Hitachi, Ltd.

Hitachi Vantara Corporation

Shimpei Nomura

Mitsuo Hayasaka

Akifumi Suzuki

Masanori Takata

Yuto Kamo

Eiichi Inoue

Kazumasa Matsubara

Mitsuhiro Okada

Jun Nemoto

Masahiro Tsuruya

Satoshi Morishita

Masahiro Arai

Miho Kobayashi

Soichi Watanabe

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.

Support device and method

An information processing system including Application Platform capable of communicating with Edge1 connected to each other to be able to communicate each other, in which Application Platform includes a second processor, information on microservices and data possessed by Edge1, and performance information describing the performance of Edge1, and the second processor uses predetermined data to combine a plurality of predetermined microservices and causes Edge1 to execute them in a predetermined order. When executing the application, microservices and data are moved between Edge1 based on the information of the microservices and the data possessed by Edge1, and the performance information.

Information processing system and application services distribution method in information processing system

In a management node that manages a distributed file and object storage that accessibly manages a file used by an application, the distributed file and object storage is accessible to a file managed by a storage of another site, and a management node includes a processor, and the processor is configured to specify an access circumstance relating to a file by an application, and control caching by the distributed file and object storage of the own site with respect to the file managed by the storage of the other site used by the application, before the application is executed, based on the access circumstance.

Data control device, storage system, and data control method

An information processing system including Application Platform capable of communicating with Edgeconnected to each other to be able to communicate each other, in which Application Platform includes a second processor, information on microservices and data possessed by Edge, and performance information describing the performance of Edge, and the second processor uses predetermined data to combine a plurality of predetermined microservices and causes Edgeto execute them in a predetermined order. When executing the application, microservices and data are moved between Edgebased on the information of the microservices and the data possessed by Edge, and the performance information.

A file storage system configured to use a second storage system includes a first file system provided to an application, a first storage system in which a file is stored by the first file system, a processor, state management information storing a state of the file, a state information management unit that manages the state management information, and a file virtualization unit that manages files stored in the first storage system and the second storage system. The processor performs a calling process of the first file system based on an operation request of the file from the application. The first file system processes the operation request of the file. The state information management unit performs a state management information update process of the file based on input information with respect to the first file system related to the operation request, or an operation content.

File storage system and method for managing file storage system

When an operation request of a file is made, a first storage system performs an operation of the file stored in the first storage system on the basis of the operation request, describes, in an operation log, a counter value of a management information file, associated with the file on which the operation is to be performed, together with operation content with respect to the file, replies to the operation request, and updates the counter value of the management information file when the file stored in the first storage system is transferred to a second storage system.

File storage system and file management method by file storage system

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.

Distributed ledger device, distributed ledger system, and distributed ledger management method

Provided is an edge storage having a central processing unit (CPU). The edge storage is connected to another storage device capable of deduplicating and managing a data of a file in units of a predetermined chunk via a network, in which, when a data of a newly created file or an updated file is transferred to the other storage device, the CPU determines whether to transmit a difference portion to a core storage or to transmit a finger print of a difference chunk to the core storage, based on a size of the difference portion and a size of the finger print of the difference chunk which is a chunk including the difference portion and transmits the difference portion or the finger print to the core storage according to a determination result.

Storage device, computer system, and data transfer program for deduplication

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.

A data deduplication device reduces a processing load in deduplication. Storage target data includes a content including a plurality of blocks having a structure in which transaction data and a hash value of a preceding block are associated with each other. A storage includes a storage device and a processor, which (1) acquires a hash value associated with one or more blocks of a chunk including the block in the content, and specifies a fingerprint corresponding to the chunk based on the acquired one or more hash values of the block, (2) determines whether the fingerprint corresponding to the chunk is the same as a fingerprint of a chunk stored in the storage device, and (3) does not store the chunk in the storage device when it is determined to be the same, and stores the chunk in the storage device when it is determined to not be the same.

Data deduplication device, data deduplication method, and data deduplication program

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.

Control method of environmental temperature of storage drive

When a logical capacity of a nonvolatile semiconductor memory is increased, after a logical capacity which is allocated to a RAID group but unused is released, the RAID group is reconfigured to include the released logical capacity and the increased logical capacity. When the logical capacity of the nonvolatile semiconductor memory is reduced, after the reduced logical capacity is released from the RAID group, the RAID group is reconfigured with the released logical capacity.

Storage apparatus and distributed storage system

In technique for dividing ECC large in size, plural ECCs of different sizes are required to be managed and control over storage areas of NVM is intricate. In addition, a relatively reliable page (a minimum record unit) and a relatively unreliable page are determined beforehand depending upon which recording method is adopted. However, as dispersion exists in quality among NVMs, it may occur among NVMs that dispersion in an error bit count is great among pages of the same reliability. An NVM controller in a nonvolatile memory (NVM) module divides the ECCCW into N pieces (N: two or a larger integer) of ECCCW portions and records the N pieces of ECCCW portions in N pieces of storage areas out of plural storage areas in one or more NVMs configuring an NVM section.

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Tokyo, Japan

Shimpei Nomura