Patents by Inventor David Ngo

David Ngo 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).

  • Patent number: 9218374
    Abstract: A storage system according to certain embodiments includes a client-side signature repository that includes information representative of a set of data blocks stored in primary storage. During restore operations, the system can use the client-side signature repository to identify data blocks located in primary storage. The system can also use the client-side signature repository to identify multiple locations within primary storage where instances of some of the data blocks to be restored are located. Accordingly, during a restore operation of one client computing device, the system can source a data block to be restored to the client computing device from another client computing device that is in primary storage.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: December 22, 2015
    Assignee: COMMVAULT SYSTEMS, INC.
    Inventors: Marcus S. Muller, David Ngo
  • Patent number: 9208160
    Abstract: The present invention relates to a method for performing an image level copy of an information store. The present invention comprises performing a snapshot of an information store that indexes the contents of the information store, retrieving data associated with the contents of the information store from a file allocation table, copying the contents of the information store to a storage device based on the snapshot, and associating the retrieved data with the copied contents to provide file system information for the copied contents.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: December 8, 2015
    Assignee: Commvault Systems, Inc.
    Inventors: Anand Prahlad, David Ngo, Prakash Varadharajan, Rahul S. Pawar, Avinash Kumar
  • Patent number: 9201917
    Abstract: Methods and systems are described for performing storage operations on electronic data in a network. In response to the initiation of a storage operation and according to a first set of selection logic, a media management component is selected to manage the storage operation. In response to the initiation of a storage operation and according to a second set of selection logic, a network storage device to associate with the storage operation. The selected media management component and the selected network storage device perform the storage operation on the electronic data.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: December 1, 2015
    Assignee: Commvault Systems, Inc.
    Inventors: Rajiv Kottomtharayil, Parag Gokhale, Anand Prahlad, Manoj Kumar Vijayan, David Ngo, Varghese Devassy
  • Publication number: 20150339296
    Abstract: Systems and methods for managing electronic data are disclosed. Various data management operations can be performed based on a metabase formed from metadata. Such metadata can be identified from an index of data interactions generated by a journaling module, and obtained from their associated data objects stored in one or more storage devices. In various embodiments, such processing of the index and storing of the metadata can facilitate, for example, enhanced data management operations, enhanced data identification operations, enhanced storage operations, data classification for organizing and storing the metadata, cataloging of metadata for the stored metadata, and/or user interfaces for managing data. In various embodiments, the metabase can be configured in different ways. For example, the metabase can be stored separately from the data objects so as to allow obtaining of information about the data objects without accessing the data objects or a data structure used by a file system.
    Type: Application
    Filed: July 30, 2015
    Publication date: November 26, 2015
    Inventors: Anand PRAHLAD, Jeremy Alan SCHWARTZ, David NGO, Brian BROCKWAY, Marcus S. MULLER
  • Patent number: 9158835
    Abstract: A method and system for creating an index of content without interfering with the source of the content includes an offline content indexing system that creates an index of content from an offline copy of data. The system may associate additional properties or tags with data that are not part of traditional indexing of content, such as the time the content was last available or user attributes associated with the content. Users can search the created index to locate content that is no longer available or based on the associate attributes.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: October 13, 2015
    Assignee: Commvault Systems, Inc.
    Inventors: Anand Prahlad, Jeremy A. Schwartz, David Ngo, Brian Brockway, Marcus S. Muller, Parag Gokhale, Rajiv Kottomtharayil
  • Patent number: 9098542
    Abstract: Systems and methods for managing electronic data are disclosed. Various data management operations can be performed based on a metabase formed from metadata. Such metadata can be identified from an index of data interactions generated by a journaling module, and obtained from their associated data objects stored in one or more storage devices. In various embodiments, such processing of the index and storing of the metadata can facilitate, for example, enhanced data management operations, enhanced data identification operations, enhanced storage operations, data classification for organizing and storing the metadata, cataloging of metadata for the stored metadata, and/or user interfaces for managing data. In various embodiments, the metabase can be configured in different ways. For example, the metabase can be stored separately from the data objects so as to allow obtaining of information about the data objects without accessing the data objects or a data structure used by a file system.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: August 4, 2015
    Assignee: Commvault Systems, Inc.
