Hitachi, Ltd.

Shunji Kawamura

Yoshiaki Eguchi

Takashige Iwamura

Yasutomo Yamamoto

Takahiro Yamamoto

Kazuhisa Fujimoto

Hiroaki Akutsu

Atsushi Kawamura

Kota Yasunaga

Yasuo Watanabe

Hisao Homma

Junji Ogawa

Tomohiro Kawaguchi

Kazuyoshi Serizawa

Tomohiro Yoshihara

Yasuyuki Nagasoe

Tetsuya Maruyama

Naoto Matsunami

Hideo Saito

Manabu Kitamura

Takao Sato

Norio Shimozono

Shintaro Ito

Sadahiro Sugimoto

Hiroshi Nasu

Takuji Ogawa

Akira Yamamoto

Hiroshi Arakawa

Yusuke Nonaka

Kenta Ninose

Yoshinori Ohira

Kenji Muraoka

Hidenori Suzuki

Noboru Morishita

Azusa Jin

Masaaki Tanizaki

Kunihiko Nashimoto

Miho Imazaki

Masanao Tsuboki

Taminori Tomita

Tetsuhiro Hatogai

Kay Kitahara

Aya Obinata

Natsuki Tsukano

A computer system including a plurality of systems, in which the plurality of systems include a plurality of provision systems that provide data and a platform system that controls access to the data, the platform system receives, from a user, an acquisition request including a data acquisition condition, a quality condition, and a provider condition related to providers of data provided by the provision systems, and in a case where data satisfying the data acquisition condition satisfies the quality condition and a provider of the data satisfying the data acquisition condition satisfies the provider condition, the platform system performs control such that the user is allowed to access the data satisfying the data acquisition condition.

Computer system and data access control method

A first node group including at least three nodes is predefined in a distributed storage system. Each node of the first node group is configured to send data blocks stored in storage devices managed by the node to other nodes belonging to the first node group. A first node is configured to receive data blocks from two or more other nodes in the first node group. The first node is configured to create a redundant code using a combination of data blocks received from the two or more other nodes and store the created redundant code to a storage device different from storage devices holding the data blocks used to create the redundant code. Combinations of data blocks used to create at least two redundant codes in redundant codes created by the first node are different in combination of logical addresses of constituent data blocks.

Distributed storage system

A data complementing system stores cell-region characteristic data that includes values of a plurality of data items regarding a cell region that is a region obtained by dividing the region into a mesh, information indicating a missing data item that is the data item of missing data being data missed in the cell-region characteristic data, external region characteristic data that includes values of a plurality of data items regarding an external region that is different from the region, and an external cell-region characteristic data that includes values of a plurality of data items regarding an external cell region obtained by dividing the external region into a mesh, generates a complement model for generating complement data indicating a value of the missing data item based on the external region characteristic data and the external cell-region characteristic data, and generates the complement data based on the complement model.

Data complementing system and data complementing method

The management computer has a memory which stores management information and management programs, and a CPU which refers to the management information and executes the management programs; the management information includes storage management information for allowing determination as to whether the plurality of storage resources can be paired in a redundant configuration, and couplable configuration management information for determining whether the plurality of storage resources and the plurality of server resources can be connected to each other; and when the CPU deploys a virtual machine, the CPU first determines, by reference to the storage management information, storage resources to be paired in a redundant configuration, then selects, by reference to the couplable configuration management information, server resources each of which can be connected to a respective one of the storage resources that are to be paired in a redundant configuration, and pairs the selected server resources in the redundant configuration.

Management computer and resource management method configured to combine server resources and storage resources and allocate the combined resources to virtual machines

In a computer system, when a first high availability (HA) pair is configured with a first logical device of a first storage apparatus and a second logical device of a second storage apparatus, the first logical device is virtualized on a third storage apparatus and is set to correspond with a third logical device of the third storage apparatus. A fourth storage apparatus virtualizes the second logical device and sets the second logical device to correspond with a fourth logical device of the fourth storage apparatus. After a second HA pair is configured with the third logical device and the fourth logical device, the data on the first logical device is migrated to the third storage apparatus and managed as data on the third logical device. The data on the second logical device is migrated to the fourth storage apparatus and managed as data on the fourth logical device.

Computer system, and data migration method in computer system

A storage system manages control information, which is information related to responses corresponding to prescribed types of commands, for each of a plurality of logical units associated with a logical device, said logical units being provided to one or more host systems. The prescribed types of commands indicating the logical units provided to a first host system, which is one of the one or more host systems, are received from the first host system by the storage system. Responses based on the control information corresponding to the logical units indicated by the received prescribed types of commands are returned to the first host system by the storage system as responses to the received prescribed types of commands.

Computer system and storage control method

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.

Storage system and storage control method

A flash memory storage system has a plurality of flash memory devices comprising a plurality of flash memories, and a controller having an I/O processing control unit for accessing a flash memory device specified by a designated access destination in an I/O request received from an external device from among the plurality of flash memory devices. A parity group can be configured of flash memory devices having identical internal configuration.

Flash memory storage system

A controller receives new data which is data updated from old data, stores the received new data in a memory, reads the old data from a first storage medium group and stores the old data read into the memory, generates transfer data which is used to replicate in the subsidiary storage system new data with less information than the new data on the basis of a difference between the old data and the new data in the memory and transmits the transfer data to the subsidiary storage system, reads the old parity and stores it in the memory, and generates new parity which is parity updated from the old parity on the basis of the old parity in the memory and XOR data which is the exclusive logical sum of the new data and old data in the memory, and stores the new parity in the first storage medium group.

Storage system, and method of storage control for storage system

A storage system for storage of data written from a computer, and when a write request of data to a first logical volume is received, the data on request is stored into the first logical volume. When a first-generation snapshot creation request is received, the data stored in the first logical volume at the time of receiving the first-generation snapshot creation request is written into a pool region as data corresponding to a first-generation snapshot, and when a second-generation snapshot creation request is received, any portion of the data updated after the first-generation snapshot creation request is received but before the second-generation snapshot creation request is issued is read from the first logical volume for writing into the pool region. Such a storage system favorably implements snapshot backup with no dependency with a positive volume in terms of performance and failure, and with high capacity efficiency.

Storage system and method implementing online volume and snapshot with performance/failure independence and high capacity efficiency

An externally-connected volume of a main storage is correlated to an AOU volume inside of an external storage. The AOU volume is allocated with a not-yet-used page in a pool in accordance with data writing. When a command is issued to the externally-connected volume for formatting or others, a first controller in the main storage converts the command into a format command or an area deallocation command with respect to the AOU volume in the external storage. As such, the external AOU volume is subjected to a write process in its entirety, thereby being able to prevent any unnecessary page allocation. With such a configuration, the storage system of the present invention can use pages in the pool with good efficiency.

Storage system and control method for the same

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Yokohama, Japan

Shunji Kawamura