1
Assaf Natanzon, Lev Ayzenberg, Yossi Mossel, Ido Singer, Oded Kedem: Dynamically switching between synchronous and asynchronous replication. EMC Corporation, Krishnendu Gupta, Joseph D Angelo, December 25, 2012: US08341115 (98 worldwide citation)

In a system comprising a production environment and a replication environment, a method and program product for dynamically switching from an asynchronous replication policy to a synchronous replication policy. In a system comprising a production environment and a replication environment, a method f ...


2
Shlomo Ahal, Assaf Natanzon: Methods and apparatus for dynamic journal expansion. EMC, Daly Crowley Mofford & Durkee, November 23, 2010: US07840536 (80 worldwide citation)

Method and apparatus to dynamically add storage for a journal in a continuous data protection system. In an exemplary embodiment, a method includes storing a plurality of journal data streams for a journal in a continuous data protection system in first storage, where streams in the journal data str ...


3
Assaf Natanzon, Arieh Don, David Meiri: Storage array snapshots for logged access replication in a continuous data protection system. EMC Corporation, Daly Crowley Mofford & Durkee, December 18, 2012: US08335771 (76 worldwide citation)

Methods and apparatus for a continuous data protection system having a protection agent and at least one data protection appliance that enables, in an image access mode, a rolling back of volumes in a highly available storage array on the target side so that the volumes contain data for a selected p ...


4
Assaf Natanzon, Yuval Aharoni: Virtualized consistency group using an enhanced splitter. EMC International Company, Daly Crowley Mofford & Durkee, April 30, 2013: US08433869 (73 worldwide citation)

In one aspect, a method includes forming a virtualized grid consistency group to replicate a logical unit, running a first grid copy on a first data protection appliance (DPA) replicating a first portion of the logical unit, running a second grid copy on a second DPA replicating a second portion of ...


5
Assaf Natanzon, Evgeny Drukh, Shlomo Ahal: Method and apparatus to recover data in a continuous data protection environment using a journal. EMC, Daly Crowley Mofford & Durkee, December 28, 2010: US07860836 (72 worldwide citation)

In one aspect, a method to recover data includes annotating metadata entries in a journal to indicate changes by an application to an object stored in a continuous data protection environment. Each entry of the metadata corresponds to one of a unique group of DO stream data blocks or a unique group ...


6
Talmon Marco, Assaf Natanzon, Hayim Shaul, Ilan Rachmani, Nathaniel Leibowitz, Yossi Richter: Method and system for accelerating receipt of data in a client-to-client network. PeerApp, Fish & Neave IP Group of Ropes & Gray, Jeffrey H Ingerman, April 10, 2007: US07203741 (71 worldwide citation)

A method and system for accelerating receipt of data in a client-to-client network. The method includes the steps of intercepting queries and responses, storing the intercepted queries and responses in an acceleration server and transmitting the intercepted responses to clients submitting intercepte ...


7
Shlomo Ahal, Assaf Natanzon, Tzach Sechner, Oded Kedem, Evgeny Drukh: Methods and apparatus for optimal journaling for continuous data replication. EMC Israel Development Center, Daly Crowley Mofford & Durkee, April 7, 2009: US07516287 (71 worldwide citation)

Methods and systems for continuous data replication, including receiving a write transaction from a production site, the write transaction including raw data (RWNEW), a size indicator (SZ1) for the size of the raw data, and a start address (ADD1) for writing the raw data, copying the raw data (RWNEW ...


8
Assaf Natanzon: Leveraging array snapshots for immediate continuous data protection. EMC Corporation, Krishnendu Gupta, Gerald P Kazanjian, August 27, 2013: US08521694 (71 worldwide citation)

One challenge to continuous data protection (CDP) is the resources required for storage. Typically, when setting up replication, a production volume and replica are set up and initialized to copy data from the production volume to the replica. However, instead of taking a clone of the volume, there ...


9
Assaf Natanzon, Yuval Aharoni: Synchronizing volumes for replication. EMC, Daly Crowley Mofford & Durkee, February 1, 2011: US07882286 (69 worldwide citation)

In one aspect, a method to perform synchronization in a network-based system includes notifying a source side appliance that I/O data is going to be written to a source side storage and a target side appliance, waiting for an acknowledgement that the notification was received and writing I/O data to ...


10
Assaf Natanzon, Ivan Andreyev: Multi source wire deduplication. EMC Corporation, Krishnendu Gupta, Joseph D Angelo, July 23, 2013: US08495304 (67 worldwide citation)

A method, system, and program product for data deduplication in a replication environment, the replication environment having a production site, a splitter, and a replication site, wherein the replication site has a journal, comprising determining a digest for each chunk of data of a set of data chu ...