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公开(公告)号：US20230297265A1
公开(公告)日：2023-09-21
申请号：US17945730
申请日：2022-09-15
Applicant: Hitachi, Ltd.
Inventor： Hideyuki KOSEKI , Akira DEGUCHI , Masahiro ARAI
IPC: G06F3/06
CPC classification number: G06F3/065 , G06F3/0683 , G06F3/0635 , G06F3/0604
Abstract: An administrative terminal receives designation of generation target data and of a generation destination storage device and identifies data similar to the target data. The terminal calculates a first predicted time expected for transmitting the target data from a storage device holding the target data to the generation destination storage device, and a second predicted time expected to be required for a second transmission process of transmitting the similar data from an object storage service to the generation destination storage device and of transmitting difference data between the target data and the similar data from the storage device holding the target data to the generation destination storage device. If the second predicted time is shorter than the first predicted time, the administrative terminal performs the second transmission process to transmit the similar data and the difference data to the generation destination storage device to generate the generation target data therein.
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公开(公告)号：US20240020206A1
公开(公告)日：2024-01-18
申请号：US18115912
申请日：2023-03-01
Applicant: Hitachi, Ltd.
Inventor： Masahiro ARAI , Akira DEGUCHI , Hideyuki KOSEKI
IPC: G06F11/14
CPC classification number: G06F11/1469 , G06F11/1464 , G06F11/1451 , G06F2201/84
Abstract: In a storage system that is connected via networks to a cloud system, which provides an object store, and backs up backup data of a predetermined volume as an object to the object store, the storage system includes a processor, and the processor is configured to determine whether the storage system stores a snapshot associated with a volume at a first point in time to be restored, and restore the volume at the first point in time using the snapshot when it is determined that the storage system stores the snapshot.
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公开(公告)号：US20190198063A1
公开(公告)日：2019-06-27
申请号：US16329657
申请日：2017-04-19
Applicant: Hitachi, Ltd.
Inventor： Masahiro TSURUYA , Masahiro ARAI , Akifumi SUZUKI , Shimpei NOMURA
CPC classification number: G11C7/04 , G06F12/16 , G11C11/5628 , G11C16/26
Abstract: A system including a first storage drive and a superior device superior to the first storage drive, wherein the superior device specifies a first allowable environmental temperature that makes the remaining lifetime of the first storage drive longer than the remaining operation schedule period of the first storage drive, and controls an environmental temperature adjusting device that adjusts the environmental temperature of the first storage drive on the basis of the first allowable environmental temperature.
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公开(公告)号：US20180067850A1
公开(公告)日：2018-03-08
申请号：US15551312
申请日：2015-02-27
Applicant: HITACHI, LTD.
Inventor： Atsushi KAWAMURA , Masahiro ARAI , Kazuhisa FUJIMOTO
CPC classification number: G06F12/0246 , G06F3/064 , G06F3/0646 , G06F3/0647 , G06F3/0652 , G06F3/0679 , G06F12/00 , G06F12/02 , G06F12/16 , G11C16/16 , G11C16/3495
Abstract: A write frequency of a non-volatile memory is determined at a fine granularity while suppressing consumption of the volatile memory. When it is determined that a copy of specified data from a specified physical storage area to another physical storage area is to be executed, a controller reads the specified data and specified write frequency information, selects a write destination physical storage area group from a plurality of physical storage area groups based on the specified write frequency information and classification information, selects a write destination physical storage area from the write destination physical storage area group, changes the specified write frequency information, writes the specified data to the write destination physical storage area, writes the changed specified write frequency information to the non-volatile memory, and updates translation information based on the write destination physical storage area group and the write destination physical storage area.
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公开(公告)号：US20160342545A1
公开(公告)日：2016-11-24
申请号：US15114573
申请日：2014-02-12
Applicant: HITACHI, LTD.
Inventor： Masahiro ARAI , Akifumi SUZUKI , Mitsuhiro OKADA , Yuji ITO , Kazuei HIRONAKA , Satoshi MORISHITA , Norio SHIMOZONO
CPC classification number: 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
Abstract: 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.
Abstract translation: 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。
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Patent Agency Ranking
公开(公告)号：US20250021246A1
公开(公告)日：2025-01-16
申请号：US18599454
申请日：2024-03-08
Applicant: Hitachi, Ltd.
