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。

公开(公告)号：US20180074925A1

公开(公告)日：2018-03-15

申请号：US15804028

申请日：2017-11-06

Applicant: NetApp Inc.

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

IPC: G06F11/20

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：US09811428B2

公开(公告)日：2017-11-07

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: G06F11/00 ,  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.

公开(公告)号：US09307011B2

公开(公告)日：2016-04-05

申请号：US13854815

申请日：2013-04-01

Applicant: NetApp, Inc.

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

IPC: G06F11/00 ,  H04L29/08 ,  G06F11/07

CPC classification number: H04L67/06 ,  G06F11/0793 ,  G06F11/2058 ,  G06F11/2064 ,  H04L67/1095 ,  H04L67/1097

Abstract: Systems and methods herein are operable to simultaneously mirror data to a plurality of mirror partner nodes. In embodiments, a mirror client may be unaware of the number of mirror partner nodes and/or the location of the plurality of mirror partner nodes, and issue a single mirror command requesting initiation of a mirror operation. An interconnect layer may receive the single mirror command and split the mirror command into a plurality of mirror instances, one for each mirror node partner, wherein the mirror instances may be simultaneously launched. After the plurality of mirror operations has begun, the interconnect layer may manage completion reports indicating the completion status of respective mirror operations, and send a single return to the mirror client indicating whether the mirror command succeeded.

Abstract translation: 这里的系统和方法可操作以将数据同时镜像到多个镜像伙伴节点。 在实施例中，镜像客户端可能不知道镜像伙伴节点的数量和/或多个镜像伙伴节点的位置，并且发出请求启动镜像操作的单个镜像命令。 互连层可以接收单个镜像命令，并将镜像命令拆分成多个镜像实例，每个镜像镜像实例一个，每个镜像节点伙伴可以同时启动镜像实例。 在多个镜像操作开始之后，互连层可以管理指示相应镜像操作的完成状态的完成报告，并且向镜像客户端发送指示镜像命令是否成功的单个返回。

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）。