Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 34. Отображено 30.
08-09-2016 дата публикации

STORAGE CONTROL DEVICE, STORAGE CONTROL METHOD AND STORAGE CONTROL PROGRAM

Номер: US20160259580A1
Автор: Chikashi Maeda, Kazuhiko IKEUCHI, Kazuhiro URATA, Yukari Tsuchiyama, Takeshi WATANABE, Guangyu ZHOU, MAEDA CHIKASHI, IKEUCHI KAZUHIKO, URATA KAZUHIRO, TSUCHIYAMA YUKARI, WATANABE TAKESHI, ZHOU GUANGYU, Maeda Chikashi, IKEUCHI Kazuhiko, URATA Kazuhiro, Tsuchiyama Yukari, WATANABE Takeshi, ZHOU Guangyu
Принадлежит: FUJITSU LIMITED

A storage control device includes a control unit that calculates a stripe depth and a size of padding data, when writing target data is distributed and written to respective data storages of a storage device with a RAID configuration, based on a size of the writing target data and a number of the data storages in response to a writing request to a volume on the storage device, and writes the writing target data based on the calculated stripe depth and the calculated size of the padding data.

Подробнее
Номер записи: 1
14-09-2017 дата публикации

STORAGE CONTROL DEVICE, STORAGE SYSTEM AND METHOD OF CONTROLLING A STORAGE DEVICE

Номер: US20170263284A1
Автор: Takeshi WATANABE, Chikashi Maeda, Kazuhiro URATA, Yukari Tsuchiyama, Guangyu ZHOU, WATANABE TAKESHI, MAEDA CHIKASHI, URATA KAZUHIRO, TSUCHIYAMA YUKARI, ZHOU GUANGYU, WATANABE Takeshi, Maeda Chikashi, URATA Kazuhiro, Tsuchiyama Yukari, ZHOU Guangyu
Принадлежит: FUJITSU LIMITED

A storage control device configured to control a storage device including a plurality of groups each of which includes a plurality of storage regions, the storage control device includes a memory and a processor coupled to the memory and configured to store, into the memory, information associated with each of the plurality of groups and indicating whether an error region in which an error is detected is included in at least one of the plurality of storage regions of each of the plurality of groups, identify a first group including the error region from the plurality of groups based on the information associated with the plurality of groups, read data from a plurality of storage regions included in the identified first group, and identify the error region included in the first group based on the read data.

Подробнее
Номер записи: 2
06-10-2016 дата публикации

STORAGE CONTROL APPARATUS AND STORAGE CONTROL METHOD

Номер: US20160291901A1
Автор: Takeshi WATANABE, Kazuhiko IKEUCHI, Chikashi Maeda, Kazuhiro URATA, Yukari Tsuchiyama, Guangyu ZHOU, WATANABE TAKESHI, IKEUCHI KAZUHIKO, MAEDA CHIKASHI, URATA KAZUHIRO, TSUCHIYAMA YUKARI, ZHOU GUANGYU, WATANABE Takeshi, IKEUCHI Kazuhiko, Maeda Chikashi, URATA Kazuhiro, Tsuchiyama Yukari, ZHOU Guangyu
Принадлежит: FUJITSU LIMITED

In a storage control apparatus, a control unit determines whether prefetching data on a first data amount basis from a plurality of storage devices to a storage unit causes an imbalance in the numbers of commands issued to the storage devices. When determining that the prefetching causes the imbalance, the control unit prefetches the data on a second data amount basis such as to balance the numbers of commands issued to the storage devices. With this approach, the storage control apparatus creates a different imbalance of the number of read commands issued for each execution of prefetch staging, so as to prevent a fixed imbalance in which more read commands are always issued to a specific storage device. 1. A storage control apparatus for controlling a plurality of storage devices over which data blocks and parity blocks corresponding to the data blocks are distributed , the storage control apparatus comprising:a memory; anda processor that performs a procedure including prefetching, when prefetching data on a first data amount basis from the plurality of storage devices to the memory causes an imbalance in numbers of commands issued to the plurality of storage devices, the data on a second data amount basis such as to balance the numbers of commands issued to the plurality of storage devices.2. The storage control apparatus according to claim 1 , wherein the procedure further includes detecting that the imbalance in the numbers of commands issued to the plurality of storage devices is caused claim 1 , based on a RAID level of a RAID set configured with the plurality of storage devices.3. The storage control apparatus according to claim 1 , wherein the procedure further includes detecting the imbalance in the numbers of commands issued to the plurality of storage devices claim 1 , based on a number of storage devices corresponding to the data blocks or a number of storage devices corresponding to the parity blocks in a RAID set configured with the plurality of ...

