Netapp, Inc.

Santhosh Unnikrishnan

Hrishikesh Keremane

Chaitanya V Patel

Susan M Coatney

Amit Valjibhai Panara

Pankti Vinay Majmudar

Sravan Kumar Elpula

Harihara Kadayam

Vaiapuri Ramasubramaniam

Sameer Deshpande

Rishabh Mittal

Amit V Panara

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.

Non-disruptive controller replacement in a cross-cluster redundancy configuration

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.

Configuration of peered cluster storage environment organized as disaster recovery group

Growing community of inventors

Kerala, India

Santhosh Unnikrishnan