Patent ID: 7768780

Claim:
A rack system for housing a plurality of computers, comprising: a rack assembly configured to support a first stack of computers and a second stack of computers, each computer in the first stack of computers and in the second stack of computers having a front side and a back side opposite the front side, with the back side of each of the first stack of computers facing the back side of each of the second stack of computers; and a plurality of fan assemblies configured to create an airflow through the first stack of computers and into the second stack of computers, wherein the plurality of fan assemblies comprises: a first fan assembly in each computer in the first stack of computers, the first fan assembly configured to create an airflow entering the front side and exiting the back side of each computer in the first stack of computers; and a second fan assembly in each computer in the second stack of computers, the second fan assembly configured to create an airflow entering the back side and exiting the front side of each computer in the second stack of computers.