Patents by Inventor Darren P. Schack

Darren P. Schack 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: 20110035412
    Abstract: Systems and methods are disclosed that provide an indexing data structure. In one embodiment, the indexing data structure is mirrored index tree where the copies of the nodes of the tree are stored across devices in a distributed system. In one embodiment, nodes that are stored on an offline device are restored, and an offline device that comes back online is merged into the distributed system and given access to the current indexing data structure. In one embodiment, the indexing data structure is traversed to locate and restore nodes that are stored on offline devices of the distributed system.
    Type: Application
    Filed: August 24, 2010
    Publication date: February 10, 2011
    Applicant: ISILON SYSTEMS, INC.
    Inventors: Neal T. Fachan, Aaron J. Passey, Darren P. Schack
  • Patent number: 7882068
    Abstract: In one embodiment, a user or client device communicates with a distributed file system comprised of one or more physical nodes. The data on each of the physical nodes store metadata about files and directories within the file system. Some of the embodiments permit a user to take a snapshot of data stored on the file system. The snapshot may include a single file, a single directory, a plurality of files within a directory, a plurality of directories, a path on the file system that includes nested files and subdirectories, or more than one path on the file system that each includes nested files and directories. In some embodiments, systems and methods intelligently choose whether to use copy-on-write or point-in-time copy when saving data in a snapshot version of a file whose current version is being overwritten. In some embodiments, systems and methods allow snapshot users to return from a snapshot directory to the immediate parent directory from which the user entered into the snapshot.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: February 1, 2011
    Assignee: Isilon Systems, Inc.
    Inventors: Darren P. Schack, Eric M. Lemar, Neal T. Fachan
  • Patent number: 7882071
    Abstract: In one embodiment, a user or client device is connected to a distributed file system comprised of one or more physical nodes. The data on each of the physical nodes store metadata about files and directories within the file system. Some of the embodiments permit a user to take a snapshot of data stored on the file system. The snapshot may include a single file, a single directory, a plurality of files within a directory, a plurality of directories, a path on the file system that includes nested files and subdirectories, or more than one path on the file system that each includes nested files and directories. In one embodiment, previous versions of a file or directory are stored only in response to a request to modify the file or directory. The system creates and updates a snapshot tracking data structure which provides information regarding each file or directory governed by the snapshot that was modified or deleted after the snapshot was taken.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: February 1, 2011
    Assignee: Isilon Systems, Inc.
    Inventors: Neal T. Fachan, Justin M. Husted, Eric M. Lemar, Darren P. Schack
  • Publication number: 20110016353
    Abstract: Systems and methods are provided for scanning files and directories in a distributed file system on a network of nodes. The nodes include metadata with attribute information corresponding to files and directories distributed on the nodes. In one embodiment, the files and directories are scanned by commanding the nodes to search their respective metadata for a selected attribute. At least two of the nodes are capable of searching their respective metadata in parallel. In one embodiment, the distributed file system commands the nodes to search for metadata data structures having location information corresponding to a failed device on the network. The metadata data structures identified in the search may then be used to reconstruct lost data that was stored on the failed device.
    Type: Application
    Filed: July 15, 2010
    Publication date: January 20, 2011
    Applicant: ISILON SYSTEM, INC.
    Inventors: Paul A. Mikesell, Robert J. Anderson, Peter J. Godman, Darren P. Schack, Nathan E. Dire
  • Publication number: 20100257219
    Abstract: A distributed file system enables the intelligent storing and retrieval of files among a plurality of storage units. The distributed file system utilizes a metadata data structure to track and manage detailed information about each file, including, for example, the device and block locations of the file's data blocks, to permit different levels of replication and/or redundancy. The distributed file system includes a switch to receive a read request for a file and to send the read request to one of the storage units. Each of the plurality of storage units is operable to monitor access to the file, such that a block cache module is operable to perform a scalable number of packet read aheads, wherein the scalable number is based on at least a current read rate and a current latency of a link to access the at least one file.
    Type: Application
    Filed: March 19, 2010
    Publication date: October 7, 2010
    Applicant: ISILON SYSTEMS, INC.