Подробнее
Номер записи: 3
11-08-2016 дата публикации

SYSTEM, METHOD AND NON-TRANSITORY COMPUTER READABLE MEDIUM

Номер: US20160232104A1
Автор: Kazuhiko IKEUCHI, Chikashi Maeda, Kazuhiro URATA, Yukari Tsuchiyama, Takeshi WATANABE, Guangyu ZHOU, IKEUCHI KAZUHIKO, MAEDA CHIKASHI, URATA KAZUHIRO, TSUCHIYAMA YUKARI, WATANABE TAKESHI, ZHOU GUANGYU, IKEUCHI Kazuhiko, Maeda Chikashi, URATA Kazuhiro, Tsuchiyama Yukari, WATANABE Takeshi, ZHOU Guangyu
Принадлежит: Fujitsu Ltd

A system that sets a logical volume in a first physical address region of a storage device including a plurality of memory areas, receives a write request to write data to a first logical address of the logical volume, calculates a difference between a first physical address corresponding to the first logical address and a head physical address of a first memory area of the plurality of memory areas, changes, based on the calculated difference, a first physical address region of the logical volume in the storage device to a second physical address region of the storage device, and writes the data to the first logical address of the logical volume set in the second physical address region of the storage device.

Подробнее
Номер записи: 4
04-10-2012 дата публикации

STORAGE APPARATUS AND STORAGE CONTROL DEVICE

Номер: US20120254531A1
Автор: Nakashima Kazuo, URATA Kazuhiro
Принадлежит: FUJITSU LIMITED

A storage apparatus configured to store data received from a host system in a drive unit includes a memory unit partitioned into a cache area configured to temporarily store data read out from the drive unit and data to be written in the drive unit and an information storage area assigned for a memory pool configured to hold information for internal processing of the storage apparatus; an information-storage-area management table in which information-storage-area management information including position information on the memory pool in the memory unit is registered; a cache-area management table in which cache-area management information including usage status of the cache area is registered; and a memory control unit configured to acquire a memory area in the cache area having the least amount of write pending data in a pending state for writing in the drive unit by referring to the cache-area management table. 1. A storage apparatus configured to store data received from a host system in a drive unit , comprising:a memory unit partitioned into a cache area configured to temporarily store data read out from the drive unit and data to be written in the drive unit and an information storage area assigned for a memory pool configured to hold information for internal processing of the storage apparatus;an information-storage-area management table in which information-storage-area management information including position information on the memory pool in the memory unit is registered;a cache-area management table in which cache-area management information including usage status of the cache area is registered; anda memory control unit configured to acquire a memory area in the cache area having the least amount of write pending data in a pending state for writing in the drive unit by referring to the cache-area management table when the memory pool is allocated in the memory unit while the storage apparatus is in operation, to allocate the memory pool in the acquired ...

Подробнее
Номер записи: 5
11-02-2016 дата публикации

Storage control device and storage control method

Номер: US20160041877A1
Автор: Chikashi Maeda, Guangyu ZHOU, Kazuhiko Ikeuchi, Kazuhiro URATA, Takeshi Watanabe, Yukari Tsuchiyama
Принадлежит: Fujitsu Ltd

A storage control apparatus includes a controller to, when more storage devices, among a plurality of storage devices across which a plurality of information areas storing information representing redundant data and one or more spare areas are distributed, than the number of the spare areas fail, perform a rebuild process of information stored in a plurality of information areas of a failed first storage device included in the plurality of combinations of the plurality of information areas and the one or more spare areas, the rebuild process including restoring information corresponding to one information area of the failed first storage device included in one combination among the plurality of combinations, and determining a write destination storage device to which the restored information is to be written in accordance with the number of times information is read from a non-failed second storage device.

Подробнее
Номер записи: 6
03-03-2016 дата публикации

STORAGE CONTROL APPARATUS AND STORAGE MEDIUM STORING STORAGE CONTROL PROGRAM

Номер: US20160062658A1
Автор: Ikeuchi Kazuhiko, Maeda Chikashi, Tsuchiyama Yukari, URATA Kazuhiro, Watanabe Takeshi, ZHOU Guangyu
Принадлежит: FUJITSU LIMITED

A storage control apparatus, that controls a storage apparatus that includes a storage drive in which a plurality of logical volumes are set, includes a storage unit that stores load information for each of the plurality of logical volumes, and a control unit that determines to-be-rebuilt volumes, which are targets to be rebuilt, from the plurality of logical volumes, sequentially selects a logical volumes for which a volume-specific taken time is estimated, determines, for each selected logical volume, a volume-specific start time at which a rebuild will be started, estimates, by using the volume-specific start time and the load information about the selected logical volume, the volume-specific taken time for rebuilding the selected logical volume, and totals the volume-specific taken time estimated for each selected logical volume to calculate a total taken time taken for rebuilding the to-be-rebuilt volumes. 1. A storage control apparatus that controls a storage apparatus that includes a storage drive in which a plurality of logical volumes are set , the storage control apparatus comprising:a storage unit that stores load information created, for each of the plurality of logical volumes, from a history of accesses to each of the plurality of logical volumes: anda control unit thatdetermines to-be-rebuilt volumes, which are targets to be rebuilt, from the plurality of logical volumes,sequentially selects, from the to-be-rebuilt volumes, logical volumes for which a volume-specific taken time is estimated,determines, for each of the selected logical volumes, a volume-specific start time at which a rebuild will be started for the selected logical volume,estimates, by using the volume-specific start time and the load information about the selected logical volume, the volume-specific taken time for rebuilding the selected logical volume, andtotals the volume-specific taken time estimated for each of the selected logical volumes to calculate a total taken time taken for ...

