Patents by Inventor Xiaoan YU

Xiaoan YU 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 for deduplication in storage system, storage system, and controller
    Patent number: 10216446
    Abstract: A solution to deduplication in a storage system is disclosed herein. In this solution, a controller stores, at a first storage address, a data block that is written for the first time, and inserts, in a fingerprint table, a first fingerprint of first data that is written for the first time, but does not establish a mapping relationship between the first fingerprint and the first storage address. When receiving subsequently written second data to be written, the controller allocates a second storage address to the duplicate second data, stores the second data at the second storage address, and establishes a mapping relationship between the first fingerprint and the second storage address in the fingerprint table. This reduces an amount of data in the fingerprint table.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: February 26, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Wenhai Lan, Wei Zhang, Xiaoan Yu, Xuyou Liu, Zhixiong Zhang
  • METHOD FOR DEDUPLICATION IN STORAGE SYSTEM, STORAGE SYSTEM, AND CONTROLLER
    Publication number: 20180239553
    Abstract: A solution to deduplication in a storage system is disclosed herein. In this solution, a controller stores, at a first storage address, a data block that is written for the first time, and inserts, in a fingerprint table, a first fingerprint of first data that is written for the first time, but does not establish a mapping relationship between the first fingerprint and the first storage address. When receiving subsequently written second data to be written, the controller allocates a second storage address to the duplicate second data, stores the second data at the second storage address, and establishes a mapping relationship between the first fingerprint and the second storage address in the fingerprint table. This reduces an amount of data in the fingerprint table.
    Type: Application
    Filed: April 23, 2018
    Publication date: August 23, 2018
    Inventors: Wenhai LAN, Wei ZHANG, Xiaoan YU, Xuyou LIU, Zhixiong ZHANG