    Inventors: Sujal M. Patel, Paul A. Mikesell, Darren P. Schack
  • Publication number: 20100235413
    Abstract: The intelligent distributed file system enables the storing of file data among a plurality of smart storage units which are accessed as a single file system. The intelligent distributed file system utilizes a metadata data structure to track and manage detailed information about each file, including, for example, the device and block locations of the file's data blocks, to permit different levels of replication and/or redundancy within a single file system, to facilitate the change of redundancy parameters, to provide high-level protection for metadata, to replicate and move data in real-time, and so forth.
    Type: Application
    Filed: May 25, 2010
    Publication date: September 16, 2010
    Applicant: ISILON SYSTEMS, INC.
    Inventors: Sujal M. Patel, Paul A. Mikesell, Darren P. Schack
  • Patent number: 7797283
    Abstract: Systems and methods are disclosed that provide an indexing data structure. In one embodiment, the indexing data structure is mirrored index tree where the copies of the nodes of the tree are stored across devices in a distributed system. In one embodiment, nodes that are stored on an offline device are restored, and an offline device that comes back online is merged into the distributed system and given access to the current indexing data structure. In one embodiment, the indexing data structure is traversed to locate and restore nodes that are stored on offline devices of the distributed system.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: September 14, 2010
    Assignee: Isilon Systems, Inc.
    Inventors: Neal T. Fachan, Aaron J. Passey, Darren P. Schack
  • Patent number: 7788303
    Abstract: Systems and methods are provided for scanning files and directories in a distributed file system on a network of nodes. The nodes include metadata with attribute information corresponding to files and directories distributed on the nodes. In one embodiment, the files and directories are scanned by commanding the nodes to search their respective metadata for a selected attribute. At least two of the nodes are capable of searching their respective metadata in parallel. In one embodiment, the distributed file system commands the nodes to search for metadata data structures having location information corresponding to a failed device on the network. The metadata data structures identified in the search may then be used to reconstruct lost data that was stored on the failed device.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: August 31, 2010
    Assignee: Isilon Systems, Inc.
    Inventors: Paul A. Mikesell, Robert J. Anderson, Peter J. Godman, Darren P. Schack, Nathan E. Dire
  • Publication number: 20100161557
    Abstract: In one embodiment, a user or client device is connected to a distributed file system comprised of one or more physical nodes. The data on each of the physical nodes store metadata about files and directories within the file system. Some of the embodiments permit a user to take a snapshot of data stored on the file system. The snapshot may include a single file, a single directory, a plurality of files within a directory, a plurality of directories, a path on the file system that includes nested files and subdirectories, or more than one path on the file system that each includes nested files and directories. According to one embodiment, the system stores representations of the snapshots that govern a file or directory and its descendants within metadata associated with that file or directory. In one embodiment, before modifying a file or directory, the system updates the representations of the governing snapshots by traversing the metadata of ancestors of the file or directory.
    Type: Application
    Filed: March 4, 2010
    Publication date: June 24, 2010
    Inventors: Robert J. Anderson, Neal T. Fachan, Justin M. Husted, Eric M. Lemar, Aaron J. Passey, Darren P. Schack
  • Publication number: 20100161556
    Abstract: In one embodiment, a user or client device is connected to a distributed file system comprised of one or more physical nodes. The data on each of the physical nodes store metadata about files and directories within the file system. Some of the embodiments permit a user to take a snapshot of data stored on the file system. The snapshot may include a single file, a single directory, a plurality of files within a directory, a plurality of directories, a path on the file system that includes nested files and subdirectories, or more than one path on the file system that each includes nested files and directories. In one embodiment, the metadata comprises mini-snapshots for directories representing a path from the root of the file system to the root of the snapshot. The mini-snapshots serve as stand-ins for portions of the file system which are not included in the snapshot, but which permit access to the snapshot data in an intuitive way.