Inventor： Masahiro ARAI , Akira Deguchi , Kazuei Hironaka
Abstract: When executing a data transfer process between one volume and a second storage unit, a computer resource activation unit activates one or more computer resources that executes the data transfer process, and mounts one common volume as a transfer source or a transfer destination in the data transfer process on any of the activated computer resources. A region allocation unit allocates a part of the data transfer process to the computer resource for each storage region. The computer resource executes the part of the data transfer process between the second storage unit and the storage region allocated to the computer resource in the one common volume.
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公开(公告)号：US20240111638A1
公开(公告)日：2024-04-04
申请号：US18119336
申请日：2023-03-09
Applicant: Hitachi, Ltd.
Inventor： Masahiro ARAI , Akira DEGUCHI , Hideyuki KOSEKI
CPC classification number: G06F11/1469 , G06F11/1464 , G06F11/2023
Abstract: In failover processing, a CPU restores data stored in a first volume to a second volume of a storage system, associates a unique ID of the first volume with the second volume, and stores the unique ID associated therewith in a memory. After the failover processing is completed, the CPU manages an update difference management bitmap indicating an updated content with respect to data stored in the second volume. The CPU transmits, in failback processing, update data updated after the failover processing among the data stored in the second volume to the first volume identified by the unique ID associated with the second volume based on the update difference management bitmap.
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公开(公告)号：US20180018113A1
公开(公告)日：2018-01-18
申请号：US15546041
申请日：2015-05-13
Applicant: Hitachi, Ltd.
Inventor： Hideyuki KOSEKI , Masahiro ARAI
IPC: G06F3/06
Abstract: A storage device relating to one aspect of the present invention has a storage controller and multiple memory devices. The memory devices manage capacity equivalent to the size of a memory space provided to the storage controller among regions of a non-volatile storage medium as logical capacity and manage the remaining regions as reserve capacity. When a device controller determines that a portion of the memory regions in the non-volatile storage medium is in an unusable state, the device controller notifies the storage controller of the size of the memory regions in the unusable state. On the basis of a policy set by the memory device, the storage controller determines the reduction amount of the logical capacity and the reserve capacity and notifies the memory device of the determined reduction amount of the logical capacity.
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公开(公告)号：US20140104967A1
公开(公告)日：2014-04-17
申请号：US14053094
申请日：2013-10-14
Applicant: HITACHI, LTD.
Inventor： Masahiro ARAI , Hiroshi HIRAYAMA , Masanori TAKADA , Hiroshi KANAYAMA , Hideaki FUKUDA
IPC: G11C7/10
CPC classification number: G11C7/10 , G06F13/28 , G06F13/4282 , G06F2213/0026
Abstract: A data transfer device that transfers data to a memory according to an instruction from a processor via a bus through which a response indicating completion of data writing in the memory is not sent back, comprises an inter-memory data transfer control unit including an operation start trigger receiving unit, a parameter acquiring unit, a read unit, and a write unit. When the write unit detects switching of a write destination memory, the write unit confirms write completion as to the memory by a procedure different from writing. When a data transfer instructed by the processor is completed, the write unit confirms write completion as to the write destination memory at the end of the data transfer by the procedure different from writing. The inter-memory data transfer control unit notifies the processor of completion of an inter-memory data transfer based on the confirmation of the write completion.
Abstract translation: 一种数据传送装置，其根据来自处理器的指令将数据传送到存储器，所述总线通过该总线不发送指示在存储器中写入数据的响应的响应，所述存储器包括：存储器间数据传送控制单元，包括操作开始 触发接收单元，参数获取单元，读取单元和写入单元。 当写入单元检测到写入目的地存储器的切换时，写入单元通过与写入不同的过程来确认对存储器的写入完成。 当处理器指示的数据传输完成时，写入单元通过不同于写入的过程在数据传送结束时确认关于写入目的地存储器的写入完成。 存储器间数据传送控制单元基于写入完成的确认通知处理器完成存储器间数据传送。
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公开(公告)号：US20240354312A1
公开(公告)日：2024-10-24
申请号：US18243916
申请日：2023-09-08
Applicant: Hitachi, Ltd.
Inventor： Kazuei HIRONAKA , Masahiro ARAI , Akira DEGUCHI
CPC classification number: G06F16/27 , G06F11/1464 , G06F2201/84
Abstract: To back up stored data of a storage device installed on-premise to a storage service provided by a public cloud more reliably and efficiently. A storage system according to the invention includes a storage device having first storage logical volumes (LDEVs), and a storage device having second storage LDEVs. When stored data of a first LDEV and stored data of a second LDEV are synchronized with each other, network conditions in a transfer path from the storage device to the public cloud and in a transfer path from the storage device to the public cloud are observed. The first LDEV or the second LDEV is selected as a backup source based on the network conditions.
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