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公开(公告)号：US20250028470A1
公开(公告)日：2025-01-23
申请号：US18595610
申请日：2024-03-05
Applicant: Hitachi, Ltd.
Inventor： Yoshiki TAMURA , Hiroshi MIKI , Yusuke NONAKA , Yudai TAKAYAMA
IPC: G06F3/06
Abstract: There is provided a storage migration method including sending, by a maintenance PC, a power-off instruction for migration to a migration source storage, sending, by the migration source storage, storage configuration information to the maintenance PC, turning off the power of the migration source storage when it is confirmed that the maintenance PC has received the storage configuration information, sending, by the maintenance PC, the storage configuration information and a power-on instruction for migration to a migration destination storage, and outputting, by the maintenance PC, a migration completion notification when a disk drive relocated from the migration source storage can be confirmed to be set in the migration destination storage.
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公开(公告)号：US20240256167A1
公开(公告)日：2024-08-01
申请号：US18370014
申请日：2023-09-19
Applicant: Hitachi, Ltd.
Inventor： Shugo OGAWA , Yoshihiro YOSHII , Ryosuke TATSUMI , Tomohiro YOSHIHARA , Yusuke NONAKA , Hiroshi MIKI
IPC: G06F3/06
CPC classification number: G06F3/0643 , G06F3/0604 , G06F3/0673
Abstract: Performance deterioration of a storage system is prevented. A storage controller includes one or more processors, and one or more memories configured to store one or more programs to be executed by the one or more processors. The one or more processors are configured to execute conversion of converting metadata before conversion for controlling the storage system into metadata after conversion in a format corresponding to a new controller newly installed in the storage system, execute control of switching an access destination between the metadata before conversion and the metadata after conversion according to an access control code during the conversion, and access the metadata before conversion without using the access control code before start of the conversion.
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公开(公告)号：US20180173721A1
公开(公告)日：2018-06-21
申请号：US15579893
申请日：2015-07-27
Applicant: Hitachi, Ltd.
Inventor： Akihiko ARAKI , Yusuke NONAKA , Noboru MORISHITA
Abstract: This storage system comprises a block interface, a block control unit, a file control unit, and shared memory. The file control unit and block control unit are coupled via a first memory-through path structured to pass through a first area of the shared memory, and via a second memory-through path structured to pass through a second area of the shared memory. The block control unit has a protocol control unit and a virtual driver; exchanges control information for the file control unit with the file control unit via the first memory-through path; uses the virtual driver to convert an I/O request passed from the file control unit via the second memory-through path and processes the result with a protocol processing unit; and bypasses the virtual driver and uses the protocol processing unit to process a block I/O request transferred from the block interface via a physical path.
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公开(公告)号：US20170277914A1
公开(公告)日：2017-09-28
申请号：US15506967
申请日：2014-11-12
Applicant: Hitachi, Ltd.
Inventor： Akihiko ARAKI , Yusuke NONAKA , Masanori TAKADA , Naoya OKADA
CPC classification number: G06F3/064 , G06F3/0634 , G06F3/0635 , G06F11/20 , G06F11/2007 , G06F11/2017
Abstract: When mounting hardware which is coupled to another portion by a plurality of paths with different applications, despite the hardware being a single device, and a failure occurs in any of the paths, there is a risk that the failure may propagate to other components unless the other paths are also blocked. In order to solve the problem described above, in a storage apparatus to which a device coupled by a plurality of coupling paths with different applications can be mounted, the present invention determines a block range at the time of an occurrence of a failure to be a device and a plurality of coupling paths coupled to the device, manages the block range, and upon an occurrence of a failure, executes failure handling which involves blocking an appropriate block range determined in advance by referring to the information.
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公开(公告)号：US20180024766A1
公开(公告)日：2018-01-25
申请号：US15552616
申请日：2015-03-25
Applicant: Hitachi, Ltd.
Inventor： Masakuni AGETSUMA , Hiroaki AKUTSU , Yusuke NONAKA
Abstract: The present invention effectively utilizes computation resources by allocating the computation resources, in accordance with conditions, to a process that shares a computation resource with another process and a process that occupies a computation resource. Execution control causes a processor core allocated to a storage control process to be occupied by the storage control process, the execution control causes a processor core allocated to an application process to be shared with another process, and the execution control changes the number of processor cores allocated to the storage control process on the basis of I/O information indicating a state of an I/O.
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Patent Agency Ranking
公开(公告)号：US20180004676A1
公开(公告)日：2018-01-04
申请号：US15540681
申请日：2015-01-13
Applicant: Hitachi, Ltd.
Inventor： Miho IMAZAKI , Akira YAMAMOTO , Yusuke NONAKA , Tomohiro YOSHIHARA , Shunji KAWAMURA
IPC: G06F12/109 , G06F11/10
CPC classification number: G06F12/109 , G06F3/061 , G06F3/064 , G06F3/0665 , G06F3/0688 , G06F11/1076 , G06F12/0284 , G06F2212/1008 , G06F2212/262 , G06F2212/657
Abstract: 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.
