Server and data center

The utility model provides a server and a data center, and relates to the technical field of cloud computing. The server includes: a chassis; the plugging and unplugging assembly comprises an unlocking handle and a plugging and unplugging module which are in transmission connection, the unlocking handle is arranged outside the case, the plugging and unplugging module is arranged in the case in a pluggable mode, the plugging and unplugging module has a locking state and an unlocking state, and the plugging and unplugging module is converted from the locking state to the unlocking state through unlocking force acting on the unlocking handle, and the direction of the unlocking force is the same as the pulling-out direction of the plugging module. According to the technical scheme of the embodiment of the invention, the pull-out process of the plugging module is simpler, and replacement, operation and maintenance of the plugging module are facilitated. When the server is a fully-immersed liquid-cooled server, the