Metrics developed by The Green Grid for data centre efficiency.
Performance Indicator (PI)
In continuation of the PUE, The Performance Indicator is a set of metrics combined, also developed by The Green Grid.
PI is used for assessing data centre power and cooling effectiveness, whereby operators can use it to evaluate the cooling performance of their data centre, also predicting the future thermal states.
The three metrics which are included in PI measurements are PUE ratio, IT Thermal Conformance, IT Thermal Resilience.
It measures each of these metrics individually, then determining how a change in one metric affects the others.