Patents by Inventor David G. Therrien

David G. Therrien has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210224379
    Abstract: A method, a system, and a computer program product for protection and recovery of backup storage systems from ransomware attacks. A request to modify data stored in a storage system is received. The storage system includes at least one component configured to store the deduplicated data. An acknowledgement of the received request is generated. The acknowledgement indicates that the data stored in the at least one component and identified in the received request was modified. Modification of the data stored in the at least one component and identified in the received request for a predetermined period of time is prevented.
    Type: Application
    Filed: January 15, 2021
    Publication date: July 22, 2021
    Inventors: Alex Pientka, Michael Carleton, Adrian T. VanderSpek, Stephen Smith, Luke Makosky, Peter Watkins, Nathaniel W. Turner, Sandra C. Scott, Yee-ching Chao, Thomas J. Gillispie, William Andrews, David G. Therrien, Jamey C. Poirier, Mark B. Hecker, Andrew H. French
  • Patent number: 10452617
    Abstract: A method, a system, and a computer-implemented method for performing multi-level deduplication of data are disclosed. A zone stamp is generated for each zone in a plurality of zones contained in at least one data stream. The zone stamp is compared to another zone stamp. The zone stamp and another zone stamp represent zones in the plurality of zones. The comparison is performed for zones at corresponding zone levels based on a determination that a zone stamp of a zone of a preceding zone level is not similar to another zone stamp of another preceding zone level. The zone at the preceding zone level includes at least one zone of a next zone level having a size smaller than or equal to a size of the zone of the preceding zone level. The zone and another zone are deduplicated based on a determination that the zone stamp is similar to another zone stamp.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: October 22, 2019
    Assignee: Exagrid Systems, Inc.
    Inventors: David G. Therrien, Yee-ching Chao, Thomas G. Hansen, Daniel P. Martinelli, Lucas H. Makosky, Mark B. Hecker, Stephen A. Smith, Adrian VanderSpek
  • Publication number: 20190278750
    Abstract: A method, a system, and a computer program product for performing a backup of data are disclosed. A grid server in a plurality of grid servers is selected for deduplicating a segment of data in a plurality of segments of data contained within a data stream. The segment of data is forwarded to the selected grid server for deduplication. A zone contained within the forwarded segment of data is deduplicated using the selected server. The deduplication is performed based on a listing of a plurality of zone stamps. Each zone stamp in the plurality of zone stamps represents a zone in a plurality of zones deduplicated by at least one server in the plurality of grid servers.
    Type: Application
    Filed: May 13, 2019
    Publication date: September 12, 2019
    Applicant: Exagrid Systems, Inc.
    Inventors: David G. Therrien, Stephen M. Stickles, Thomas J. Gillispie, William Andrews
  • Publication number: 20190266131
    Abstract: A system, a method, and a computer program product for performing deduplication of data using a scalable deduplication grid are disclosed. A listing of a plurality of zone stamps is generated, where each zone stamp represents a zone in the plurality of zones in a data stream. The listing contains a logical arrangement of the plurality of zone stamps obtained from each storage location and being accessible by a plurality of servers. A first zone stamp in the listing is compared to a second zone stamp in the listing. The first and second zones are delta-compressed based on a determination that the first zone stamp is substantially similar to the second zone stamp. A server is selected to perform the comparison and delta-compression.
    Type: Application
    Filed: May 14, 2019
    Publication date: August 29, 2019
    Inventors: Thomas G. Hansen, Daniel P. Martinelli, Lucas H. Makosky, Mark B. Hecker, Stephen A. Smith, Adrian T. VanderSpek, David G. Therrien
  • Patent number: 10387374
    Abstract: A system, a method, and a computer program product for performing deduplication of data using a scalable deduplication grid are disclosed. A listing of a plurality of zone stamps is generated, where each zone stamp represents a zone in the plurality of zones in a data stream. The listing contains a logical arrangement of the plurality of zone stamps obtained from each storage location and being accessible by a plurality of servers. A first zone stamp in the listing is compared to a second zone stamp in the listing. The first and second zones are delta-compressed based on a determination that the first zone stamp is substantially similar to the second zone stamp. A server is selected to perform the comparison and delta-compression.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: August 20, 2019
    Assignee: Exagrid Systems, Inc.
    Inventors: Thomas G. Hansen, Daniel P. Martinelli, Lucas H. Makosky, Mark B. Hecker, Stephen A. Smith, Adrian T. VanderSpek, David G. Therrien
  • Patent number: 10303656
    Abstract: A method, a system, and a computer program product for performing a backup of data are disclosed. A grid server in a plurality of grid servers is selected for deduplicating a segment of data in a plurality of segments of data contained within a data stream. The segment of data is forwarded to the selected grid server for deduplication. A zone contained within the forwarded segment of data is deduplicated using the selected server. The deduplication is performed based on a listing of a plurality of zone stamps. Each zone stamp in the plurality of zone stamps represents a zone in a plurality of zones deduplicated by at least one server in the plurality of grid servers.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: May 28, 2019
    Assignee: Exagrid Systems, Inc.
