公开(公告)号：WO2015162634A1

公开(公告)日：2015-10-29

申请号：PCT/JP2014/002246

申请日：2014-04-21

Applicant: HITACHI, LTD.

Inventor： JOHRI, Abhishek ,  SATO, Takahito ,  SAITO, Hideo ,  KAWAGUCHI, Tomohiro

IPC: G06F13/10 ,  G06F12/00

CPC classification number: G06F11/0793 ,  G06F3/0617 ,  G06F3/0634 ,  G06F3/0635 ,  G06F3/0659 ,  G06F3/067 ,  G06F3/0683 ,  G06F3/0689 ,  G06F11/0727 ,  G06F11/0751 ,  G06F11/079

Abstract: Provided is an information storage system including a first storage apparatus configured to provide a first logical volume, a second storage apparatus configured to provide a second logical volume, and a quorum accessed from the first storage apparatus and the second storage apparatus and including information regarding states of the first storage apparatus and the second storage apparatus. The second storage apparatus is configured to, after detecting communication failure with the quorum, halt use of the quorum and check communication with the first storage apparatus for failure before responding to the host for each of read and write commands sent from the host.

Abstract translation: 提供一种信息存储系统，包括被配置为提供第一逻辑卷的第一存储装置，被配置为提供第二逻辑卷的第二存储装置和从第一存储装置和第二存储装置访问的法定数量，并且包括关于状态的信息 的第一存储装置和第二存储装置。 第二存储装置被配置为在从主机发送的读取和写入命令中的每一个响应主机之前，在检测到与该法定人数的通信故障之后，停止使用该法定数量并检查与第一存储装置的通信失败。

公开(公告)号：WO2014054074A1

公开(公告)日：2014-04-10

申请号：PCT/JP2012/006402

申请日：2012-10-04

Applicant: HITACHI, LTD.

Inventor： JOHRI, Abhishek ,  SAITO, Hideo ,  EGUCHI, Yoshiaki

IPC: G06F3/06

CPC classification number: G06F12/00 ,  G06F3/061 ,  G06F3/0635 ,  G06F3/0662 ,  G06F3/067

Abstract: The present invention allows distribution of load generated by a single VOL to multiple processor units, by dividing the VOL into a plurality of smaller fractions called sub-VOL and distributing their ownership to multiple processor units. The division of a VOL is performed by dividing the control information of the VOL for plurality of sub-VOLs and (A) assigning VOL ownership to a processor unit for processing the tasks that are related to complete VOL (e.g. VOL RESERVE command) and (B) assigning ownership of each sub-VOL to different processor units for processing tasks that are specific to that sub-VOL (e.g. Read/Write commands). Thus the load on a singular sub-VOL owner processor unit becomes only a fraction of the total load generated by the VOL. The present invention helps in achieving a relatively even distribution of load among processor units.

Abstract translation: 本发明允许通过将VOL划分成称为sub-VOL的多个较小部分并将其所有权分配给多个处理器单元来将由单个VOL生成的负载分配给多个处理器单元。 通过将VOL的多个子VOL的控制信息除以（A）将VOL所有权分配给用于处理与完成VOL（例如VOL RESERVE命令）相关的任务的处理器单元和（ B）将每个子VOL的所有权分配给不同的处理器单元，以处理特定于该子VOL的任务（例如，读/写命令）。 因此，单个子VOL所有者处理器单元上的负载仅仅是VOL产生的总负载的一小部分。 本发明有助于实现处理器单元之间相对均匀的负载分配。

公开(公告)号：WO2014108935A1

公开(公告)日：2014-07-17

申请号：PCT/JP2013/000087

申请日：2013-01-11

Applicant: HITACHI, LTD.

Inventor： SAITO, Hideo ,  NAKAGAWA, Hirotaka ,  GOTOH, Youichi ,  JOHRI, Abhishek ,  KAWAGUCHI, Tomohiro ,  NASHIMOTO, Kunihiko ,  MORI, Nobuhito ,  IKEGAYA, Naoko ,  YAMAMOTO, Akira

IPC: G06F3/06

CPC classification number: G06F3/0665 ,  G06F3/0605 ,  G06F3/0619 ,  G06F3/0644 ,  G06F3/0659 ,  G06F3/067 ,  G06F12/0866

Abstract: An example is a method of controlling a storage system for providing a virtual storage apparatus that includes virtual storage resources associated with real storage resources of real storage apparatus. It includes receiving a virtual storage resource control command of a predetermined type specifying a first virtual storage resource in the virtual storage apparatus and a second virtual storage resource associated with the first virtual storage resource; referring to management information for managing association relations between the virtual storage resources and the real storage resources, to identify a first real storage resource associated with the first virtual storage resource and a first real storage apparatus including the first real storage resource; and selecting a second real storage resource associated with the second virtual storage resource from real storage resources within the first real storage apparatus, or creating the second real storage resource within the first real storage apparatus.

