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    SYNCHRONOUS LOCAL AND CROSS-SITE FAILOVER IN CLUSTERED STORAGE SYSTEMS
    1.
    发明申请
    SYNCHRONOUS LOCAL AND CROSS-SITE FAILOVER IN CLUSTERED STORAGE SYSTEMS 审中-公开
    集群存储系统中的同步本地和跨站点故障

    公开(公告)号：WO2014026025A1

    公开(公告)日：2014-02-13

    申请号：PCT/US2013/054180

    申请日：2013-08-08

    Applicant: NETAPP, INC.

    Inventor： COATNEY, Susan ,  BOLT, Thomas B. ,  LAMBERT, Laurent ,  RAMASUBRAMANIAM, Vaiapuri ,  PATEL, Chaitanya ,  REDDY, Sreelatha ,  KEREMANE, Hrishikesh ,  KADAYAM, Harihara

    IPC: G06F13/14 ,  G06F12/00

    CPC classification number: G06F11/2023 ,  G06F11/20 ,  G06F11/2058 ,  G06F11/2092 ,  G06F11/2097 ,  G06F12/0802 ,  G06F12/0866 ,  G06F2212/286

    Abstract: Synchronous local and cross-site switchover and switchback operations of a node in a disaster recovery (DR) group are described. In one embodiment, during switchover, a takeover node receives a failover request and responsively identifies a first partner node in a first cluster and a second partner node in a second cluster. The first partner node and the takeover node form a first high-availability (HA) group and the second partner node and a third partner node in the second cluster form a second HA group. The first and second HA groups form the DR group and share a storage fabric. The takeover node synchronously restores client access requests associated with a failed partner node at the takeover node.

    Abstract translation: 描述灾难恢复（DR）组中节点的同步本地和跨站点切换和切换操作。 在一个实施例中，在切换期间，接管节点接收故障转移请求并且响应地识别第一集群中的第一伙伴节点和第二集群中的第二伙伴节点。 第一伙伴节点和接管节点形成第一高可用性（HA）组，第二伙伴节点和第二集群中的第三伙伴节点形成第二HA组。 第一和第二HA组形成DR组并共享存储结构。 接管节点同步地恢复与接管节点处的失败伙伴节点相关联的客户端访问请求。

    DYNAMIC MIRRORING
    2.
    发明申请
    DYNAMIC MIRRORING 审中-公开
    动态镜像

    公开(公告)号：WO2016195841A1

    公开(公告)日：2016-12-08

    申请号：PCT/US2016/029109

    申请日：2016-04-25

    Applicant: NETAPP, INC.

    Inventor： KEREMANE, Hrishikesh ,  AYYAPPAN, Iswarya ,  JOSEPH, Allen, Rintoul Keeranchira ,  RAMASUBRAMANIAM, Vaiapuri ,  CHAUHAN, Jitendra, Pratap Singh

    IPC: G06F11/20

    CPC classification number: G06F11/2069 ,  G06F11/2058 ,  G06F11/2082

    Abstract: One or more techniques and/or systems are provided for dynamic mirroring. A first storage node and the second storage node within a first storage cluster may locally mirror data between one another based upon a local failover partnership. The first storage node and a third storage node within a second storage cluster may remotely mirror data between one another based upon a primary disaster recovery partnership. If the third storage node fails, then the first storage node may remotely mirror data to a fourth storage node within the second storage cluster based upon an auxiliary disaster recovery partnership. In this way, data loss protection for the first storage node may be improved, such that the fourth storage node provide clients with access to mirrored data from the first storage node in the event the second storage node and/or the third storage node are unavailable when the first storage node fails.

