Abstract: The server is the core element of the data center, but the traditional server is not only in a single form, but also has defects such as complex management, so it is gradually eliminated, replaced by virtual server, and the technology to achieve virtual server is virtualization technology (collectively referred to as server virtualization technology).Server virtualization technology, as a relatively new technology, is not popular in the construction of data centers. Traditional servers are still widely circulated, which hinders the update and development of data centers.Therefore, for the purpose of popularizing server virtualization technology, we will carry out research, discuss the basic concepts and main advantages of this technology, and finally put forward the server virtualization application scheme and matters needing attention in the construction of data center.

Key words: server, virtualization technology, data centre