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EMC International Company Assigned Three Patents

Consistency across snapshot shipping and continuous replication, replicating volume using snapshots, dynamic granularity in replication

Consistency across snapshot shipping and continuous replication
EMC International Company, Hamilton, Bermuda, has been assigned a patent (9,087,112) developed by Natanzon, Assaf, Tel Aviv, Israel, Cohen, Saar, Moshav Mishmeret, Israel, and Shemer, Jehuda, Kfar Saba, Israel, for a “consistency across snapshot shipping and continuous replication.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: “In one aspect, a method includes performing replication of a first volume using a snapshot shipping mode, performing replication of a second volume using a continuous replication mode and generating a consistent point in time for the first and second volumes to enable retrieval of replicated data from the first and second volumes at the consistent point in time.”

The patent application was filed on June 24, 2013 (13/924,982).

Replicating volume using snapshots
EMC International Company, Hamilton, Bermuda, has been assigned a patent (9,087,008) developed by Natanzon, Assaf, Tel Aviv, Israel, for a “replicating a volume using snapshots.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “In one aspect, a method to synchronize a replica volume with a production volume includes providing a first snapshot of the production volume and a first dirty list that includes differences between the first snapshot and the replica volume, sending only a portion of the differences between the first snapshot and the replica volume to the replica site associated with a section of the production volume, generating a second snapshot of the production volume, adding differences between the first snapshot and the second snapshot to a second dirty list, erasing the first snapshot of the production volume and renaming the second snapshot to the first snapshot.

The patent application was filed on June 24, 2013 (13/924,869).

Dynamic granularity in data replication
EMC International Company, Hamilton, Bermuda, has been assigned a patent (9,069,709) developed by Natanzon, Assaf, Tel Aviv, Israel, and Shemer, Jehuda, Kfar Saba, Israel, for a “dynamic granularity in data replication.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”In one aspect, a method includes sending a snapshot of a primary volume to a replica site, determining if a bandwidth is available to send changes in the primary volume to the replica site to allow any point in time recovery of data in the primary volume and sending the changes from the primary volume if the bandwidth is available.“

The patent application was filed on June 24, 2013 (13/925,134).

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