ROSE HA is a set of high availability software that provides protection against inevitable unexpected or planned downtime of business hosts.ROSE HA software is installed on two hosts at the same time to monitor the status of the system, coordinate the work of the two hosts, and maintain the availability of the system.It can detect faults of application level system software and hardware, isolate and recover errors in time, and provide users with a computer operating environment that almost never stops at the lowest cost.