    Inventors: David G. Therrien, Stephen M. Stickles, Thomas J. Gillispie, William Andrews
  • Patent number: 10114831
    Abstract: 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.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: October 30, 2018
    Assignee: Exagrid Systems, Inc.
    Inventors: Adrian VanderSpek, Jamey C. Poirier, Lucas H. Makosky, Ashok T. Ramu, Mark Bennett Hecker, Thomas G. Hansen, David G. Therrien
  • Patent number: 10067946
    Abstract: A method, a system, and a computer program product for performing next level multi-level deduplication. A first zone stamp for a first data zone is generated and compared to a second zone stamp representing a second data zone, where the zones are first level data zones. The first and second data zones are deduplicated when the first zone stamp matches the second zone stamp. A second-level first zone stamp is selected when there is no match between first and second zone stamps. The second-level first zone stamp, representing a second-level first data zone in the first data zone, is compared to the second zone stamp and/or a second-level second zone stamp representing a second-level second data zone. The second-level first zone and one of the second data zone and the second-level second zone are deduplicated when the second-level first zone stamp matches one of the second zone stamp and the second-level second zone stamp.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: September 4, 2018
    Assignee: Exagrid Systems, Inc.
    Inventors: Adrian T. VanderSpek, Daniel P. Martinelli, David G. Therrien
  • Publication number: 20170277711
    Abstract: A method, a system, and a computer-implemented method for performing multi-level deduplication of data are disclosed. A zone stamp is generated for each zone in a plurality of zones contained in at least one data stream. The zone stamp is compared to another zone stamp. The zone stamp and another zone stamp represent zones in the plurality of zones. The comparison is performed for zones at corresponding zone levels based on a determination that a zone stamp of a zone of a preceding zone level is not similar to another zone stamp of another preceding zone level. The zone at the preceding zone level includes at least one zone of a next zone level having a size smaller than or equal to a size of the zone of the preceding zone level. The zone and another zone are deduplicated based on a determination that the zone stamp is similar to another zone stamp.
    Type: Application
    Filed: June 12, 2017
    Publication date: September 28, 2017
    Applicant: Exagrid Systems, Inc.
    Inventors: David G. Therrien, Yee-ching Chao, Thomas G. Hansen, Daniel P. Martinelli, Lucas H. Makosky, Mark B. Hecker, Stephen A. Smith, Adrian VanderSpek
  • Publication number: 20170212907
    Abstract: A method, a system, and a computer program product for performing next level multi-level deduplication. A first zone stamp for a first data zone is generated and compared to a second zone stamp representing a second data zone, where the zones are first level data zones. The first and second data zones are deduplicated when the first zone stamp matches the second zone stamp. A second-level first zone stamp is selected when there is no match between first and second zone stamps. The second-level first zone stamp, representing a second-level first data zone in the first data zone, is compared to the second zone stamp and/or a second-level second zone stamp representing a second-level second data zone. The second-level first zone and one of the second data zone and the second-level second zone are deduplicated when the second-level first zone stamp matches one of the second zone stamp and the second-level second zone stamp.
    Type: Application
    Filed: April 7, 2017
    Publication date: July 27, 2017
    Inventors: Adrian T. VanderSpek, Daniel P. Martinelli, David G. Therrien
  • Patent number: 9703797
    Abstract: A method, a system, and a computer-implemented method for performing multi-level deduplication of data are disclosed. A zone stamp is generated for each zone in a plurality of zones contained in at least one data stream. The zone stamp is compared to another zone stamp. The zone stamp and another zone stamp represent zones in the plurality of zones. The comparison is performed for zones at corresponding zone levels based on a determination that a zone stamp of a zone of a preceding zone level is not similar to another zone stamp of another preceding zone level. The zone at the preceding zone level includes at least one zone of a next zone level having a size smaller than or equal to a size of the zone of the preceding zone level. The zone and another zone are deduplicated based on a determination that the zone stamp is similar to another zone stamp.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: July 11, 2017
    Assignee: Exagrid Systems, Inc.
    Inventors: David G. Therrien, Yee-ching Chao, Thomas G. Hansen, Daniel P. Martinelli, Lucas H. Makosky, Mark B. Hecker, Stephen A. Smith, Adrian VanderSpek
  • Publication number: 20170046360
    Abstract: A method, a system, and a computer program product for performing a backup of data are disclosed. A grid server in a plurality of grid servers is selected for deduplicating a segment of data in a plurality of segments of data contained within a data stream. The segment of data is forwarded to the selected grid server for deduplication. A zone contained within the forwarded segment of data is deduplicated using the selected server. The deduplication is performed based on a listing of a plurality of zone stamps. Each zone stamp in the plurality of zone stamps represents a zone in a plurality of zones deduplicated by at least one server in the plurality of grid servers.
