公开(公告)号：US20180018231A1

公开(公告)日：2018-01-18

申请号：US15548635

申请日：2015-02-25

Applicant: HITACHI, LTD.

Inventor： Mitsuhiro OKADA ,  Akifumi SUZUKI ,  Satoshi MORISHITA ,  Akira YAMAMOTO

IPC: G06F11/10 ,  G06F3/06

Abstract: A storage unit includes a plurality of storage devices that form a RAID group, that are coupled to the same bus, and that communicate with each other. Each of the plurality of storage devices includes a device controller and a storage medium. The plurality of storage devices store each of data and parities generated on the basis of the data, the data and the parities being included in RAID stripes. A first device controller of a first storage device included in the RAID group transmits, to the plurality of storage devices included in the RAID group other than the first storage device, an instruction to transfer the data and/or the parities included in the RAID stripes and restores the data or the parity corresponding to the first storage device of the RAID stripes on the basis of the transferred data and the transferred parities.

公开(公告)号：US20180004676A1

公开(公告)日：2018-01-04

申请号：US15540681

申请日：2015-01-13

Applicant: Hitachi, Ltd.

Inventor： Miho IMAZAKI ,  Akira YAMAMOTO ,  Yusuke NONAKA ,  Tomohiro YOSHIHARA ,  Shunji KAWAMURA

IPC: G06F12/109 ,  G06F11/10

CPC classification number: G06F12/109 ,  G06F3/061 ,  G06F3/064 ,  G06F3/0665 ,  G06F3/0688 ,  G06F11/1076 ,  G06F12/0284 ,  G06F2212/1008 ,  G06F2212/262 ,  G06F2212/657

Abstract: A storage system manages correspondence relationships between physical addresses and logical addresses inside a storage device, as well as logical spaces provided by a plurality of storage devices, and when a determination is made as to whether first data and second data are stored in the same storage device in a case in which the first data and the second data are exchanged inside a logical space, and the determination is found to be affirmative, the storage device replaces the logical address corresponding to the first data with the logical address corresponding to the second data without changing the physical address of the physical area in which the first data is stored and the physical address of the physical area in which the second data is stored.

公开(公告)号：US20170220285A1

公开(公告)日：2017-08-03

申请号：US15039983

申请日：2014-03-07

Applicant: HITACHI, LTD.

Inventor： Naoko IKEGAYA ,  Nobuhiro MAKI ,  Akira YAMAMOTO

IPC: G06F3/06

CPC classification number: G06F3/0631 ,  G06F3/061 ,  G06F3/0662 ,  G06F3/0665 ,  G06F3/067 ,  G06F3/0683

Abstract: In a scale-out type storage in which multiple physical storage systems are provided collectively as a single virtual storage system, a logical path is established between the host computer and the virtual storage system so that input/output performance of the storage is not deteriorated, wherein during allocation of a volume to the virtual storage system, if a logical CU establishing a logical path to a volume is unallocated, a logical CU and a volume is generated to a storage system having either a small number of allocated logical CUs or a small amount of used storage capacity. On the other hand, if there is a storage system having a logical CU already allocated thereto, a volume is generated in that storage system.

公开(公告)号：US20160259697A1

公开(公告)日：2016-09-08

申请号：US14424734

申请日：2014-06-02

Applicant: HITACHI, LTD.

Inventor： Masanori TAKADA ,  Akira YAMAMOTO

IPC: G06F11/20 ,  G06F12/08

CPC classification number: G06F11/2094 ,  G06F9/4401 ,  G06F12/0868 ,  G06F12/16 ,  G06F2212/1024 ,  G06F2212/1032 ,  G06F2212/313 ,  G06F2212/7201 ,  Y02D10/13

Abstract: Methods are in use for saving data stored in a volatile memory to a non-volatile memory during a power outage in a storage system so that the data on the volatile memory is not lost. In the related art, the entire data saved to the non-volatile memory is read and written in the volatile memory when electric power supply is restored. Then, an operation as the storage system is resumed and an access request from a host is accepted. In the related art, the data saved in the non-volatile memory has to be read in entirety, and thus time is required until resumption of the access request acceptance and availability is impeded. According to the invention, a cache directory and cache data are saved to a non-volatile memory during a power outage and the cache directory is copied from the non-volatile memory to a volatile memory, a storage location of the data whose storage location in the cache directory prior to the saving is the volatile memory is changed to the non-volatile memory, and host I/O processing is initiated when electric power is restored in order to address this problem.

