Abstract: With the popularization of railway informationization, the use of computer equipment to provide reliable and timely information services is indispensable, computer software and hardware are unable to avoid failure, and termination of these failures is likely to lead to application service and harm of railway transportation safety production. By using the third party high availability software, this article implemented the high availability of the dual hot standby in the production system without sharing the shared storage, achieved real time data mirroring of host and standby computer. It not only ensured the safe and stable operation of the production system, but also greatly reduced the cost of hardware procurement and operation and maintenance of the enterprise.