公开(公告)号：US09928148B2

公开(公告)日：2018-03-27

申请号：US14526037

申请日：2014-10-28

Applicant: NetApp, Inc.

Inventor： Harihara Kadayam ,  Hrishikesh Keremane ,  Vaiapuri Ramasubramaniam ,  Rishabh Mittal ,  Chaitanya Patel ,  Santhosh Unnikrishnan ,  Sameer Deshpande

IPC: G06F15/177 ,  G06F11/20 ,  H04L12/24 ,  H04L29/08 ,  H04L12/751 ,  H04L12/703 ,  H04L12/931

CPC classification number: G06F11/2069 ,  G06F11/2094 ,  G06F11/2097 ,  H04L41/0663 ,  H04L41/0873 ,  H04L41/0893 ,  H04L45/02 ,  H04L45/28 ,  H04L49/357 ,  H04L67/1097

Abstract: A technique efficiently configures a peered cluster storage environment. The configuration technique illustratively includes three phases: a discovery phase, a node setup phase and a cluster setup phase. The discovery phase may be employed to initiate discovery of nodes of a disaster recovery (DR) group through transmission of multicast advertisement packets by the nodes over interconnects, including a Fiber Channel (FC) fabric, to each other node of the group. In the node setup phase, each node of a cluster assigns its relationships to the nodes discovered and present in the FC fabric; illustratively, the assigned relationships include high availability (HA) partner, DR primary partner and DR auxiliary partner. In the cluster setup phase, the discovered nodes of the FC fabric are organized as the peered cluster storage environment (DR group) configured to service data in a highly reliable and available manner.

公开(公告)号：US09811432B2

公开(公告)日：2017-11-07

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 ,  G06F12/08 ,  G06F12/0868

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

Abstract: Systems and methods which provide for managing multiple mirror 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 mirror with respect to mirroring a primary node. Embodiments may provide for the mirroring and resynchronization of mirrored resources in the event of a communication loss with a particular resource without ceasing the mirroring operations to other resources.

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.

公开(公告)号：US20170091057A1

公开(公告)日：2017-03-30

申请号：US14865542

申请日：2015-09-25

Applicant: NetApp Inc.

Inventor： Vaiapuri Ramasubramaniam ,  Balamurugan Ramajeyam ,  Aftab Ahman Ansari ,  Akshatha Gangadharaiah ,  Raman Madaan

IPC: G06F11/20 ,  G06F11/14

CPC classification number: G06F11/2082 ,  G06F11/2071 ,  G06F17/30 ,  G06F2201/84

Abstract: One or more techniques and/or computing devices are provided for implementing resynchronization operations. For example, a disaster recovery relationship may be established between a source storage volume, hosted by a source storage node, and a destination storage volume hosted by a destination storage node, such that data is replicated from the source storage volume to the destination storage volume for disaster recovery purposes. If the disaster recovery relationship breaks, then new compliance data, locked down into a write once read many state, may be created at the destination storage volume. A resynchronization operation may be performed to reestablish the disaster recovery relationship, while preserving the new compliance data so that a compliance policy is not violated. For example, cloned storage volumes, copying compliance data to source storage volumes before resynchronization, and/or moving compliance data to local volumes may be used to implement resynchronization operations while preserving compliance data.

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。

公开(公告)号：US20160085647A1

公开(公告)日：2016-03-24

申请号：US14559343

申请日：2014-12-03

Applicant: NetApp, Inc.

Inventor： Vaiapuri Ramasubramaniam ,  Harihara Kadayam ,  Parag Sarfare ,  Yong Eun Cho ,  Chaitanya Patel ,  Hrishikesh Keremane ,  Prachi Deshmukh

IPC: G06F11/20

CPC classification number: G06F11/2033 ,  G06F11/2028 ,  G06F11/2041 ,  G06F11/2046 ,  G06F2201/805

Abstract: A system and method for handling multi-node failures in a disaster recovery cluster is provided. In the event of an error condition, a switchover operation occurs from the failed nodes to one or more surviving nodes. Data stored in non-volatile random access memory is recovered by the surviving nodes to bring storage objects, e.g., disks, aggregates and/or volumes into a consistent state.

Abstract translation: 提供了一种用于处理灾难恢复集群中的多节点故障的系统和方法。 在发生错误的情况下，从故障节点到一个或多个幸存节点发生切换操作。 存储在非易失性随机存取存储器中的数据由幸存的节点恢复，以将存储对象（例如，磁盘，聚合和/或卷）带入一致的状态。

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。