Exagrid Systems, Inc.

Ashok T Ramu

Adrian T VanderSpek

David G Therrien

Mark Bennett Hecker

Thomas G Hansen

Herman Robert Kenna

James E Pownell

Jamey C Poirier

Cory Sawyer

Lucas H Makosky

Maxwell Joel Berenson

Adrian Vanderspek

A system, a method and a computer program product for storing data, which include receiving a data stream having a plurality of transactions that include at least one portion of data, determining whether at least one portion of data within at least one transaction is substantially similar to at least another portion of data within at least one transaction, clustering together at least one portion of data and at least another portion of data within at least one transaction, selecting one of at least one portion of data and at least another portion of data as a representative of at least one portion of data and at least another portion of data in the received data stream, and storing each representative of a portion of data from each transaction in the plurality of transactions, wherein a plurality of representatives is configured to form a chain representing the received data stream.

Systems and methods for version chain clustering

A system, a method, and a computer program product for delta version clustering and re-anchoring are provided. A first anchor having a plurality of delta-compressed versions of data dependent on the first anchor is generated. The first anchor and the plurality of delta-compressed versions form a cluster. A second anchor is generated. The first anchor is replaced with the second anchor. The replacing includes re-computing at least one delta-compressed version in the plurality of delta-compressed versions to be dependent on the second anchor. The second anchor replaces the first anchor as an anchor of the cluster.

Delta version clustering and re-anchoring

Embodiments of this invention provide primary magnetic disk data storage capacity to clients while at the same time making sure that client data is replicated locally and at an offsite location to protect from all forms of data loss.

Method and apparatus for integrating primary data storage with local and remote data protection

The present invention relates to a computer primary data storage system that integrates the functionality of file backup and remote replication to provide an integrated storage system that protects its data from loss related to system or network failures or the physical loss of a data center.

Method and apparatus for managing data integrity of backup and disaster recovery data

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Waltham, MA, United States of America

Ashok T Ramu