基于iSCSI协议的集群光盘服务器的研究与设计

Research and Design of an iSCSI-based Cluster CD Server

随着网络上光盘资源的增长,光盘服务器成为光盘网络共享的重要技术。针对传统光盘服务器的缺点,设计并实现了一个基于 iSCSI 协议的高性能集群光盘服务器 CCS(Cluster CD Server)。CCS 系统采用高自治、自维护的集群策略,提高了系统的并行性和可扩展性;采用逻辑的名字空间管理,既实现了单一名字空间,又避免了单点失效;采用虚拟技术并对 iSCSI 协议进行了精简和优化,减少了网络小包的传输数量,提高了网络带宽的利用率。在详细介绍了 CCS 系统的设计方案的同时,进行了相应的试验测试和性能分析。

With the increasing of CD data in internet, CD Server has became the new important technology of network share. Considering the disadvantages of the traditional CD server, we presented a novel iSCSI-based High Performance Cluster CD server which adopted high autonomy and maintenance by itself to improve the parallelism and the expand- ability of the system; the CCS adopted logic namespace management to realize a simple namespace and avoid Single Point of Failure; and it simplified and optimized iSCSI protocol by using virtual technology to reduce the quantity of transmission of the network small bag and improve the utilization ratio of the bandwidth of the network. The paper introduced the design of the CCS in detail, and performed an intensively performance evaluation study on the CCS.