Emc IP Holding Company LLC

Matthew Eaton

Matthew P Jean

Michael J McCarthy

Dmitry Nikolayevich Tylik

Daniel E Cummins

Nagasimha G Haravu

Matthew H Long

Mark Adam Arakelian

Steven Teng

Kenneth Hu

Michael J Burns

Jeff Phillips

Nigel Stuart

Techniques are presented for clustering data storage including (a) announcing, using zeroconf, to a local network, a service provided by a DSA and an unreserved state of the DSA, the service being of a clusterable data storage type, (b) receiving a cluster command from a configuration management device connected to the local network, the cluster command directing the DSA to join a storage cluster to present combined storage of the DSA and at least one other DSA, and (c) in response to receiving the cluster command: (1) announcing to the local network via L2 multicasting that the DSA has entered a reserved state using zeroconf, (2) afterwards, performing configuration operations including updating system parameters, resulting in the DSA becoming part of the storage cluster, and (3) while in the reserved state, receiving another cluster command directing the DSA to join another storage cluster, and, in response, refusing the other cluster command.

Autoinitialization of clustered storage

A primary copy and one or more shadow copies of a logical volume are created and discovered by a host rescan performed when the logical volume is initially created. Data storage resources are allocated to the primary copy, but not to the shadow copy. The initial path state of the logical volume describes the path to the primary copy as active, and the path to the shadow copy as unavailable for accessing the logical volume. Movement of the logical volume to the storage appliance providing the shadow copy can be performed without an additional host rescan, by making the shadow copy the new primary copy, making the primary copy a new shadow copy, and updating the path state of the logical volume to indicate i) that the path to the new primary copy is active, and ii) that the path to the new shadow copy is unavailable.

Supporting non-disruptive movement of a logical volume of non-volatile data storage between storage appliances

A method, computer program product, and computing system for monitoring the availability of multiple redundant data sources within a high-availability data environment. The inaccessibility of at least one of the multiple redundant data sources is detected, thus defining at least one inaccessible data source. Which software applications are impacted by the at least one inaccessible data source is determined, thus defining at least one impacted software application. A notification is provided to one or more parties associated with the at least one impacted software application concerning the inaccessibility of the at least one inaccessible data source.

Message generation system and method

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Mansfield, MA, United States of America

Matthew Eaton