基于SOPC的固态存储硬盘的设计与实现  

Design and implementation of solid state drive based on SOPC

作　　者：王江峰[1,2] 苏建[2] 

机构地区：[1]中国科学院研究生院,北京100049 [2]中国科学院光电研究院,北京100190

出　　处：《计算机工程与设计》2010年第24期5200-5203,5223,共5页Computer Engineering and Design

摘　　要：设计并实现了一种基于SOPC技术的高性能固态存储硬盘,从存储层次的角度研究了固态存储硬盘的原理,分析了NAND Flash存储芯片和计算机存储系统的工作特性,总结了一般Flash存储管理算法在改善系统性能和使用寿命等方面所面临的主要问题,并相应的从地址空间映射、平衡损耗、垃圾回收效率3个方面对算法进行了优化设计。最后,通过在FPGA上构建嵌入式系统平台实现了固态存储硬盘的功能,实验结果表明该算法达到了较高的性能指标。A method of implementing SSD（solid state disk） based on SOPC is introduced.Through the study of the principle of SSD from the storage level aspect and the analysis of the features of NAND flash memory and computer storage system,the problems which the storage management scheme need to solve are pointed out to improve the performance and the life expectancy.Then,the corresponding ways are proposed to optimize the address mapping,wear leveling and garbage collection.Finally,the SSD is implemented on embedded system built in FPGA to test the scheme and a good system performance is achieved.

关 键 词：可编程片上系统 NAND闪存 硬盘 固态存储 ATA协议 

分 类 号：TP334.5[自动化与计算机技术—计算机系统结构]