    Inventors: Anand Prahlad, Jeremy Alan Schwartz, David Ngo, Brian Brockway, Marcus S. Muller
  • Publication number: 20150205853
    Abstract: Systems and methods for replicating database data and generating read-only copies of the replicated data in a clean shutdown state. For example, systems can include a tracking module (e.g., a filter driver) that monitors transactions from a database application to a source storage device to generate log entries having at least one marker indicating a known good state of the application. The systems further include a computer coupled to a target storage device comprising a database and log files. The computer processes the transactions, based on the log entries, to replicate data to the target storage device; performs a first snapshot on data stored in the database and log files; replays into the database data stored in the log files; performs another snapshot on the database; and reverts the database back to a state in which the database existed at the time of the first snapshot.
    Type: Application
    Filed: March 31, 2015
    Publication date: July 23, 2015
    Inventor: David NGO
  • Publication number: 20150199375
    Abstract: Performing data management operations on replicated data in a computer network. Log entries are generated for data management operations of an application executing on a source system. Consistency point entries are used to indicate a time of a known good, or recoverable, state of the application. A destination system is configured to process a copy of the log and consistency point entries to replicate data in a replication volume, the replicated data being a copy of the application data on the source system. When the replicated data represents a known good state of the application, as determined by the consistency point entries, the destination system(s) may perform a storage operation (e.g., snapshot, backup) to copy the replicated data and to logically associate the copied data with a time information (e.g., time stamp) indicative of the source system time when the application was in the known good state.
    Type: Application
    Filed: March 25, 2015
    Publication date: July 16, 2015
    Inventors: Anand PRAHLAD, David NGO
  • Publication number: 20150199390
    Abstract: A computerized method for sharing removable storage media in a network, the method comprising associating, in an index entry, a first piece of removable storage media in a first storage device with at least a first storage policy copy and a second storage policy copy; copying, to the first piece of removable storage media, data associated with the first storage policy copy; and copying, to the first piece of removable storage media, data associated with the second storage policy copy.
    Type: Application
    Filed: March 26, 2015
    Publication date: July 16, 2015
    Inventors: Rajiv KOTTOMTHARAYIL, Parag GOKHALE, Anand PRAHLAD, Manoj KUMAR VIJAYAN, David NGO, Varghese DEVASSY
  • Publication number: 20150169413
    Abstract: A system and method for using a snapshot as a data source is described. In some cases, the system stores a snapshot and an associated data structure or index to storage media to create a secondary copy of a volume of data. In some cases, the associated index includes application specific data about a file system or other application that created the data to identify the location of the data. The associated index may include three entries, and may be used to facilitate the recovery of data via the snapshot.
    Type: Application
    Filed: February 10, 2015
    Publication date: June 18, 2015
    Inventors: David Ngo, Anand Prahlad, Parag Gokhale, Rahul S. Pawar
  • Publication number: 20150154220
    Abstract: A system and method for data deduplication is presented. Data received from one or more computing systems is deduplicated, and the results of the deduplication process stored in a reference table. A representative subset of the reference table is shared among a plurality of systems that utilize the data deduplication repository. This representative subset of the reference table can be used by the computing systems to deduplicate data locally before it is sent to the repository for storage. Likewise, it can be used to allow deduplicated data to be returned from the repository to the computing systems. In some cases, the representative subset can be a proper subset wherein a portion of the referenced table is identified shared among the computing systems to reduce bandwidth requirements for reference-table synchronization.
    Type: Application
    Filed: November 26, 2014
    Publication date: June 4, 2015
    Inventors: David NGO, Marcus S. MULLER
  • Patent number: 9047357
    Abstract: Systems and methods for replicating database data in a dirty shutdown state and generating copies of the replicated data in a clean shutdown state. For example, systems can include a tracking module (e.g., a filter driver) that monitors transactions from a database application to a source database stored on a source storage device to generate log entries having at least one marker indicating a known good state of the application. The systems further include a computer coupled to a target storage device comprising a target database and log files.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: June 2, 2015
    Assignee: CommVault Systems, Inc.
    Inventor: David Ngo
  • Patent number: 9020898
    Abstract: Performing data management operations on replicated data in a computer network. Log entries are generated for data management operations of an application executing on a source system. Consistency point entries are used to indicate a time of a known good, or recoverable, state of the application. A destination system is configured to process a copy of the log and consistency point entries to replicate data in a replication volume, the replicated data being a copy of the application data on the source system. When the replicated data represents a known good state of the application, as determined by the consistency point entries, the destination system(s) may perform a storage operation (e.g., snapshot, backup) to copy the replicated data and to logically associate the copied data with a time information (e.g., time stamp) indicative of the source system time when the application was in the known good state.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: April 28, 2015
    Assignee: CommVault Systems, Inc.