Подробнее
Номер записи: 7
30-04-2015 дата публикации

RAID CONFIGURATION MANAGEMENT DEVICE AND RAID CONFIGURATION MANAGEMENT METHOD

Номер: US20150121002A1
Автор: Daikokuya Hidejirou, Ikeuchi Kazuhiko, Kobayashi Kenji, Kubota Norihide, Maeda Chikashi, Tsuchiyama Yukari, Tsukahara Ryota, URATA Kazuhiro, Watanabe Takeshi
Принадлежит:

A CM includes an unmount detector and a mount detector that monitor unmount and mount of each disk of a RAID configuration, a write request manager that manages a write request for writing data to a disk that is unmounted, a consistency determination unit that, when mount of a disk of the RAID configuration is detected, makes a determination on consistency of the data of the disk in which mount is detected on the basis of the managed write request, and a RAID incorporating unit that, when it is determined that the data lacks consistency, performs processing for recovering data expected to be written by the write request issued to the disk in which mount is detected while the disk is unmounted and incorporates the disk in an original RAID configuration. 1. A RAID configuration management device that manages a RAID configuration that is constituted by a plurality of drives , the RAID configuration management device comprising:a monitoring unit that monitors unmount and mount of each drive of the RAID configuration;a writing manager that manages a write request for writing data to a drive that is unmounted;a determination unit that, when the monitoring unit detects mount of a drive of the RAID configuration, makes a determination on consistency of the data of the drive in which mount is detected on the basis of the write request that is managed by the writing manager; andan incorporating unit that, when the determination unit determines that the data lacks consistency, performs processing for recovering data expected to be written by the write request that is issued to the drive in which mount is detected while the drive is unmounted and incorporates the drive in an original RAID configuration.2. The RAID configuration management device according to claim 1 , further comprising:a storage unit that stores, per drive, drive information that associates identification information that identifies a drive with RAID information that is information on the RAID in which the ...

Подробнее
Номер записи: 8
21-05-2015 дата публикации

STORAGE CONTROL APPARATUS, METHOD OF CONTROLLING STORAGE SYSTEM, AND COMPUTER-READABLE STORAGE MEDIUM STORING STORAGE CONTROL PROGRAM

Номер: US20150143167A1
Автор: Daikokuya Hidejirou, Ikeuchi Kazuhiko, Kobayashi Kenji, Kubota Norihide, Maeda Chikashi, Tsuchiyama Yukari, Tsukahara Ryota, URATA Kazuhiro, Watanabe Takeshi
Принадлежит:

A storage control apparatus for controlling a storage system including a plurality of storage devices includes a monitor unit that collects statistics from each of the storage devices; and a selection unit that, in the event of a failure of any of the storage devices, selects a storage device to which data in the failed storage device is to be reconstructed, based on the statistics collected by the monitor unit. 1. A storage control apparatus for controlling a storage system comprising a plurality of storage devices , the storage control apparatus comprising:a monitor unit that collects statistics from each of the storage devices; anda selection unit that, in the event of a failure of any of the storage devices, selects a storage device to which data in the failed storage device is to be reconstructed, based on the statistics collected by the monitor unit.2. The storage control apparatus according to claim 1 , wherein the monitor unit collects the statistics for each of the storage devices.3. The storage control apparatus according to claim 1 , wherein the statistics are an input/output load on each of the storage devices.4. The storage control apparatus according to claim 3 , wherein the monitor unit collects an input/output load comprising the number of commands issued to each of the storage devices and the amount of accessed data.5. The storage control apparatus according to claim 3 , wherein the selection unit preferentially selects a storage device having a lower input/output load for the storage device to which the data is to be reconstructed for each chunk of a predetermined size.6. The storage control apparatus according to claim 5 , wherein the storage devices have a plurality of spare chunks for the chunks of stored data.7. A method of controlling a storage system comprising a plurality of storage devices claim 5 , the method comprising:collecting statistics from each of the storage devices; andin the event of a failure of any of the storage devices, ...

