An Endurance-Aware Metadata Allocation Strategy for MLC NAND Flash Memory Storage Systems

被引：21

作者：

Huang, Min ^{[1
]}

Liu, Zhaoqing ^{[1
]}

Qiao, Liyan ^{[1
]}

Wang, Yi ^{[2
]}

Shao, Zili ^{[3
]}

机构：

[1] Harbin Inst Technol, Sch Elect Engn & Automat, Harbin 150001, Peoples R China

[2] Shenzhen Univ, Guangdong Prov Key Lab Popular High Performance C, Shenzhen 518060, Peoples R China

[3] Hong Kong Polytech Univ, Dept Comp, Hong Kong, Hong Kong, Peoples R China

来源：

IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS | 2016年 / 35卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Metadata; multiple-level cell (MLC); NAND flash memory; reliability; shared page;

D O I：

10.1109/TCAD.2015.2474394

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents a reliability-aware metadata allocation strategy called scatter-single-level cell (SLC) for multiple-level cell (MLC) NAND flash memory storage systems. In scatter-SLC, metadata is kept in least significant bit (LSB) pages and corresponding most significant bit (MSB) pages are bypassed. Without partitioning SLC and MLC blocks, scatter-SLC can eliminate the unbalanced lifetime between SLC and MLC blocks while achieving the similar error rate as the method to store metadata in SLC blocks. We implemented scatter-SLC on a real-hardware platform. The experiment results show that scatter-SLC can reduce uncorrectable page errors by 93.54% while incurring less than 1% time overhead on average compared with the previous work.

引用

页码：691 / 694

页数：4

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