公开(公告)号：US09009395B2

公开(公告)日：2015-04-14

申请号：US13743505

申请日：2013-01-17

Applicant: Hitachi, Ltd.

Inventor： Yoshiki Kano ,  Masanori Takada ,  Akira Yamamoto ,  Akihiko Araki ,  Masayuki Yamamoto ,  Jun Kitahara ,  Sadahiro Sugimoto

IPC: G06F12/00 ,  G06F13/00 ,  G06F12/02 ,  G06F3/06

CPC classification number: G06F12/0246 ,  G06F3/0613 ,  G06F3/0616 ,  G06F3/0659 ,  G06F3/0685 ,  G06F3/0688

Abstract: The amount of data to be stored in a semiconductor nonvolatile memory can be reduced and overhead associated with data processing can be reduced. When a microprocessor receives a write request from a host computer and data D1 to D3 exist in a cache slot, the microprocessor reads the LBA of each piece of the data, manages each piece of the data D1 to D3 using a bitmap table by associating them with their LBAs, generates a specific command CMD based on the LBAs of the data D1 to D3, adds the data D1 to D3 and addresses ADD1 to ADD3 indicating where the data D1 to D3 are to be stored, to the specific command CMD, and sends it to an FMPK. The FMPK stores each piece of update data in a specified block in the flash memory based on the specific command CMD.

Abstract translation: 可以减少要存储在半导体非易失性存储器中的数据量，并且可以减少与数据处理相关的开销。 当微处理器接收到来自主计算机的写请求并且数据D1至D3存在于高速缓存槽中时，微处理器读取每条数据的LBA，使用位图表来管理每条数据D1至D3，通过将它们相关联 与其LBA一起生成基于数据D1至D3的LBA的特定命令CMD，将数据D1至D3和指示数据D1至D3将被存储在哪里的地址ADD1至ADD3添加到特定命令CMD，以及 发送到FMPK。 FMPK基于特定命令CMD将每条更新数据存储在闪存中的指定块中。

公开(公告)号：US08984248B2

公开(公告)日：2015-03-17

申请号：US14144240

申请日：2013-12-30

Applicant: Hitachi, Ltd.

Inventor： Noboru Morishita ,  Hideo Saito ,  Yoshiaki Eguchi ,  Masayuki Yamamoto ,  Akira Yamamoto

IPC: G06F12/00 ,  G06F13/00 ,  G06F3/06

CPC classification number: G06F3/0647 ,  G06F3/0608 ,  G06F3/0611 ,  G06F3/0619 ,  G06F3/0644 ,  G06F3/0665 ,  G06F3/067

Abstract: A second storage maps a migration source volume to a virtual volume of a migration destination volume according to storage virtualization technology. A host system including a host switches an access path from an access path to the migration source volume to an access path to the migration destination volume. The second storage executes copy processing of migrating, from the migration source volume to the migration destination volume, data in an assigned area of a virtual volume according to thin provisioning of the migration source volume based on the information contained in the first thin provisioning information in the first storage, and copying that data from the migration destination volume to a virtual volume according to thin provisioning of a copy destination volume in the second storage. The second storage associates the virtual volume of the copy destination volume with the migration destination volume in substitute for the original virtual volume.

Abstract translation: 根据存储虚拟化技术，第二个存储将迁移源卷映射到迁移目标卷的虚拟卷。 包括主机的主机系统将从访问路径到迁移源卷的访问路径切换到迁移目的地卷的访问路径。 所述第二存储器执行复制处理，所述复制处理根据所述第一精简配置信息中包含的信息，执行从所述迁移源卷迁移到所述迁移目的地卷的虚拟卷的分配区域中的数据， 第一存储器，以及根据第二存储器中的复制目的地卷的精简配置将数据从迁移目的地卷复制到虚拟卷。 第二个存储将复制目标卷的虚拟卷与迁移目标卷相关联，以替代原始虚拟卷。

公开(公告)号：US08806170B2

公开(公告)日：2014-08-12

申请号：US13867155

申请日：2013-04-22

Applicant: Hitachi, Ltd.

Inventor： Masayuki Yamamoto ,  Akira Yamamoto ,  Akira Fujibayashi ,  Jun Kitahara ,  Yoshiki Kano

IPC: G06F12/02 ,  G06F3/06

CPC classification number: G06F12/0246 ,  G06F3/0616 ,  G06F3/0644 ,  G06F3/0685 ,  G06F2212/1036 ,  G06F2212/7206

Abstract: For a storage apparatus where flash memory disks and hard disks coexist, high-density mounting of flash memory modules is achieved. The storage apparatus includes flash memories and a storage controller. A second storage apparatus including magnetic disks is connected to the storage apparatus. The storage controller can form a storage area using a flash memory or a magnetic disk to create a logical volume. When an input/output request is issued from a host computer, if a storage area is formed with a flash memory, the storage controller directly accesses the flash memory to handle the request. When the storage apparatus defines a storage area formed with a flash memory, the storage apparatus defines the storage area by adding up the capacity of a storage area to be provided for the host computer and a substitute area capacity determined in consideration of restrictions on the number deletions of the flash memory.