Подробнее
Номер записи: 9
11-06-2015 дата публикации

STORAGE CONTROL APPARATUS AND STORAGE CONTROL METHOD

Номер: US20150161043A1
Автор: Ikeuchi Kazuhiko, KOBAYASHI Akihito, Maeda Chikashi, NIMURA Koutarou, Tsuchiyama Yukari, URATA Kazuhiro, Watanabe Takeshi, ZHOU Guangyu
Принадлежит:

A storage control apparatus is communicatively connected to a storage device. The storage device includes a plurality of SSDs. The storage control apparatus includes a processing request controller and a device load detector. The device load detector detects an overload of an SSD by detecting a processing delay of the SSD. When the device load detector has detected an overload of an SSD, the processing request controller suppresses issuance of a request to process write-back with respect to a group by delaying issuance of the write-back. 1. A storage control apparatus which controls write-back of data stored in a write-back cache with respect to a group including a plurality of solid state drives , the storage control apparatus comprising one or more processors configured to perform a procedure including:detecting a load of each of the plurality of solid state drives; andsuppressing issuance of requests to process the write-back with respect to one or more solid state drives in the group to which a solid state drive from which a predetermined load has been detected belongs, to control the issuance of requests to process write-back with respect to the group and the plurality of solid state drives.2. The storage control apparatus according to claim 1 , wherein the procedure further includesdetecting a load of the issuance of the requests to process the write-back, andsuppressing the issuance of the requests to process the write-back when having detected a predetermined load.3. The storage control apparatus according to claim 2 , wherein the predetermined load of the issuance of the requests to process the write-back is that a number of concurrently issued requests to process the write-back for each group exceeds a first threshold.4. The storage control apparatus according to claim 3 , wherein the group is a RAID group.5. The storage control apparatus according to claim 1 , wherein claim 1 , as the load of each of the plurality of solid state drives claim 1 , a ...

Подробнее
Номер записи: 10
20-06-2019 дата публикации

Storage system, control device, and control method

Номер: US20190187925A1
Автор: Kazuhiro URATA
Принадлежит: Fujitsu Ltd

A control device receives a first request signal for requesting to write first data in a first logical address area of a logical volume set stores the first data in a physical volume in accordance with the first request signal, erases, after receiving the first request signal, the first data in the first logical address area of the logical volume without erasing the first data in the physical volume, and when executing a first erasure processing for erasing the first data in the physical volume, holds the first data in the physical volume, in a case where history information for indicating that a second erasure processing has been executed prior to the first erasure processing is held, and erases the first data in the physical volume, in a case where the history information is not held.

Подробнее
Номер записи: 11
25-09-2014 дата публикации

CONTROL DEVICE, AND STORAGE SYSTEM

Номер: US20140289478A1
Автор: Ikeuchi Kazuhiko, Kobayashi Kenji, Kubota Norihide, Maeda Chikashi, Tsuchiyama Yukari, Tsukahara Ryota, URATA Kazuhiro, Watanabe Takeshi
Принадлежит: FUJITSU LIMITED

A control device that controls a reading process of information stored in a unit storage area under control of the control device and a unit storage area under control of a different control device in a distributed manner, the control device includes a processor. The processor executes a procedure including determining whether or not the reading process is a sequential reading process that reads information stored in a unit storage area under control of the control device in an order of logical addresses and whether or not a reading target area of the sequential reading process includes a last address in the unit storage area, and reporting to the different control device control information related to a sequential reading process including the last address determined by the first determination unit. 1. A control device that controls a reading process of information stored in a unit storage area under control of the control device and a unit storage area under control of a different control device in a distributed manner , the control device comprising: first determining whether or not the reading process is a sequential reading process that reads information stored in a unit storage area under control of the control device in an order of logical addresses and whether or not a reading target area of the sequential reading process includes a last address in the unit storage area; and', 'reporting to the different control device control information related to a sequential reading process including the last address determined by the first determining., 'a processor that executes a procedure including2. The control device according to claim 1 , the procedure further including:second determining whether or not a reading process of a unit storage area under control of the control device and a reading process of a control device as a reporting source are the sequential reading processes on the basis of the control information reported from the different control device; ...

Подробнее
Номер записи: 12
26-08-2021 дата публикации

INFORMATION PROCESSING DEVICE AND COMPUTER-READABLE RECORDING MEDIUM RECORDING STORAGE CONTROL PROGRAM

Номер: US20210263668A1
Автор: URATA Kazuhiro
Принадлежит: FUJITSU LIMITED

An information processing device includes: a memory; and a processor coupled to the memory and configured to: receive an instruction to write data, executes processing to write the data to storage space of a storage device, and acquires first usage by in-use data in the storage space according to content of the write processing when the write processing has been executed; and determine setting of a space freeing-up process, based on the first usage acquired by the write processing unit and second usage by all data stored in the storage space, and executes the space freeing-up process with the determined setting. 1. An information processing device comprising:a memory; anda processor coupled to the memory and configured to:receive an instruction to write data, executes processing to write the data to storage space of a storage device, and acquires first usage by in-use data in the storage space according to content of the write processing when the write processing has been executed; anddetermine setting of a space freeing-up process, based on the first usage acquired by the write processing unit and second usage by all data stored in the storage space, and executes the space freeing-up process with the determined setting.2. The information processing device according to claim 1 , wherein the processor determines the setting of the space freeing-up process claim 1 , based on processing load of the storage device in addition to the first usage and the second usage.3. The information processing device according to claim 1 , wherein the processor determines the setting claim 1 , based on a difference between the first usage and the second usage.4. The information processing I device according to claim 1 , wherein the setting is a proportion of the space freeing-up process in processing executed by the storage device.5. The information processing device according to claim 4 , wherein the processor increases the proportion of the space freeing-up process when the ...

