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公开(公告)号：US20250077360A1
公开(公告)日：2025-03-06
申请号：US18601179
申请日：2024-03-11
Applicant: Hitachi, Ltd.
Inventor： Mitsuo HAYASAKA , Yuto KAMO , Akira YAMAMOTO
Abstract: When the latest data and a backup of the latest data are infected, the data is recovered from the backup older than the data. Therefore, it is necessary to eliminate a difference from the latest data, leading to loss of business opportunities. A data recovery system that recovers data stored in a storage system includes a storage device that holds original data, an analyzing server that holds a copy of the original data, and generates formatted data by formatting the copy data for analysis, a managing server that holds the copy data and data history management information storing a history of the formatted data, and a data recovery unit that refers to the data history management information, selects the copy data or the formatted data as recovery data, and recovers the data from the selected recovery data when a security threat is detected in the data.
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公开(公告)号：US20250053575A1
公开(公告)日：2025-02-13
申请号：US18597755
申请日：2024-03-06
Applicant: Hitachi, Ltd.
Inventor： Miho KOBAYASHI , Soichi WATANABE , Mitsuo HAYASAKA , Shimpei NOMURA
IPC: G06F16/27
Abstract: A support device and method capable of supporting construction of an optimal secondary usage environment for data are proposed.
A plurality of construction candidate plans for a secondary usage environment including a copy method for copying the data between a designated copy source site and a designated copy destination site of the data are calculated. A time and a cost required for copying the data and an operation cost of the secondary usage environment to be constructed are calculated for each of the calculated construction candidate plans,, and the plurality of construction candidate plans based on a calculation result together with evaluations thereof are presented.-
公开(公告)号：US20240104064A1
公开(公告)日：2024-03-28
申请号：US18176517
申请日：2023-03-01
Applicant: Hitachi, Ltd.
Inventor： Yuto KAMO , Mitsuo HAYASAKA , Norio SHIMOZONO
IPC: G06F16/182 , G06F3/06
CPC classification number: G06F16/183 , G06F3/0607 , G06F3/0617 , G06F3/0658 , G06F3/0683
Abstract: The present invention makes it possible to maintain availability and scale out file performance, while suppressing costs. A unified storage has a plurality of controllers and a storage apparatus (storage device unit), and each of the plurality of controllers is equipped with one or more main processors (CPU) and one or more channel adapters (FE-I/F). Each main processor causes a block storage control program to operate and thereby process data inputted to and outputted from the storage apparatus, each channel adapter has a processor (CPU) that performs transmission and reception to and from a main processor after receiving an access request, and the processors in the plurality of channel adapters cooperate to cause a distributed file system to operate, and distributively store data, written as a file, to the plurality of controllers.
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公开(公告)号：US20240103935A1
公开(公告)日：2024-03-28
申请号：US18182724
申请日：2023-03-13
Applicant: Hitachi, Ltd.
Inventor： Akio SHIMADA , Mitsuo HAYASAKA
CPC classification number: G06F9/5094 , G06F11/3409 , G06F2209/501
Abstract: The CPU of the management node measures the power consumption of a computer node while causing the computer node to execute the power measurement benchmark that uses hardware whose resource is allocated to a program to be executed by the computer node, where the CPU is changing the use amount of the resource while causing the computer node to execute the power measurement benchmark. The CPU generates a power consumption model representing a relationship between an allocation amount of the resource to be allocated to the program and the power consumption on the basis of a measurement result obtained by measuring the power consumption.
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公开(公告)号：US20220374616A1
公开(公告)日：2022-11-24
申请号：US17688235
申请日：2022-03-07
Applicant: Hitachi, Ltd.
Inventor： Keiichi MATSUZAWA , Mitsuo HAYASAKA
IPC: G06F40/58 , G06F40/242
Abstract: To provide a sentence data management method and a sentence data management system in which sentence data and a provision of a regulation are associated and a risk of legal violation associated with outbound transmission of the sentence data is reduced. A sentence data management system includes a processor configured to convert a word string of a first document described using a first term into a word string described using a third term; convert a word string of an outbound-transmitted second document described using a second term into a word string described using the third term; compare the first document and the second document by using a comparison result between the word string and the word string as a comparison result between the word string and the word string; and check a possibility of violation to the regulation in outbound transmission to determine the outbound transmission of the second document.
