公开(公告)号：US20180314466A1

公开(公告)日：2018-11-01

申请号：US15772098

申请日：2016-01-22

Applicant: Hitachi, Ltd.

Inventor： Takanobu SUZUKI ,  Masakuni AGETSUMA ,  Hiroaki AKUTSU ,  Sachie TAJIMA

IPC: G06F3/06 ,  G06F12/0871

Abstract: The computer system executes a storage program that operates on an OS to provide a logical volume to a host. The computer system includes volume management information including information on a storage function to be applied to the logical volume provided by the storage program. Upon receiving an I/O request for the logical volume from the host, the OS determines whether it is necessary for the storage program to perform an I/O process on the basis of the information on the storage function to be applied to the logical volume by referring to the volume management information. When it is determined that the I/O process is necessary, the OS communicates with the storage program and the storage program executes the I/O process. When it is determined that it is not necessary for the storage program to perform the I/O process, the OS outputs an I/O response to the host.

公开(公告)号：US20160378533A1

公开(公告)日：2016-12-29

申请号：US15035490

申请日：2014-02-17

Applicant: HITACHI, LTD.

Inventor： Tadashi TAKEUCHI ,  Sachie TAJIMA

IPC: G06F9/455 ,  G06F9/50

CPC classification number: G06F9/45558 ,  G06F9/5011 ,  G06F9/5022 ,  G06F9/5077 ,  G06F11/1484 ,  G06F11/3409 ,  G06F2009/45579

Abstract: A simple hypervisor, in addition to a hypervisor, is operated on a computer. A guest OS, the continued operations of which need to be guaranteed, when a fault occurs in the hypervisor is operated on the simple hypervisor, and the other guest OSs are operated on the hypervisor. The hypervisor performs resource scheduling (determining of resources to be allocated to or deallocated from each guest OS) and the simple hypervisor executes, in place of the simple hypervisor, allocation or deallocation of resources to or from the guest OS, the continued operations of which need to be guaranteed.

Abstract translation: 除了管理程序之外，还有一个简单的管理程序在计算机上运行。 在虚拟机管理程序发生故障时，需要保证持续运行的客户操作系统，在简单的管理程序中运行，其他客户操作系统在管理程序上运行。 虚拟机管理程序执行资源调度（确定要分配给每个客户OS的资源或从每个客户OS分配的资源），并且简单的虚拟机管理程序代替简单的虚拟机管理程序，执行向客户操作系统或从客户操作系统分配或分配资源，其继续操作 需要保证。

公开(公告)号：US20240231707A9

公开(公告)日：2024-07-11

申请号：US18119943

申请日：2023-03-10

Applicant: Hitachi, Ltd.

Inventor： Sachie TAJIMA ,  Yoshinori OHIRA ,  Shintaro ITO ,  Takahiro YAMAMOTO ,  Hiroto EBARA

IPC: G06F3/06

CPC classification number: G06F3/068 ,  G06F3/0604 ,  G06F3/0638

Abstract: The storage system is a storage system comprising a plurality of storage nodes each including a non-volatile storage device, a storage controller that processes data read/write to the storage device, and a volatile memory, in which the storage controller stores data related to the data write in the memory, stores data that needs to be non-volatile among the data stored in the memory as log data in the storage device, makes the log data stored in the storage device redundant among a plurality of storage nodes, and performs a recovery process for the log data when a problem occurs in the log data stored in the storage device of one of the storage nodes.

公开(公告)号：US20180203733A1

公开(公告)日：2018-07-19

申请号：US15743630

申请日：2015-10-02

Applicant: HITACHI, LTD.

Inventor： Sachie TAJIMA ,  Masakuni AGETSUMA ,  Takanobu SUZUKI ,  Akihiko ARAKI

IPC: G06F9/50 ,  G06F13/28 ,  G06F12/06

CPC classification number: G06F9/5016 ,  G06F9/5027 ,  G06F12/0646 ,  G06F12/0813 ,  G06F13/10 ,  G06F13/28 ,  G06F2212/1048 ,  G06F2212/604 ,  G06F2212/6042 ,  G06F2213/2806

Abstract: By assigning a physically continuous memory area to a virtual storage apparatus operated on an OS, the performance of the virtual storage apparatus is secured. A processor operates an OS, and the processor executes a plurality of processes on the OS. The plurality of processes includes a first virtual storage apparatus. The first virtual storage apparatus executes an I/O process, and includes a cache for storing data that is subjected to the I/O process. The processor assigns a resource in a computer to the plurality of processes, and the processor creates area information that indicates physical addresses assigned to the processes in a memory. On the basis of the area information, the processor selects a continuous area, which is a physically continuous area from the memory and assigns the continuous area to the cache.

公开(公告)号：US20130318215A1

公开(公告)日：2013-11-28

申请号：US13898797

申请日：2013-05-21

Applicant: HITACHI, LTD.

Inventor： Sachie TAJIMA

IPC: H04L12/24

CPC classification number: H04L41/08 ,  H04L41/0846 ,  H04L41/0853

Abstract: In the case of switching the current server to a new server, the redundant configuration of the network devices in the current server is inherited. In the case of transferring a system on a transfer source server, which includes a plurality of network devices provided with a redundant setting, from the transfer source server to a virtual server of the new server, a virtualization system of the new server obtains unshared information of making the plurality of network devices of the transfer source unshared, and then makes the plurality of virtual network devices of the new server correspond separately to the plurality of network devices provided to the new server with reference to the unshared information obtained.

