Hitachi, Ltd.

Hitachi Vantara Corporation

Masanori Takada

Shuji Nakamura

Akira Yamamoto

Kentaro Shimada

Sadahiro Sugimoto

Hiroshi Hirayama

Katsuya Tanaka

Akihiko Araki

Makio Mizuno

Jun Kitahara

Naoya Okada

Yoshiaki Eguchi

Yasutomo Yamamoto

Tomohiro Kawaguchi

Yusuke Nonaka

Takayuki Fukatani

Masayuki Yamamoto

Yoshiki Kano

Hideaki Fukuda

Norio Chujo

Yoshihiro Yoshii

Nobuhiro Yokoi

Shintaro Kudo

Norio Simozono

Satoshi Kaneko

Akira Fujibayashi

Masahiro Arai

Hiroaki Akutsu

Masakuni Agetsuma

Mitsuo Hayasaka

Nagamasa Mizushima

Tomohiro Yoshihara

Akifumi Suzuki

Nobuyuki Minowa

Takanobu Suzuki

Sachie Tajima

Hajime Mori

Akiyoshi Tsuchiya

Hiroshi Nakagoe

Katsumi Ouchi

Kazushi Nakagawa

Naoki Moritoki

Kazumasa Matsubara

Miho Kobayashi

Susumu Tsuruta

Hiroyuki Osaki

Naruki Kurata

Masato Shimizu

Hiroshi Kanayama

Mitsuo Date

Tomoki Shoji

A storage system includes a plurality of storage controllers. The storage controller includes a processor, a memory, and a transfer device that processes control data for controlling an internal operation of the storage system, the control data being transmitted and received between the plurality of storage controllers. The processor accumulates the control data in the memory when a transfer request for the control data is generated, generates a write request for transmitting a plurality of the control data stored in the memory, and transmits the write request to the other storage controller. The transfer device writes a plurality of the control data included in the write request to the memory upon receiving the write request.

Storage system and method for transferring data thereof

A storage apparatus includes a first control device having a first memory, a second control device having a second memory, and a memory module having a third memory. The first memory and the second memory store drive control information including association between a logical address and a physical address, cache data in data I/O processing, and cache control information including association between a logical address of the cache data and a cache address of the cache data. The third memory stores the drive control information, dirty data of the cache data in the first memory, dirty data of the cache data in the second memory, and the cache control information. Even in a case where the control device or the memory module is blocked, the dirty data is set to be redundantly stored in each of different apparatuses.

Storage apparatus and control method for storage apparatus

A storage apparatus includes a first controller having a first memory, a second controller having a second memory, and a memory module having a third memory. The first memory stores drive control information including a correspondence between a logical address and a physical address, first cache data in a data input-output (I/O) process, and first cache control information including a correspondence between a logical address and a cache address of the first cache data. The second memory stores drive control information, second cache data in the data I/O process, and second cache control information including a correspondence between a logical address and a cache address of the second cache data. The third memory stores first cache data provided with redundancy and second cache data provided with redundancy.

In a storage device including a plurality of controllers for controlling data reading and writing operations with respect to at least one host computer, each of the controllers includes: a cache region to which a plurality of management units capable of temporarily storing the data are allocated in accordance with the data reading and writing operations; and a control unit for controlling the data reading and writing operations, and when an error occurs, the control unit determines whether or not an occurrence position of the error is in the cache region, and when it is determined that the occurrence position is in the cache region, the control unit excludes, among the plural management units, a specific management unit that contains the occurrence position from an allocation target in the cache region, to control the data reading and writing operations using remaining management units in the plural management units.

Storage device and a method of error processing thereof

When receiving power requirement for power control and performing power control of a target device in accordance with the received power requirement, based on power consumption for a performance of each component of the target device and a device configuration of the target device, power saving level management information is created, which respectively defines the performance of each component at each power saving level associated with each of a plurality of divided power consumption ranges of the target device, and based on a power consumption upper limit value or the power saving level of the target device designated as the received power requirement, the power saving level management information is referred to and the performance of each component is set to a performance of the power saving level according to the power requirement, respectively.

Power control apparatus and method

A data compression processing system includes: a selection unit configured to select a compression processing setting to be applied to processing target data from among a plurality of compression processing settings; and a compression processing unit configured to compress the processing target data according to the compression processing setting selected by the selection unit. The selection unit is configured to: receive a condition required for compression processing of the processing target data; apply a plurality of compression processing settings applicable to the processing target data to evaluation data to perform compression processing; select, from the plurality of compression processing settings, a setting that satisfies the condition when applied to the processing target data based on a result of the compression processing for the evaluation data; and manage the selected compression processing setting in association with the condition.

