公开(公告)号：US20210294701A1

公开(公告)日：2021-09-23

申请号：US17017962

申请日：2020-09-11

Applicant: Hitachi, Ltd.

Inventor： Ai SATOYAMA ,  Tomohiro KAWAGUCHI

IPC: G06F11/14

Abstract: There is a need to backup data consistent with data in an online volume of local storage (a storage system provided by a person different from the one who provides the cloud-based storage system) in a hybrid cloud without degrading I/O performance of the online volume. The local storage generates a backup area where data written to the online volume is backed up. The local storage associates the backup area with a server system that provides access to cloud storage from the local storage. The local storage writes the data attached to a write request to the online volume and backs up the data in the backup area. The local storage transmits the data from the backup area to the server system to write the data to the cloud storage.

公开(公告)号：US20210064638A1

公开(公告)日：2021-03-04

申请号：US16805901

申请日：2020-03-02

Applicant: HITACHI, LTD.

Inventor： Ai SATOYAMA ,  Akira DEGUCHI

IPC: G06F16/27

Abstract: A first storage system of a remote copy system includes a data volume, a journal volume, and a storage controller. When an operation is received from a first server system, based on the operation, the storage controller executes any of a work of storing the update content by the operation in the journal volume or a work of executing the operation when the operation is received.

公开(公告)号：US20200042416A1

公开(公告)日：2020-02-06

申请号：US16295692

申请日：2019-03-07

Applicant: HITACHI, LTD.

Inventor： Ai SATOYAMA ,  Tomohiro KAWAGUCHI

IPC: G06F11/30 ,  G06F11/20 ,  G06F11/34 ,  G06F3/06 ,  G06F11/10

Abstract: An object of the present invention is to provide a redundant information processing system that can continue its operation without stopping as much as possible. To achieve this, the information processing system includes multiple storage nodes including processors, memories, and storage devices, as well as a network for connecting the storage nodes. The processor of at least one storage node performs the steps of: obtaining the configuration information of the information processing system; obtaining first failure information related to a first failure occurred in the information processing system; calculating the availability level of the information processing system when a second failure further occurs, based on the configuration information and the first failure information; and controlling the operation of the system based on the availability level. Then, the processor outputs a notification.

公开(公告)号：US20190243582A1

公开(公告)日：2019-08-08

申请号：US16330944

申请日：2017-06-20

Applicant: HITACHI, LTD.

Inventor： Ai SATOYAMA ,  Tomohiro KAWAGUCHI ,  Yoshihiro YOSHII

IPC: G06F3/06 ,  G06F12/02 ,  G06F12/10

CPC classification number: G06F3/0661 ,  G06F3/06 ,  G06F3/0604 ,  G06F3/0673 ,  G06F12/02 ,  G06F12/0253 ,  G06F12/04 ,  G06F12/10 ,  G06F2212/1044 ,  G06F2212/657

Abstract: When a real area is allocated to a write destination virtual area in a virtual volume, a storage device determines whether or not a size of compressed new data is larger than a size of the allocated real area. In a case where the determination result is true, the storage device determines whether or not there is one or more real areas having a size equal to or larger than the size of the compressed new data and including a garbage area that is a real area serving as garbage. In a case where the determination result is true, the storage device selects one or more real areas including the garbage area, allocates, instead of the allocated real area, the selected one or more real areas to the write destination virtual area, and manages the allocated real area as a garbage area.

公开(公告)号：US20150304423A1

公开(公告)日：2015-10-22

申请号：US14657287

申请日：2015-03-13

Applicant: Hitachi, Ltd.

Inventor： Ai SATOYAMA ,  Yoshiaki EGUCHI

IPC: H04L29/08 ,  G06F9/455

CPC classification number: H04L67/1097 ,  G06F9/455 ,  G06F9/45558 ,  G06F13/10 ,  G06F2009/45579

Abstract: A computer system includes a first server computer, a second server computer, a nonvolatile memory device, and a storage controller connected to the first server computer and the second server computer via PCI-Express, and connected to the nonvolatile memory device. The storage controller provides a storage area in the nonvolatile memory device as a shared data area for the first server computer and the second server computer. A server computer, which is each of the first and second server computers, stores a program that issues an NVM-Express command that is a command conforming to an NVM-Express standard. The program instructs the server computer to access the shared data area via PCI-Express by instructing the server computer to issue the NVM-Express command that specifies a namespace associated with the shared data area.

Abstract translation: 计算机系统包括通过PCI-Express连接到第一服务器计算机和第二服务器计算机的第一服务器计算机，第二服务器计算机，非易失性存储器装置和存储控制器，并连接到非易失性存储器件。 存储控制器在非易失性存储器装置中提供存储区域作为第一服务器计算机和第二服务器计算机的共享数据区域。 作为第一和第二服务器计算机中的每一台的服务器计算机存储发出作为符合NVM-Express标准的命令的NVM-Express命令的程序。 该程序指示服务器计算机通过PCI-Express访问共享数据区域，指示服务器计算机发出指定与共享数据区域相关联的命名空间的NVM-Express命令。

公开(公告)号：US20150006817A1

公开(公告)日：2015-01-01

申请号：US14484395

申请日：2014-09-12

Applicant: HITACHI, LTD.

Inventor： Daisuke ORIKASA ,  Ken MATSUDA ,  Yutaka TAKATA ,  Yoshiaki EGUCHI ,  Ai SATOYAMA ,  Yoichi MIZUNO

IPC: G06F3/06

CPC classification number: G06F3/0632 ,  G06F3/0608 ,  G06F3/061 ,  G06F3/0611 ,  G06F3/0647 ,  G06F3/0665 ,  G06F3/0685 ,  G06F3/0689 ,  G06F2003/0692

Abstract: Multiple storage area groups into which multiple storage areas provided by multiple storage devices are classified with reference to storage area attributes are managed. The multiple logical volumes to which, in accordance with a write request to at least one address included in multiple addresses in the logical volume, at least one storage area included in the multiple storage areas is allocated are provided. In accordance with the access condition of the at least one address in the logical volume, the data written to the at least one address by the write request is migrated from the at least one storage area included in one of the multiple storage area groups to at least one storage area in another storage area group included in the multiple storage area groups.

Abstract translation: 管理由多个存储装置提供的多个存储区域参照存储区域属性分类的多个存储区域组。 提供了多个逻辑卷，根据对包括在逻辑卷中的多个地址中的至少一个地址的写入请求，分配多个存储区域中包括的至少一个存储区域。 根据逻辑卷中的至少一个地址的访问条件，通过写请求写入到至少一个地址的数据从包括在多个存储区域组之一中的至少一个存储区域迁移到 包括在多个存储区域组中的另一个存储区域组中的至少一个存储区域。