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    MIRRORING LOG DATA
    21.
    发明申请
    MIRRORING LOG DATA 审中-公开
    镜像日志数据

    公开(公告)号：US20150312337A1

    公开(公告)日：2015-10-29

    申请号：US14261603

    申请日：2014-04-25

    Applicant: NetApp Inc.

    Inventor： Hrishikesh Keremane ,  Vaiapuri Ramasubramaniam ,  Rishabh Mittal ,  Harihara Kadayam ,  Tabriz Holtz ,  Afshin Salek Ardakani

    IPC: H04L29/08 ,  G06F3/06

    CPC classification number: H04L67/1095 ,  G06F3/0619 ,  G06F3/065 ,  G06F3/067 ,  G06F11/2092 ,  G06F11/2097 ,  G06F12/0804 ,  H04L69/40

    Abstract: One or more techniques and/or systems are provided for mirroring a caching log data structure from a primary storage controller to a secondary storage controller over multiple interconnect paths. The secondary storage controller may be configured as a backup or failover storage controller for the primary storage controller in the event the primary storage controller fails. Data and/or metadata describing the data may be mirrored from the primary storage controller to the secondary storage controller over one or more interconnect paths. The caching log data structure may be parsed into a plurality of streams. The streams may be assigned to interconnect paths between the primary storage controller and the secondary storage controller. A data ordering rule is enforced during mirroring of storage information of the streams across the interconnect paths (e.g., the secondary storage controller is to receive data in the order it was sent by respective streams).

    Abstract translation: 提供了一个或多个技术和/或系统，用于通过多个互连路径将缓存日志数据结构从主存储控制器镜像到辅助存储控制器。 在主存储控制器发生故障的情况下，辅助存储控制器可以被配置为主存储控制器的备份或故障转移存储控制器。 可以通过一个或多个互连路径将描述数据的数据和/或元数据从主存储控制器镜像到辅助存储控制器。 缓存日志数据结构可以被解析成多个流。 可以将流分配给主存储控制器和辅助存储控制器之间的互连路径。 在跨互连路径的流的存储信息的镜像期间执行数据排序规则（例如，辅助存储控制器将按照由相应的流发送的顺序来接收数据）。

    Dynamic mirroring
    25.
    发明授权
    Dynamic mirroring 有权

    公开(公告)号：US09760458B2

    公开(公告)日：2017-09-12

    申请号：US14800108

    申请日：2015-07-15

    Applicant: NetApp Inc.

    Inventor： Hrishikesh Keremane ,  Iswarya Ayyappan ,  Allen Rintoul Keeranchira Joseph ,  Vaiapuri Ramasubramaniam ,  Jitendra Pratap Singh Chauhan

    IPC: G06F11/00 ,  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.

    Non-disruptive controller replacement in a cross-cluster redundancy configuration
    26.
    发明授权
    Non-disruptive controller replacement in a cross-cluster redundancy configuration 有权
    跨群集冗余配置中的非中断控制器替换

    公开(公告)号：US09507678B2

    公开(公告)日：2016-11-29

    申请号：US14541119

    申请日：2014-11-13

    Applicant: NetApp, Inc.

    Inventor： Amit V. Panara ,  Chaitanya V. Patel ,  Hrishikesh Keremane ,  Pankti Vinay Majmudar ,  Santhosh Unnikrishnan ,  Sravan Kumar Elpula ,  Susan M. Coatney

    IPC: G06F11/00 ,  G06F11/20 ,  G06F3/06

    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，第一节点使用该标识符来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。

    SYSTEMS AND METHODS FOR RESYNCHRONIZING MIRRORING PARTNERS IN A STORAGE SYSTEM
    27.
    发明申请
    SYSTEMS AND METHODS FOR RESYNCHRONIZING MIRRORING PARTNERS IN A STORAGE SYSTEM 审中-公开
    在存储系统中重新构建镜像伙伴的系统和方法

    公开(公告)号：US20160085650A1

    公开(公告)日：2016-03-24

    申请号：US14950508

    申请日：2015-11-24

    Applicant: NetApp Inc.

