Patents by Inventor Jun H. Ahn

Jun H. Ahn 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: 20210382794
    Abstract: Systems and methods for performing backup operations and other secondary copy operations for mail servers, such as Exchange servers, are described. In some cases, the systems and methods perform multi-streaming backup and other copy operations using a single mailbox agent, which launches backup streams via a coordinator that determines when to launch streams, at what mailboxes (or folders) to launch the streams, and so on. The coordinator communicates with controllers at different machines (e.g., servers) to be backed up, and may assign streams, mailboxes, and so on, to the different controllers, which perform the backup operations for their assigned mailboxes and/or clients.
    Type: Application
    Filed: June 15, 2021
    Publication date: December 9, 2021
    Inventors: Christopher A. ALONZO, Jun H. AHN, Manas Bhikchand MUTHA, Vipul PAWALE
  • Publication number: 20210365404
    Abstract: An information management system according certain aspects for archiving file system content may include a third-party application archiving data agent configured to: access third-party application archiving rules for archiving data to one or more secondary storage devices, wherein the third-party application archiving rules are defined by a third-party application to archive files associated with the third-party application; access third-party metadata associated with a plurality of files in a file system, wherein the plurality of files is associated with the third-party application and the third-party metadata is defined by the third-party application; determine whether to archive one or more files of the plurality of files based at least in part on the third-party application archiving rules and the third-party metadata; and in response to determining that a first file of the plurality of files should be archived, archive the first file to the one or more secondary storage devices.
    Type: Application
    Filed: August 9, 2021
    Publication date: November 25, 2021
    Inventors: Jun H. AHN, Waqas ASHRAF, Arun Kumar KRISHNA SHANKAR
  • Publication number: 20210357296
    Abstract: A system according to certain aspects improves the process of restoring database objects and converting those objects into another database file format. According to certain aspects, a database file is backed up in a block-level fashion. Instead of restoring the entire backup file, the information management system may restore a particular database object from a backup database file that is stored as multiple blocks or other granular units. Then, the information management system can extract the desired data from the restored block(s). By using block-level mapping and storage techniques described herein, the system can restore a database object in a backup database file without restoring the entire backup database file, thereby speeding up restore operations and reducing consumption of storage and processing resources. In addition, the information management system can convert the blocks, using a staging memory, to another database file format as desired.
    Type: Application
    Filed: July 28, 2021
    Publication date: November 18, 2021
    Inventors: Brahmaiah VALLABHANENI, Paramasivam KUMARASAMY, Rahul S. PAWAR, Henry Wallace DORNEMANN, Jun H. AHN, Muthusamy SENTHILNATHAN
  • Patent number: 11144402
    Abstract: Rather than relying on pre-defined scheduling of secondary copy operations such as backup jobs, the illustrative opportunistic approach initiates secondary copy operations based on changing operational conditions in a storage management system. An adaptive backup readiness score is based on a number of backup-readiness operational factors. An illustrative enhanced data agent which is associated with the target database application (or other executable component) may monitor the operational factors and determine the backup readiness score based on weights assigned to the respective operational factors. The enhanced data agent may evaluate recent backup jobs to determine which of the operational factors that contributed to the backup readiness score may have been most relevant.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: October 12, 2021
    Assignee: Commvault Systems, Inc.
    Inventors: Jun H. Ahn, Waqas Ashraf, Anup Kumar, Brahmaiah Vallabhaneni
  • Publication number: 20210311839
    Abstract: According to certain aspects, a system may include a data agent configured to: process a database file residing on a primary storage device(s) to identify a subset of data in the database file for archiving, the database file generated by a database application; and extract the subset of the data from the database file and store the subset of the data in an archive file on the primary storage device(s) as a plurality of blocks having a common size; and at least one secondary storage controller computer configured to, as part of a secondary copy operation in which the archive file is copied to a secondary storage device(s): copy the plurality of blocks to the secondary storage devices to create a secondary copy of the archive file; and create a table that provides a mapping between the copied plurality of blocks and corresponding locations in the secondary storage device(s).
