基于PCI-E总线的高速SDH信号存储系统

High Speed Rate SDH Signal Storage System Based on PCI Express Bus

SDH光纤信号传输速率高、数据量大的特点是对该数据实时连续存储的主要难点:针对信号的这一特点,文章提出采用PCI-E总线作为数据传输总线,保证了数据存储的总线带宽;采用磁盘阵列作为数据存储的物理介质,解决了单个磁盘速率低容量小的问题;在此基础上给出了硬件结构配置和软件设计,实现了高速SDH信号的存储;测试结果表明,该系统运行稳定可靠,满足2.5Gb/sSDH信号的存储需求。

The main difficulty of storing real--time SDH fiber signal sequentially is that the SDH signal has the characteristics of high speed and massive storage. In respect of these characteristics, the paper proposes to adopt PCI--E bus as data transition bus, which guarantees the bus bandwidth of the data transition; to adopt RAID as physical medium for data storage, which solves the problem of low speed rate and minimal storage of single disk. On the basis of the proceeding content the paper describes the hardware structure and software design and implements the storage of SDH signal. Testing result shows that this system runs stably and reliably, and meets the requirement of 2. 5Gb/ s SDH signal storage.