How to calculate the accurate PUE? Continuous monitoring is the king's way
Accuracy of report
accuracy
Level to calculate a useful value, the measurement of the electrical performance of the entire data center equipment is the key. The green grid organization defines four levels of reports, with different precision, cost and complexity.
The attention of the first to third levels is continuous monitoring, and the level is the most basic. Only at the level of can we measure the investment in equipment energy and power facilities. The lowest frequency of measurement is called once a month.
Level II requires measurement at least once a day in the middle stage. At this point, the energy consumed by the device must be measured at the output of (power distribution unit) or (remote power panel).
Data collection is relatively cheap in both cases. The system, and have embedded instruments for measurement, so it is necessary that no additional measurement is required.
If the load needs to be powered from the non, a more accurate one-stage and two-stage method is required. If it is only powered by the system, its embedded instrument can only give a reasonable approximation of the power consumption of the equipment, which can be reported at the first level. However, if the air conditioning unit is powered by, it is inaccurate to assume that it is no longer valid. Therefore, the two-stage method of can only read devices that can distribute power measurement.
At the most advanced level III, the measurement interval is reduced to once per minute, US server And target measurement is more accurate. The measurement of the energy consumed by the equipment is a reading of an independent rack.
Particle size measurement
In addition, if the data center is a mixed use facility, the power consumed by the physical infrastructure will be calculated more finely. This is because a simple power facility for measuring input power is not enough. Additional tools can be installed in various equipment such as water chillers, air handlers, and specific data center facilities for each part of the load to make measurement.
Another consideration is the change of data center load and layout time, as well as the power infrastructure. Therefore, the circuits in the data center facilities need to be described in real-time files to find out how the services are allocated to different calculations. The tracking circuit is installed with any measuring instrument to obtain accurate data.
You need a good data center infrastructure management () system to collect data from all tools and calculate the cycle. Once deployed, it provides accurate continuous measurement to help users understand the current situation and how it changes over time, its load, weather, and cooling performance.
