公开(公告)号：US20240020010A1

公开(公告)日：2024-01-18

申请号：US17945173

申请日：2022-09-15

Applicant: Hitachi, Ltd.

Inventor： Nobuhiro YOKOI

IPC: G06F3/06

CPC classification number: G06F3/0611 ,  G06F3/0688 ,  G06F3/0659

Abstract: A storage systems is configured so that when a network interface receives a write request, the network interface performs protocol processing on the write request and transfers a write command to a storage controller, the storage controller reserves a data storage area in a cache memory, the network interface receives a data transfer request from the storage controller and stores data relating to the write request in the reserved storage area of the cache memory, the storage controller transfers a write response to the network interface, and the network interface responds to the source of the write request.

公开(公告)号：US20210240351A1

公开(公告)日：2021-08-05

申请号：US17014296

申请日：2020-09-08

Applicant: HITACHI, LTD.

Inventor： Nobuhiro YOKOI ,  Tomohiro KAWAGUCHI ,  Akira DEGUCHI

IPC: G06F3/06

Abstract: A first storage system that provides a primary site and a second storage system that provides a secondary site are provided to quickly and easily switch between the storage systems. A storage controller of the storage system performs remote copy from a first data volume of the first storage system to a second data volume of the second storage system, after a failover is performed from the primary site to the secondary site, accumulates data and operation that are processed at the secondary site in a journal volume of the second storage system as a secondary site journal, and restores the first data volume using the secondary site journal when the primary site is recovered.

公开(公告)号：US20200301599A1

公开(公告)日：2020-09-24

申请号：US16793855

申请日：2020-02-18

Applicant: Hitachi, Ltd.

Inventor： Hirotoshi AKAIKE ,  Koji HOSOGI ,  Norio SHIMOZONO ,  Sadahiro SUGIMOTO ,  Nobuhiro YOKOI

IPC: G06F3/06 ,  G06F12/1009

Abstract: A storage system includes at least one drive chassis connected to at least one host computer via a first network, and a storage controller connected to the drive chassis, in which the storage controller instructs the drive chassis to create a logical volume, and the drive chassis creates a logical volume according to an instruction from the storage controller, provides a storage area of the storage system to the host computer, and receives an IO command from the host computer to the storage area of the storage system.

公开(公告)号：US20210042032A1

公开(公告)日：2021-02-11

申请号：US16810575

申请日：2020-03-05

Applicant: Hitachi, Ltd.

Inventor： Nobuhiro YOKOI ,  Hirotoshi AKAIKE ,  Ryosuke TATSUMI ,  Koji HOSOGI ,  Akira YAMAMOTO

IPC: G06F3/06 ,  G11B33/04 ,  G06F12/02

Abstract: A storage system for continuing I/O without affecting drive box addition to a host computer includes: a plurality of drive boxes for connecting to a computer device that transmits commands for data reads or writes; and a storage controller connected to the drive boxes. A first drive box provides a first storage region to the computer device. The storage controller manages correspondence between the first storage region and a physical storage region of the drives constituting the first storage region. The first drive box receives a command for the first storage region from the computer device and transfers the command to the storage controller. The storage controller generates a data transfer command including a data storage destination based on the address management table, and transfers the command to the first drive box. The first drive box then transfers the data transfer command to the second drive box.

公开(公告)号：US20200379668A1

公开(公告)日：2020-12-03

申请号：US16996074

申请日：2020-08-18

Applicant: Hitachi, Ltd.

Inventor： Hirotoshi AKAIKE ,  Koji HOSOGI ,  Norio SHIMOZONO ,  Sadahiro SUGIMOTO ,  Nobuhiro YOKOI

IPC: G06F3/06 ,  G06F12/1009

Abstract: A storage system includes at least one drive chassis connected to at least one host computer via a first network, and a storage controller connected to the drive chassis, in which the storage controller instructs the drive chassis to create a logical volume, and the drive chassis creates a logical volume according to an instruction from the storage controller, provides a storage area of the storage system to the host computer, and receives an IO command from the host computer to the storage area of the storage system.

公开(公告)号：US20230400982A1

公开(公告)日：2023-12-14

申请号：US18176707

申请日：2023-03-01

Applicant: Hitachi, Ltd.