    Abstract translation: 提供一种或多种技术和/或系统用于动态镜像。 基于本地故障切换伙伴关系，第一存储集群内的第一存储节点和第二存储节点可以在彼此之间本地镜像数据。 基于主灾难恢复伙伴关系，第二存储集群内的第一存储节点和第三存储节点可以彼此远程镜像数据。 如果第三存储节点发生故障，则第一存储节点可以基于辅助灾难恢复伙伴关系将数据远程镜像到第二存储集群内的第四存储节点。 以这种方式，可以改善第一存储节点的数据丢失保护，使得第四存储节点在第二存储节点和/或第三存储节点不可用的情况下向客户端提供对来自第一存储节点的镜像数据的访问 当第一个存储节点发生故障时。

    NON-DISRUPTIVE CONTROLLER REPLACEMENT IN A CROSS-CLUSTER REDUNDANCY CONFIGURATION
    3.
    发明申请
    NON-DISRUPTIVE CONTROLLER REPLACEMENT IN A CROSS-CLUSTER REDUNDANCY CONFIGURATION 审中-公开
    十字架冗余配置中的非破坏性控制器替换

    公开(公告)号：WO2016077562A1

    公开(公告)日：2016-05-19

    申请号：PCT/US2015/060345

    申请日：2015-11-12

    Applicant: NETAPP, INC.

    Inventor： PANARA, Amit V. ,  PATEL, Chaitanya V. ,  KEREMANE, Hrishikesh ,  MAJMUDAR, Pankti Vinay ,  UNNIKRISHNAN, Santhosh ,  ELPULA, Sravan Kumar ,  COATNEY, Susan M.

    IPC: G06F3/06 ,  G06F11/20

    CPC classification number: G06F11/2092 ,  G06F3/0617 ,  G06F3/0629 ,  G06F3/0632 ,  G06F3/0653 ,  G06F3/067 ,  G06F11/2017 ,  G06F11/2071 ,  G06F11/2097

    Abstract: During a storage redundancy giveback from a first node to a second node following a storage redundancy takeover from the second node by the first node, the second node is initialized in part by receiving a node identification indicator from the second node. The node identification indicator is included in a node advertisement message sent by the second node during a giveback wait phase of the storage redundancy giveback. The node identification indicator includes an intra-cluster node connectivity identifier that is used by the first node to determine whether the second node is an intra-cluster takeover partner. In response to determining that the second node is an intra-cluster takeover partner, the first node completes the giveback of storage resources to the second node.

    Abstract translation: 在从第一节点从第二节点接收存储冗余之后，从第一节点到第二节点的存储冗余中，第二节点通过从第二节点接收节点识别指示符而被初始化。 节点识别指示符包括在由存储冗余回授的回馈等待阶段由第二节点发送的节点通告消息中。 节点识别指示符包括簇内节点连接性标识符，该标识符由第一节点用于确定第二节点是否是集群内收购伙伴。 响应于确定第二节点是群内接管伙伴，第一节点完成对第二节点的存储资源的回馈。

    IMPLEMENTING AUTOMATIC SWITCHOVER
    4.
    发明申请
    IMPLEMENTING AUTOMATIC SWITCHOVER 审中-公开
    实施自动切换

    公开(公告)号：WO2017070644A1

    公开(公告)日：2017-04-27

    申请号：PCT/US2016/058374

    申请日：2016-10-24

    Applicant: NETAPP, INC.

    Inventor： KEREMANE, Hrishikesh ,  SINGH, Vijay

    IPC: G06F11/20

    CPC classification number: G06F11/2069 ,  G06F11/0727 ,  G06F11/0757 ,  G06F11/2092 ,  G06F2201/805

    Abstract: One or more techniques and/or computing devices are provided for automatic switchover implementation. For example, a first storage controller, of a first storage cluster, may have a disaster recovery relationship with a second storage controller of a second storage cluster. In the event the first storage controller fails, the second storage controller may automatically switchover operation from the first storage controller to the second storage controller for providing clients with failover access to data previously accessible to the clients through the first storage controller. The second storage controller may detect, cross-cluster, a failure of the first storage controller utilizing remote direct memory access (RDMA) read operations to access heartbeat information, heartbeat information stored within a disk mailbox, and/or service processor traps. In this way, the second storage controller may efficiently detect failure of the first storage controller to trigger automatic switchover for non-disruptive client access to data.