Подробнее
Номер записи: 13
08-09-2016 дата публикации

CONTROL APPARATUS, CONTROL METHOD, AND CONTROL PROGRAM

Номер: US20160259598A1
Автор: Ikeuchi Kazuhiko, Maeda Chikashi, Tsuchiyama Yukari, URATA Kazuhiro, Watanabe Takeshi, ZHOU Guangyu
Принадлежит: FUJITSU LIMITED

A control apparatus, that controls allocation of data in a logical volume so that the data is allocated so as to span a plurality of RAID groups, according to a predetermined allocation pattern, includes a storage unit that stores correspondence information that includes at least one changing condition under which an allocation pattern for the data is changed and a new allocation pattern; and a control unit that identifies an access trend for each of the plurality of RAID groups, decides whether the logical volume satisfies the at least one changing condition, according to the correspondence information and the identified access trend, and reallocates, if the changing condition is satisfied, the data included in the logical volume according to the new allocation pattern corresponding to that changing condition. 1. A control apparatus that controls allocation of data included in a logical volume so that the data is allocated in a plurality of physical storage areas , which have been assigned so as to span a plurality of RAID groups , according to a predetermined allocation pattern , the control apparatus comprising:a storage unit that stores correspondence information that includes at least one changing condition under which an allocation pattern for the data is changed and a new allocation pattern substituted for the allocation pattern in correspondence to each other; anda control unit thatidentifies an access trend for each of the plurality of RAID groups that are accessed in response to access requests for the logical volume,decides whether the logical volume satisfies the at least one changing condition, according to the correspondence information and the identified access trend, andreallocates, if the control unit decides that the at least one changing condition is satisfied, the data included in the logical volume according to the new allocation pattern corresponding to the at least one changing condition.2. The control apparatus according to claim 1 , wherein: ...

Подробнее
Номер записи: 14
01-10-2015 дата публикации

STORAGE CONTROL APPARATUS, RECORDING MEDIUM HAVING STORED THEREIN STORAGE CONTROL PROGRAM AND STORAGE CONTROL METHOD

Номер: US20150278020A1
Автор: Ikeuchi Kazuhiko, Maeda Chikashi, Tsuchiyama Yukari, URATA Kazuhiro, Watanabe Takeshi, ZHOU Guangyu
Принадлежит:

A storage control apparatus starts, in a group of storage apparatuses that store constituent data that constitute redundant data in a distributed manner in units of a stripe, in regard to respective stripes of a plurality of stripes obtained from a group of target storage apparatuses excluding one of the storage apparatuses, a plurality of rebuilding processes for restoring the constituent data; decides, for each rebuilding process, a stripe for which the rebuilding process is to be performed next, according to access loads on the respective storage apparatuses of the group of target storage apparatuses; and obtains, for each rebuilding process, constituent data corresponding to the decided stripe from the group of target storage apparatuses and executing the rebuilding process, and executes the rebuilding process, to restore constituent data stored in the excluded storage apparatus from the obtained constituent data. 1. A storage control apparatus comprisinga processor that performs a process including:in a group of storage apparatuses that store constituent data that constitute redundant data in a distributed manner in units of a stripe that is a unit in which the constituent data are stored in parallel in respective storage apparatuses of the group of storage apparatuses, in regard to respective stripes of a plurality of stripes obtained from a group of target storage apparatuses excluding one of the storage apparatuses, starting a plurality of rebuilding processes for restoring the constituent data;for each rebuilding process, deciding a stripe for which the rebuilding process is to be performed next, according to access loads on the respective storage apparatuses of the group of target storage apparatuses; andfor the respective rebuilding processes, obtaining constituent data corresponding to the decided stripe from the group of target storage apparatuses and executing the rebuilding process, to restore constituent data stored in the excluded storage apparatus ...

