基于SATA3.0的高速大容量存储系统设计

Design of High-speed Mass Storge System based on SATA3.0 Interface

在通信技术快速发展的背景下,数据传输呈现速度快、容量大、带宽高的特点,为解决由此带来的数据缓存问题,设计一款基于SATA3.0协议的高速大容量存储系统。采用Xilinx-Virtex7系列XC7VX690TFFG1158作为控制核心,SRIO协议缓存前级高带宽大容量的数据,同SSD的数据通信采用SATA3.0协议,同上位机之间的数据通信采用RGMII协议。利用FPGA并行处理数据的优点,应用RAID0阵列实现并行控制8块SSD。经实际测试,存储系统平均写入速度大于20 Gb/s,整个SSD阵列平均写入速度可达29.2 Gb/s,平均读取速度可达35.7 Gb/s,在卫星通信等高速数字信号处理领域有广泛应用前景。同时为高速大容量存储系统的设计提供一定的参考意义。

With the rapid development of communication technology,data transmission is characterized by high-speed,large-capacity and high-bandwidth,but data cache can be a problem.In order to solve this problem,a high-speed and largecapacity storage system is designed based on SATA3.0 protocol.Using Xilinx-Virtex7 series chip XC7VX690TFFG1158 as main controller,SRIO protocol is used to cache the data of Pre-device with high bandwidth and large capacity,SATA3.0 protocol is used to communicate with SSD,and RGMII protocol is used to communicate with the host computer.Taking advantage of the parallel processing characteristic of FPGA,RAID_0 array is used to realize the parallel control of 8 SSDS.The test result shows that,for the whole storage system,the average data writing speed is greater than 20 Gb/s,the average write speed of the entire SSD array can reach 29.2 Gb/s,and reading speed can reach 35.7 Gb/s.This storage system has a wide application prospect in the field of high-speed digital signal processing such as satellite communication,and it provides some reference significance for the design of high-speed and large-capacity storage system.