Data compression processing system and data compression processing method

A protocol chip transmits the request from the host apparatus to a first processor through a first address translation unit. A first processor transmits a response to the request from the host apparatus, to the protocol chip through the first address translation unit. When the first processor stops processing, an instruction to transmit the request from the host apparatus to a second processor is transmitted to the protocol chip. When receiving the instruction to transmit the request from the host apparatus to the second processor, the protocol chip transmits the request from the host apparatus to the second processor through a second address translation unit. The second processor transmits the response to the request from the host apparatus to the protocol chip through the second address translation unit.

Storage system

Example implementations described herein are directed to searching ML models to facilitate IO load prediction. Even if there is no existing ML model applicable to the underlying container, example implementations described herein obtain the ML model for the nearest container. Through such example implementations, the underlying systems can reduce the total ML models maintained for the prediction of IO load and can enhance ML models with enough learning data for each ML model.

Method of selecting a machine learning model for performance prediction based on versioning information

Example implementations described herein are directed to systems and methods to accelerating the time to identify the latest snapshot that is not infected by malware and swap the snapshot for an underlying volume for a host computer without needing to communicate with the storage administrator of the storage system. In example implementations described herein, an iterative process is utilized to traverse snapshots through a storage plug-in application until such a snapshot is identified. Through the example implementations described herein, such snapshots can be identified quickly in comparison to manual selection.

Accelerating method of snapshot investigation for rollback from ransomware

Embodiments described herein are directed to a cloud-bursting system utilizing optimal resources on a remote site within the range of requirements of business operation ordered by a user. Embodiments can involve receiving user requirements for the copy operation of a storage volume, and for a determination that the copy operation of the storage volume meets the user requirements, executing the copy operation on the storage volume from the first storage system to the second storage system; and continuously adjusting the end-point to facilitate a copy speed of the storage volume that meets the user requirements.

Resource allocation optimization for cloud bursting use case

Example implementations described herein are directed to systems and methods to create authorization rules and configurations automatically for each microservice, each of which rules are built from the front-end use case. The example implementations involve a public facing environment on a public cloud system, and a test environment deployed on a private cloud system that is isolated from the public cloud system that mirrors the public cloud system functionality for testing deployment of applications.

System and method of microservice-based application deployment with automating authorization configuration

Example implementations described herein are directed to management of a first storage system for an on-premise system and a second storage system for a public cloud system. Such example implementations can involve, responsive to an update to one or more of a plurality of snapshot volumes in the first storage system, updating first shared page information stored in the first storage system according to the update to the one or more snapshot volumes, the first shared page information indicative of pages shared between the plurality of snapshot volumes in the first storage system; transmitting instructions to the second storage system to copy the updates to the one or more snapshot volumes from the first shared page information to a second shared page information stored in the second storage system; and executing read or write operations made to the second storage system based on the second shared page information.

Caching meihod for hybrid cloud storage running dev/test on public cloud

A computing system that can maintain reliability required of a storage program while causing the storage program to operate on an operating system (OS) is provided. A processor of the computing system executes an OS controlling a hardware device and a storage program operating on the OS and using the hardware device via the OS. The OS identifies an error status of the hardware device when receiving a notification of an error that has occurred to the hardware device, and notifies the storage program that operates on the OS of the error status when the error status satisfies a predetermined condition. The storage program determines error handling on the hardware device on the basis of the error status, and requests the OS to perform the determined error handling. The OS performs the determined error handling on the hardware device.

Computing system and error handling method for computing system

Computer components, such as processors and storage devices, provide a performance and consumes an electric power within a range of an upper limit performance and an upper limit power consumption of a power state set for the component among a plurality of power states corresponding to a type of the component. A processor unit determines whether a budget power as a power consumption permitted for a target computer is equal to or more than a power consumption of the target computer or not. When the determination result is false, for at least one component of the target computer, the processor unit selects a power state based on at least one of a priority of an operation using the component and a data characteristic corresponding to the component among a plurality of types of power states corresponding to a type of the component as power state of the component.

Computer system and electric power control method for computer system

High reliability and high performance of a storage device formed of a Dual port NVMe SSD are achieved while preventing the risk of destruction of data. The storage device includes a main memory that belongs to each of two or more clusters and that stores data related to an IO request; and a processor belonging to each of the clusters controlling accesses to the main memory. The main memory includes a first region where writing from the memory drive is permitted and a second region where the writing is prohibited. The processor selects the first region as a transfer destination related to the IO request from the memory drive when the IO request is a first request, and selects the second region as the transfer destination related to the IO request from the memory drive while permitting writing to the second region when the IO request is a second request.

Storage device

Growing community of inventors

Yokohama, Japan

Masanori Takada