Data center having rack clusters with high density, air-cooled server racks

A method of converting an area of a data center from low density server racks to high density server racks, wherein the area employs an air cooling system for cooling the low density server racks, the method comprising;

• removing low density server racks located in the area;
• adding one or more high density server racks to the area, wherein the one or more high density server racks are part of at least one rack cluster;
• and
• solely employing the air cooling system for cooling the at least one rack cluster.

A method of installing high density, air-cooled server racks within a data center, comprising:

• receiving a power specification for a high density server rack and an air cooling specification for a data center;
• determining a rack cluster for multiple high density racks based on the power specification and the air cooling specification;
• and
• arranging the multiple high density racks in the rack cluster employing Computational Fluid Dynamic (CFD) modelling.