Symantec Corporation

Frederick Bosco Anthonisamy

Suhas Ashok Dantkale

Amarinder Singh Randhawa

A method and system for load balancing. The method includes determining that connectivity between a first host and a primary array controller of a storage system has failed. The first host is configured to send input/output messages (I/Os) to a storage system through a storage network fabric. An available host is discovered at a multi-pathing driver of the first host. The available host is capable of delivering I/Os to the primary array controller. An I/O is redirected from said first host to the available host over a secondary communication network for delivery to the storage system.

Method and system for cluster wide adaptive I/O scheduling by a multipathing driver

A reconfiguration is distributed among multiple nodes of a cluster. Upon detecting an initiation of a reconfiguration of the cluster, reconfiguration functionality is delegated from the master node to one or more slave nodes in the cluster. Thus, multiple nodes perform reconfiguration functionality in parallel, such that one or more slave nodes perform delegated reconfiguration tasks that would conventionally be performed by the master node. The cluster reconfiguration can be in the form of one or more nodes joining or leaving the cluster. Data to facilitate the cluster reconfiguration can be transmitted from the master node to a slave node to which reconfiguration functionality is being delegated. Such data can include, for example, identifiers of nodes joining or leaving the cluster and/or information concerning the architecture and shared storage media of the cluster.

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Sunnyvale, CA, United States of America

Frederick Bosco Anthonisamy