Outsourcing of IT Infrastructure to an External Data Center
ICT
Measure Goal
The goal is to standardize the calculation of electricity savings triggered by outsourcing IT infrastructure to an external, highly efficient data center, taking into account efficiency differences between local server rooms and professional data centers.
Symbols, Terms and Units
| Symbol | Description | Unit |
|---|---|---|
Elokal | electricity consumption local server room | kWh/a |
ERZ | electricity consumption in data center | kWh/a |
PUElokal | Power Usage Effectiveness local | - |
PUERZ | Power Usage Effectiveness data center | - |
PIT | IT power (servers, storage, network) | kW |
Ns | standard effective duration | a |
Calculation Formulas
Stromverbrauch lokaler Serverraum
The electricity consumption of the local server room results from IT power multiplied by the PUE value and annual hours.
Stromverbrauch Rechenzentrum
The electricity consumption in the data center results from IT power multiplied by the better PUE value of the data center.
Annual Electricity Savings
The annual electricity savings result from the difference in PUE values multiplied by IT power and annual hours.
Cumulative Electricity Savings
The cumulative electricity savings result from the annual savings multiplied by the standard effective duration and the correction factor.
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