    Inventor： Harihara Kadayam ,  Vaiapuri Ramasubramaniam ,  Rishabh Mittal ,  Hrishikesh Keremane

    IPC: G06F11/20 ,  G06F3/06

    CPC classification number: G06F11/2082 ,  G06F11/2058 ,  G06F11/2074 ,  G06F12/0868

    Abstract: Systems and methods which provide for managing multiple minor resources in a storage distribution network are provided. In some embodiments, a system provides for both high availability and disaster recovery functionality at different mirroring locations. Other embodiments may provide for multiple high availability and/or multiple disaster recovery mirror resources. These mirror resources are operated in a heterogeneous manner in the sense that each have its own transport, protocol, and the like, but are configured function cooperatively or as a single minor with respect to minoring a primary node. Embodiments may provide for the minoring and resynchronization of mirrored resources in the event of a communication loss with a particular resource without ceasing the minoring operations to other resources.

    Abstract translation: 提供了提供用于管理存储分配网络中的多个次要资源的系统和方法。 在一些实施例中，系统在不同的镜像位置提供高可用性和灾难恢复功能。 其他实施例可以提供多个高可用性和/或多个灾难恢复镜像资源。 这些镜像资源在各自具有其自己的传输，协议等等的意义上操作，但是被配置为协调地或者作为一个次要的关于裁剪主节点的意义。 实施例可以提供在与特定资源的通信丢失的情况下的镜像资源的精简和重新同步，而不停止对其他资源的裁剪操作。

    INTERCONNECT PATH FAILOVER
    29.
    发明申请
    INTERCONNECT PATH FAILOVER 有权

    公开(公告)号：US20150309892A1

    公开(公告)日：2015-10-29

    申请号：US14261556

    申请日：2014-04-25

    Applicant: NetApp Inc.

    Inventor： Vaiapuri Ramasubramaniam ,  Rishabh Mittal ,  Amarnath Jolad ,  Hrishikesh Keremane ,  Harihara Kadayam

    IPC: G06F11/20

    CPC classification number: G06F11/2069 ,  G06F11/2005 ,  G06F11/201 ,  G06F11/2092 ,  G06F11/221 ,  G06F11/2221 ,  G06F11/3027 ,  G06F11/3051 ,  G06F12/0238 ,  G06F2212/222

    Abstract: One or more techniques and/or systems are provided for interconnect failover between a primary storage controller and a secondary storage controller. The secondary storage controller may be configured as a backup or failover storage controller for the primary storage controller in the event the primary storage controller fails. Data and/or metadata describing the data (e.g., data and/or metadata stored within a write cache) may be mirrored from the primary storage controller to the secondary storage controller over one or more interconnect paths. Responsive to identifying a failover trigger for a failed interconnect path, the secondary storage controller is instructed to fence (e.g., block) I/O operations from the failed interconnect path. Streams of data and/or metadata that were affected by the failure may be instructed to transmit such data and/or metadata over one or more non-failed interconnect paths to the secondary storage controller during failover of the failed interconnect path.

    Abstract translation: 提供一个或多个技术和/或系统用于主存储控制器和辅助存储控制器之间的互连故障切换。 在主存储控制器发生故障的情况下，辅助存储控制器可以被配置为主存储控制器的备份或故障转移存储控制器。 可以通过一个或多个互连路径将描述数据（例如，存储在写高速缓存内的数据和/或元数据）的数据和/或元数据从主存储控制器镜像到辅存储控制器。 响应于识别故障互连路径的故障转移触发器，指示辅助存储控制器围绕（例如，阻止）来自故障互连路径的I / O操作。 可以指示受故障影响的数据流和/或元数据流在故障互连路径的故障转移期间通过一个或多个非故障互连路径将此类数据和/或元数据传送到辅助存储控制器。

    Implementing automatic switchover
    30.
    发明授权
    Implementing automatic switchover 有权

    公开(公告)号：US11232004B2

    公开(公告)日：2022-01-25

    申请号：US16681979

    申请日：2019-11-13

    Applicant: NetApp Inc.

    Inventor： Hrishikesh Keremane ,  Vijay Singh

    IPC: G06F11/00 ,  G06F11/20 ,  G06F11/07

    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.

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