Under the background that the construction of high-performance storage equipment by Guangdong Meteorological Bureau in 2015 is gradually aging and the manufacturer is about to stop the equipment technical support service, in view of the risk of data loss or business interruption of the meteorological business system carried by the storage, combined with the timeliness and continuity of meteorological business, through the use of heterogeneous migration technology, the requirements for new storage construction, data migration principles, storage planning, risk assessment Discuss and study the fallback scheme and data migration, and realize the smooth migration of 430tb data of more than 50 core key business systems in 82 hours. The data migration speed is up to 2.1gb/s, with an average speed of 1.5gb/s. Compared with the traditional method of data migration at the application layer, heterogeneous virtualization migration technology has the characteristics of fast migration speed, short time, less workload, non-stop business and centralized migration