Kabushiki Kaisha Toshiba

Kioxia Corporation

Toshiba Memory Corporation

Sony Corporation

Kioxia Corporaton

Takeshi Ishihara

Yuichiro Oyama

Kotaro Ise

Eiji Kamagata

Hiroshi Nishimoto

Yoshimichi Tanizawa

Keisuke Mera

Yohei Hasegawa

Takaomi Murakami

Yoshihiro Ohba

Nobuhiko Sugasawa

Shinichi Kanno

Masahiro Ishiyama

Hiroshi Isozaki

Masataka Goto

Takafumi Sakamoto

Koji Ogura

Kensaku Yamaguchi

Tsuyoshi Kogawa

Yasuyuki Kozakai

Tatsunori Kanai

Takeshi Saito

Shinya Murai

Kazuhiro Nishiyama

Tetsuro Kimura

Ren Sakata

Tomoya Sanuki

Takahiro Yamaura

Yasuro Shobatake

Tatsuma Hirano

Yusuke Doi

Daisuke Ajitomi

Kenta Yasufuku

Junichi Segawa

Yu Kaneko

Daiki Watanabe

Toshiyuki Nakanishi

Kenichi Taniuchi

Keiji Yamamoto

Kaoru Sekigawa

Toshiyuki Yamazaki

Shohei Onishi

Masami Tsubaki

Naohisa Shibuya

Akira Ichie

Yoshiyuki Yahagi

Shinji Arakawa

Yoshiki Saito

Cam Ly Nguyen

Keiji Saito

Seikei Lee

Kenji Shirakawa

Yasuhiro Fukuju

Atsushi Ohba

Kouichi Takimoto

Hiromi Inoue

Koji Kosaka

Shuhei Kanaoka

Hidekazu Tadokoro

Atsushi Inoue

Kohei Okuda

Junpei Kida

A method for executing query processing includes, in response to a query from a host, generating a task graph indicating a plurality of task sequences, each of the task sequences capable f performing query processing corresponding to the query. The sequences includes a first sequence that outputs data in a first compression state to a one of output targets, and a second sequence of tasks that outputs the data in a second compression state different from the first compression state to the one of the output targets. The method further includes determining a processing cost for each of the task sequences, selecting one of the task sequences in accordance with the determined processing cost, and performing the query processing corresponding to the query in accordance with the selected task sequence.

Method and database system for optimizing query processing execution scheme

According to one embodiment, a distribution unit generates a set of first ciphertext fragments based on a first identifier specifying a storage destination of the first ciphertext and a constitution information specifying a constitution of the first ciphertext, generates a deformation command using a second key used for deforming the first ciphertext for at least one fragment belonging to the set of the first ciphertext fragments, and allocates the deformation command to at least one of storage units. A temporary storage unit deforms the first ciphertext fragment by using the second key based on the deformation command, and stores a second ciphertext fragment as a result of the deformation in a non-volatile storage unit instead of the first ciphertext fragment.

Information storage device and information storage system

An information storage device includes a storage unit, a control unit, an allocation information storage unit, a QoS parameter storage unit, and a monitoring result storage unit. The control unit creates and manages a logical storage area using the storage area of the storage unit when a storage area allocation request is received. The allocation information storage unit stores allocation information related to logical storage areas. The QoS parameter storage unit stores quality requests expected to be satisfied for a communication for using the logical storage area. The control unit monitors the operating state and characteristics of the storage unit and the communication status, and stores the results in the monitoring result storage unit. The control unit derives internal QoS parameters to be set in the information storage device from the information stored in the allocation information storage unit, the QoS parameter storage unit, and the monitoring result storage unit.

Quality of service (QOS) Control in storage device and control system and QOS control method

According to one embodiment, a controller includes a first interface, a second interface, a virtual register table, a memory management unit and a calculation processing unit. The first interface receives an I/O command from a host. The second interface transmits and receives first host data to and from a storage. The virtual register table has a virtual address specified by a page number assigned to a page in which data to be used to process a calculation instruction is stored and a page offset, and a data size of the data. The memory management unit stores, into a memory, the copy of the first host data, and updates the virtual register table. The calculation processing unit processes the calculation instruction by referring to the virtual register table.

Controller and control method

According to one embodiment, an I/O command control device receives authorization information indicating whether execution of an I/O command is permitted. When the received authorization information is not modified and is issued from a known authorization server, the I/O command control device verifies whether the received authorization information permits execution of the I/O command. The I/O command control device permits or inhibits execution of the I/O command or a control command generated from the I/O command with respect to a logical area that is an execution target of the I/O command, in accordance with an authorization result indicating whether the received authorization information permits execution of the I/O command.

