公开(公告)号：US20230022502A1

公开(公告)日：2023-01-26

申请号：US17693169

申请日：2022-03-11

申请人： Hitachi, Ltd.

发明人： Soichi WATANABE ,  Akira DEGUCHI ,  Kazuei HIRONAKA

IPC分类号： G06F3/06

摘要： It is possible to reduce analysis cost of a management system.
The management system includes a CPU and manages one or more storage devices that provide, to a higher-level device, one or more volumes for inputting and outputting data. The CPU is configured to collect performance information of the volume from the storage device at a predetermined first time interval and detect a QoS violation of the performance information of the volume at a second time interval longer than the first time interval.

公开(公告)号：US20190129971A1

公开(公告)日：2019-05-02

申请号：US16122907

申请日：2018-09-06

申请人： Hitachi, Ltd.

发明人： Kazuei HIRONAKA ,  Akira YAMAMOTO ,  Tomohiro KAWAGUCHI

IPC分类号： G06F17/30

摘要： A storage system having a deduplication function that stores a plurality pieces of data having duplicated content as one piece of data in a storage device, the storage system includes a processor and a controller including a memory, in which the controller includes a deduplication processing/address conversion unit which creates a first volume corresponding to an external device that transmits a write request and a read request and a second volume corresponding to the storage device, and converts an address of data deduplicated between the first volume and the second volume, and a deduplication determination unit which investigates a duplication level of each area of the first volume, and determines whether deduplication for each area is necessary, and the controller performs access control to the storage device based on the determination as to whether the deduplication is necessary.

公开(公告)号：US20170123679A1

公开(公告)日：2017-05-04

申请号：US15128089

申请日：2014-04-22

申请人： HITACHI, LTD.

发明人： Yoshihiro YOSHII ,  Kazuei HIRONAKA ,  Akira YAMAMOTO ,  Norio SHIMOZONO

IPC分类号： G06F3/06 ,  G06F12/0802

CPC分类号： G06F3/0608 ,  G06F3/06 ,  G06F3/0619 ,  G06F3/0661 ,  G06F3/0685 ,  G06F12/04 ,  G06F12/0802 ,  G06F12/0804 ,  G06F12/0868 ,  G06F12/1009 ,  G06F2212/1016 ,  G06F2212/1024 ,  G06F2212/262 ,  G06F2212/312 ,  G06F2212/401 ,  G06F2212/60

摘要： A storage system is adapted for efficiency by defining beforehand a first size, which is the maximum data that can be read at one time, a second size, which is equal to or less than the first size, and a third size, which is a factor of the first size. A controller provides a virtual volume comprising a plurality of virtual pages. Upon receiving a write request, the controller allocates a pool area comprising a plurality of stripes of the first size, stores the write request data in a cache, and when writing the data stored in the cache to the storage device, compresses the data in accordance with the third size unit, selects a storage area in accordance with the second size unit, and writes the compressed data to the selected second size storage area sequentially from the start address of a free area without leaving spaces therebetween.

公开(公告)号：US20240126880A1

公开(公告)日：2024-04-18

申请号：US18119975

申请日：2023-03-10

申请人： Hitachi, Ltd.

发明人： Kazuei HIRONAKA ,  Akira DEGUCHI

IPC分类号： G06F21/56

CPC分类号： G06F21/566 ,  G06F2221/034

摘要： A storage device receives an access request specifying one of one or more LDEVs (one or more logical volumes provided to one or more hosts) from one host. In response to the access request, the storage device accesses a page allocated to an access destination area of the LDEV among a plurality of pages (plurality of logical storage areas that can be allocated to one or more LDEVs). The storage device or a storage device management system identifies, based on management information including information representing a write status characteristic for each of the plurality of pages, a mark target page as a low-write frequency page where a certain number or more of writes have occurred during a certain period of time and checks the presence or absence of a ransomware attack possibility that the number of the mark target pages is equal to or greater than a threshold.

公开(公告)号：US20220091790A1

公开(公告)日：2022-03-24

申请号：US17190145

申请日：2021-03-02

申请人： HITACHI, LTD.

发明人： Kenta SATO ,  Kazuei HIRONAKA ,  Akira DEGUCHI

IPC分类号： G06F3/06

摘要： A storage apparatus includes a processor and a memory. The processor provides a plurality of logical volumes each allowing input and output of data, and processes each data input to and output from a storage device via the logical volume. The processor acquires operational data associated with each of the plurality of logical volumes, and transmits the acquired operational data to a source of a operational data request. The processor adjusts, for each of the logical volumes, accuracy of the operational data to be acquired from each of the logical volumes, according to a status of each of the logical volumes.

公开(公告)号：US20190205044A1

公开(公告)日：2019-07-04

申请号：US16332079

申请日：2017-01-10

申请人： HITACHI, LTD.