Abstract translation: 一个例子是控制存储系统的方法，用于提供包括与真实存储装置的真实存储资源相关联的虚拟存储资源的虚拟存储装置。 它包括接收指定虚拟存储设备中的第一虚拟存储资源的预定类型的虚拟存储资源控制命令和与第一虚拟存储资源相关联的第二虚拟存储资源; 参考用于管理虚拟存储资源和真实存储资源之间的关联关系的管理信息，识别与第一虚拟存储资源相关联的第一真实存储资源和包括第一真实存储资源的第一真实存储装置; 以及从所述第一真实存储设备内的真实存储资源中选择与所述第二虚拟存储资源相关联的第二实际存储资源，或者在所述第一真实存储设备内创建所述第二真实存储资源。

公开(公告)号：WO2014106872A1

公开(公告)日：2014-07-10

申请号：PCT/JP2013/000005

申请日：2013-01-07

Applicant: HITACHI, LTD.

Inventor： NAKAGAWA, Hirotaka ,  SAITO, Hideo ,  MORI, Nobuhito ,  KAWAGUCHI, Tomohiro ,  JOHRI, Abhishek ,  IKEGAYA, Naoko ,  GOTO, Yoichi ,  NASHIMOTO, Kunihiko ,  YAMAMOTO, Akira

IPC: G06F3/06

CPC classification number: G06F17/30194 ,  G06F3/0605 ,  G06F3/0659 ,  G06F3/0665 ,  G06F3/067

Abstract: An example of the present invention is a storage system comprising a first real storage apparatus including a plurality of real resources. The first real storage apparatus includes: real resource groups allocated to a plurality of virtual storage apparatuses; first management information for associating virtual resource identifiers individually assigned to real resources in a namespace independently defined for each of the plurality of virtual storage apparatuses with real resource identifiers individually assigned to the real resources in a namespace defined for the first real storage apparatus; and a controller for receiving a command including a designation with a virtual resource identifier, converting the virtual resource identifier in the command into a real resource identifier with reference to the first management information, and processing the command with the converted real resource identifier.

Abstract translation: 本发明的一个实例是一种存储系统，包括包括多个实际资源的第一真实存储装置。 第一实际存储装置包括：分配给多个虚拟存储装置的实际资源组; 第一管理信息，用于将在多个虚拟存储设备中为每个虚拟存储设备独立地定义的命名空间中分别分配的虚拟资源标识符分别分配给在为第一真实存储设备定义的命名空间中分配给实际资源的实际资源标识符; 以及控制器，用于接收包括具有虚拟资源标识符的指定的命令，参考所述第一管理信息将所述命令中的虚拟资源标识符转换为真实资源标识符，以及用所转换的真实资源标识符处理所述命令。

公开(公告)号：WO2018235132A1

公开(公告)日：2018-12-27

申请号：PCT/JP2017/022553

申请日：2017-06-19

Applicant: HITACHI, LTD.

Inventor： JOHRI, Abhishek ,  HAYASAKA, Mitsuo ,  LE, Hieuhanh

IPC: G06F12/00 ,  G06F17/30

CPC classification number: G06F12/0871 ,  G06F2212/262

Abstract: A distributed storage system includes a first node group consisting of a plurality of nodes and a second node group consisting of a plurality of nodes. Each of the first node group and the second node group distributes and stores data of an assigned object to a plurality of constituent nodes. The first node group includes at least one first node shared with the second node group and at least one second node not shared with the second node group. The second node group includes the at least one first node and at least one third node not shared with the first node group.

公开(公告)号：WO2017090071A1

公开(公告)日：2017-06-01

申请号：PCT/JP2015/005914

申请日：2015-11-27

Applicant: HITACHI, LTD.

Inventor： JOHRI, Abhishek ,  HAYASAKA, Mitsuo

IPC: G06F12/02 ,  G06F3/06 ,  G06F17/30

CPC classification number: G06F12/023 ,  G06F3/06 ,  G06F17/30

Abstract: A computer system (e.g. a file system) for managing blocks, comprises a memory unit including a memory and a processing unit including a processor and coupled to the memory unit. The memory unit is configured to store metadata of data including objects. The metadata points to blocks storing the objects in a storage unit including multiple different sized blocks. The processing unit is configured to, for at least one of the objects, determine different sized blocks for storing the object, from among free blocks in the multiple different sized blocks of the storage unit.

Abstract translation: 用于管理块的计算机系统（例如文件系统）包括包含存储器的存储器单元和包括处理器并耦合到存储器单元的处理单元。 存储器单元被配置为存储包括对象的数据的元数据。 元数据指向将对象存储在包括多个不同大小块的存储单元中的块。 处理单元被配置为针对至少一个对象从存储单元的多个不同大小的块中的空闲块当中确定用于存储对象的不同大小的块。