I/O command control device and information storage device

According to one embodiment, a storage device includes a non-volatile memory and a control unit that is electrically connected to the non-volatile memory and that is configured to control the non-volatile memory. The control unit is configured to manage a plurality of management areas obtained by logically partitioning storage area of the non-volatile memory, when a write request is received that includes data for which a valid term has been set, determine, based on the valid term, a first management area from among the management areas, write the data included in the write request to the determined first management area, and when the data written to the first management area is erased, collectively erase all data written in the first management area which includes the data.

Storage device, storage system, and method

According to one embodiment, a computing device executes an application including processing of inputting information from a nonvolatile memory unit and outputting information to the nonvolatile memory unit. The computing device includes a processing unit. The processing unit executes processing of receiving an I/O request to the nonvolatile memory unit from the application and generating one or more control commands for controlling the nonvolatile memory unit based on the I/O request. The processing unit executes processing of acquiring authorization information from a server. The processing unit executes processing of inserting or associating the acquired authorization information into or with the I/O request or the one or more control commands.

Computing device and control method for transmitting I/O command to storage device

According to one embodiment, an I/O command control apparatus receives authorization information. The authorization information indicates whether or not to permit an execution of an I/O command. The apparatus verifies whether the received authorization information is not tampered with, and whether the received authorization information is issued from a known authorization server. In a case where the authorization information is not tampered with, and is issued from the known server, the apparatus verifies whether or not the authorization information permits to execution of the I/O command. The apparatus permits or prohibits the execution of the I/O command or execution of a control command generated from the I/O command, based on the authorization result.

I/O command control apparatus and storage system

According to one embodiment, an information processing device includes a characteristics monitoring unit, a determination unit, and a notification unit. The characteristics monitoring unit monitors characteristics information that indicates at least one of its performance and lifetime with respect to a storage device, and includes input/output characteristics. The determination unit determines, based on monitored characteristics information including the input/output characteristics, whether change instruction for changing characteristics is to be notified to the storage device. The notification unit notifies the storage device of the change instruction when the determination unit determines that the change instruction is to be notified.

Information processing device, information processing method, computer-readable storage medium, and information processing system

A memory system includes a plurality of physical memories and a memory controller. The memory controller is configured to configure one or more logical memories used by one or more programs, respectively, to which areas of the plurality of physical memories are allocated. The memory controller is configured to calculate first data indicating a response performance of the plurality of physical memories, calculate second data indicating a degree of influence of waiting for access to the one or more logical memories, the degree of influence being on a processing performance of the one or more programs, and control allocation of the areas of the plurality of physical memories to the one or more logical memories on the basis of the first data and the second data.

Utilization-efficient resource allocation

A storage device is used in a storage system including a host computer and storage devices in which host data used by the host computer are distributed and stored. The storage device includes a host data memory section, a communication controller, and a controller. The host data memory section stores, data in a range notified by the host computer. The communication controller receives a write request to a multicast address corresponding to the range of the data stored in the host data memory section. The controller stores write data specified by the write request, in the host data memory section.

Storage system, storage device, and method of controlling storage system

According to one embodiment, a data processing device including a user space including a user space thread including a plurality of coroutines and a file system. The file system is configured to: allocate a plurality of processes generated by an application to the plurality of coroutines; check the plurality of coroutines in order; when a first process included in the plurality of processes is allocated to a first coroutine included in the plurality of coroutines, write a first IO request based on the first process in a submission queue; and when the submission queue is filled, or when checking the plurality of coroutines is finished, transmit the first IO request written in the submission queue to a storage device.

Data processing device

A management server includes a processor and a storage that stores correlation information in which a category into which content is classified, location information, and an access frequency are correlated with one another. The processor acquires access information on an access from a wireless terminal to a content server via an access point and a network, a content requested by the wireless terminal, and location information corresponding to the accessed access point, updates the correlation information by rewriting the access frequency corresponding to a category to which the requested content belongs and the acquired location information, according to the access information, specifies a category and location information such that an access frequency related to the category and location information in the updated correlation information satisfies a criterion, and stores a content belonging to the category in a cache area of an access point corresponding to the location information.

Management server, content management method, and content management program for caching content in an access point

According to one embodiment, a communication control device includes processing circuitry. The processing circuitry acquires at least either; wired communication characteristic information or wireless communication characteristic information from relaying devices or, storage characteristic information indicating usage of a plurality of storage devices storing data units that are transferred via the relaying devices and sent or received by a terminal in the wireless network or, data characteristic information indicating states of a plurality of data units stored in each of the storage devices. The processing circuitry is configured to receive a data acquisition request or a data saving request sent from the terminal and specify a relaying device or a storage device that processes the data acquisition request or the data saving request, and sends an instruction to the terminal, instructing to transmit the data acquisition request or the data saving request to the specified relaying device or the storage device.

Communication control device, communication control method, and non-transitory computer readable medium

Growing community of inventors

Yokohama, Japan

Takeshi Ishihara