Patents by Inventor Shaocong Liang

Shaocong Liang 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).

  • Method, device and computer program product for task management
    Patent number: 11294712
    Abstract: Task management techniques, in a storage system, involve: dividing a task to be processed into a plurality of child tasks, so that a processing time required by each of the plurality of child tasks is same, the number of the plurality of child tasks being a first number; dividing a progress to be reported and being associated with the processing of the task into a plurality of child progresses, the number of the plurality of the child progresses being a second number, the second number being less than the first number, and each of the plurality of child progresses having a same value; and associating, based on the first and the second number, and according to a predetermined mapping between the plurality of child progresses and the plurality of child tasks, each of the plurality of child progresses with a respective child task of the plurality of child tasks.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: April 5, 2022
    Assignee: EMC IP Holding Company LLC
    Inventors: Binbin Deng, Tianfang Xiong, Mancheng Xiong, Shaocong Liang, Zhipeng Zhang
  • Methods and devices for multi-level data protection in a storage system
    Patent number: 10860445
    Abstract: A method and apparatus for multi-level data protection in a storage system. The storage system comprises a first storage device, a second storage device, and a third storage device, the method comprising: establishing a synchronous replication session between the first storage device and the second storage device so as to synchronously replicate data in the first storage device to the second storage device; establishing an asynchronous replication session between the first storage device and the third storage device so as to asynchronously replicate the data in the first storage device to the third storage device; and recovering the asynchronous replication by establishing an asynchronous replication session between the second storage device and the third storage device in response to a failure of the first storage device.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: December 8, 2020
    Assignee: EMC IP Holding Company, LLC
    Inventors: Yuan Luo, Ning Xu, Maxim Sichao Ma, Qiu Shang, Shaocong Liang
  • METHOD, DEVICE AND COMPUTER PROGRAM PRODUCT FOR TASK MANAGEMENT
    Publication number: 20190384631
    Abstract: Task management techniques, in a storage system, involve: dividing a task to be processed into a plurality of child tasks, so that a processing time required by each of the plurality of child tasks is same, the number of the plurality of child tasks being a first number; dividing a progress to be reported and being associated with the processing of the task into a plurality of child progresses, the number of the plurality of the child progresses being a second number, the second number being less than the first number, and each of the plurality of child progresses having a same value; and associating, based on the first and the second number, and according to a predetermined mapping between the plurality of child progresses and the plurality of child tasks, each of the plurality of child progresses with a respective child task of the plurality of child tasks.
    Type: Application
    Filed: April 11, 2019
    Publication date: December 19, 2019
    Inventors: Binbin Deng, Tianfang Xiong, Mancheng Xiong, Shaocong Liang, Zhipeng Zhang
  • METHODS AND DEVICES FOR MULTI-LEVEL DATA PROTECTION IN A STORAGE SYSTEM
    Publication number: 20190303256
    Abstract: A method and apparatus for multi-level data protection in a storage system. The storage system comprises a first storage device, a second storage device, and a third storage device, the method comprising: establishing a synchronous replication session between the first storage device and the second storage device so as to synchronously replicate data in the first storage device to the second storage device; establishing an asynchronous replication session between the first storage device and the third storage device so as to asynchronously replicate the data in the first storage device to the third storage device; and recovering the asynchronous replication by establishing an asynchronous replication session between the second storage device and the third storage device in response to a failure of the first storage device.
    Type: Application
    Filed: June 17, 2019
    Publication date: October 3, 2019
    Inventors: Yuan Luo, Ning Xu, Maxim Sichao Ma, Qiu Shang, Shaocong Liang
  • Methods and devices for multi-level data protection in a storage system
    Patent number: 10324813
    Abstract: A method and apparatus for multi-level data protection in a storage system. The storage system comprises a first storage device, a second storage device, and a third storage device, the method comprising: establishing a synchronous replication session between the first storage device and the second storage device so as to synchronously replicate data in the first storage device to the second storage device; establishing an asynchronous replication session between the first storage device and the third storage device so as to asynchronously replicate the data in the first storage device to the third storage device; and recovering the asynchronous replication by establishing an asynchronous replication session between the second storage device and the third storage device in response to a failure of the first storage device.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: June 18, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Yuan Luo, Ning Xu, Maxim Sichao Ma, Qiu Shang, Shaocong Liang
  • METHODS AND DEVICES FOR MULTI-LEVEL DATA PROTECTION IN A STORAGE SYSTEM
    Publication number: 20170185497
    Abstract: A method and apparatus for multi-level data protection in a storage system. The storage system comprises a first storage device, a second storage device, and a third storage device, the method comprising: establishing a synchronous replication session between the first storage device and the second storage device so as to synchronously replicate data in the first storage device to the second storage device; establishing an asynchronous replication session between the first storage device and the third storage device so as to asynchronously replicate the data in the first storage device to the third storage device; and recovering the asynchronous replication by establishing an asynchronous replication session between the second storage device and the third storage device in response to a failure of the first storage device.
    Type: Application
    Filed: December 19, 2016
    Publication date: June 29, 2017
    Inventors: Yuan Luo, Ning Xu, Maxim Sichao Ma, Qiu Shang, Shaocong Liang