发明人： Tomohiro KAWAGUCHI ,  Ai SATOYAMA ,  Kazuei HIRONAKA ,  Akira DEGUCHI

IPC分类号： G06F3/06

CPC分类号： G06F3/0619 ,  G06F3/06 ,  G06F3/064 ,  G06F3/0689

摘要： A method for restoring lost data due to a failure of a storage drive is provided, including: selecting a first logical area of a first storage drive that is failed; specifying a first logical area line that includes the first logical area and logical area blocks of a different storage drive and stores a data set having a redundant configuration capable of restoring lost internal data; selecting, from the first logical area line, one or more second logical areas to be accessed for restoring data of the first logical area; and for each of one or more second storage drives that provides the one or more second logical areas respectively, issuing a data storage information request inquiring whether valid data is stored after designating the second logical areas.

公开(公告)号：US20150363134A1

公开(公告)日：2015-12-17

申请号：US14124127

申请日：2013-03-04

申请人： Hitachi, Ltd.

发明人： Kazuei HIRONAKA ,  Sadahiro SUGIMOTO ,  Shigeo HOMMA

IPC分类号： G06F3/06

CPC分类号： G06F3/0641 ,  G06F3/061 ,  G06F3/0626 ,  G06F3/065 ,  G06F3/067 ,  G06F3/0683 ,  G06F12/0868 ,  H04L67/1097

摘要： 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.

摘要翻译： 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：US20230305728A1

公开(公告)日：2023-09-28

申请号：US18119480

申请日：2023-03-09

申请人： Hitachi, Ltd.

发明人： Kenta SATO ,  Kazuei HIRONAKA ,  Akira DEGUCHI

IPC分类号： G06F3/06

CPC分类号： G06F3/0647 ,  G06F3/0604 ,  G06F3/067

摘要： A processor repeatedly collects integrated management information related to a storage apparatus and including performance data indicating an operation status of the storage apparatus that stores data, and stores the performance data in an performance data temporary storage area. In addition, the processor analyzes the integrated management information, and determines the importance level indicating the degree of the influence of the performance data stored in the performance data temporary storage area on the analysis process of analyzing the performance data. The processor migrates the performance data stored in the performance data temporary storage area to one of the plurality of long-term storage areas having different characteristics based on the importance level.

公开(公告)号：US20180173632A1

公开(公告)日：2018-06-21

申请号：US15899659

申请日：2018-02-20

申请人： Hitachi, Ltd.

发明人： Sadahiro SUGIMOTO ,  Akira YAMAMOTO ,  Kazuei HIRONAKA

IPC分类号： G06F12/0864 ,  G06F11/10 ,  G06F12/0804 ,  G06F12/0868 ,  G06F12/0871 ,  G06F12/16 ,  G06F3/06

CPC分类号： G06F12/0864 ,  G06F3/06 ,  G06F11/1096 ,  G06F12/0804 ,  G06F12/0868 ,  G06F12/0871 ,  G06F12/16 ,  G06F2212/1032 ,  G06F2212/1044 ,  G06F2212/222 ,  G06F2212/262 ,  G06F2212/283 ,  G06F2212/312 ,  G06F2212/401

摘要： 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.

公开(公告)号：US20160342545A1

公开(公告)日：2016-11-24

申请号：US15114573

申请日：2014-02-12

申请人： HITACHI, LTD.

发明人： Masahiro ARAI ,  Akifumi SUZUKI ,  Mitsuhiro OKADA ,  Yuji ITO ,  Kazuei HIRONAKA ,  Satoshi MORISHITA ,  Norio SHIMOZONO

IPC分类号： G06F13/28 ,  G06F11/07 ,  G06F13/16 ,  G06F13/42 ,  G06F3/06 ,  G06F12/0868

CPC分类号： G06F13/28 ,  G06F3/061 ,  G06F3/0638 ,  G06F3/0656 ,  G06F3/0659 ,  G06F3/0683 ,  G06F3/0689 ,  G06F11/0727 ,  G06F11/0751 ,  G06F11/0772 ,  G06F12/0868 ,  G06F13/1673 ,  G06F13/4282 ,  G06F2212/1016 ,  G06F2212/401 ,  G06F2213/0026

摘要： A data memory device has a command transfer direct memory access (DMA) engine configured to obtain a command that is generated by an external apparatus to give a data transfer instruction from a memory of the external apparatus; obtain specifics of the instruction; store the command in a command buffer; obtain a command number that identifies the command being processed; and activate a transfer list generating DMA engine by transmitting the command number depending on the specifics of the instruction of the command. The transfer list generating DMA engine is configured to: identify, based on the command stored in the command buffer, an address in the memory to be transferred between the external apparatus and the data memory device; and activate the data transfer DMA engine by transmitting the address to the data transfer DMA engine which then transfers the data to/from the memory based on the received address.

摘要翻译： 数据存储装置具有命令传送直接存储器存取（DMA）引擎，其被配置为获得由外部装置生成的命令，以从外部装置的存储器提供数据传送指令; 获取该指令的细节; 将命令存储在命令缓冲区中; 获取标识正在处理的命令的命令编号; 并且通过根据该命令的指令的细节发送命令号码来激活生成DMA引擎的传送列表。 传输列表生成DMA引擎被配置为：基于存储在命令缓冲器中的命令，识别要在外部设备和数据存储设备之间传送的存储器中的地址; 并通过将地址发送到数据传输DMA引擎来激活数据传输DMA引擎，该数据传输DMA引擎基于接收的地址将数据传送到/从存储器传送数据。