Подробнее
Номер записи: 15
22-05-2018 дата публикации

Storage control apparatus and storage control method

Номер: US9977624B2
Автор: Chikashi Maeda, Guangyu ZHOU, Kazuhiko Ikeuchi, Kazuhiro URATA, Takeshi Watanabe, Yukari Tsuchiyama
Принадлежит: Fujitsu Ltd

In a storage control apparatus, a control unit determines whether prefetching data on a first data amount basis from a plurality of storage devices to a storage unit causes an imbalance in the numbers of commands issued to the storage devices. When determining that the prefetching causes the imbalance, the control unit prefetches the data on a second data amount basis such as to balance the numbers of commands issued to the storage devices. With this approach, the storage control apparatus creates a different imbalance of the number of read commands issued for each execution of prefetch staging, so as to prevent a fixed imbalance in which more read commands are always issued to a specific storage device.

Подробнее
Номер записи: 16
13-12-2016 дата публикации

Storage control device and storage control method

Номер: US9519542B2
Автор: Chikashi Maeda, Guangyu ZHOU, Kazuhiko Ikeuchi, Kazuhiro URATA, Takeshi Watanabe, Yukari Tsuchiyama
Принадлежит: Fujitsu Ltd

A storage control apparatus includes a controller to, when more storage devices, among a plurality of storage devices across which a plurality of information areas storing information representing redundant data and one or more spare areas are distributed, than the number of the spare areas fail, perform a rebuild process of information stored in a plurality of information areas of a failed first storage device included in the plurality of combinations of the plurality of information areas and the one or more spare areas, the rebuild process including restoring information corresponding to one information area of the failed first storage device included in one combination among the plurality of combinations, and determining a write destination storage device to which the restored information is to be written in accordance with the number of times information is read from a non-failed second storage device.

Подробнее
Номер записи: 17
10-01-2024 дата публикации

情報処理装置および情報処理方法

Номер: JP2024001607A
Автор: Kazuhiro URATA, 一宏 浦田
Принадлежит: Fujitsu Ltd

【課題】管理テーブルからの不要なハッシュ値の削除処理にかかる時間を短縮する。【解決手段】処理部１２は、複数の部分記憶領域の中から処理対象の第１の部分記憶領域を選択し、複数のグループの中から第１の部分記憶領域が属する第１のグループを特定し、管理テーブル１３に含まれるグループ領域のうち、第１のグループに対応する第１のグループ領域に含まれるレコードの中から、第１の部分記憶領域に含まれる単位記憶領域に対応する第１のレコードを検索し、検索された第１のレコードに対応する第１の部分記憶領域に格納されたデータに対する論理記憶領域からの参照数が０である場合、第１のレコードに含まれる第１のハッシュ値を削除する。【選択図】図１

Подробнее
Номер записи: 18
05-09-2016 дата публикации

ストレージ制御装置、制御方法、および制御プログラム

Номер: JP2016162262A
Автор: Chikashi Maeda, Guangyu ZHOU, Kazuhiko Ikeuchi, Kazuhiro URATA, Takashi Watanabe, Yukari Tsuchiyama, 一宏 浦田, 和彦 池内, 岳志 渡辺, 广宇 周
Принадлежит: Fujitsu Ltd

【課題】ライトペナルティを削減して書込性能の低下を抑制すること。【解決手段】ストレージ制御装置１０１は、ＲＡＩＤ構成のストレージ装置Ｓ１〜Ｓ４上のボリュームに対する書込要求を受け付ける。ストレージ制御装置１０１は、書込対象データのサイズとデータストレージ数とに基づいて、書込対象データを各データストレージに分散して書き込む際のストライプデプスとパディングデータのサイズとを算出する。ストレージ制御装置１０１は、算出したストライプデプスとパディングデータのサイズとに基づいて、書込対象データの書き込みを行う。【選択図】図１

Подробнее
Номер записи: 19
28-12-2023 дата публикации

Information processing apparatus and information processing method

Номер: US20230418798A1
Автор: Kazuhiro URATA
Принадлежит: Fujitsu Ltd

An information processing apparatus includes a storage that stores, in a state where a physical storage area in which data requested to be written to a logical storage area is to be stored without duplication is divided into a plurality of partial storage areas, each includes a plurality of unit storage areas, and where the plurality of partial storage areas are grouped in a plurality of groups, a management table in which a record associated with each of the unit storage areas is registered. The management table is divided into group regions in each of which, the records associated with the unit storage areas included in the partial storage areas belonging to the associated group among the plurality of groups are registered, each of the records contains a first hash value based on data in the associated unit storage area and location information of the associated unit storage area.

