Emc Corporation

Emc IP Holding Company LLC

Emc International Company

Dell Products Inc.

Aharon Blitzer

Aviram Katz

Amit Lieberman

Roy Dahan

Senya Touretski

Amihai Hadar

Maayan Maltz

Yuval Harduf

David Barta

David Meiri

Xiangping Chen

Dmitry Nikolayevich Tylik

Nagasimha G Haravu

Michael E Specht

Yaron Dar

Ido Halevi

Nir Sela

Carole Ann Gelotti

Tamir Segal

Radai Rosenblatt

Alan Lee Taylor

Dan Aharoni

Girish Sheelvant

Ananthan K Pillai

Marina Shem Tov

Christopher J Hackett

Peter A Bouchard

David C Dysert

Puneet B Lal

Roi Tagar

Meytal Ashkenazy

Hamid R Farshi

Alexander Izikson

Cynthia L Toryu

Oz Garinkol

Roy Michael

Techniques are provided for processing of input/output (I/O) operations within a fault domain of a data storage system. One method comprises receiving I/O write requests from a client application, executing in a first fault domain, to write data; writing, by the storage control system, a primary copy of the data of the I/O write requests to at least one storage volume in the first fault domain using a designated assignment of the client application to the first fault domain; and writing a secondary copy of the data of the I/O write requests to at least one storage volume in an additional fault domain, wherein data responsive to I/O read requests from the client application executing in the first fault domain is obtained from the at least one storage volume in the first fault domain.

Processing of input/output operations within a fault domain of a data storage system

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

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

An apparatus is configured to initiate a first replication session to replicate data of a first consistency group in a first storage system to a second consistency group in a second storage system, to create an additional consistency group linked to the second consistency group in the second storage system, and to initiate a second replication session to replicate data of the additional consistency group to another consistency group in a third storage system. The additional consistency group linked to the second consistency group in some embodiments is periodically updated against the second consistency group. For example, in one or more embodiments the second consistency group is updated based at least in part on an active snapshot set of the first replication session, and the additional consistency group is updated based at least in part on the second consistency group.

Storage system configured to support cascade replication

An apparatus is configured to initiate a first replication session to replicate data of a first consistency group in a first storage system to a second consistency group in a second storage system, to create an additional consistency group linked to the first consistency group in the first storage system, and to initiate a second replication session to replicate data of the additional consistency group to another consistency group in a third storage system. The additional consistency group linked to the first consistency group in some embodiments is periodically updated against the first consistency group. For example, in one or more embodiments the second consistency group is updated based at least in part on an active snapshot set of the first replication session, and the additional consistency group is updated based at least in part on the first consistency group.

Storage system configured to support one-to-many replication

Example embodiments of the present invention relate to a method, a system, and a computer program product for data protection. The method includes creating a snapshot of a volume and maintaining the snapshot as a logical point in time copy of the volume for data protection of the volume.

Efficient local data protection of application data in storage environments

Example embodiments of the present invention relate to a method, a system, and a computer program product for copy data management. The method includes creating a snapshot of a volume and exposing the snapshot of the volume as a writable copy of the volume.

Efficient repurposing of application data in storage environments

Currently, administrators configure replication manually according to a data protection policy. Typically, such data protection policies are provided via a script or a similar input to provision storage devices. However, such manual configuration is subject to administrator error. For example, an administrator may not provision storage devices accurately according to a desired data protection policy. Further, this process is subject not only to human mistake, but also the administrative overhead required to manually provision the storage devices. Example embodiments of the present invention eliminate administration and reliability issues arising out of manual replication service configuration, thereby minimizing administrative costs and improving the user experience of handling data protection. Example embodiments of the present invention provide a method, an apparatus and a computer-program product for creating a policy-based replication service. The method includes receiving a policy and creating a replication service according to the policy.

Method and apparatus for policy-based replication

Described embodiments provide systems and processes for performing data migration in a storage system. One or more consistency groups are migrated from at least one source device to at least one target device in the storage system. The consistency groups are replicated from the source device to the target device by an asynchronous data replication operation from the source device to the target device and one or more synchronous data replication operations from the source device to the target device if data stored on the source device is changed. The consistency groups are operated on the source device and the target device in an active-active mode, wherein the source device and target device are active and accessible by host devices. Replicated consistency groups are determined to include in a cutover operation that is performed by deactivating the at least one source device associated with the included consistency groups.

Parallel migration of multiple consistency groups in a storage system

In one aspect, a method, includes receiving and storing objects in a repository, translating objects in an object repository format to a graphical user interface (GUI) format, rendering the GUI format to a user, receiving a rule from the user using the GUI format, translating the rule in the GUI format to a rule repository format, storing rule in the rule repository format in a rule repository and compiling the rule in the rule repository format into a format that is acceptable for processing by the event based analysis engine.

Simplifying rules generation for an event-based analysis engine

In one aspect, a method includes rendering to a user an object and objects related to the object, receiving from a user a selection by a user of a one of the related objects to use in a rule for an event-based analysis engine and merging the object and the selected object to perform the rule.

Simplifying rules generation for an event-based analysis engine by allowing a user to combine related objects in a rule

Several aspects for providing historical information to an event based image include a method, an apparatus and an article. One or more of the aspects includes receiving a trigger associated with a rule, determining if the rule requires that historical information be provided to an event-based analysis engine, filtering out events not needed by the rule if the rule requires historical information and providing the event-based analysis engine with historical information based on the filtering.

Providing historical data to an event-based analysis engine

In one aspect, a method includes receiving an original rule configured to be used by an event based analysis engine. The original rule requires data to be collected over a period of time. The method also includes determining if the period of time is greater than a time period threshold; determining if the original rule includes an aggregate function; generating an aggregation rule that aggregates the data to be collected by the original rule if the original rule includes an aggregate function and if the period of time is greater than the time period threshold and aggregating data according to the aggregation rule.

Using data aggregation to manage a memory for an event-based analysis engine

In one aspect, a method includes determining if a rule in a memory of an event-based analysis engine has been used by the event-based analysis engine within a predetermined period of time and moving the rule to a storage device if the rule in the memory of the event-based analysis engine has not been used by the event-based analysis engine within the predetermined period of time.

Managing a memory of an event-based analysis engine

In one aspect, a method includes obtaining data on components of a virtualization server comprising acquiring a mapping of virtual disks in a virtual store to storage disks, obtaining data on components of a storage array comprising acquiring a mapping of logical units in the storage array to the storage disks, the logical units replicating data from a corresponding storage disk, correlating each virtual disk to a logical unit based on the mapping of the virtual disks to the storage disks and the mapping of the logical units to the storage disks, retrieving replication data of the logical units from the storage arrays and, for a selected virtual store, checking that the selected virtual store has a replica for all the required storage disks mapped to the virtual disks of the selected virtual store.

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Shoham, Israel

Aharon Blitzer