Patents by Inventor Assar Westerlund

Assar Westerlund 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).

  • Indexing deduplicated data
    Patent number: 10078648
    Abstract: In general, in one aspect, a method for managing data in a data storage system includes receiving identifiers corresponding to different respective entries of a map stored in the data storage system, with a particular identifier corresponding to a particular entry of the map, the particular entry including a computed value corresponding to a particular portion of data stored in the data storage system and metadata indicating a location where the particular portion of data is stored in the data storage system, selecting, according to a first selection criterion, at least some of the identifiers for storage in a first portion of an index, and selecting, according to a second selection criterion, at least some of the identifiers for storage in a second portion of the index.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: September 18, 2018
    Assignee: Red Hat, Inc.
    Inventors: Michael Fortson, Jonathan Coburn, Michael Sclafani, Thomas Jaskiewicz, Assar Westerlund, Hooman Vassef
  • Managing deduplication of stored data
    Patent number: 9092151
    Abstract: In one aspect, in general, a method for managing data includes receiving, at a data deduplication engine of a computer system, data to be stored in a data storage system, computing a first value corresponding to at least one portion of the received data, determining that the first value matches a second value stored in a collection of identifiers, each identifier corresponding to a particular portion of data stored in the data storage system, each identifier comprising a computed value corresponding to the particular portion of data and including metadata indicating a location where the particular portion of data is being stored in the data storage system, and based on the determination that the first value matches a second value stored in the collection of identifiers, reallocating one or more physical locations from corresponding one or more virtual locations to different respective one or more virtual locations.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: July 28, 2015
    Assignee: Permabit Technology Corporation
    Inventors: Jered J. Floyd, Michael Fortson, Assar Westerlund, Jonathan Coburn
  • Indexing deduplicated data
    Patent number: 9069707
    Abstract: In general, in one aspect, a method for managing data in a data storage system includes receiving identifiers corresponding to different respective entries of a map stored in the data storage system, with a particular identifier corresponding to a particular entry of the map, the particular entry including a computed value corresponding to a particular portion of data stored in the data storage system and metadata indicating a location where the particular portion of data is stored in the data storage system, selecting, according to a first selection criterion, at least some of the identifiers for storage in a first portion of an index, and selecting, according to a second selection criterion, at least some of the identifiers for storage in a second portion of the index.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: June 30, 2015
    Assignee: Permabit Technology Corp.
    Inventors: Michael Fortson, Jonathan Coburn, Michael Sclafani, Thomas Jaskiewicz, Assar Westerlund, Hooman Vassef
  • Managing deduplication of stored data
    Patent number: 8898107
    Abstract: In one aspect, in general, a method for managing data in a data storage system comprises receiving data to be stored in the data storage system, computing values corresponding to different respective portions of the received data, generating identifiers corresponding to different respective portions of the received data, with an identifier corresponding to a particular portion of data including the computed value corresponding to the particular portion of data and metadata indicating a location where the particular portion of data is being stored in the data storage system, and storing at least some of the identifiers in an index until the index reaches a predetermined size.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: November 25, 2014
    Assignee: Permabit Technology Corp.
    Inventors: Jered J. Floyd, Michael Fortson, Assar Westerlund, Jonathan Coburn
  • Managing deduplication of stored data
    Patent number: 8463742
    Abstract: Managing data in a data storage system includes: receiving data to be stored in the data storage system; computing values corresponding to different respective portions of the received data; generating identifiers corresponding to different respective portions of the received data, with an identifier corresponding to a particular portion of data including the computed value corresponding to the particular portion of data and metadata indicating a location where the particular portion of data is being stored in the data storage system; storing at least some of the identifiers in an index until the index reaches a predetermined size; and in response to determining that a first identifier corresponding to a first portion of data, received after the index reached the predetermined size, was not already stored in the index before the first portion of data was received, storing the first identifier in the index and designating for removal at least a second identifier corresponding to a second portion of data to be
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: June 11, 2013
    Assignee: Permabit Technology Corp.
    Inventors: Jered J. Floyd, Michael Fortson, Assar Westerlund, Jonathan Coburn