    Type: Application
    Filed: August 13, 2015
    Publication date: February 16, 2017
    Applicant: Exagrid Systems, Inc.
    Inventors: David G. Therrien, Stephen M. Stickles, Thomas J. Gillispie, William Andrews
  • Publication number: 20160253351
    Abstract: A system, a method, and a computer program product for performing deduplication of data using a scalable deduplication grid are disclosed. A listing of a plurality of zone stamps is generated, where each zone stamp represents a zone in the plurality of zones in a data stream. The listing contains a logical arrangement of the plurality of zone stamps obtained from each storage location and being accessible by a plurality of servers. A first zone stamp in the listing is compared to a second zone stamp in the listing. The first and second zones are delta-compressed based on a determination that the first zone stamp is substantially similar to the second zone stamp. A server is selected to perform the comparison and delta-compression.
    Type: Application
    Filed: February 27, 2015
    Publication date: September 1, 2016
    Inventors: Thomas G. Hansen, Daniel P. Martinelli, Lucas H. Makosky, Mark B. Hecker, Stephen A. Smith, Adrian T. VanderSpek, David G. Therrien
  • Publication number: 20160239511
    Abstract: A method, a system, and a computer-implemented method for performing multi-level deduplication of data are disclosed. A zone stamp is generated for each zone in a plurality of zones contained in at least one data stream. The zone stamp is compared to another zone stamp. The zone stamp and another zone stamp represent zones in the plurality of zones. The comparison is performed for zones at corresponding zone levels based on a determination that a zone stamp of a zone of a preceding zone level is not similar to another zone stamp of another preceding zone level. The zone at the preceding zone level includes at least one zone of a next zone level having a size smaller than or equal to a size of the zone of the preceding zone level. The zone and another zone are deduplicated based on a determination that the zone stamp is similar to another zone stamp.
    Type: Application
    Filed: February 18, 2015
    Publication date: August 18, 2016
    Inventors: David G. Therrien, Yee-ching Chao, Thomas G. Hansen, Daniel P. Martinelli, Lucas H. Makosky, Mark B. Hecker, Stephen A. Smith, Adrian VanderSpek
  • Patent number: 9223812
    Abstract: A system, a method, and a computer program product for adaptive scheduled periodic caching are disclosed. A data stream is received. The data stream contains a plurality of versions of data arranged in a plurality of data clusters. Each data cluster includes an anchor version having a plurality of versions of data dependent on the anchor version. A size of each anchor version of each data cluster is determined. A number of versions of data dependent on each anchor version is also determined. For each anchor version, a ratio of the determined number of dependent versions of data to the determined size of each anchor is computed. At least one anchor version for storing in a memory location is selected based on the computed ratio.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: December 29, 2015
    Assignee: Exagrid Systems, Inc.
    Inventors: David G. Therrien, Adrian VanderSpek, Yee-ching Chao, Jamey C. Poirier
  • Patent number: 9223794
    Abstract: A method, a system, an apparatus, and a computer readable medium for transmission of data across a network are disclosed.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: December 29, 2015
    Assignee: Exagrid Systems, Inc.
    Inventors: David G. Therrien, David Andrew Thompson
  • Publication number: 20140337299
    Abstract: A method, a system, an apparatus, and a computer readable medium for transmission of data across a network are disclosed.
    Type: Application
    Filed: July 28, 2014
    Publication date: November 13, 2014
    Inventors: David G. Therrien, David Andrew Thompson
  • Patent number: 8812738
    Abstract: A method, a system, an apparatus, and a computer readable medium for transmission of data across a network are disclosed.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: August 19, 2014
    Assignee: Exagrid Systems, Inc.
    Inventors: David G. Therrien, David Andrew Thompson
  • Publication number: 20140143219
    Abstract: A system, a method, and a computer program product for adaptive scheduled periodic caching are disclosed. A data stream is received. The data stream contains a plurality of versions of data arranged in a plurality of data clusters. Each data cluster includes an anchor version having a plurality of versions of data dependent on the anchor version. A size of each anchor version of each data cluster is determined. A number of versions of data dependent on each anchor version is also determined. For each anchor version, a ratio of the determined number of dependent versions of data to the determined size of each anchor is computed. At least one anchor version for storing in a memory location is selected based on the computed ratio.
    Type: Application
    Filed: November 19, 2013
    Publication date: May 22, 2014
    Inventors: David G. Therrien, Adrian VanderSpek, Yee-ching Chao, Jamey C. Poirier
  • Publication number: 20140052700
    Abstract: 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.
    Type: Application
    Filed: August 7, 2013
    Publication date: February 20, 2014
    Applicant: Exagrid Systems, Inc.
    Inventors: Adrian VanderSpek, Jamey C. Poirier, Lucas H. Makosky, Ashok T. Ramu, Mark Bennett Hecker, Thomas G. Hansen, David G. Therrien