公开(公告)号：US20170357589A1

公开(公告)日：2017-12-14

申请号：US15540687

申请日：2015-06-19

Applicant: Hitachi, Ltd.

Inventor： Shinsuke IZAWA ,  Sadahiro SUGIMOTO ,  Yuki SAKASHITA

IPC: G06F12/0866 ,  G06F13/14 ,  G06F13/42 ,  G06F13/10 ,  G06F12/0888 ,  G06F3/06

CPC classification number: G06F12/0866 ,  G06F3/06 ,  G06F3/0631 ,  G06F12/0888 ,  G06F13/10 ,  G06F13/14 ,  G06F13/42

Abstract: When one of a plurality of storage apparatuses receives an input/output (IO) request in which the address of a logical volume is designated, a cache destination storage device in which I/O data conforming to the received I/O request is to be cached is determined on the basis of a target I/O pattern and/or a coupling mode. The I/O data is cached in the CM area of the cache destination storage device. The target I/O pattern is the one among a plurality of I/O patterns to which an I/O conforming to the received I/O request belongs. Each of the plurality of I/O patterns pertains to whether an I/O destination address in the logical volume is random or sequential. The coupling mode indicates whether or not a storage device that receives an I/O request in which the same address as that designated in the received I/O request is designated has been determined.

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：US20140304461A1

公开(公告)日：2014-10-09

申请号：US14311442

申请日：2014-06-23

Applicant: Hitachi, Ltd.

Inventor： Jun KITAHARA ,  Masanori TAKADA ,  Sadahiro SUGIMOTO

IPC: G06F3/06

CPC classification number: G06F3/0658 ,  G06F3/0604 ,  G06F3/0613 ,  G06F3/0659 ,  G06F3/0679 ,  G06F3/0688 ,  G06F11/108 ,  G06F2211/1054

Abstract: The storage system includes a plurality of flash memory devices, each of the flash memory devices including a flash memory controller and flash memory chips, which are configured as a RAID group and a storage controller, coupled to the plurality of flash memory devices, configured to receive data from a computer and send the data to a first flash memory device of the plurality of flash memory devices. The flash memory controller of the flash memory device is configured to receive the data from the storage controller and execute a parity operation using the data.

Abstract translation: 存储系统包括多个闪速存储器设备，每个闪存器件包括闪存控制器和闪速存储器芯片，其被配置为耦合到多个闪速存储器设备的RAID组和存储控制器，配置为 从计算机接收数据并将数据发送到多个闪存设备中的第一闪存设备。 闪速存储器件的闪存控制器被配置为从存储控制器接收数据，并使用该数据执行奇偶校验操作。

公开(公告)号：US20230136735A1

公开(公告)日：2023-05-04

申请号：US18083653

申请日：2022-12-19

Applicant: Hitachi, Ltd.

Inventor： Naoya OKADA ,  Takashi NAGAO ,  Kentaro SHIMADA ,  Ryosuke TATSUMI ,  Sadahiro SUGIMOTO

IPC: G06F3/06

Abstract: 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：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：US20150363134A1

公开(公告)日：2015-12-17

申请号：US14124127

申请日：2013-03-04

Applicant: Hitachi, Ltd.

Inventor： Kazuei HIRONAKA ,  Sadahiro SUGIMOTO ,  Shigeo HOMMA

IPC: G06F3/06

CPC classification number: G06F3/0641 ,  G06F3/061 ,  G06F3/0626 ,  G06F3/065 ,  G06F3/067 ,  G06F3/0683 ,  G06F12/0868 ,  H04L67/1097

Abstract: Access performance of a storage apparatus to which a deduplication technique is applied is enhanced.A storage apparatus includes: a plurality of storage media; a cache memory; a control unit for controlling inputting of data to, and outputting of data from, the storage media, wherein the control unit: provides a host system with a first storage area composed of storage areas of the plurality of storage media and a second storage area having the same performance characteristic as that of the storage media which provide the first storage area; and stores a first data row, which is deduplicated, in the first storage area and a second data row, which is created based on a data row that is the first data row before being deduplicated, in consecutive areas of physical areas composed of the second storage area.

Abstract translation: 提高应用了重复数据消除技术的存储装置的存取性能得到提高。 存储装置包括：多个存储介质; 高速缓冲存储器 控制单元，用于控制向存储介质输入数据和从存储介质输出数据，其中所述控制单元向主机系统提供由所述多个存储介质的存储区域组成的第一存储区域和第二存储区域，所述第二存储区域具有 与提供第一存储区域的存储介质相同的性能特性; 并且将第一数据行（其被重复数据删除）存储在第一存储区域中，并且在由第二存储区域构成的物理区域的连续区域中，基于作为重复数据消除的第一数据行的数据行创建的第二数据行 储藏区域。

公开(公告)号：US20240403167A1

公开(公告)日：2024-12-05

申请号：US18602479

申请日：2024-03-12

Applicant: Hitachi, Ltd.

Inventor： Hiroka IHARA ,  Sadahiro SUGIMOTO ,  Tomohiro YOSHIHARA

IPC: G06F11/10 ,  G06F11/20

Abstract: Storage controllers shift from a normal operation mode to a degraded operation mode in accordance with a command from a management apparatus. Each of the storage controllers in the normal operation mode works in the normal operation state. In transition from the normal operation mode to the degraded operation mode in accordance with a command from the management apparatus, a storage controller designated by the management apparatus changes from the normal operation state into the standing-by state and the other storage controllers except for the designated storage controller change from the normal operation state into the degraded operation state. The storage controller in the standing-by state changes into the degraded operation state in response to stop of a storage controller in the degraded operation state because of occurrence of a failure under the degraded operation mode.

公开(公告)号：US20180322024A1

公开(公告)日：2018-11-08

申请号：US15749014

申请日：2015-07-31

Applicant: HITACHI, LTD.

Inventor： Takashi NAGAO ,  Sadahiro SUGIMOTO ,  Tomohiro KAWAGUCHI ,  Norio SIMOZONO

IPC: G06F11/20 ,  G06F11/16 ,  G06F12/0871 ,  G06F3/06

Abstract: A storage system capable of dynamically securing free space when a certain storage apparatus is disused and reducing the influence on the system upon dynamically securing the free space without having to continuously secure, in a memory of another storage apparatus, free space capable of storing management information of the corresponding storage apparatus in preparation of a case where such storage apparatus is disused. Each storage apparatus comprises a memory including a management information storage area for storing management information and a cache area for storing cache information, and a processor which manages a status of the cache area. At least certain processors determine a storage apparatus to become a copy destination of the copy target management information. The storage apparatus of the copy destination releases at least a part of the cache area and stores the management information in the released cache area.

公开(公告)号：US20250165398A1

公开(公告)日：2025-05-22

申请号：US18582230

申请日：2024-02-20

Applicant: Hitachi, Ltd.

Inventor： Sadahiro SUGIMOTO ,  Tomohiro Yoshihara ,  Takashi Nagao

IPC: G06F12/0802

Abstract: A controller has a memory data protection function of generating a cache data log including data of a memory and a header related to update of the data and writing the cache data log to any one of a plurality of kinds of drives, and the controller uses the memory data protection function to select, from the plurality of kinds of drives, a drive that is to store the cache data log, according to necessary performance, and store the cache data log in the selected drive.

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.