ILNAS EN 50600-4-7

ILNAS-EN 50600-4-4

ILNAS-EN 50600-4-7:2020 Edition 04/2020 
Information technology - Data centre facilities and infrastructures - Part 4-7: Cooling Efficiency Ratio

This document specifies the Cooling Efficiency Ratio (CER) as a Key Performance Indicator (KPI) to quantify the efficient use of energy to control the temperature of the spaces within the data centre. This document: a) defines the Cooling Efficiency Ratio (CER) of a data centre; b) describes the relationship of this KPI to a data centre’s infrastructure, information technology equipment and information technology operations; c) defines the measurement, the calculation and the reporting of the parameter; d) provides information on the correct interpretation of the CER. Annex A describes the correlation of CER and other KPIs. Annex B provides examples of the application of CER. Annex C introduces the parameters that affect CER. Annex D describes requirements and recommendations for derivatives of KPIs associated with CER.

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