    Type: Application
    Filed: March 4, 2010
    Publication date: June 24, 2010
    Inventors: Robert J. Anderson, Neal T. Fachan, Eric M. Lemar, Aaron J. Passey, David W. Richards, Darren P. Schack
  • Patent number: 7743033
    Abstract: The intelligent distributed file system enables the storing of file data among a plurality of smart storage units which are accessed as a single file system. The intelligent distributed file system utilizes a metadata data structure to track and manage detailed information about each file, including, for example, the device and block locations of the file's data blocks, to permit different levels of replication and/or redundancy within a single file system, to facilitate the change of redundancy parameters, to provide high-level protection for metadata, to replicate and move data in real-time, and so forth.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: June 22, 2010
    Assignee: Isilon Systems, Inc.
    Inventors: Sujal M. Patel, Paul A. Mikesell, Darren P. Schack
  • Publication number: 20100131776
    Abstract: A number of digital content rendering modules are equipped such that selective subsets of the modules may be employed to render digital content of different media, and of different format types. The modules are organized into a hierarchy, with a selected one occupying a root position of the hierarchy, to exclusively receive the digital contents to be rendered, and that each module is further responsible for verifying the integrity of its immediate downstream modules, to collectively protect the digital contents being rendered. Additionally, in accordance with another aspect, a tamper resistant module is employed to recover digital contents provided in a protected state, obfuscating the recovery. Further, the modules may be of different application domains.
    Type: Application
    Filed: November 24, 2009
    Publication date: May 27, 2010
    Applicant: REALNETWORKS, INC.
    Inventors: Jeffrey M. Ayars, Rahul Agarwal, Alain Hamel, Darren P. Schack
  • Patent number: 7680842
    Abstract: In one embodiment, a user or client device is connected to a distributed file system comprised of one or more physical nodes. The data on each of the physical nodes store metadata about files and directories within the file system. Some of the embodiments permit a user to take a snapshot of data stored on the file system. The snapshot may include a single file, a single directory, a plurality of files within a directory, a plurality of directories, a path on the file system that includes nested files and subdirectories, or more than one path on the file system that each includes nested files and directories. In one embodiment, the metadata comprises mini-snapshots for directories representing a path from the root of the file system to the root of the snapshot. The mini-snapshots serve as stand-ins for portions of the file system which are not included in the snapshot, but which permit access to the snapshot data in an intuitive way.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: March 16, 2010
    Assignee: Isilon Systems, Inc.
    Inventors: Robert J. Anderson, Neal T. Fachan, Eric M. Lemar, Aaron J. Passey, David W. Richards, Darren P. Schack
  • Patent number: 7680836
    Abstract: In one embodiment, a user or client device is connected to a distributed file system comprised of one or more physical nodes. The data on each of the physical nodes store metadata about files and directories within the file system. Some of the embodiments permit a user to take a snapshot of data stored on the file system. The snapshot may include a single file, a single directory, a plurality of files within a directory, a plurality of directories, a path on the file system that includes nested files and subdirectories, or more than one path on the file system that each include nested files and directories. According to one embodiment, the system stores representations of the snapshots that govern a file or directory and its descendants within metadata associated with that file or directory. Before modifying a file or directory, the system updates the representations of the governing snapshots by traversing the metadata of ancestors of the file or directory.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: March 16, 2010
    Assignee: Isilon Systems, Inc.
    Inventors: Robert J. Anderson, Neal T. Fachan, Justin M. Husted, Eric M. Lemar, Aaron J. Passey, Darren P. Schack
  • Patent number: 7636860
    Abstract: A number of digital content rendering modules are equipped such that selective subsets of the modules may be employed to render digital content of different media, and of different format types. The modules are organized into a hierarchy, with a selected one occupying a root position of the hierarchy, to exclusively receive the digital contents to be rendered, and that each module is further responsible for verifying the integrity of its immediate downstream modules, to collectively protect the digital contents being rendered. Additionally, in accordance with another aspect, a tamper resistant module is employed to recover digital contents provided in a protected state, obfuscating the recovery. Further, the modules may be of different application domains.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: December 22, 2009
    Assignee: RealNetworks, Inc.
