Cost-effective and reliable method for disaster backup
Sha Jin-chuan · Jisuanji yingyong yanjiu · 2007
This paper presented a reliable disaster-tolerant method with low-cost but high-efficiency.It consisted of several components including local monitor module,transmission module,high-speed cache,optimization module,consistency chec- king module and remote replay module.The local monitor module was in charge of monitoring the data changes happened on local host and saving them into high-speed buffer disks.The transmission module and the optimization module were responsible for sending the data on cache to remote host efficiently.The replay module submited the write operations on remote host and the consistency checking modules that were located separately on local host and remote host cooperate to ensure consistency. This method has low requirement for both host and network,and a demo system,based on this method,it has been realized on Linux.Numerical results using popular benchmark program has show that this demo system has high performance.