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).

  • Patent number: 11516289
    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: July 2, 2021
    Date of Patent: November 29, 2022
    Assignee: Commvault Systems, Inc.
    Inventors: Jun H. Ahn, David Ngo
  • Patent number: 11494273
    Abstract: The present inventors devised a holistic approach for protecting serverless applications in single-cloud, multi-zone, multi-cloud, and/or non-cloud data center computing environments. An illustrative data storage management system discovers application assets, relationships, and interoperability dependencies and creates an “application entity” that references the various assets. Protection preferences apply to the application entity as a whole. An orchestration function in the system coordinates storage management operations (e.g., backup, replication, live synchronization, etc.) in a suitable order of operations gleaned from asset dependencies, if any. A set of copies of the application's discovered assets are generated in coordinated fashion and represent a point-in-time copy of the application. The point-in-time copy can be restored and/or migrated to other computing services by the data storage management system.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: November 8, 2022
    Assignee: Commvault Systems, Inc.
    Inventors: Ketan Bansod, Jun H. Ahn, Girish Ramohalli Gopala Rao
  • Publication number: 20220342772
    Abstract: The present inventors devised a holistic approach for protecting serverless applications in single-cloud, multi-zone, multi-cloud, and/or non-cloud data center computing environments. An illustrative data storage management system discovers application assets, relationships, and interoperability dependencies and creates an “application entity” that references the various assets. Protection preferences apply to the application entity as a whole. An orchestration function in the system coordinates storage management operations (e.g., backup, replication, live synchronization, etc.) in a suitable order of operations gleaned from asset dependencies, if any. A set of copies of the application's discovered assets are generated in coordinated fashion and represent a point-in-time copy of the application. The point-in-time copy can be restored and/or migrated to other computing services by the data storage management system.
    Type: Application
    Filed: May 10, 2022
    Publication date: October 27, 2022
    Inventors: Ketan Bansod, Jun H. Ahn, Girish Ramohalli Gopala Rao
  • Patent number: 11436096
    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: Grant
    Filed: December 1, 2020
    Date of Patent: September 6, 2022
    Assignee: Commvault Systems, Inc.
    Inventors: Paramasivam Kumarasamy, Rahul S. Pawar, Henry Wallace Dornemann, Jun H. Ahn, Brahmaiah Vallabhaneni, Girish Ramohalli Gopala Rao
  • Publication number: 20220276986
    Abstract: A system for performing continuous transaction log backups with minimal resource usage of the client computing devices that are processing the transactions is disclosed. The system detects at least one input/output (I/O) activity at a client computing device. The I/O activity can be associated with at least one database operation performed via the client computing device. The system then executes one or more native commands to backup transactions log data associated with the detected I/O activity to a virtualized location. Backing-up the transactions log data comprises dynamically identifying a mount path location corresponding to the virtualized location, and transferring the transactions log data to the dynamically identified mount path using the one or more native commands. The system can then perform data processing operations (for example, data chunking and deduplicating) on the transactions log data after it is received at the dynamically identified mount path location.
    Type: Application
    Filed: March 15, 2022
    Publication date: September 1, 2022
    Inventors: Jun H. Ahn, Prasad Nara, Sri Karthik Bhagi
  • Publication number: 20220197865
    Abstract: A system for providing user access to electronic mail includes an email client and an email server. The email client receives and communicates a user interaction with an email message The email server that receives the communication, determines whether the email message stored in a live database or in a backup storage. Upon determination that the email message is stored in a backup storage, the email server performs a message exchange with a backup storage system to perform the user-requested action.
    Type: Application
    Filed: March 14, 2022
    Publication date: June 23, 2022
    Inventors: Arun Prasad Amarendran, Jun H. Ahn, Tirthankar Chatterjee, Manas Bhikchand Mutha, Ho-Chi Chen, Prosenjit Sinha, Yongtao Liu
  • Patent number: 11366723
    Abstract: The present inventors devised a holistic approach for protecting serverless applications in single-cloud, multi-zone, multi-cloud, and/or non-cloud data center computing environments. An illustrative data storage management system discovers application assets, relationships, and interoperability dependencies and creates an “application entity” that references the various assets. Protection preferences apply to the application entity as a whole. An orchestration function in the system coordinates storage management operations (e.g., backup, replication, live synchronization, etc.) in a suitable order of operations gleaned from asset dependencies, if any. A set of copies of the application's discovered assets are generated in coordinated fashion and represent a point-in-time copy of the application. The point-in-time copy can be restored and/or migrated to other computing services by the data storage management system.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: June 21, 2022
    Assignee: Commvault Systems, Inc.