    Abstract translation: 提供一种或多种技术和/或计算设备用于自动切换实现。 例如，第一存储集群的第一存储控制器可以具有与第二存储集群的第二存储控制器的灾难恢复关系。 在第一存储控制器发生故障的情况下，第二存储控制器可以自动地将操作从第一存储控制器切换到第二存储控制器，以向客户端提供对客户端通过第一存储控制器先前可访问的数据的故障转移访问。 第二存储控制器可以利用远程直接存储器访问（RDMA）读取操作访问心跳信息，存储在磁盘邮箱内的心跳信息和/或服务处理器陷阱来检测第一存储控制器的故障。 通过这种方式，第二存储控制器可以有效地检测到第一存储控制器的故障，从而触发自动切换以实现无中断的客户端访问数据。

    SYSTEM AND METHOD FOR MIGRATION OF DATA CLONES
    6.
    发明申请
    SYSTEM AND METHOD FOR MIGRATION OF DATA CLONES 审中-公开
    数据克隆的系统和方法

    公开(公告)号：WO2012149220A2

    公开(公告)日：2012-11-01

    申请号：PCT/US2012/035299

    申请日：2012-04-26

    Applicant: NETAPP, INC. ,  MUDHIGANTI, Devender ,  KEREMANE, Hrishikesh ,  SOMAVARAPU, Nagender ,  GEORGE, Tijin

    Inventor： MUDHIGANTI, Devender ,  KEREMANE, Hrishikesh ,  SOMAVARAPU, Nagender ,  GEORGE, Tijin

    IPC: G06F15/16 ,  G06F9/06

    CPC classification number: G06F3/0613 ,  G06F3/0608 ,  G06F3/0647 ,  G06F3/067 ,  G06F17/30067 ,  G06F17/30557

    Abstract: System and method for migrating data from a source storage site to a destination storage site. The data may be comprised within storage objects (e.g., flexible volumes). A base storage object may comprise a parent storage object and a storage object clone may comprise a storage object that is derived from the base storage object. As such, a hierarchical relationship exists between the base storage object and the storage object clone. The storage object clone may comprise a writable point-in-time image of the parent storage object. If a migration of the base storage object and the storage object clone is performed, then the hierarchical relationship between the base storage object and the storage object clone is retained after the storage objects are migrated from the source storage site to the destination storage site. As such, the system and method for migrating data may enable storage space and network bandwidth savings.

    Abstract translation: 将数据从源存储站点迁移到目标存储站点的系统和方法。 数据可以包含在存储对象（例如，灵活的卷）内。 基本存储对象可以包括父存储对象，并且存储对象克隆可以包括从基本存储对象导出的存储对象。 因此，基本存储对象和存储对象克隆之间存在层次关系。 存储对象克隆可以包括父存储对象的可写入时间点图像。 如果执行基本存储对象和存储对象克隆的迁移，则在将存储对象从源存储站点迁移到目标存储站点之后，将保留基本存储对象和存储对象克隆之间的分层关系。 因此，用于迁移数据的系统和方法可以实现存储空间和网络带宽的节省。

    DYNAMIC MIRRORING
    10.
    发明公开
    DYNAMIC MIRRORING 审中-公开
    动态镜像

    公开(公告)号：EP3304311A1

    公开(公告)日：2018-04-11

    申请号：EP16721031.9

    申请日：2016-04-25

    Applicant: NetApp, Inc.

    Inventor： KEREMANE, Hrishikesh ,  AYYAPPAN, Iswarya ,  JOSEPH, Allen, Rintoul Keeranchira ,  RAMASUBRAMANIAM, Vaiapuri ,  CHAUHAN, Jitendra, Pratap Singh

    IPC: G06F11/20

    CPC classification number: G06F11/2069 ,  G06F11/00 ,  G06F11/2058 ,  G06F11/2082

    Abstract: One or more techniques and/or systems are provided for dynamic mirroring. A first storage node and the second storage node within a first storage cluster may locally mirror data between one another based upon a local failover partnership. The first storage node and a third storage node within a second storage cluster may remotely mirror data between one another based upon a primary disaster recovery partnership. If the third storage node fails, then the first storage node may remotely mirror data to a fourth storage node within the second storage cluster based upon an auxiliary disaster recovery partnership. In this way, data loss protection for the first storage node may be improved, such that the fourth storage node provide clients with access to mirrored data from the first storage node in the event the second storage node and/or the third storage node are unavailable when the first storage node fails.

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