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Patent Agency Ranking
公开(公告)号：US20220197527A1
公开(公告)日：2022-06-23
申请号：US17473804
申请日：2021-09-13
Applicant: Hitachi, Ltd.
Inventor： Shimpei NOMURA , Mitsuo HAYASAKA , Yuto KAMO
IPC: G06F3/06
Abstract: To attempt to reduce a processing load by making it unnecessary to perform a task of searching for similar data when a delta compression process is performed.
A storage system has a deduplication function of performing deduplication on a plurality of duplicate pieces of the data and a delta compression function of storing differences between a plurality of similar pieces of the data. When a write request to update the stored data is received, in a case where the deduplication has been performed on the data before being updated according to the write request, and the data after being updated does not share duplicate data with second data, a processor of the storage system performs the delta compression of generating and storing a difference between the data before being updated and the data after being updated.-
公开(公告)号：US20210303158A1
公开(公告)日：2021-09-30
申请号：US17020111
申请日：2020-09-14
Applicant: HITACHI, LTD.
Inventor： Shimpei NOMURA , Mitsuo HAYASAKA , Masanori TAKATA
IPC: G06F3/06
Abstract: A processor of a NAS performs a calling process of a local file system based on an operation request of a file from an application, the local file system processes the operation request of the file, an IO Hook program performs an update process of state management information of the file based on input information with respect to the local file system related to the operation request or an operation content, and a file virtualization program performs a management process of the file between the NAS and a CAS based on the state management information.
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8.发明申请公开(公告)号：US20200322165A1
公开(公告)日：2020-10-08
申请号：US16811044
申请日：2020-03-06
Applicant: Hitachi, Ltd.
Inventor： Shimpei NOMURA , Mitsuo HAYASAKA , Jun NEMOTO
Abstract: Provided is a distributed ledger device, aiming at easily and appropriately determining a status of operational processing on a distributed ledger in a certain distributed ledger device at another distributed ledger device. A BC node in a BC system including a plurality of BC nodes that manage a distributed ledger for a predetermined target transaction, the BC node including: the storage device; and the processor, in which the storage device stores the distributed ledger, and the processor, when executing processing relating to the distributed ledger, transmits content information indicating contents of the processing to be managed by another BC node that manages the distributed ledger. The processor may transmit an instruction to register the content information in another distributed ledger managed by the plurality of BC nodes that manage the distributed ledger.
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公开(公告)号：US20200057563A1
公开(公告)日：2020-02-20
申请号：US16081389
申请日：2016-04-05
Applicant: Hitachi, Ltd.
Inventor： Takeru CHIBA , Shintaro ITO , Mitsuo HAYASAKA
Abstract: Even if a physical storage device is extended in units smaller than physical storage devices configuring one RAID group, redundancy is secured.When d+r pieces of physical storage devices are connected to the computer by connecting r pieces of physical storage devices to the computer, a computer: adds v×r pieces of logical chunks; adds n×v pieces of physical storage areas in each additional storage device; changes mapping information to mapping information that associates n pieces of physical storage areas with each of v×(d+r) pieces of logical chunks under a mapping condition; in response to a write request of user data, creates redundant data that is based on the user data; determines a first logical chunk corresponding to the write request; and respectively writes n pieces of element data including the user data and the redundant data into n pieces of physical storage areas corresponding to the first logical chunk, based on the mapping information.
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公开(公告)号：US20180267856A1
公开(公告)日：2018-09-20
申请号：US15762862
申请日：2016-01-07
Applicant: HITACHI, LTD.
Inventor： Mitsuo HAYASAKA , Keiichi MATSUZAWA
CPC classification number: G06F11/1076 , G06F3/061 , G06F3/0619 , G06F3/0631 , G06F3/064 , G06F3/067
Abstract: A distributed storage system includes a plurality of storage nodes including: a storage device for storing data in such a way that the data can be written thereto and read therefrom; a memory in which a software program is recorded; and a CPU for executing the software program. The memory stores group management information in which a group configured with a plurality of storage nodes and the storage nodes that configure the group are associated with each other and recorded. The CPU converts data into a plurality of data blocks so that the data is redundant at a predetermined data protection level, and stores the data blocks into each of a plurality of storage nodes belonging to the same group based on the group management information.
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