Abstract translation: 对于闪存盘和硬盘共存的存储装置，实现了高密度安装闪存模块。 存储装置包括闪存和存储控制器。 包括磁盘的第二存储装置连接到存储装置。 存储控制器可以使用闪存或磁盘形成存储区域以创建逻辑卷。 当从主计算机发出输入/输出请求时，如果存储区域形成闪速存储器，则存储控制器直接访问闪存以处理该请求。 当存储装置定义形成有闪速存储器的存储区域时，存储装置通过将要提供给主计算机的存储区域的容量相加来确定存储区域，并且考虑到对数量的限制而确定的替代区域容量 闪存的删除。

公开(公告)号：US12086470B2

公开(公告)日：2024-09-10

申请号：US17561814

申请日：2021-12-24

Applicant: Hitachi, Ltd.

Inventor： Takashi Nagao ,  Tomohiro Yoshihara ,  Akira Yamamoto ,  Yuusaku Kiyota

IPC: G06F3/06 ,  H03M7/30

CPC classification number: G06F3/0661 ,  G06F3/0608 ,  G06F3/0641 ,  G06F3/0673 ,  H03M7/6011

Abstract: The present invention realizes a storage device that has a high data reduction effect without decreasing I/O performances. The storage device includes a processor, an accelerator, a memory, and a storage medium, the processor specifies data to be compressed that is data stored in the storage medium from data stored in the memory and transmits a compression instruction including information relating to the data to be compressed to the accelerator, and the accelerator reads the plurality of continuous items of data from the memory and compresses the plurality of items of data to be compressed obtained by excluding data that is not to be compressed from the plurality of items of data, based on the information relating to the data to be compressed received from the processor, to generate compressed data stored in the storage device.

公开(公告)号：US11720264B2

公开(公告)日：2023-08-08

申请号：US17314889

申请日：2021-05-07

Applicant: Hitachi, Ltd.

Inventor： Akira Yamamoto ,  Miho Imazaki

IPC: G06F3/06

CPC classification number: G06F3/0631 ,  G06F3/0604 ,  G06F3/0607 ,  G06F3/067 ,  G06F3/0608 ,  G06F3/0629 ,  G06F3/0647 ,  G06F3/0659 ,  G06F3/0665 ,  G06F3/0689

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.

公开(公告)号：US11698857B2

公开(公告)日：2023-07-11

申请号：US17848577

申请日：2022-06-24

Applicant: HITACHI, LTD.

Inventor： Hiroaki Akutsu ,  Akira Yamamoto ,  Shigeo Homma ,  Masanobu Yamamoto ,  Yoshinori Ohira

IPC: G06F12/02 ,  G06F3/06 ,  G06F12/1009

CPC classification number: G06F12/0246 ,  G06F3/061 ,  G06F3/0604 ,  G06F3/0647 ,  G06F3/0649 ,  G06F3/0662 ,  G06F3/0683 ,  G06F3/0685 ,  G06F12/1009 ,  G06F3/06 ,  G06F2003/0697 ,  G06F2212/7201

Abstract: A storage system monitors the first access frequency of occurrence which is the access frequency of occurrence from a host device during a first period, and the second access frequency of occurrence which is the access frequency of occurrence from a host device during a second period shorter than the first period. Along with performing data relocation among the tiers (levels) in the first period cycle based on the first access frequency of occurrence, the storage system performs a decision whether or not to perform a second relocation based on the first access frequency of occurrence and the second access frequency of occurrence, synchronously with access from a host device. Here the threshold value utilized in a decision on whether or not to perform the first relocation is different from the threshold value utilized in a decision on whether or not to perform the second relocation.

公开(公告)号：US11675545B2

公开(公告)日：2023-06-13

申请号：US17474562

申请日：2021-09-14

Applicant: Hitachi, Ltd.

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

IPC: G06F3/00 ,  G06F3/06

CPC classification number: G06F3/067 ,  G06F3/0604 ,  G06F3/0647 ,  G06F3/0655

Abstract: 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：US11630734B2

公开(公告)日：2023-04-18

申请号：US17474395

申请日：2021-09-14

Applicant: Hitachi, Ltd.

Inventor： Hiroto Ebara ,  Akira Yamamoto ,  Yoshinori Ohira ,  Takahiro Yamamoto ,  Masakuni Agetsuma ,  Tatsuya Hirai

IPC: G06F11/00 ,  G06F11/14 ,  G06F11/16 ,  G06F11/20 ,  G06F11/07

Abstract: A scale-out storage system includes a plurality of computer nodes each of which has a memory and a processor, and a storage apparatus. The computer nodes have one or more redundancy groups each of which is a group for metadata protection. Each of the one or more redundancy groups includes two or more of the computer nodes including a primary node being a primary computer node and a secondary node being a secondary computer node, and a failover is performed from the primary node to the secondary node. The memory of the primary node has stored therein metadata related to the redundancy group and to be accessed for control. The metadata is redundantly stored in the memory of the primary node and the memory of the secondary node.

公开(公告)号：US11599297B2

公开(公告)日：2023-03-07

申请号：US17477308

申请日：2021-09-16

Applicant: Hitachi, Ltd.

Inventor： Hideyuki Koseki ,  Hiroki Fujii ,  Akira Deguchi ,  Akira Yamamoto

IPC: G06F11/07 ,  G06F3/06 ,  G06F11/10

Abstract: The efficiency of the maintenance of a storage apparatus including a plurality of flash drives can be enhanced.
In a storage apparatus including a plurality of SSDs and a CPU, the CPU specifies, based on lifetimes of the SSDs depending on amounts of data written to the SSDs, the SSD to be replaced on a scheduled maintenance date, gives notice of the SSD specified to be replaced, and copies data in the SSD to be replaced to another SSD by the scheduled maintenance date on which the replacement is to be performed.

公开(公告)号：US11487431B2

公开(公告)日：2022-11-01

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.