公开(公告)号：US11816336B2

公开(公告)日：2023-11-14

申请号：US18083653

申请日：2022-12-19

申请人： Hitachi, Ltd.

发明人： Naoya Okada ,  Takashi Nagao ,  Kentaro Shimada ,  Ryosuke Tatsumi ,  Sadahiro Sugimoto

IPC分类号： G06F3/06

CPC分类号： G06F3/0613 ,  G06F3/0608 ,  G06F3/0638 ,  G06F3/0658 ,  G06F3/0688

摘要： The present disclosure is to optimize processes in a storage system. A storage system includes: a first controller including a first computing device and a first memory; a second controller including a second computing device and a second memory; and an interface circuit that transfers data between the first controller and the second controller. The interface circuit reads first compressed data from the second memory. The interface circuit decompresses the first compressed data to generate first uncompressed data, and writes the first uncompressed data into the first memory.

公开(公告)号：US20220334726A1

公开(公告)日：2022-10-20

申请号：US17474562

申请日：2021-09-14

申请人： Hitachi, Ltd.

发明人： Shugo Ogawa ,  Akira Yamamoto ,  Yoshinori Ohira ,  Ryosuke Tatsumi ,  Junji Ogawa ,  Hiroto Ebara

IPC分类号： G06F3/06

摘要： One or a plurality of physical storage devices that provide a physical storage area are connected to first and second computers. The computer updates metadata indicating the address correspondence relationship between the logical address of the volume and the physical address of the physical storage area in the write processing performed based on a write request designating the volume. The first computer copies the metadata to the second computer while receiving the write request. When the address correspondence relationship indicated by the copied metadata portion is changed during copying of the metadata, the first computer updates the metadata portion and copies the metadata portion to the second computer.

公开(公告)号：US11461032B1

公开(公告)日：2022-10-04

申请号：US17472837

申请日：2021-09-13

申请人： Hitachi, Ltd.

发明人： Ryosuke Tatsumi ,  Akira Yamamoto ,  Kazuki Matsugami ,  Kenta Shinozuka

IPC分类号： G06F3/06

摘要： A storage system includes: a storage drive having a storage medium storing a data; and a plurality of storage control units having a processor, a memory, and a port to process the data input and output to and from the storage drive, in which information related to a list of the storage control units mounted on the storage system and a maximum number of the storage control units that can be mounted on the storage system is allowed to be stored, and in which, when the storage control unit is replaced, it is determined whether the configuration to be migrated from the storage control unit to be reduced to the storage control unit to be added is migrated directly or via another storage control unit based on the number of the mounted storage control units and the maximum number of the storage control units that can be mounted.

公开(公告)号：US11330056B2

公开(公告)日：2022-05-10

申请号：US17018649

申请日：2020-09-11

申请人： Hitachi, Ltd.

发明人： Shugo Ogawa ,  Ryosuke Tatsumi ,  Yoshinori Ohira ,  Koji Hosogi

IPC分类号： H04L67/1097 ,  G06F3/06 ,  H04L67/62 ,  H04L67/63

摘要： A possible performance bottleneck associated with insufficient network bands is mitigated to allow improvement of access performance of a storage system.
A storage system includes a first node with a storage medium of storage and a plurality of second nodes each with a controller function for the storage, and is communicatively connected to a host providing an access request to the storage. One of the plurality of second nodes is determined to be a node to which a controller function executing access processing on the storage is assigned on the basis of a first amount of data transfer between the second node and the host and a second amount of data transfer between the second node and the first node.

公开(公告)号：US11256585B2

公开(公告)日：2022-02-22

申请号：US16821562

申请日：2020-03-17

申请人： Hitachi, Ltd.

发明人： Yoshiaki Deguchi ,  Naoya Okada ,  Ryosuke Tatsumi ,  Kentaro Shimada ,  Sadahiro Sugimoto

IPC分类号： G06F11/00 ,  G06F11/20 ,  G06F11/07 ,  G06F11/30 ,  G06F9/4401 ,  G06F1/24 ,  G06F9/54 ,  G06F12/06 ,  G06F12/0873 ,  G06F9/50

摘要： A storage system includes a first storage controller including a plurality of main storage media and one or more processor cores, and a second storage controller including a plurality of main storage media and one or more processor cores and performing communication with the first storage controller. Storage areas of the main storage media in the first storage controller are allocated to an address map. In response to the occurrence of failures in one or mode main storage media of the main storage media of the first storage controller, the first storage controller performs restarting to reallocate the storage areas of the main storage media excluding one or more main storage media having caused the failures to an address map reduced than before the occurrence of the failures. The second storage controller continues operating during the restarting of the first storage controller.

