Hitachi, Ltd.

Canon Kabushiki Kaisha

Fujitsu Corporation

Fujitsu Hitachi Plasma Display Limited

Hoya Corporation

Hitachi Microcomputer System, Ltd.

Sharp Kabushiki Kaisha Corporation

Asahi Kogaku Kogyo Kabushiki Kaisha

Hosiden Corporation

Other

Nikon Corporation

Canon U.s.a., Inc.

Daicel Chemical Industries, Ltd.

Kabushiki Kaisha Meidensha

Hitachi Microcomputer Engineering, Ltd.

Akira Yamamoto

Masayuki Yamamoto

Yasutomo Yamamoto

Naoto Matsunami

Takao Satoh

Shuzo Iwanaga

Kazuhiro Yamada

Toshio Nakano

Shingo Okushima

Yoshihiro Asaka

Noriyasu Nagai

Takashi Oeda

Seiichiro Karita

Takatsuna Aoki

Yoshiaki Eguchi

Yasuyuki Mimatsu

Akio Saito

Hiroaki Akutsu

Kouji Arai

Sadahiro Sugimoto

Hideo Saito

Masaaki Iwasaki

Toshiaki Hirosawa

Yoshinori Ohira

Masahiko Sato

Junji Ogawa

Manabu Kitamura

Naoko Iwami

Yasunori Kaneda

Tomohiro Kawaguchi

Yoshiki Kano

Kazuhisa Fujimoto

Shoji Kodama

Koji Sonoda

Shuichi Kobayashi

Masanori Takada

Ai Satoyama

Ikuya Yagisawa

Kentaro Shimada

Kenji Yamagami

Tomohiro Yoshihara

Takahiro Yamamoto

Minoru Yoshida

Keiichiro Ishihara

Yusuke Nonaka

Jun Matsumoto

Yoshiyuki Nakagawa

Hiroki Tajima

Masakuni Agetsuma

Takashige Iwamura

Katsuya Tanaka

Akira Fujibayashi

Ryo Kasai

Hiroshi Hirayama

Atsushi Kawamura

Tetsuya Nakamura

Toru Nakakubo

Kenichi Takamoto

Takaki Nakamura

Naosato Taniguchi

Hisaharu Takeuchi

Yohsuke Ishii

Akira Deguchi

Yoshikazu Kanazawa

Tomokatsu Kishi

Hiroshi Murakami

Mitsuo Hayasaka

Yukio Ogawa

Akinobu Shimada

Norio Shimozono

Hiroshi Arakawa

Satoshi Kaneko

Takayuki Nagata

Nobuhiro Maki

Mitsuhiro Okada

Keisuke Hatasaki

Osamu Koyama

Hayato Kondo

Junichi Hara

Takao Sato

Satoru Watanabe

Hirotake Nozaki

Yoshiaki Kobayashi

Kenta Ninose

Satoshi Kimura

Shinji Fujiwara

Takeshi Shibata

Shoichi Yamazaki

Kazuyoshi Serizawa

Kenta Shiga

Takuya Iwano

Shunji Kawamura

Nagamasa Mizushima

Yasuo Watanabe

Shintaro Ito

Mitsuhiro Ikuta

Tsukasa Shibayama

Yoshihiko Suzuki

Wataru Okada

The present disclosure relates to optical system and display apparatus. An optical system guides a light beam from a display element to an exit pupil. The optical system includes a first optical element including a transmission surface, a reflection-transmission surface, and a reflection surface, and a negative lens including a concave surface on an exit pupil side. The light beam from the display element heads toward the exit pupil via the transmission surface, the reflection-transmission surface, the reflection surface, the reflection-transmission surface, and the negative lens in this order. A predetermined condition is satisfied.

Optical system and display apparatus

The present invention realizes a storage device that has a high data reduction effect without decreasing I/O performances. The storage device includes a processor, an accelerator, a memory, and a storage medium, the processor specifies data to be compressed that is data stored in the storage medium from data stored in the memory and transmits a compression instruction including information relating to the data to be compressed to the accelerator, and the accelerator reads the plurality of continuous items of data from the memory and compresses the plurality of items of data to be compressed obtained by excluding data that is not to be compressed from the plurality of items of data, based on the information relating to the data to be compressed received from the processor, to generate compressed data stored in the storage device.

Storage device and data processing method

A storage device manages data stored in a storage drive in a plurality of logical hierarchies. The plurality of logical hierarchies include a writing hierarchy above a hierarchy of a parity group including a plurality of storage drives. The storage device writes received host data in a free area in the writing hierarchy. In the data recovery process for replacing a failure storage drive with a new storage drive, the storage device executes the garbage collection process on a first logical area in the writing hierarchy associated with the first parity group including the failure storage drive. In the garbage collection process, valid data is selected from the first logical area and copied to a second logical area associated with a second parity group different from the first parity group.

Storage device and data recovery method by storage device

One or more storage systems are connected to one or more storage boxes comprising multiple storage devices. Multiple storage areas provided by one or more storage boxes include an allocated area, which is a storage area that is allocated to a virtual volume, and an empty area, which is a storage area that is not allocated to any logical volume. Multiple owner rights corresponding to multiple storage areas are set in one or more storage systems. A storage system having an empty area owner right changes an empty area to the allocated area by allocating the empty area. In a case where a configuration change (a relative change in the number of storage boxes with respect to the number of storage systems) is performed, a first storage system that exists after the configuration change sets, in the first storage system, either more or fewer owner rights than the owner rights, which have been allocated to the first storage system before the configuration change.

