Emc IP Holding Company LLC

Carole Ann Gelotti

Dmitry Nikolayevich Tylik

David Meiri

Nagasimha G Haravu

Aharon Blitzer

Alan Lee Taylor

Matthew H Long

Girish Sheelvant

Yuval Harduf

Marina Shem Tov

Dave J Lindner

Robert A Viveney

Alexander Izikson

In one aspect, an example methodology implementing the disclosed techniques includes creating, by a first site of a volume that supports active-active bidirectional replication, a local copy of the volume, the local copy of the volume configured to be active. The method also includes enabling, by the first site of the volume, bidirectional write input/output (I/O) mirroring with a second site of the volume. The method further includes, by the second site of the volume, creating a remote copy of the volume, the remote copy of the volume configured to be passive, and enabling bidirectional write I/O mirroring with the first site of the volume.

Active-passive configuration for synchronous remote replication in an active-active metro cluster

A method, computer program product, and computing system for receiving a request to perform an action on an object within a storage system and may determine whether the action is valid for performing on the object based upon, at least in part, one or more conditions associated with performing the action and one or more parameters of a validation annotation associated with the one or more conditions. In response to determining that the action is valid, the action may be performed on the object. In response to determining that the action is invalid, one or more errors may be generated based upon, at least in part, the one or more parameters of the validation annotation associated with the one or more conditions.

System and method for validating actions to be performed on a storage system objects

In a protective quorum service, during an initial period of normal operation in which a clustered pair of data storage nodes provide host I/O access to a data storage object and replicate write-type requests to each other, the nodes are first registered to the quorum service. Subsequently, based on the registration and in response to a first auto promote request from a first-requesting node, a success response is returned and the service enters an auto promoted condition, the success response indicating that the first-requesting node is to continue providing the host I/O access to the data storage object without write replication. In response to receiving a subsequent auto promote request from the other node when in the auto promoted condition, a failure response is returned indicating that the other node is to cease providing host I/O access to the data storage object.

Data storage cluster with quorum service protection

Data storage management may include configuring a stretched volume in a metro cluster configuration using a first volume and a second volume both configured as a same logical volume, L; receiving I/O operations at the metro cluster configuration directed to L, wherein the I/O operations include a write operations that are received at a first system of the metro cluster configuration and that write first data to the first volume; viewing values of a metric regarding data replication performed for the first volume to replicate data between systems of the metro cluster configuration for writes directed to the first volume; responsive to said viewing, determining whether the first metric values denote a problem has occurred in the metro cluster configuration at a first point in time; and responsive to determining that the problem has occurred at the first point in time, performing one or more corrective actions.

Data storage system management techniques and metrics

Two data storage systems, DSand DS, may be initially configured with identifiers for target ports and target port groups. Subsequently, the two system may be combined into a cluster including a stretched volume configured from the volumes Vand V, respectively, on DSand DS, where Vand Vare exposed to the host as the same logical volume, L, over multiple paths from DSand DSto the host. Vmay have a normal attribute indicating target ports and port groups of DShave associated identifiers as specified in an initial configuration when reporting information regarding Lto the host. Vmay have an extended attribute indicating that target ports and port groups of DShave associated extended identifiers determined using a first extended value and using identifiers from an initial configuration when reporting information regarding Lto the host.

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Hollis, NH, United States of America

Carole Ann Gelotti