computer system in other words the coolant flow speed alternates between relatively low or no speed and relatively high speed the relatively u201c calm u201d sub periods facilitate heat absorption by the air while the relatively u201c windy u201d sub periods help reduce dead spots in the latter case the high speed more turbulent coolant flow can entrain heated fluid that would in a laminar flow system be less likely to be exhausted fig1 depicts a blade server computer system ap 1 in which four blades 11 12 13 and 14 are inserted into a chassis 15 whereas a standard rack mount server can exist with at least a power cord and network cable blade servers have many components removed for space power and other considerations while still having all the functional components to be considered a computer a blade enclosure provides services such as power cooling networking various interconnects and management u2014 though different blade providers have differing principles around what should and should not be included in the blade itself and sometimes in the enclosure altogether the present invention provides embodiments for all these variations and for any number of blades as well as other forms of modular and non modular computer systems blades 11 14 include processors 16 media 17 e g.