Compound storage system and storage control method to configure change associated with an owner right to set the configuration change

In a complex system including; one or more storage systems including a cache and a storage controller; and one or more storage boxes including a storage medium, the storage box generates redundant data from write data received from a server, and writes the write data and the redundant data to the storage medium. The storage box transmits the write data to the storage system when it is difficult to generate the redundant data or it is difficult to write the write data and the redundant data to the storage medium. The storage system stores the received write data in the cache.

Complex system and data transfer method

A storage system monitors the first access frequency of occurrence which is the access frequency of occurrence from a host device during a first period, and the second access frequency of occurrence which is the access frequency of occurrence from a host device during a second period shorter than the first period. Along with performing data relocation among the tiers (levels) in the first period cycle based on the first access frequency of occurrence, the storage system performs a decision whether or not to perform a second relocation based on the first access frequency of occurrence and the second access frequency of occurrence, synchronously with access from a host device. Here the threshold value utilized in a decision on whether or not to perform the first relocation is different from the threshold value utilized in a decision on whether or not to perform the second relocation.

Storage system for migrating data between tiers

One or a plurality of physical storage devices that provide a physical storage area are connected to first and second computers. The computer updates metadata indicating the address correspondence relationship between the logical address of the volume and the physical address of the physical storage area in the write processing performed based on a write request designating the volume. The first computer copies the metadata to the second computer while receiving the write request. When the address correspondence relationship indicated by the copied metadata portion is changed during copying of the metadata, the first computer updates the metadata portion and copies the metadata portion to the second computer.

Distributed storage system and storage control method

A scale-out storage system includes a plurality of computer nodes each of which has a memory and a processor, and a storage apparatus. The computer nodes have one or more redundancy groups each of which is a group for metadata protection. Each of the one or more redundancy groups includes two or more of the computer nodes including a primary node being a primary computer node and a secondary node being a secondary computer node, and a failover is performed from the primary node to the secondary node. The memory of the primary node has stored therein metadata related to the redundancy group and to be accessed for control. The metadata is redundantly stored in the memory of the primary node and the memory of the secondary node.

Scale-out storage system and storage control method

In write processing of a data set group to be written to be one or more data sets to be written, a storage system performs encoding processing including processing for generating a data model showing regularity of the data set group to be written and having one or more input values as an input and the data set group as an output. In the write processing, the storage system writes the data model generated in the encoding processing and associated with a key of the data set group to be written.

Storage system

The efficiency of the maintenance of a storage apparatus including a plurality of flash drives can be enhanced. In a storage apparatus including a plurality of SSDs and a CPU, the CPU specifies, based on lifetimes of the SSDs depending on amounts of data written to the SSDs, the SSD to be replaced on a scheduled maintenance date, gives notice of the SSD specified to be replaced, and copies data in the SSD to be replaced to another SSD by the scheduled maintenance date on which the replacement is to be performed.

Storage apparatus, maintenance support method, and maintenance support program

In a case of exchanging a migration source storage controller and a migration destination storage controller sharing one storage medium during replacement of storage devices, when hardware configurations or data management forms of the storage controllers are different, data in the storage medium cannot be shared even when data management information can be copied. Accordingly, a storage system, having a storage control unit and a storage drive provided with a storage medium, includes data management information for accessing data in the storage drive. A first storage control unit copies data management information about the data in the storage drive to a second storage control unit. When a write request is received from a host after copying of the data management information begins, each of the first storage and second storage control units stores write data related to the write request in a separate storage area of the storage drive.

Storage system and control method thereof

A storage system includes a plurality of storage controllers and a drive box including one or more non-volatile storage devices. The drive box includes a memory on which reading and writing are performed in a unit different from a unit for reading and writing the one or more non-volatile storage devices, and which stores control information to be used by the plurality of storage controllers, and a memory controller that enables each storage controller of the plurality of storage controllers to exclusively read and write the control information of the memory by arbitrating accesses to the memory from the plurality of storage controllers.

Storage system including a memory controller that enables each storage controller of a plurality of storage controllers to exclusively read and write control information of the memory

This invention provides a storage system enabling it to properly rebuild a storage device involved in failure. In the storage system, a controller repairs data for which an access request has been issued, returns a reply to the source of the access request, and stores the repaired data. As regards data for which access is not requested, the controller executes rebuilding of storage regions corresponding to rebuild management units in priority-based order and changes priority for executing the rebuilding, based on access frequencies for a first period and access frequencies for a second period that is shorter than the first period.

Storage system with multiple storage devices to store data

A storage system includes: a storage drive having a storage medium storing a data; and a plurality of storage control units having a processor, a memory, and a port to process the data input and output to and from the storage drive, in which information related to a list of the storage control units mounted on the storage system and a maximum number of the storage control units that can be mounted on the storage system is allowed to be stored, and in which, when the storage control unit is replaced, it is determined whether the configuration to be migrated from the storage control unit to be reduced to the storage control unit to be added is migrated directly or via another storage control unit based on the number of the mounted storage control units and the maximum number of the storage control units that can be mounted.

Storage controller replacement and firmware upgrade without service interruption

Each controller moves authority for access processing to data in a logical area allocated to the controller between the controllers, for a first storage area in which there is data related to the logical areas of the plurality of controllers by moving the authority for the access processing from a first controller to a second controller. Each of the first controller and the second controller writes data after update related to a write request to the storage area allocated to the own controller and deletes data before update in the first storage area, and moves data for which the own controller has the authority for the access processing in the first storage area to another storage area allocated to the own controller while taking over the allocation of the first storage area in relocation processing of relocating data.

Storage system and data management method of switching access authority

Growing community of inventors

Sagamihara, Japan

Akira Yamamoto