Blockage of air due to underfloor cables: When new network or power cables are added under the floor, older unused cables are rarely pulled out to make room. Instead the cables are left undisturbed to minimize risk of downtime. The build-up of cables causes blockages in air flow which contribute to hot spots in the data center

Overhead Solutions: Cables including power/data cables and optical fibers are managed overhead, saving lots of energy because of good ventilation conditions, more significantly, overhead cable management is more flexible and efficient than underfloor cable management.