粗波分复用技术在同城容灾系统中的应用--《华中科技大学学报(自然科学版)》2008年01期

         为满足降低数据丢失风险,提高数据和应用系统可用性的需要,在研究粗波分复用技术特点的基础上,利用粗波分复用光电转换模块设计了存储扩展接口,对接口的电气特性进行了测试.测试结果表明:接口的电气特性良好,对信号具有放大的作用.同时,对基于该接口构建的城域网范围内光纤通道存储扩展系统原型的读写性能进行了测试,测试结果显示,20 km距离的存储读写吞吐率达到了14 Mbit/s,为构建同城容灾系统提供了一种新方法.
【作者单位】：华中科技大学计算机科学与技术学院 湖北武汉430074(秦磊华;余胜生;周敬利);惠州学院教育技术中心 广东惠州516001(蔡昭权)
【关键词】：容灾系统;粗波分复用;接口设计;电气特性
【基金】：国家自然科学基金资助项目(60373088)
【分类号】：TN929.1
【DOI】：CNKI:SUN:HZLG.0.2008-01-025
【正文快照】：
　　1容灾及波分复用容灾系统包括数据容灾和应用容灾[1].在图1所示的容灾系统中,最重要的两个应用是数据中心1和数据中心2之间的同步数据镜像和分布式集群系统,这两个应用要求数据中心之间的网络具有高带宽、低延时的特性,千兆以太网不能满足上述应用的需要,目前的同城容灾系统中往往采用波分复用(WDM)技术.虽然DWDM密集波分复用比CWDM粗波分复用能支持更多路的复用[2],具有更大的容量,图1典型的同城容灾系统但CWDM的下列两个特点使其在成本上更具有优势:a.器件成本低,由于CWDM激光器不需要制冷、波长锁定和精确镀膜等复杂技术,相对DW…

　On the basis of the characteristics of course wave division multiplexing(CWDM),a kind of interface for storage extension was designed by using CWDM photoelectric conversion module to mitigate the risk of losing data and improved the availability of data and application systems.Electrical specification of the interface with CWDM was tested.The results showed that the performance of the interface with signal amplification was acceptable.Moreover,random read and write performance test of fiber channel disk array through the CWDM connectivity with the extension distance of 20 km was also performed.Its results showed that the throughput of this remote reand/write was 14 Mbit/s.Therefore,it was concluded that the new method is provided for building disaster recovery system within metrolitan area network.
【Keyword】：disaster recovery system;course wave division multiplexing(CWDM);interface designing;electrical character  下载地址：http://emuch.net/journal/download.php?id=CJFDTotal-HZLG200801025&title=%E7%B2%97%E6%B3%A2%E5%88%86%E5%A4%8D%E7%94%A8%E6%8A%80%E6%9C%AF%E5%9C%A8%E5%90%8C%E5%9F%8E%E5%AE%B9%E7%81%BE%E7%B3%BB%E7%BB%9F%E4%B8%AD%E7%9A%84%E5%BA%94%E7%94%A8--%E3%80%8A%E5%8D%8E%E4%B8%AD%E7%A7%91%E6%8A%80%E5%A4%A7%E5%AD%A6%E5%AD%A6%E6%8A%A5%28%E8%87%AA%E7%84%B6%E7%A7%91%E5%AD%A6%E7%89%88%29%E3%80%8B2008%E5%B9%B401%E6%9C%9F