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公开(公告)号：US20160342512A1
公开(公告)日：2016-11-24
申请号：US14424625
申请日：2014-01-21
Applicant: HITACHI, LTD.
Inventor： Yuki SAKASHITA , Shintaro KUDO , Yoshihiro YOSHII , Yusuke NONAKA
IPC: G06F12/0804 , G06F12/0866
CPC classification number: G06F12/0804 , G06F12/0866 , G06F12/0868 , G06F2212/1008 , G06F2212/281 , G06F2212/313
Abstract: The invention provides a technique for improving processing performance of I/O commands in a storage system in which ownership of each LU is introduced. The storage system includes: a disk device having storage regions that are managed as a plurality of logical units; a plurality of processors that process read commands to the disk device; and a cache that the processors can use to process the read commands. An owner processor that is in charge of processing to each logical unit is allocated to each logical unit. When decision is made that dirty data is not present in the cache in a target region of the read command, there are a case where the owner processor of a logical unit that includes the target region processes the read command, and a case where a non-owner processor, as the processor other than the owner processor, processes the read command.
Abstract translation: 本发明提供一种用于提高在其中引入了每个LU的所有权的存储系统中的I / O命令的处理性能的技术。 存储系统包括：具有作为多个逻辑单元管理的存储区域的磁盘设备; 将读取命令处理到所述磁盘设备的多个处理器; 以及处理器可用于处理读取命令的高速缓存。 负责处理每个逻辑单元的所有者处理器被分配给每个逻辑单元。 当在读取命令的目标区域中的高速缓存中不存在脏数据时，存在包括目标区域的逻辑单元的所有者处理器处理读取命令的情况， 作为除所有者处理器之外的处理器的所有者处理器处理读取命令。
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公开(公告)号：US20150363254A1
公开(公告)日：2015-12-17
申请号：US14762850
申请日：2013-04-23
Applicant: HITACHI, LTD.
Inventor： Ai SATOYAMA , Yoshiaki EGUCHI , Yusuke NONAKA
IPC: G06F11/07
CPC classification number: G06F11/0772 , G06F11/0727 , G06F11/073 , G06F11/0751 , G06F11/0784 , G06F11/1484 , G06F11/2094
Abstract: Failures in a storage system are managed at low cost and with high reliability. A storage system is coupled to a file command issuing apparatus and a block command issuing apparatus, and processes commands from both. The storage system is provided with: a first control portion which is provided extending across a plurality of clusters and which is configured to control block access requests to a disk device; a plurality of second control portions which are configured to process file access requests and provided respectively in the clusters, and operate on virtual machines managed by a virtualization control portion; failure detecting portions which are configured to detect failures within each of the clusters; and a failure information management portion which is provided in the first control portion and which is configured to consolidate and manage failure information relating to failures detected by the failure detecting portions.
Abstract translation: 存储系统中的故障以低成本和高可靠性进行管理。 存储系统耦合到文件命令发布装置和块命令发布装置，并且处理来自两者的命令。 所述存储系统具有：第一控制部分，其被设置为跨越多个集群延伸并且被配置为控制对盘装置的块访问请求; 多个第二控制部分，被配置为处理文件访问请求并分别在集群中提供，并对由虚拟化控制部分管理的虚拟机进行操作; 故障检测部，被配置为检测每个所述簇内的故障; 以及故障信息管理部，其设置在所述第一控制部中，并且被配置为合并和管理与所述故障检测部所检测到的故障有关的故障信息。
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公开(公告)号：US20130346689A1
公开(公告)日：2013-12-26
申请号：US14013814
申请日：2013-08-29
Applicant: Hitachi, Ltd.
Inventor： Akihiko ARAKI , Yusuke NONAKA
IPC: G06F12/08
CPC classification number: G06F12/0871 , G06F12/0246 , G06F12/0873 , G06F12/121 , G06F2212/1021 , G06F2212/222 , G06F2212/262 , G06F2212/282 , G06F2212/466 , G06F2212/7208
Abstract: An embodiment of this invention divides a cache memory of a storage system into a plurality of partitions and information in one or more of the partitions is composed of data different from user data and including control information. The storage system dynamically swaps data between an LU storing control information and a cache partition. Through this configuration, in a storage system having an upper limit in the capacity of the cache memory, a large amount of control information can be used while access performance to control information is kept.
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公开(公告)号：US20190073159A1
公开(公告)日：2019-03-07
申请号：US16081254
申请日：2016-09-27
Applicant: HITACHI, LTD.
Inventor： Takao YOSHIKAWA , Yusuke NONAKA , Jin CHOI , Masahide KAWARASAKI
Abstract: A storage controller measures a RAID group (RG) operating time, which is the operating time of an RG. The storage controller then corrects the measured RG operating time, which is used to calculate the operating rate of the RG, on the basis of a correction coefficient associated with the type of the physical devices (PDEVs) constituting the RG, and on the basis of the RG backend multiplicity, which is the multiplicity of the I/O commands transmitted to the RG.
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