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  • 2017 Corporate Responsibility Report

Measurable success: Reduced CO2 generation at data centers

We also keep our goal of reducing our carbon footprint in mind when planning and operating our data centers. To achieve this goal, we take a two-step approach. It starts with optimizing energy consumption at each data center site and then continues with improving processes throughout the global data center landscape.

The key indicator for increased energy efficiency at our data centers is the PUE img factor. We were able to reduce the average PUE factor img at the T-Systems data centers in Germany from 1.85 to 1.54 between 2008 and 2017. In comparison with the previous year, the figure remained constant in 2017. The reason for this is the ongoing consolidation of the data centers, where applications from less energy-efficient sites are migrated to new, highly efficient data centers. This increases the PUE value of the decommissioned data centers in the short term. Overall, this process lead to a constant PUE value across all data centers in the reporting year.

Data centers are becoming more energy-efficient

The DC11@2018 program for improving processes throughout our global data center landscape has been up and running since 2013. The project combines physical data center consolidation (i.e., reducing data center space and sites) with logical consolidation (i.e., virtualizing data center infrastructure). The objective of the DC11@2018 program is to consolidate global data center capacity at FMO (future mode of operation) data centers using the latest IT technology. In 2017, we continued to remain on schedule with this program. Within the scope of the physical consolidation, we decommissioned three old data centers in Germany. At the same time, we further optimized air conditioning in the existing data centers in Biere and Munich.

The target average PUE factor at all FMO data centers in the Group will be 1.4 once the program has been completed in late 2018/early 2019. At the end of 2017, we were already at a PUE value of 1.51. This requires a homogeneous IT landscape combined with optimum capacity utilization of data center infrastructure, IT hardware and the software running on the systems. For the year 2020, the latest program plans indicate accumulated reductions in CO2 by up to 51 percent compared to 2012.

Our target PUE factor for our highly efficient data center in Biere is 1.3. To achieve this target, it will be necessary to respect a given temperature level and to achieve a capacity utilization of at least 80 percent. We were not yet able to achieve the PUE target value in 2017.