Title:
SSD FINITE WINDOW DATA DEDUPLICATION IDENTIFICATION METHOD AND APPARATUS, AND COMPUTER DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/245942
Kind Code:
A1
Abstract:
An SSD finite window data deduplication identification method and apparatus, a computer device, and a storage medium. The method comprises: if a command is a write command, allocating a write buffer area and receiving data from a host, dividing the write command according to data segments, and calculating a data abstract for each data segment; determining whether the data abstract for each data segment of the write command is consistent with the data abstract in a read data deduplication window; if yes, further determining whether the data content of each data segment of the write command is consistent with the data content in the read data deduplication window; and if yes, sending a corresponding read data segment logical address and a write data segment logical address to a write deduplication application module, so that the write deduplication application module replaces the manner of writing write data to NAND with a mapping table copying manner. The present application can reduce data writing, improve the SSD reliability, and greatly improve the performance of on-disk data copying.
Inventors:
WANG MENG (CN)
XU WEIHUA (CN)
HAN DAOJING (CN)
XU WEIHUA (CN)
HAN DAOJING (CN)
Application Number:
PCT/CN2022/127731
Publication Date:
December 28, 2023
Filing Date:
October 26, 2022
Export Citation:
Assignee:
SUZHOU UNIONMEMORY INFORMATION SYSTEM LTD (CN)
International Classes:
G11C16/04; G11C16/14
Foreign References:
| CN114974365A | 2022-08-30 | |||
| CN103150258A | 2013-06-12 | |||
| CN106557571A | 2017-04-05 | |||
| US20190129639A1 | 2019-05-02 | |||
| CN107193686A | 2017-09-22 | |||
| CN109271097A | 2019-01-25 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYI UNION INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
Download PDF: