基于FPGA的对象存储控制器的关键技术  

Key technology for object-based storage controllers using SOPC

作　　者：冯丹[1] 刘勋[1] 李开君[1] 

机构地区：[1]华中科技大学信息存储系统教育部重点实验室,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2007年第6期50-53,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家重点基础研究发展计划资助项目(2004CB318201)

摘　　要：研究了对象存储控制器的关键技术.基于交换式片内总线,使用NiosⅡ处理器,设计了高速对象存储控制器;基于可编程片上系统技术,用硬件描述语言实现光纤通道底层协议;基于实时操作系统,在软件层实现面向对象存储协议.以循环冗余校验算法的优化与8 bit/10 bit编码游程值计算的优化为例,描述了通过逻辑优化得到更高频率和提高系统性能的方法,并通过软件仿真分析了优化结果.仿真结果表明,优化后的算法逻辑正确且性能大大提高.Object-based storage controller is the core of bbject-based storage devices. On basis of the switch fabric, a high speed object-based storage controller with Nios Ⅱ processor was designed. Low- level protocol of fibre channel in HDL language was implemented by SOPC and object-based storage protocol in software level wag carried out by RTOS. Take the optimization of cyclic redundancy check and the generation of disparity of 8 bit/10 bit encodement as examples, describe the method to achieve higher frequency and improve thesystem performance by logic optimization in detail, and analysis the effect of optimization with software simulation. The result show that the optimized algorithm is correct and improves the performance dramatically.

关 键 词：对象存储控制器 可编程片上系统 光纤通道 实时操作系统 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]