    Inventors: Ketan Bansod, Jun H. Ahn, Girish Ramohalli Gopala Rao
  • Publication number: 20220179758
    Abstract: An information management system allows a user to search through a secondary copy of data, such as a backup, archive, or snapshot without first retrieving the secondary copy of data. Instead, the system constructs lightweight data that can be displayed to a user as a representation of the search results. Lightweight data may include metadata or other information that identifies data included in the secondary copy of data. The lightweight data may be perceived as being the secondary copy of data and allow a user to browse through search results. Once the user identifies a search result that is of interest, information in the lightweight data can be used to retrieve the secondary copy of data. Because lightweight data may have a smaller file size than the file size of the secondary copy of data, the latency of performing a search may be reduced.
    Type: Application
    Filed: February 24, 2022
    Publication date: June 9, 2022
    Inventors: Jun H. Ahn, Manas Bhikchand Mutha, Chitra Ramaswamy
  • Patent number: 11321191
    Abstract: A information management system allows a user to search through a secondary copy of data, such as a back up, archive, or snapshot without first retrieving the secondary copy of data. Instead, the system constructs lightweight data that can be displayed to a user as a representation of the search results. Lightweight data may include metadata or other information that identifies data included in the secondary copy of data. The lightweight data may be perceived as being the secondary copy of data and allow a user to browse through search results. Once the user identifies a search result that is of interest, information in the lightweight data can be used to retrieve the secondary copy of data. Because lightweight data may have a smaller file size than the file size of the secondary copy of data, the latency of performing a search may be reduced.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: May 3, 2022
    Assignee: Commvault Systems, Inc.
    Inventors: Jun H. Ahn, Manas Bhikchand Mutha, Chitra Ramaswamy
  • Patent number: 11308034
    Abstract: A system for performing continuous transaction log backups with minimal resource usage of the client computing devices that are processing the transactions is disclosed. The system detects at least one input/output (I/O) activity at a client computing device. The I/O activity can be associated with at least one database operation performed via the client computing device. The system then executes one or more native commands to backup transactions log data associated with the detected I/O activity to a virtualized location. Backing-up the transactions log data comprises dynamically identifying a mount path location corresponding to the virtualized location, and transferring the transactions log data to the dynamically identified mount path using the one or more native commands. The system can then perform data processing operations (for example, data chunking and deduplicating) on the transactions log data after it is received at the dynamically identified mount path location.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: April 19, 2022
    Assignee: Commvault Systems, Inc.
    Inventors: Jun H. Ahn, Prasad Nara, Sri Karthik Bhagi
  • Publication number: 20220113873
    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: Application
    Filed: August 23, 2021
    Publication date: April 14, 2022
    Inventors: Duncan Alden LITTLEFIELD, Rajiv KOTTOMTHARAYIL, Kuldeep KUMAR, Sri Karthik BHAGI, Jun H. AHN, Parag GOKHALE
  • Patent number: 11287980
    Abstract: Systems and methods for storage pruning can enable users to delete, edit, or copy backed up data that matches a pattern. Storage pruning can enable fine-grain deletion or copying of files from backups stored in secondary storage devices. Systems and methods can also enable editing of metadata associated with backups so that when the backups are restored or browsed, the logical edits to the metadata can then be performed physically on the data to create a custom restore or a custom view. A user may perform operations such as renaming, deleting, modifying flags, and modifying retention policies on backed up items. Although the underlying data in the backup may not change, the view of the backup data when the user browses the backup data can appear to include the user's changes. A restore of the data can cause those changes to be performed on the backup data.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: March 29, 2022
    Assignee: Commvault Systems, Inc.
    Inventors: Manas Bhikchand Mutha, Jun H. Ahn
  • Publication number: 20220058090
    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: Application
    Filed: September 9, 2021
    Publication date: February 24, 2022
    Inventors: Jun H. AHN, Waqas ASHRAF, Anup KUMAR, Brahmaiah VALLABHANENI
  • Publication number: 20220038408
    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: Application
    Filed: July 2, 2021
    Publication date: February 3, 2022
    Inventors: Jun H. AHN, David NGO
  • Publication number: 20220027240
    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: Application
    Filed: August 2, 2021
    Publication date: January 27, 2022
    Inventors: Manas Bhikchand Mutha, Pavan Kumar Reddy Bedadala, Jun H. Ahn, Pavlo Mazur, Jatin Kirtikumar Sanghvi
  • Publication number: 20220021733
    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: Application
    Filed: July 27, 2021
    Publication date: January 20, 2022
    Inventors: Sunghyun Wang, Jun H. Ahn, Manas Bhikchand Mutha
  • Publication number: 20220012136
    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: Application
    Filed: June 21, 2021
    Publication date: January 13, 2022
    Inventors: Yan LIU, Jun H. Ahn, Manas Bhikchand Mutha, Priya Sundaresan
  • 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