    Inventors: Anand Prahlad, David Ngo
  • Patent number: 9021213
    Abstract: A computerized method for sharing removable storage media in a network, the method comprising associating, in an index entry, a first piece of removable storage media in a first storage device with at least a first storage policy copy and a second storage policy copy; copying, to the first piece of removable storage media, data associated with the first storage policy copy; and copying, to the first piece of removable storage media, data associated with the second storage policy copy.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: April 28, 2015
    Assignee: CommVault Systems, Inc.
    Inventors: Rajiv Kottomtharayil, Parag Gokhale, Anand Prahlad, Manoj Kumar Vijayan, David Ngo, Varghese Devassy
  • Patent number: 9002799
    Abstract: Methods and systems for synchronizing data files in a storage network between a first and a second storage device is provided. The method includes storing first data files associated with the first storage device to a storage medium, whereby the first data files include first data records. The storage medium may then be transferred to the second storage device. The first data files from the storage medium may be loaded onto the second storage device. The second data records from the first storage device may be received, and the first and second data records are compared. The first data files at the second storage device may be updated based on the comparison of the first and second data records.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: April 7, 2015
    Assignee: CommVault Systems, Inc.
    Inventors: David Ngo, Vijay Agrawal
  • Patent number: 9003374
    Abstract: Systems and methods for intelligent data replication are provided, which may include the identification and use of consistency points in application data, such that one or more replication volumes may be created using an “application aware” replication process that allows the system to intelligently replicate data or other information (e.g., metadata) relating to a particular process, application or specified set of data.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: April 7, 2015
    Assignee: CommVault Systems, Inc.
    Inventor: David Ngo
  • Publication number: 20150095285
    Abstract: The present invention relates to a method for performing an image level copy of an information store. The present invention comprises performing a snapshot of an information store that indexes the contents of the information store, retrieving data associated with the contents of the information store from a file allocation table, copying the contents of the information store to a storage device based on the snapshot, and associating the retrieved data with the copied contents to provide file system information for the copied contents.
    Type: Application
    Filed: October 9, 2014
    Publication date: April 2, 2015
    Inventors: Anand PRAHLAD, David NGO, Prakash VARADHARAJAN, Rahul S. PAWAR, Avinash KUMAR
  • Publication number: 20150095571
    Abstract: Methods and systems are described for performing storage operations on electronic data in a network. In response to the initiation of a storage operation and according to a first set of selection logic, a media management component is selected to manage the storage operation. In response to the initiation of a storage operation and according to a second set of selection logic, a network storage device to associate with the storage operation. The selected media management component and the selected network storage device perform the storage operation on the electronic data.
    Type: Application
    Filed: September 19, 2014
    Publication date: April 2, 2015
    Inventors: Rajiv KOTTOMTHARAYIL, Parag GOKHALE, Anand PRAHLAD, Manoj Kumar VIJAYAN, David NGO, Varghese DEVASSY
  • Patent number: 8976112
    Abstract: Systems and methods for transmitting haptic messages are disclosed. For example, one disclosed method includes the steps of: receiving at least one sensor signal from at least one sensor of a mobile device, the at least one sensor signal associated with a movement of the mobile device, determining a message to be displayed in a user interface based at least in part on the at least one sensor signal, and causing the message to be displayed.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: March 10, 2015
    Assignee: Immersion Corporation
    Inventors: David Birnbaum, Chris Ullrich, Peter Rubin, Phong David Ngo, Leo Kopelow
  • Patent number: 8959299
    Abstract: A system and method for using a snapshot as a data source is described. In some cases, the system stores a snapshot and an associated data structure or index to storage media to create a secondary copy of a volume of data. In some cases, the associated index includes application specific data about a file system or other application that created the data to identify the location of the data. The associated index may include three entries, and may be used to facilitate the recovery of data via the snapshot.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: February 17, 2015
    Assignee: CommVault Systems, Inc.
    Inventors: David Ngo, Anand Prahlad, Parag Gokhale, Rahul S. Pawar