Abstract translation: 在存储系统中的停电期间，使用方法将存储在易失性存储器中的数据保存到非易失性存储器，使得易失性存储器上的数据不会丢失。 在相关技术中，当电源恢复时，保存到非易失性存储器的整个数据被读取并写入易失性存储器。 然后，恢复作为存储系统的操作，并接受来自主机的访问请求。 在相关技术中，保存在非易失性存储器中的数据必须被全部读取，因此需要时间，直到恢复访问请求的接受和可用性受到阻碍。 根据本发明，在停电期间，高速缓存目录和高速缓存数据被保存到非易失性存储器，并且将高速缓存目录从非易失性存储器复制到易失性存储器，其存储位置在 保存前的缓存目录是将易失性存储器更改为非易失性存储器，并且在恢复电力时启动主机I / O处理，以解决此问题。

公开(公告)号：US20160004642A1

公开(公告)日：2016-01-07

申请号：US14770567

申请日：2013-12-12

Applicant: Hitachi, Ltd.

Inventor： Sadahiro SUGIMOTO ,  Akira YAMAMOTO ,  Kazuei HIRONAKA

IPC: G06F12/08

CPC classification number: G06F12/0864 ,  G06F3/06 ,  G06F11/1096 ,  G06F12/0804 ,  G06F12/0868 ,  G06F12/0871 ,  G06F12/16 ,  G06F2212/1032 ,  G06F2212/1044 ,  G06F2212/262 ,  G06F2212/283 ,  G06F2212/312 ,  G06F2212/401

Abstract: The storage device of the present invention provides a decompression VOL having no corresponding relationship (mapping) with a final storage media to a superior device, and receives accesses from the superior device to the decompression VOL. Then, data written into the decompression VOL is compressed on-line in a cache memory, and the compressed data is mapped to a compression VOL which is a volume mapped to a final storage media. At the same time, by maintaining and managing a mapping information between an area in the decompression VOL where data has been written and a location in the compression VOL to which compressed data of the relevant data is mapped, when a read request is received from a superior device regarding the decompression VOL, the storage device converts a location information in the decompression VOL designated by the read request to a location information of the final storage media.

Abstract translation: 本发明的存储装置向上级装置提供与最终存储介质没有对应关系（映射）的解压缩VOL，并且从上位装置接收到解压缩VOL的访问。 然后，写入解压缩VOL的数据在高速缓冲存储器中在线压缩，并且压缩数据被映射到映射到最终存储介质的卷的压缩VOL。 同时，通过维护和管理已经写入数据的解压缩VOL中的区域与映射相关数据的压缩数据的压缩VOL中的位置之间的映射信息，当从 关于解压缩VOL的优越装置，存储装置将由读取请求指定的解压缩VOL中的位置信息转换为最终存储介质的位置信息。

公开(公告)号：US20150100728A1

公开(公告)日：2015-04-09

申请号：US14568152

申请日：2014-12-12

Applicant: HITACHI, LTD.

Inventor： Akira YAMAMOTO ,  Sadahiro SUGIMOTO ,  Akihiko ARAKI ,  Masayuki YAMAMOTO

IPC: G06F3/06

CPC classification number: G06F3/0631 ,  G06F3/0604 ,  G06F3/0616 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/0647 ,  G06F3/0665 ,  G06F3/0688 ,  G06F3/0689 ,  G06F12/0246 ,  G06F2212/7204 ,  G06F2212/7208 ,  G11C16/349

Abstract: A storage system 100, which has a plurality of flash packages 230, has a function for minimizing the imbalance of the number of deletions of each block inside the flash package 230 and a block-unit capacity virtualization function, and efficiently manifests lessening of the imbalance of the number of deletions and reduction in the data storage capacity for the entire storage system 100 by having functions for calculating the number of deletions and the data occupancy of each flash package 230, and for transferring data between the flash packages 230 on the basis of the values of these number of deletions and data occupancy.

Abstract translation: 具有多个闪存封装230的存储系统100具有用于最小化闪存封装230内的每个块的缺失数量的不平衡的功能和块单元容量虚拟化功能，并且有效地显示不平衡的减少 通过具有用于计算每个闪存封装230的删除次数和数据占用的功能以及用于基于闪存封装230在闪存封装230之间传送数据的功能来减少整个存储系统100的数据存储容量 这些数字的数量和数据占用的数值。

公开(公告)号：US20140108713A1

公开(公告)日：2014-04-17

申请号：US14132089

申请日：2013-12-18

Applicant: Hitachi, Ltd.

