Patents by Inventor Charles Chun Ma

Charles Chun Ma 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, apparatus and computer program product for managing data storage in data storage systems
    Patent number: 10776205
    Abstract: Techniques are disclosed for managing data storage. In one embodiment, the techniques determine one or more RAID extents having a disk extent supported by an extent of storage on a storage device in an inoperative state. Each of the RAID extents contains a respective set of disk extents allocated to that RAID extent and each disk extent is supported by an extent of storage on a storage device of the set of storage devices. The techniques also comprise evaluating a set of values, wherein each value indicates, for a corresponding pair of storage devices from the set of storage devices, a number of RAID extents which contain disk extents belonging to both storage devices of the pair.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: September 15, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Wayne Weihua Li, Jian Gao, Jamin Kang, Sheng Wang, Charles Chun Ma
  • METHOD, APPARATUS AND COMPUTER PROGRAM PRODUCT FOR MANAGING DATA STORAGE IN DATA STORAGE SYSTEMS
    Publication number: 20190235957
    Abstract: Techniques are disclosed for managing data storage. In one embodiment, the techniques determine one or more RAID extents having a disk extent supported by an extent of storage on a storage device in an inoperative state. Each of the RAID extents contains a respective set of disk extents allocated to that RAID extent and each disk extent is supported by an extent of storage on a storage device of the set of storage devices. The techniques also comprise evaluating a set of values, wherein each value indicates, for a corresponding pair of storage devices from the set of storage devices, a number of RAID extents which contain disk extents belonging to both storage devices of the pair.
    Type: Application
    Filed: April 30, 2018
    Publication date: August 1, 2019
    Inventors: Wayne Weihua Li, Jian Gao, Jamin Kang, Sheng Wang, Charles Chun Ma