Next Article in Journal
Novel Fractional Operators with Three Orders and Power-Law, Exponential Decay and Mittag–Leffler Memories Involving the Truncated M-Derivative
Next Article in Special Issue
Relaxation of the Radio-Frequency Linewidth for Coherent-Optical Orthogonal Frequency-Division Multiplexing Schemes by Employing the Improved Extreme Learning Machine
Previous Article in Journal
Investigation of Heavy-Ion Induced Single-Event Transient in 28 nm Bulk Inverter Chain
Previous Article in Special Issue
The Analysis of Electronic Circuit Fault Diagnosis Based on Neural Network Data Fusion Algorithm
Open AccessFeature PaperArticle

ZDC: A Zone Data Compression Method for Solid State Drive Based Flash Memory

School of Computer Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China
Author to whom correspondence should be addressed.
Symmetry 2020, 12(4), 623;
Received: 18 March 2020 / Revised: 26 March 2020 / Accepted: 26 March 2020 / Published: 15 April 2020
(This article belongs to the Special Issue Information Technologies and Electronics)
Solid-state drive (SSD) with flash memory as the storage medium are being widely used in various data storage systems. SSD data compression means that data is compressed before it is written to Not-And (NAND) Flash. Data compression can reduce the amount of data written in NAND Flash and improve the performance and reliability of SSDs. At present, the main problem facing data compression of SSD is how to improve the efficiency of data compression and decompression. In order to improve the performance of data compression and decompression, this study proposes a method of SSD data deduplication based on zone division. First, this study divides the storage space of the SSD into zones and divides them into one hot zone and multiple cold zones according to the different erasing frequency. Second, the data in each zone is divided into hot data and cold data according to the number of erasures. At the same time, the address mapping table in the hot zone is loaded into the cache. Finally, when there is a write or read request, the SSD will selectively compress or decompress the data according to the type of different zones. Through simulation tests, the correctness and effectiveness of this study are verified. The research results show that the data compression rate of this research result can reach 70–95%. Compared with SSD without data compression, write amplification is reduced by 5 to 30%, and write latency is reduced by 5 to 25%. The research results have certain reference value for improving the performance and reliability of SSD. View Full-Text
Keywords: flash memory; SSD; data compression; zone flash memory; SSD; data compression; zone
Show Figures

Graphical abstract

MDPI and ACS Style

Ye, X.; Zhai, Z.; Li, X. ZDC: A Zone Data Compression Method for Solid State Drive Based Flash Memory. Symmetry 2020, 12, 623.

AMA Style

Ye X, Zhai Z, Li X. ZDC: A Zone Data Compression Method for Solid State Drive Based Flash Memory. Symmetry. 2020; 12(4):623.

Chicago/Turabian Style

Ye, Xin; Zhai, Zhengjun; Li, Xiaochang. 2020. "ZDC: A Zone Data Compression Method for Solid State Drive Based Flash Memory" Symmetry 12, no. 4: 623.

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Search more from Scilit
Back to TopTop