    Type: Application
    Filed: April 23, 2021
    Publication date: October 7, 2021
    Inventors: Paramasivam KUMARASAMY, Brahmaiah VALLABHANENI, Rahul S. Pawar, Henry Wallace DORNEMANN, Jun H. AHN, Amey Vijaykumar KARANDIKAR, Amit MITKAR, Muthusamy SENTHILNATHAN, Satish Chandra KILARU
  • Patent number: 11126365
    Abstract: Certain embodiments described herein relate to an improved selective data backup system. In some embodiments, one or more components in an information management system can determine that a portion of the primary data scheduled for backup was previously backed up or is scheduled to be backed up as part of another backup operation. For example, a data agent performing a cluster-level backup operation for an entire cluster of storage servers may check whether any part of the primary data was previously backed up by a prior server-level backup operation for one of the storage servers in the cluster. If so, the data agent may skip, in the cluster-level backup operation, any portion of the primary data stored in the storage server previously backed up as part of the prior server-level backup operation.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: September 21, 2021
    Assignee: COMMVAULT SYSTEMS, INC.
    Inventors: Duncan Alden Littlefield, Rajiv Kottomtharayil, Kuldeep Kumar, Sri Karthik Bhagi, Jun H. Ahn, Parag Gokhale
  • Patent number: 11119974
    Abstract: An information management system according certain aspects for archiving file system content may include a third-party application archiving data agent configured to: access third-party application archiving rules for archiving data to one or more secondary storage devices, wherein the third-party application archiving rules are defined by a third-party application to archive files associated with the third-party application; access third-party metadata associated with a plurality of files in a file system, wherein the plurality of files is associated with the third-party application and the third-party metadata is defined by the third-party application; determine whether to archive one or more files of the plurality of files based at least in part on the third-party application archiving rules and the third-party metadata; and in response to determining that a first file of the plurality of files should be archived, archive the first file to the one or more secondary storage devices.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: September 14, 2021
    Assignee: Commvault Systems, Inc.
    Inventors: Jun H. Ahn, Waqas Ashraf, Arun Kumar Krishna Shankar
  • Patent number: 11119865
    Abstract: A system according to certain aspects improves the process of restoring database objects and converting those objects into another database file format. According to certain aspects, a database file is backed up in a block-level fashion. Instead of restoring the entire backup file, which can consume a large amount of time and computing resources, the information management system may restore a particular database object from a backup database file that is stored as multiple blocks or other granular units. Then, the information management system can extract the desired data from the restored block(s). By using block-level mapping and storage techniques described herein, the system can restore a database object in a backup database file without restoring the entire backup database file, thereby speeding up restore operations and reducing consumption of storage and processing resources.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: September 14, 2021
    Assignee: Commvault Systems, Inc.
    Inventors: Brahmaiah Vallabhaneni, Paramasivam Kumarasamy, Rahul S. Pawar, Henry Wallace Dornemann, Jun H. Ahn, Muthusamy Senthilnathan
  • Patent number: 11113154
    Abstract: Systems and methods are disclosed for cross-system user-level management of data objects stored in one or more information management systems, and for user-level management of data storage quotas in information management systems, including data objects in secondary storage. An illustrative quota manager is associated with one or more information management systems. The quota manager comprises a quota value representing the maximum amount of data storage allowed for a given end-user's primary and secondary data in the one or more information management systems. The quota manager determines whether data associated with the end-user has exceeded the storage quota, and if so, prompts the end-user to select data for deletion, the deletion to be implemented globally, across the primary and secondary storage subsystems of the respective one or more information management systems. Meanwhile, so long as the quota is exceeded, the quota manager instructs storage managers to block backups of end-user's data.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: September 7, 2021
    Assignee: Commvault Systems, Inc.
    Inventors: Manas Bhikchand Mutha, Pavan Kumar Reddy Bedadala, Jun H. Ahn, Pavlo Mazur, Jatin Kirtikumar Sanghvi
  • Publication number: 20210271553
    Abstract: A system according to certain aspects improves the process of creating secondary copies of data (e.g., creating backup copies). The system can compute the score of the data (e.g., a computer file storing information) to be backed up, and determine whether the score satisfies one or more threshold criteria before backing up the data. In one example, a change in score indicates a change in the content of the data. The threshold criteria may be that the score be different from the score of the most recently backed up copy of the data.
    Type: Application
    Filed: March 11, 2021
    Publication date: September 2, 2021
    Inventors: Manas Bhikchand MUTHA, Amit MAHAJAN, Yan LIU, Jun H. AHN
  • Patent number: 11108858
    Abstract: Systems and methods for providing data storage operations, such as archiving and/or backing up of data, for mail servers, such as Exchange servers, via a Simple Mail Transfer Protocol (SMTP) interface are described. For example, the systems and methods may provide an SMTP server between one or more Exchange servers and a media agent, which is configured to performing secondary copy operations, in order to quickly and/or efficiently generate archive or other secondary copies of various mailboxes within the mail server before or during the transfer of mail data to the media agent for data storage operations.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: August 31, 2021
    Assignee: Commvault Systems, Inc.
    Inventors: Sunghyun Wang, Manas Bhikchand Mutha, Jun H. Ahn
  • Publication number: 20210255935
    Abstract: A system according to certain aspects may include a client computing device including: a database application configured to output a database file in a primary storage device(s), the database application outputting the database file as a series of application-level blocks; and a data agent configured to divide the database file into a plurality of first blocks having a first granularity larger than a second granularity of the application-level blocks such that each of the first blocks spans a plurality of the application-level blocks. The system may include a secondary storage controller computer(s) configured to: in response to instructions to create a secondary copy of the database file: copy the plurality of first blocks to a secondary storage device(s) to create a secondary copy of the database file; and create a table that provides a mapping between the copied plurality of first blocks and corresponding locations on the secondary storage device(s).
    Type: Application
    Filed: March 3, 2021
    Publication date: August 19, 2021
    Inventors: Henry Wallace DORNEMANN, Rahul S. PAWAR, Jun H. AHN
  • Patent number: 11082489
    Abstract: A method and system for identifying changes to a data set, such as data within a mailbox, and performing actions based on the identified changes is discussed. In some examples, the system receives an indication of a change to a mailbox, creates a change journal entry for the change, and identifies data to be copied via the change journal entry. In some examples, the system leverages the change journal to associate messages with changes to a mailbox.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: August 3, 2021
    Assignee: Commvault Systems, Inc.
    Inventors: Jun H. Ahn, David Ngo
  • Patent number: 11074138
    Abstract: Systems and methods for performing backup operations and other secondary copy operations for mail servers, such as Exchange servers, are described. In some cases, the systems and methods perform multi-streaming backup and other copy operations using a single mailbox agent, which launches backup streams via a coordinator that determines when to launch streams, at what mailboxes (or folders) to launch the streams, and so on. The coordinator communicates with controllers at different machines (e.g., servers) to be backed up, and may assign streams, mailboxes, and so on, to the different controllers, which perform the backup operations for their assigned mailboxes and/or clients.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: July 27, 2021
    Assignee: Commvault Systems, Inc.
    Inventors: Christopher A. Alonzo, Jun H. Ahn, Manas Bhikchand Mutha, Vipul Pawale
  • Patent number: 11074140
    Abstract: Systems and methods for providing and/or facilitating live browsing of granular mail or mailbox data, such as data stored within Exchange mailboxes, are described. For example, the systems and methods may provide mechanisms for browsing and/or restoring granular data (e.g., email data) from an Exchange database backup copy (or other secondary copy), without having to restore the entire database from the backup copy.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: July 27, 2021
    Assignee: Commvault Systems, Inc.