Inventor： Akira YAMAMOTO ,  Sadahiro SUGIMOTO ,  Akihiko ARAKI ,  Masayuki YAMAMOTO

IPC: G06F12/02

CPC classification number: G06F3/0631 ,  G06F3/0604 ,  G06F3/0616 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/0647 ,  G06F3/0665 ,  G06F3/0688 ,  G06F3/0689 ,  G06F12/0246 ,  G06F2212/7204 ,  G06F2212/7208 ,  G11C16/349

Abstract: A storage system 100, which has a plurality of flash packages 230, has a function for minimizing the imbalance of the number of deletions of each block inside the flash package 230 and a block-unit capacity virtualization function, and efficiently manifests lessening of the imbalance of the number of deletions and reduction in the data storage capacity for the entire storage system 100 by having functions for calculating the number of deletions and the data occupancy of each flash package 230, and for transferring data between the flash packages 230 on the basis of the values of these number of deletions and data occupancy.

Abstract translation: 具有多个闪存封装230的存储系统100具有用于最小化闪存封装230内的每个块的缺失数量的不平衡的功能和块单元容量虚拟化功能，并且有效地显示不平衡的减少 通过具有用于计算每个闪存封装230的删除次数和数据占用的功能以及用于基于闪存封装230在闪存封装230之间传送数据的功能来减少整个存储系统100的数据存储容量 这些数字的数量和数据占用的数值。

公开(公告)号：US20140006726A1

公开(公告)日：2014-01-02

申请号：US13938572

申请日：2013-07-10

Applicant: HITACHI LTD.

Inventor： Akira YAMAMOTO ,  Noboru MORISHITA ,  Hideo SAITO ,  Yoshiaki EGUCHI ,  Masayuki YAMAMOTO

IPC: G06F3/06

CPC classification number: G06F3/0644 ,  G06F3/0608 ,  G06F3/0617 ,  G06F3/062 ,  G06F3/0647 ,  G06F3/0665 ,  G06F3/067 ,  G06F3/0683

Abstract: A storage system includes a first storage apparatus and a second storage apparatus. The first storage apparatus includes a capacity pool that is partitioned into multiple pool pages and includes a storage area of an external logical volume provided by at least one storage apparatus. The second storage apparatus provides first virtual volume which is a virtual logical volume comprising multiple first virtual areas. In a case of receiving a write request from the computer to a virtual area in the first virtual volume to which a page is not allocated, an unallocated pool page of the external logical volume is allocated to the virtual area. An authority to allocate the unallocated pool page of the external logical volume is assigned to the first storage apparatus.

Abstract translation: 存储系统包括第一存储装置和第二存储装置。 第一存储装置包括划分为多个池页面的容量池，并且包括由至少一个存储装置提供的外部逻辑卷的存储区域。 第二存储装置提供第一虚拟卷，其是包括多个第一虚拟区域的虚拟逻辑卷。 在从计算机接收到未分配页面的第一虚拟卷中的虚拟区域的写入请求的情况下，将外部逻辑卷的未分配的池页面分配给虚拟区域。 分配外部逻辑卷的未分配池页面的权限被分配给第一存储设备。

公开(公告)号：US20220318108A1

公开(公告)日：2022-10-06

申请号：US17469740

申请日：2021-09-08

Applicant: Hitachi, Ltd.

Inventor： Akira YAMAMOTO ,  Hiroto EBARA ,  Yoshinori OHIRA

IPC: G06F11/20 ,  G06F3/06

Abstract: A compound storage system includes a plurality of storage boxes each having a plurality of storage units, and a plurality of real storage systems that process data inputted/outputted to/from the storage units. When a failure occurs at a storage unit 160, the real storage system 100 having the control right executes the recovery process of recovering data stored in a storage area allocated to a logical volume, and the real storage system 100 having the allocation authority executes the recovery process of recovering data stored in a storage area not allocated to the logical volume.

公开(公告)号：US20210294742A1

公开(公告)日：2021-09-23

申请号：US17017934

申请日：2020-09-11

Applicant: Hitachi, Ltd.

Inventor： Akira YAMAMOTO ,  Ryosuke TATSUMI ,  Yoshinori OHIRA ,  Junji OGAWA

IPC: G06F12/0804 ,  G06F3/06

Abstract: 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.