Подробнее
Номер записи: 20
18-08-2016 дата публикации

ストレージ制御装置、制御方法、および制御プログラム

Номер: JP2016148936A
Автор: Chikashi Maeda, Guangyu ZHOU, Kazuhiko Ikeuchi, Kazuhiro URATA, Takashi Watanabe, Yukari Tsuchiyama, 一宏 浦田, 和彦 池内, 岳志 渡辺, 广宇 周
Принадлежит: Fujitsu Ltd

【課題】書込性能の低下を抑制すること。【解決手段】制御装置１００は、論理ボリューム＃０に対するデータの書込要求を受け付ける。制御装置１００は、データの書込位置をストライプのサイズやセクタのサイズなどで除算する。そして、制御装置１００は、論理ボリューム上のストライプやセクタの境界からの、データの書込位置のずれ量として、除算したときの剰余を算出する。制御装置１００は、算出したずれ量に基づいて、ストレージ装置の物理領域上で論理ボリュームのデータを再配置する。制御装置１００は、具体的には、例えば、ストレージ装置の物理領域上で、論理ボリュームのデータの先頭または末尾に、ずれ量に応じたサイズのダミーデータを挿入して再配置する。【選択図】図１

Подробнее
Номер записи: 21
01-09-1984 дата публикации

異心型火口による高速ガス切断法

Номер: JPS59153572A
Автор: Eiji Iwai, Kazuhiro URATA, Nobuhisa Maeda, 信久 前田, 岩井　英司, 浦田　計広
Принадлежит: Hitachi Zosen Corp

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Подробнее
Номер записи: 22
14-09-2017 дата публикации

ストレージ制御装置、ストレージ制御方法、およびストレージ制御プログラム

Номер: JP2017162202A
Автор: Chikashi Maeda, Guangyu ZHOU, Kazuhiro URATA, Takashi Watanabe, Yukari Tsuchiyama, 一宏 浦田, 岳志 渡辺, 广宇 周, 由嘉莉 土山
Принадлежит: Fujitsu Ltd

【課題】ストレージにおけるエラー領域を管理する管理情報に費やされるメモリの記憶容量を低減すること。【解決手段】ストレージ制御装置１０１は、ビット情報１２２を、ビット情報記憶部１２０に記憶する。ストレージ制御装置１０１は、図１の（１）で示すように、ビット情報記憶部１２０に記憶されたビットマップ１２１を参照して、ボリューム１１１から不良セクタが含まれるグループを特定する。次に、ストレージ制御装置１０１は、図１の（２）で示すように、特定したグループに含まれるＬＢＡにおけるデータを読み出す。そして、ストレージ制御装置１０１は、図１の（３）で示すように、特定したグループ１１２に含まれるセクタに対する読み出し結果に基づいて、特定したグループから不良セクタを特定する。特定したグループ１１２に含まれるＬＢＡのデータに対する読み出し結果に基づいて、特定したグループ１１２における不良セクタを特定する。【選択図】図１

Подробнее
Номер записи: 23
16-09-2021 дата публикации

電子部品搭載装置および生産データ作成システム

Номер: JP2021141156A
Автор: Dai Hamahira, Kazuhiko Noda, Kazuhiro URATA, Michinori Kusakabe, Tomofumi Eguchi, Tomoyuki Sonoda, 倫史 江口, 和広 浦田, 和彦 野田, 大 浜平
Принадлежит: Panasonic Intellectual Property Management Co Ltd

【課題】生産データを作成するための実験を効率的に実施することができる電子部品搭載装置および生産データ作成システムを提供する。【解決手段】生産データ２４ａに基づき基板に電子部品を搭載する電子部品搭載装置Ｍ１は、電子部品が搭載された基板を生産するために使用する生産データ２４ａと、生産データ２４ａを求めるための実験で使用する実験用生産データ２４ｄと、を少なくとも記憶する搭載記憶部２４と、生産データ２４ａに基づき所定の量産条件で基板に電子部品を搭載する第１モードと、実験用生産データ２４ｄに基づき実験条件を変更しながら基板に電子部品を搭載する第２モードと、のいずれかで基板に電子部品を搭載する部品搭載部２２と、を備えた。【選択図】図３

Подробнее
Номер записи: 24
15-05-2001 дата публикации

既存地下建造物の補修壁構造及び補修壁の構築方法

Номер: JP2001132003A
Автор: Kazuhiro URATA, 和裕 浦田
Принадлежит: Individual

(57)【要約】 【課題】 既存建造物の地下室等における壁の完全防水 とともに耐震性を向上させる既存壁の補修壁構造を提供 する。 【解決手段】 本発明は、地下室などの既存壁の漏水防 止とともに強度的な補強を行うことにより耐震性を向上 させるようにしたものである。施工は、樹脂膜３ａにベ ントナイト３ｂを塗布してなる防水層３を壁面Ｗに貼付 し、その表面側に所定間隔状態に補強板（鋼板）１を複 数の取り付けボルト２で固定する。防水層３と補強板１ との間に区画形成された隙間Ｇに無収縮モルタルを流し 込んでモルタル層４を形成する。これにより防水層３、 モルタル層４及び補強板１が一体に結合して強固な補修 壁ができ上がる。この補強壁は取り付けボルト２により 既存壁に固定されているため、完全防水とともに強度的 に補強されて耐震性が向上したものとなる。

