At the last chapter , we discuss the fault - tolerant technology and propose the model ( ft - mrs ) in the new field . as we know service concept is an important concept for distributed computing , the fault tolerant model build on the level of the service ( component / application ) . we applied the fault tolerant in the insurance syste m 文章最后结合分布式容错技术的发展，提出了针对服务级对象容错模型，由于服务是大颗粒对象(组件或者应用程序) ，又是internet分布式计算环境中软件开发的重要概念，该模型从服务级容错这个新视角对容错的复制管理、失效检测、失效恢复技术及其算法进行了深入的探讨，从而使保险业务组件提供高可用的分布式应用。
The american argos satellite has done experiments on the primary anti - radiation measures of cots components , and has obtained valuable experiment datas . the software fault tolerance techniques sihft provide error detection coverage of over 99 % , attracted researchers ’ attention . the experiment has demonstrated that it ’ s possible to satisfy the requirement of space applications by software techniques without special hardwares 其中,软件容错技术sihft ( softwareimplementedhardwarefaulttolerance )达到了大于99 %的检错覆盖率,引起了人们的关注。这项实验说明了在不需要专用硬件的情况下,使用软件技术也能达到航天应用的可靠性要求。
Then we turn to a production system which demands high availability service ; design a disaster tolerance system for it . we use two - module technique , high availability clusters in lan for disaster tolerance , and use disaster tolerance center technique in wan . we describe the software and hardware architecture of the disaster tolerance system in detail , divide the whole system into subsystems , discuss the subsystem function and relationship between the subsystems , then design and analyze the disaster tolerance control center subsystem and state detection subsystem 接着针对某实际工程项目的生产系统对系统提供高可用性服务的需求,给出了一个在本地使用计算机高可用集群,双机容错技术,在异地使用远程容灾中心进行容灾的容灾系统的设计,讨论了该容灾系统的软硬件体系结构,子系统的划分,各个子系统的功能及它们之间的关系,并对其中的容灾系统控制平台和状态检测子系统进行了详细的设计与分析。
Because it ’ s hard to get radiation - harden hardware overseas , so the software fault tolerance techniques are significant for our national space enterprise . the computer platform of 863 plan project ” micro intelligent free - flying space robotic system ” consists of cots component . the orbit and the radiation environment of the robot are similar to ones of the argos satellite , and the system is required to have high reliability . therefore it ’ s necessary to applied the software fault tolerance techniques into the system to improve the anti - radiation capability after the techniques been verified valid 因为我国很难从国外获得辐射加固的硬件,所以,这项软件容错技术对我国航天事业的发展具有较大意义。 863计划项目“小型智能飞行机器人系统”所用的计算机平台采用商用器件,其卫星的运行轨道与argos卫星轨道近似,面临的辐射环境与argos卫星相似,要求具有高可靠性。因此,小型智能飞行机器人系统有必要在验证sihft技术有效的基础上,应用软件容错技术,提高其空间抗辐射能力。
