Exploring Different Types of Rack Servers: A Comprehensive Guide What is a rack server?A rack server is a type of server designed to be installed in a frame called a rack. This design can effectively utilize physical space and is easy to expand. This rack contains multiple mounting slots, each of which is designed to fix the hardware units that are fastened in place with screws. Each slot is called a "U" or rack unit. Rack servers come in various sizes,...