Abstract translation: 在将当前服务器切换到新服务器的情况下，继承当前服务器中网络设备的冗余配置。 在将包括多个具有冗余设置的网络设备的传输源服务器上的系统从传输源服务器传送到新服务器的虚拟服务器的情况下，新服务器的虚拟化系统获得非共享信息 使得所述传送源的所述多个网络设备未共享，然后参照所获得的所述非共享信息，使所述新服务器的所述多个虚拟网络设备分别对应于提供给所述新服务器的所述多个网络设备。

公开(公告)号：US20240134575A1

公开(公告)日：2024-04-25

申请号：US18119943

申请日：2023-03-10

Applicant: Hitachi, Ltd.

Inventor： Sachie TAJIMA ,  Yoshinori OHIRA ,  Shintaro ITO ,  Takahiro YAMAMOTO ,  Hiroto EBARA

IPC: G06F3/06

CPC classification number: G06F3/068 ,  G06F3/0604 ,  G06F3/0638

Abstract: The storage system is a storage system comprising a plurality of storage nodes each including a non-volatile storage device, a storage controller that processes data read/write to the storage device, and a volatile memory, in which the storage controller stores data related to the data write in the memory, stores data that needs to be non-volatile among the data stored in the memory as log data in the storage device, makes the log data stored in the storage device redundant among a plurality of storage nodes, and performs a recovery process for the log data when a problem occurs in the log data stored in the storage device of one of the storage nodes.

公开(公告)号：US20230176732A1

公开(公告)日：2023-06-08

申请号：US17693109

申请日：2022-03-11

Applicant: Hitachi, Ltd.

Inventor： Sachie TAJIMA ,  Shintaro ITO ,  Takahiro YAMAMOTO ,  Yoshinori OHIRA

IPC: G06F3/06

CPC classification number: G06F3/0607 ,  G06F3/067 ,  G06F3/0613 ,  G06F3/0632

Abstract: The invention is to efficiently exchange storage programs. A storage program in an active state and a storage program in a standby state in a storage program group each change metadata thereof when the storage program in the active state writes data. When update of the storage programs including arranging post-update storage programs in storage nodes and generating new-version metadata based on old - version metadata by the post-update storage programs is to be performed, the post-update storage program in the standby state generates the new-version metadata based on the old-version metadata is performed for the storage programs in the plurality of storage nodes while replacing the active state and the standby state of the storage programs with each other in the plurality of storage programs in the storage program group.

公开(公告)号：US20180004447A1

公开(公告)日：2018-01-04

申请号：US15543308

申请日：2015-01-29

Applicant: Hitachi, Ltd.

Inventor： Yoshinori OOHIRA ,  Nobuhiro MAKI ,  Wataru OKADA ,  Tadashi TAKEUCHI ,  Sachie TAJIMA

IPC: G06F3/06

Abstract: The storage system is capable of creating one or more virtual storage subsystems to which virtual resources having logically divided a processing capacity of the physical resources are allocated, and upon creating a virtual volume for receiving I/O requests from the host within the virtual storage subsystem, the virtual storage subsystem allocates the virtual resource to the virtual volume, and when an I/O request to the virtual volume is received from the host, performs processing related to the I/O request using the virtual resource having been allocated. According further to the storage system, after allocating the virtual resource to the virtual volume, the storage system raises a utilization rate of the virtual resource allocated to the virtual volume in a stepwise manner.

公开(公告)号：US20150378892A1

公开(公告)日：2015-12-31

申请号：US14766608

申请日：2013-09-26

Applicant: HITACHI, LTD.

Inventor： Sachie TAJIMA ,  Tadashi TAKEUCHI

IPC: G06F12/08 ,  G06F9/455

CPC classification number: G06F12/0802 ,  G06F9/45558 ,  G06F9/5022 ,  G06F12/0848 ,  G06F2009/45583 ,  G06F2212/152 ,  G06F2212/6042

Abstract: In a computer system in which a virtualization control unit controls a plurality of virtual machines, if memory is collected regardless of a memory usage status of the virtual machine, cache miss increases and an IO performance of overall system deteriorates. In order to solve this problem, a usage status of a cache region within a memory which is utilized by each OS that the plurality of the virtual machines has, and based on a monitoring result, the virtualization control unit decides an allocation region of the memory as a collection target among the allocation region of the memory already allocated to each OS, and collects the allocation region of the memory as the collection target from the OS as a current allocation destination.

Abstract translation: 在其中虚拟化控制单元控制多个虚拟机的计算机系统中，如果存储器被收集而不管虚拟机的存储器使用状态如何，则高速缓存未命中增加，并且整个系统的IO性能恶化。 为了解决这个问题，由多个虚拟机具有的每个OS使用的存储器内的高速缓存区域的使用状态，并且基于监视结果，虚拟化控制单元决定存储器的分配区域 作为已经分配给每个OS的存储器的分配区域中的收集目标，并且从作为当前分配目的地的OS收集作为收集目标的存储器的分配区域。

公开(公告)号：US20240377981A1

公开(公告)日：2024-11-14

申请号：US18461997

申请日：2023-09-06

Applicant: Hitachi, Ltd.

Inventor： Shintaro ITO ,  Sachie TAJIMA ,  Takahiro YAMAMOTO ,  Yoshinori OHIRA

IPC: G06F3/06

Abstract: A storage system having both a high performance and high reliability is implemented. The storage system includes a plurality of storage nodes each including a processor and a memory, and a storage device. Each of the plurality of storage nodes includes a storage controller configured to run on the processor, the plurality of storage controllers include an active storage controller configured to process data output to and received from the storage device, and a standby storage controller configured to take over the processing of the data from the active storage controller, each of the active storage controller and the standby storage controller is allocated with a storage area of the memory, and the storage node changes an amount of a memory capacity allocated for the storage controller of the self-node when a state of the storage controller is switched between a standby state and an active state.