公开(公告)号：US11914868B2

公开(公告)日：2024-02-27

申请号：US17902767

申请日：2022-09-02

申请人： Hitachi, Ltd.

发明人： Ryo Hanafusa ,  Tomohiro Yoshihara ,  Ryosuke Tatsumi ,  Hiroki Fujii

IPC分类号： G06F3/06

CPC分类号： G06F3/0619 ,  G06F3/0653 ,  G06F3/0659 ,  G06F3/0683

摘要： A storage system comprises nodes and drives, and includes at least one mounting area to install the drives. A node manages a parity group constituted of the plurality of drives; generates, in a case where a target drive that is installed in a first mounting area and that belongs to a first parity group is to be moved from the first mounting area to a second mounting area, difference information regarding a storage area where data was written into the target drive during a period in which the target drive is moved from the first mounting area to the second mounting area; and restore data written into the storage area by using data stored in other drives than the target drive that belongs to the first parity group based on the difference information, and write the data into the target drive that has been moved to the second mounting area.

公开(公告)号：US11836386B2

公开(公告)日：2023-12-05

申请号：US17881945

申请日：2022-08-05

申请人： Hitachi, Ltd.

发明人： Ryosuke Tatsumi ,  Akira Yamamoto ,  Kazuki Matsugami

IPC分类号： G06F3/06

CPC分类号： G06F3/0659 ,  G06F3/0607 ,  G06F3/067 ,  G06F3/0619 ,  G06F3/0622 ,  G06F3/0658 ,  G06F3/0679

摘要： In a multi controller storage system, hardware and software are updated without interruption. The storage system including a node has storage control units each including a processor, a memory, and a port; and a storage drive, and the storage control units each request data access and transmit and receive data with respect to a host computer via the ports. The processors process input and output data from the host computer, the memories store the control information in order to access the data stored in the storage drive, and the storage system transmits the control information stored in the memories to another node, stores the control information in the memories of the storage control units, and sets ports of the other node in consideration of a relationship between the storage control units and the ports of the nodes, if the other node can access data relating to the control information.

公开(公告)号：US11714751B2

公开(公告)日：2023-08-01

申请号：US17579746

申请日：2022-01-20

申请人： Hitachi, Ltd.

发明人： Akira Yamamoto ,  Ryosuke Tatsumi ,  Yoshinori Ohira ,  Junji Ogawa

IPC分类号： G06F3/00 ,  G06F11/00 ,  G06F12/00 ,  G06F12/0804 ,  G06F3/06 ,  G06F11/10

CPC分类号： G06F12/0804 ,  G06F3/0604 ,  G06F3/0655 ,  G06F3/0689 ,  G06F11/1076 ,  G06F2212/60

摘要： In a complex system including; one or more storage systems including a cache and a storage controller; and one or more storage boxes including a storage medium, the storage box generates redundant data from write data received from a server, and writes the write data and the redundant data to the storage medium. The storage box transmits the write data to the storage system when it is difficult to generate the redundant data or it is difficult to write the write data and the redundant data to the storage medium. The storage system stores the received write data in the cache.

公开(公告)号：US11334508B2

公开(公告)日：2022-05-17

申请号：US17169775

申请日：2021-02-08

申请人： Hitachi, Ltd.

发明人： Yuto Kamo ,  Ryosuke Tatsumi ,  Tomohiro Yoshihara ,  Takashi Nagao

IPC分类号： G06F13/28 ,  G06F12/0868

摘要： An object of the present invention is to properly secure the consistency of data while suppressing a processing load of a controller on a processor. A storage system includes a plurality of controllers and an HCA that can directly access a memory and can communicate with the controllers. The controller includes a CPU, and a memory having a buffer region into which data is temporarily stored and a cache region into which data is cached. In the case where new data according to a write request is stored into the buffer region, the CPU of the controller sequentially transfers the new data to the cache regions using the HCA without passing through the other buffer regions.

公开(公告)号：US20210191623A1

公开(公告)日：2021-06-24

申请号：US17012308

申请日：2020-09-04

申请人： Hitachi, Ltd.

发明人： Ryosuke Tatsumi ,  Naruki Kurata

IPC分类号： G06F3/06

摘要： To improve the performance of storage systems.
A plurality of controllers monitor a transfer amount of each path of a plurality of host paths and a plurality of drive paths in a logical volume; estimate changes of a host path and a drive path after a change of the priority of the plurality of host paths, and estimate the transfer amount of each path of the plurality of host paths and the plurality of drive paths after the change of the priority on a basis of the estimated changes of the host path and the drive path, and the monitored transfer amount of each path; and change the priority of the plurality of host paths on a basis of the estimated transfer amount of each path such that the transfer amount of each path satisfies a predetermined condition.