校验数据，并且根据接收到对更新的更新的用户数据的写入请求 存储在第一物理区域中的与第一物理区域相关联的第一逻辑区域的用户数据基于使用更新的用户数据形成的数据组和多个第二用户数据创建第二奇偶校验数据 其与多个第一用户数据不同。

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