    Inventors: Jeffrey M. Ayars, Rahul Agarwal, Alain Hamel, Darren P. Schack
  • Patent number: 7509524
    Abstract: The intelligent distributed file system enables the storing of file data among a plurality of smart storage units which are accessed as a single file system. The intelligent distributed file system utilizes a metadata data structure to track and manage detailed information about each file, including, for example, the device and block locations of the file's data blocks, to permit different levels of replication and/or redundancy within a single file system, to facilitate the change of redundancy parameters, to provide high-level protection for metadata, to replicate and move data in real-time, and to permit the creation of virtual hot spares among the smart storage units without the need to idle any single smart storage unit in the intelligent distributed file system.
    Type: Grant
    Filed: August 11, 2006
    Date of Patent: March 24, 2009
    Assignee: Isilon Systems Inc.
    Inventors: Sujal M. Patel, Paul A. Mikesell, Darren P. Schack, Aaron J. Passey
  • Publication number: 20090055604
    Abstract: In one embodiment, a user or client device communicates with a distributed file system comprised of one or more physical nodes. The data on each of the physical nodes store metadata about files and directories within the file system. Some of the embodiments permit a user to take a snapshot of data stored on the file system. The snapshot may include a single file, a single directory, a plurality of files within a directory, a plurality of directories, a path on the file system that includes nested files and subdirectories, or more than one path on the file system that each includes nested files and directories. In some embodiments, systems and methods intelligently choose whether to use copy-on-write or point-in-time copy when saving data in a snapshot version of a file whose current version is being overwritten. In some embodiments, systems and methods allow snapshot users to return from a snapshot directory to the immediate parent directory from which the user entered into the snapshot.
    Type: Application
    Filed: August 21, 2007
    Publication date: February 26, 2009
    Inventors: Eric M. Lemar, Darren P. Schack, Neal T. Fachan
  • Publication number: 20090055607
    Abstract: In one embodiment, a user or client device communicates with a distributed file system comprised of one or more physical nodes. The data on each of the physical nodes store metadata about files and directories within the file system. Some of the embodiments permit a user to take a snapshot of data stored on the file system. The snapshot may include a single file, a single directory, a plurality of files within a directory, a plurality of directories, a path on the file system that includes nested files and subdirectories, or more than one path on the file system that each includes nested files and directories. In some embodiments, systems and methods intelligently choose whether to use copy-on-write or point-in-time copy when saving data in a snapshot version of a file whose current version is being overwritten. In some embodiments, systems and methods allow snapshot users to return from a snapshot directory to the immediate parent directory from which the user entered into the snapshot.
    Type: Application
    Filed: August 21, 2007
    Publication date: February 26, 2009
    Inventors: Darren P. Schack, Eric M. Lemar, Neal T. Fachan
  • Publication number: 20080243773
    Abstract: The intelligent distributed file system enables the storing of file data among a plurality of smart storage units which are accessed as a single file system. The intelligent distributed file system utilizes a metadata data structure to track and manage detailed information about each file, including, for example, the device and block locations of the file's data blocks, to permit different levels of replication and/or redundancy within a single file system, to facilitate the change of redundancy parameters, to provide high-level protection for metadata, to replicate and move data in real-time, and to permit the creation of virtual hot spares among the smart storage units without the need to idle any single smart storage unit in the intelligent distributed file system.
    Type: Application
    Filed: June 9, 2008
    Publication date: October 2, 2008
    Applicant: ISILON SYSTEMS, INC.
    Inventors: Sujal M. Patel, Paul A. Mikesell, Darren P. Schack, Aaron J. Passey
  • Publication number: 20080155191
    Abstract: Embodiments of the present invention provide systems and methods for using heterogeneous containers where the available space on the containers is of two or more different sizes. In some embodiments, the heterogeneous containers may store some data under one protection scheme and other data under one or more other data protection schemes.
    Type: Application
    Filed: December 21, 2006
    Publication date: June 26, 2008
    Inventors: Robert J. Anderson, Nate E. Dire, Neal T. Fachan, Peter J. Godman, Aaron J. Passey, David W. Richards, Darren P. Schack