Подробнее
Номер записи: 25
12-12-2017 дата публикации

Storage control apparatus, method, and medium for scheduling volume recovery

Номер: US09841900B2
Автор: Chikashi Maeda, Guangyu ZHOU, Kazuhiko Ikeuchi, Kazuhiro URATA, Takeshi Watanabe, Yukari Tsuchiyama
Принадлежит: Fujitsu Ltd

A storage control apparatus, that controls a storage apparatus that includes a storage drive in which a plurality of logical volumes are set, includes a storage unit that stores load information for each of the plurality of logical volumes, and a control unit that determines to-be-rebuilt volumes, which are targets to be rebuilt, from the plurality of logical volumes, sequentially selects a logical volumes for which a volume-specific taken time is estimated, determines, for each selected logical volume, a volume-specific start time at which a rebuild will be started, estimates, by using the volume-specific start time and the load information about the selected logical volume, the volume-specific taken time for rebuilding the selected logical volume, and totals the volume-specific taken time estimated for each selected logical volume to calculate a total taken time taken for rebuilding the to-be-rebuilt volumes.

Подробнее
Номер записи: 26
27-12-2016 дата публикации

Control device, and storage system

Номер: US09529721B2
Автор: Chikashi Maeda, Kazuhiko Ikeuchi, Kazuhiro URATA, Kenji Kobayashi, Norihide Kubota, Ryota Tsukahara, Takeshi Watanabe, Yukari Tsuchiyama
Принадлежит: Fujitsu Ltd

A control device that controls a reading process of information stored in a unit storage area under control of the control device and a unit storage area under control of a different control device in a distributed manner, the control device includes a processor. The processor executes a procedure including determining whether or not the reading process is a sequential reading process that reads information stored in a unit storage area under control of the control device in an order of logical addresses and whether or not a reading target area of the sequential reading process includes a last address in the unit storage area, and reporting to the different control device control information related to a sequential reading process including the last address determined by the first determination unit.

Подробнее
Номер записи: 27
20-12-2016 дата публикации

Storage control apparatus, recording medium having stored therein storage control program and storage control method

Номер: US09524213B2
Автор: Chikashi Maeda, Guangyu ZHOU, Kazuhiko Ikeuchi, Kazuhiro URATA, Takeshi Watanabe, Yukari Tsuchiyama
Принадлежит: Fujitsu Ltd

A storage control apparatus starts, in a group of storage apparatuses that store constituent data that constitute redundant data in a distributed manner in units of a stripe, in regard to respective stripes of a plurality of stripes obtained from a group of target storage apparatuses excluding one of the storage apparatuses, a plurality of rebuilding processes for restoring the constituent data; decides, for each rebuilding process, a stripe for which the rebuilding process is to be performed next, according to access loads on the respective storage apparatuses of the group of target storage apparatuses; and obtains, for each rebuilding process, constituent data corresponding to the decided stripe from the group of target storage apparatuses and executing the rebuilding process, and executes the rebuilding process, to restore constituent data stored in the excluded storage apparatus from the obtained constituent data.

Подробнее
Номер записи: 28
22-11-2016 дата публикации

Storage control apparatus and storage control method

Номер: US09501406B2
Автор: Akihito Kobayashi, Chikashi Maeda, Guangyu ZHOU, Kazuhiko Ikeuchi, Kazuhiro URATA, Koutarou Nimura, Takeshi Watanabe, Yukari Tsuchiyama
Принадлежит: Fujitsu Ltd

A storage control apparatus is communicatively connected to a storage device. The storage device includes a plurality of SSDs. The storage control apparatus includes a processing request controller and a device load detector. The device load detector detects an overload of an SSD by detecting a processing delay of the SSD. When the device load detector has detected an overload of an SSD, the processing request controller suppresses issuance of a request to process write-back with respect to a group by delaying issuance of the write-back.

Подробнее
Номер записи: 29
22-11-2016 дата публикации

RAID configuration management device and RAID configuration management method

Номер: US09501362B2
Автор: Chikashi Maeda, Hidejirou Daikokuya, Kazuhiko Ikeuchi, Kazuhiro URATA, Kenji Kobayashi, Norihide Kubota, Ryota Tsukahara, Takeshi Watanabe, Yukari Tsuchiyama
Принадлежит: Fujitsu Ltd

A CM 10 includes an unmount detector 142 and a mount detector 144 that monitor unmount and mount of each disk 21 of a RAID configuration, a write request manager 143 that manages a write request for writing data to a disk 21 that is unmounted, a consistency determination unit 145 that, when mount of a disk 21 of the RAID configuration is detected, makes a determination on consistency of the data of the disk 21 in which mount is detected on the basis of the managed write request, and a RAID incorporating unit that, when it is determined that the data lacks consistency, performs processing for recovering data expected to be written by the write request issued to the disk 21 in which mount is detected while the disk 21 is unmounted and incorporates the disk 21 in an original RAID configuration.

Подробнее
Номер записи: 30