Understanding PUE

Question 1

PUE means?

Answer 1

Power Usage Effectiveness

Question 2

What percentage of U.S. Power is consumed by data centers?

Answer 2

2 percent of all the power generated in the United States is consumed in data centers.

Question 3

What percentage of power consumed in data centers do not make it to the IT equipment?

Answer 3

Approximately 50% of all power consumed in a data center do not make it to the IT equipment.

Question 4

How PUE is calculated?

Answer 4

Total data center power usage (Divided by) Total IT equipment power usage = PUE

Question 5

What is the best PUE rating?

Answer 5

The best is 1.0), and the worse is (3.0 or More)

Question 6

What is the average PUE rating of a data center?

Answer 6

1.8 to 1.9

Question 7

How to Improve PUE?

Answer 7

1. Right size your UPS and cooling equipment.

2. The closer the IT load is for the UPS and cooling system the more efficient the data center will be.

Question 8

What equipment is uses the highest amount of energy.
A. UPS System
B. IT Equipment
C. Cooling System
D. Lighting

Answer 8

(C.) Cooling System

Question 9

What is the maximum inlet temperature of the equipment?

Answer 9

80 degrees. (27 degrees Celsius)

Question 10

In order to improve power consumption efficiency, what equipment should be the focus?

Answer 10

Cooling

Question 11

What is the temperature range of data center based on the Ashray Standards?

Answer 11

64.5 to 80.6 degrees Fahrenheit.