公开(公告)号：EP3304311B1

公开(公告)日：2019-08-07

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

公开(公告)号：EP3365786A1

公开(公告)日：2018-08-29

申请号：EP16791496.9

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.

公开(公告)号：EP3218793A1

公开(公告)日：2017-09-20

申请号：EP15801581.8

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: 在由第一节点从第二节点接管存储冗余之后，在从第一节点到第二节点的存储冗余回馈期间，通过从第二节点接收节点标识指示符来部分初始化第二节点。 节点标识指示符被包括在由第二节点在存储冗余交还的交付等待阶段期间发送的节点通告消息中。 节点识别指示符包括集群内节点连接性标识符，该集群节点连接性标识符被第一节点用来确定第二节点是否是集群内接管伙伴。 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。

公开(公告)号：EP2883147A1

公开(公告)日：2015-06-17

申请号：EP13827907.0

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.

公开(公告)号：EP2702499A2

公开(公告)日：2014-03-05

申请号：EP12775929.8

申请日：2012-04-26

Applicant: NetApp, Inc.

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.