基于嵌入式系统ATA-RAID实现方案  

Method of Implementation of ATA-RAID Based on Embedded System

作　　者：罗迅[1] 徐海峥[1] 裴京[1] 李达成[1] 

机构地区：[1]清华大学精密仪器系光盘国家工程研究中心,北京100084

出　　处：《电子器件》2006年第3期913-916,共4页Chinese Journal of Electron Devices

基　　金：国家重点基础研究(973)超高密度超快速光信息存储与处理的基础研究资助(G1999033007)

摘　　要：ATA总线结构简单、容易操作,其设备是目前存储市场的主流产品。然而ATA接口不易扩展的特性制约了其在集成存储中的应用。基于嵌入式系统,提出了一种ATA-RAID的实现方案。方案以ARM芯片为中央控制单元,以FPGA芯片控制底层数据逻辑。系统向外提供一个标准ATA端口,和普通ATA设备功能完全一样。实验表明,本方案有效的集成了ATA设备,扩展了ATA存储容量。ATA bus has characteristics of simple architecture and feasible manipulation, its devices are the dominating storage products in the computer market at present. However, ATA protocol is hard to expand and short of intelligence, which severely restricts the application of ATA devices in the mass integrated storage. A method was proposed to implement ATA-RAID based on embedded system. The design used ARM chip as the central processing unit, used FPGA chip to control bottom data logic. The I/O sub-system was provided with a standard ATA interface to the hosts and acted as a normal ATA device. The experimental results proved that our method was successful to integrate ATA devices and expand ATA storage capacity.

关 键 词：嵌入式系统 ATA协议 RAID 

分 类 号：TP336[自动化与计算机技术—计算机系统结构]