Metric · draft
A measurable indicator (students often call it a KPI) used as evidence for a design decision.
| Category | Energy |
| Unit | ratio (≥ 1.0) |
| How it is calculated | Total facility energy ÷ energy used by the IT equipment. 1.0 would mean zero overhead for cooling and power distribution. |
| Origin | standard |
| Standard | The Green Grid / ISO/IEC 30134-2 |
| Status | draft |
Also known as: PUE · Computing per watt · Cooling energy efficiency
What it measures
Standard efficiency metric for data centres; lower is better.
Calculation
Total facility energy ÷ energy used by the IT equipment. 1.0 would mean zero overhead for cooling and power distribution.
Connections
- Used in case studies: Julia Godard Lombard, Robin Jesenský
- Informs decisions on: Waste heat and cooling of data centres
Something wrong or missing? Suggest a correction