For this exercise, consider a simplified equation for the total operational power of a WSC as follows:

a. Assume an 8 MW datacenter at 80% power usage, electricity costs of $0.10 per kilowatt-hour, and a cooling-inefficiency multiplier of 0.8. Compare the cost savings from (1) an optimization that improves cooling efficiency by 20%, and (2) an optimization that improves the energy efficiency of the IT equipment by 20%.

b. What is the percentage improvement in IT equipment energy efficiency needed to match the cost savings froma 20%improvement in cooling efficiency?

c. What conclusions can you draw about the relative importance of optimizations that focus on server energy efficiency and cooling energy
efficiency?

Transcribed Image Text:

Total operational power = (1+ Cooling inefficiency multiplier) *IT equipment power.