心跳线 meaning in English

heartbeat
privata net configuration-socket

In the procedure of the implementation of the db155m2ip , we also study the theory and concept of the online dual backup system , the difference between db155m2ip and the online dual backup system , the theory of online , the theory of hot swap between primary system and secondry system , fault upload and the implementation of the system software . . after implementation the db155m2ip , we test the performance of the db155m2ip , the hot time between primary system and secondry system , fault upload , fault test , fault location
在db155m2ip系统的实现过程中,本课题主要研究了双机热备份的概念和工作原理; db155m2ip系统和传统双机热备份系统的不同点; db155m2ip系统心跳线的工作原理、主服务系统和从服务系统之间的切换原理和条件、系统出现故障后的一些故障上传和相应的软件子系统的实现。