Patents by Inventor Mike Xiaoliang Zhu

Mike Xiaoliang Zhu 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: 11687505
    Abstract: A current retention mode is identified as being one of conservative or aggressive. When the retention mode is identified as aggressive, a check is made as to whether used space on backup storage is below a lower threshold. If the used space is below the lower threshold, a switch is made into the conservative mode. If the used space is above the lower threshold, the aggressive mode is maintained. While in the aggressive mode, a backup chain of a database is selected for pruning, the selected backup chain having a shortest retention term of all backup chains not yet pruned and not being a latest backup chain. Log backups of the database in the selected backup chain are identified. Each log backup that has expired is deleted regardless of dependency of other backups on an expired log backup.
    Type: Grant
    Filed: April 21, 2021
    Date of Patent: June 27, 2023
    Assignee: EMC IP Holding Company LLC
    Inventors: Mengze Liao, Scott Quesnelle, Yasemin Ugur-Ozekinci, Jin Ru Yan, Mike Xiaoliang Zhu
  • Publication number: 20220342858
    Abstract: A current retention mode is identified as being one of conservative or aggressive. When the retention mode is identified as aggressive, a check is made as to whether used space on backup storage is below a lower threshold. If the used space is below the lower threshold, a switch is made into the conservative mode. If the used space is above the lower threshold, the aggressive mode is maintained. While in the aggressive mode, a backup chain of a database is selected for pruning, the selected backup chain having a shortest retention term of all backup chains not yet pruned and not being a latest backup chain. Log backups of the database in the selected backup chain are identified. Each log backup that has expired is deleted regardless of dependency of other backups on an expired log backup.
    Type: Application
    Filed: April 21, 2021
    Publication date: October 27, 2022
    Inventors: Mengze Liao, Scott Quesnelle, Yasemin Ugur-Ozekinci, Jin Ru Yan, Mike Xiaoliang Zhu
  • Patent number: 11321120
    Abstract: Embodiments of the present disclosure provide a data backup method, an electronic device and a computer program product. The method provided includes creating a workflow related to a data source, the workflow being configured to generate a copy of the data source or to replicate the copy of the data source to a remote device. The method further includes identifying a dependency of the workflow, the dependency indicating whether the workflow depends on at least one additional workflow related to the data source. The method further includes scheduling the workflow based at least on the identified dependency. According to the embodiments of the present disclosure, by use of a dependency-based scheduling mechanism, the performance of a storage system can be improved, and consumption of resources such as a storage and an internal memory can be reduced.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: May 3, 2022
    Assignee: EMC IP HOLDING COMPANY LLC
    Inventors: Yongsheng Guo, Mike Xiaoliang Zhu, Jing Yu, Crystal Jingjing Guo, Roger Zhihong Zeng
  • Publication number: 20210303339
    Abstract: Embodiments of the present disclosure provide a data backup method, an electronic device and a computer program product. The method provided includes creating a workflow related to a data source, the workflow being configured to generate a copy of the data source or to replicate the copy of the data source to a remote device. The method further includes identifying a dependency of the workflow, the dependency indicating whether the workflow depends on at least one additional workflow related to the data source. The method further includes scheduling the workflow based at least on the identified dependency. According to the embodiments of the present disclosure, by use of a dependency-based scheduling mechanism, the performance of a storage system can be improved, and consumption of resources such as a storage and an internal memory can be reduced.
    Type: Application
    Filed: May 13, 2020
    Publication date: September 30, 2021
    Inventors: Yongsheng Guo, Mike Xiaoliang Zhu, Jing Yu, Crystal Jingjing Guo, Roger Zhihong Zeng