Inventor： Hiroka IHARA ,  Nobuhiro YOKOI ,  Takashi NAGAO ,  Yoshihiro YOSHII

IPC: G06F3/06

CPC classification number: G06F3/061 ,  G06F3/0641 ,  G06F3/0679

Abstract: A storage system includes: a central processing unit; a main memory; first management information that associates a hash value of received data with an address in a volume; and an I/O processing package. The I/O processing package includes an I/O processor and an I/O memory. The I/O processor executes protocol processing. The I/O processor executes at least a part of search processing of an address associated with a hash value of first received data in the first management information. The central processing unit controls execution of deduplication processing of the first received data based on data of an address associated with the hash value of the first received data.

公开(公告)号：US20230328008A1

公开(公告)日：2023-10-12

申请号：US18205856

申请日：2023-06-05

Applicant: Hitachi, Ltd.

Inventor： Nobuhiro YOKOI ,  Hiroka IHARA

IPC: H04L49/9047 ,  H04L49/90

CPC classification number: H04L49/9052 ,  H04L49/9084

Abstract: A network interface includes a processor, memory, and a cache between the processor and the memory. The processor secures a plurality of buffers for storing transfer data in the memory, and manages an allocation order of available buffers of the plurality of buffers. The processor returns a buffer released after data transfer to a position before a predetermined position of the allocation order.

公开(公告)号：US20230305731A1

公开(公告)日：2023-09-28

申请号：US18198731

申请日：2023-05-17

Applicant: Hitachi, Ltd.

Inventor： Akira DEGUCHI ,  Nobuhiro YOKOI ,  Hiroka IHARA

IPC: G06F3/06

CPC classification number: G06F3/065 ,  G06F3/061 ,  G06F3/0683

Abstract: A primary storage system reads a plurality of journal data, and performs collective compression that is compression of data that is at least a part of the plurality of pieces of journal data in the plurality of journals and is larger than a size of one journal data. The collectively compressed data, which is a plurality of pieces of journal data subjected to collective compression, is a transfer target from the primary storage system to the secondary storage system. The journal is journal data and metadata including a write order of the journal data and associated with the journal data. The journal data is a copy of data written in the primary volume. The secondary storage system acquires a plurality of pieces of journal data by decompressing one or more pieces of collectively compressed data, and writes the plurality of pieces of journal data to the secondary volume.

公开(公告)号：US20160132271A1

公开(公告)日：2016-05-12

申请号：US14772887

申请日：2013-07-26

Applicant: HITACHI, LTD.

Inventor： Masanori TAKADA ,  Nobuhiro YOKOI ,  Sadahiro SUGIMOTO ,  Akira YAMAMOTO

IPC: G06F3/06

CPC classification number: G06F3/0644 ,  G06F3/0604 ,  G06F3/061 ,  G06F3/0659 ,  G06F3/0671 ,  G06F3/0673

Abstract: In a computer system having a storage controller that receives a read request or a write request, a processor is configured to send to an interface device either a read-support indication, which is an indication to execute either all or a portion of read processing for read-data of the read request, or a write-support indication, which is an indication for either all or a portion of write processing for write-data of the write request. Then, the interface device, in accordance with either the read-support indication or the write-support indication, is configured to execute either all or a portion of the read processing for the read-data, or all or a portion of the write processing for the write-data, and to send to a host computer either a first response to the effect that the read processing has been completed, or a second response that the write processing has been completed.

Abstract translation: 在具有接收读取请求或写入请求的存储控制器的计算机系统中，处理器被配置为向接口设备发送读取支持指示，该读取支持指示是执行全部或一部分读取处理的指示， 读取请求的读取数据或写入支持指示，其是写入请求的写入数据的写入处理的全部或一部分的指示。 然后，根据读取支持指示或写入支持指示的接口设备被配置为执行读取数据的全部或一部分读取处理，或全部或一部分写入处理 并且向主计算机发送对读取处理已经完成的第一响应或者写入处理已经完成的第二响应。

公开(公告)号：US20220276785A1

公开(公告)日：2022-09-01

申请号：US17471575

申请日：2021-09-10

Applicant: Hitachi, Ltd.

Inventor： Akira DEGUCHI ,  Nobuhiro YOKOI ,  Hiroka IHARA

IPC: G06F3/06

Abstract: A primary storage system reads a plurality of journal data, and performs collective compression that is compression of data that is at least a part of the plurality of pieces of journal data in the plurality of journals and is larger than a size of one journal data. The collectively compressed data, which is a plurality of pieces of journal data subjected to collective compression, is a transfer target from the primary storage system to the secondary storage system. The journal is journal data and metadata including a write order of the journal data and associated with the journal data. The journal data is a copy of data written in the primary volume. The secondary storage system acquires a plurality of pieces of journal data by decompressing one or more pieces of collectively compressed data, and writes the plurality of pieces of journal data to the secondary volume.