    Inventors: Yan Liu, Jun H. Ahn, Manas Bhikchand Mutha, Priya Sundaresan
  • Patent number: 11042449
    Abstract: A system according to certain aspects may include a client computing device including: a database application configured to output a database file in a primary storage device(s), the database application outputting the database file as a series of application-level blocks; and a data agent configured to divide the database file into a plurality of first blocks having a first granularity larger than a second granularity of the application-level blocks such that each of the first blocks spans a plurality of the application-level blocks. The system may include a secondary storage controller computer(s) configured to: in response to instructions to create a secondary copy of the database file: copy the plurality of first blocks to a secondary storage device(s) to create a secondary copy of the database file; and create a table that provides a mapping between the copied plurality of first blocks and corresponding locations on the secondary storage device(s).
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: June 22, 2021
    Assignee: Commvault Systems, Inc.
    Inventors: Henry Wallace Dornemann, Rahul S. Pawar, Jun H. Ahn
  • Patent number: 11030058
    Abstract: According to certain aspects, a system may include a data agent configured to: process a database file residing on a primary storage device(s) to identify a subset of data in the database file for archiving, the database file generated by a database application; and extract the subset of the data from the database file and store the subset of the data in an archive file on the primary storage device(s) as a plurality of blocks having a common size; and at least one secondary storage controller computer configured to, as part of a secondary copy operation in which the archive file is copied to a secondary storage device(s): copy the plurality of blocks to the secondary storage devices to create a secondary copy of the archive file; and create a table that provides a mapping between the copied plurality of blocks and corresponding locations in the secondary storage device(s).
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: June 8, 2021
    Assignee: Commvault Systems, Inc.
    Inventors: Paramasivam Kumarasamy, Brahmaiah Vallabhaneni, Rahul S. Pawar, Henry Wallace Dornemann, Jun H. Ahn, Amey Vijaykumar Karandikar, Amit Mitkar, Muthusamy Senthilnathan, Satish Chandra Kilaru
  • Publication number: 20210165719
    Abstract: According to certain aspects, a system may include a computing device configured to: intercept a request from a database application to read a portion of a database file, where a secondary copy of the database file resides on a secondary storage device(s) and is organized as a plurality of first blocks, wherein the request includes a database file offset(s) corresponding to the requested portion; and map the database file offset(s) to a subset of the first blocks that correspond to requested database object(s). The system may include a secondary storage controller computer(s) configured to: access a table that maps the plurality of first blocks to storage locations on the secondary storage device(s); using the table, locate and retrieve the subset of the first blocks on the secondary storage device(s); and forward the retrieved first blocks for storage in a primary storage device(s).
    Type: Application
    Filed: December 1, 2020
    Publication date: June 3, 2021
    Inventors: Paramasivam KUMARASAMY, Rahul S. PAWAR, Henry Wallace DORNEMANN, Jun H. AHN, Brahmaiah VALLABHANENI, Girish RAMOHALLI GOPALA RAO
  • Patent number: 10983863
    Abstract: A system according to certain aspects improves the process of creating secondary copies of data (e.g., creating backup copies). The system can compute the score of the data (e.g., a computer file storing information) to be backed up, and determine whether the score satisfies one or more threshold criteria before backing up the data. In one example, a change in score indicates a change in the content of the data. The threshold criteria may be that the score be different from the score of the most recently backed up copy of the data.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: April 20, 2021
    Assignee: Commvault Systems, Inc.
    Inventors: Manas Bhikchand Mutha, Amit Mahajan, Yan Liu, Jun H. Ahn
  • Publication number: 20210056002
    Abstract: Systems and method that restore application data stored by a virtual machine database for an application (e.g., SQL, SharePoint, Exchange, and so on) running on the virtual machine are described. The systems and methods create an integrated snapshot of the application data stored in the virtual machine database, by creating a secondary copy of the application data stored in the virtual machine database, performing, via a virtual server agent (VSA), a software snapshot of the virtual machine, and performing, via the virtual server agent, a hardware snapshot of the software snapshot of the virtual machine.
    Type: Application
    Filed: October 26, 2020
    Publication date: February 25, 2021
    Inventors: Waqas ASHRAF, Sudha Krishnan IYER, Jun H. AHN, Rahul S. PAWAR