Self-contained computer servers that are built for high density are called Blade Servers. For power, space and other considerations, many components are removed from the Blade Servers but still they have all the functionalities to be considered as a computer. Advantage of Blade Servers is that Blade Servers provides services such as networking, power, cooling, various interconnects and management. Different Blade Server providers have different principles as to what to include and what not to include in the blade system as a whole.