scope:

The present document details measures which may be taken to improve the energy efficiency within ICT sites for broadband deployment. Clauses 2 and 3 contain references, definitions and abbreviations which relate to this part; similar information will be included in the corresponding clauses of the other parts, thus ensuring that each document can be used on a "stand-alone" basis.

Within the present document:

• clause 4 introduces ICT site concepts including those specifically related to network operators;

• clause 5 develops the concept of Data processing and Communication Energy Management (DCEM), introduced in ETSI GS OEU 001 [i.2];

• clause 6 details the approaches that may be employed to improve energy efficiency within the information technology infrastructure;

• clause 7 details the approaches that may be employed to improve energy efficiency within the communication technology infrastructure;

• clause 8 details the approaches that may be employed to improve energy efficiency within the environmental control systems;

• clause 9 details the approaches that may be employed to improve energy efficiency within the power distribution system;

• clause 10 details the approaches that may be employed to improve energy efficiency within the physical infrastructure;

• clause 11 provides a summary of energy efficiency approaches within ICT sites;

• annex A provides indications of the first order effect of applying the approaches outlined in clauses 6, 7 and 9;

• annex B contains the recommendations of the present document.

This will enable the proper implementation of services, applications and content on an energy efficient infrastructure, though it is not the goal of this multi-part deliverable to provide detailed standardized solutions for network architecture.

The present document focuses on energy efficiency. The CO₂ footprint is not taken in account to the present document but in the near future a regulation on CO₂ footprint will be will be created.

Two separate aspects of energy efficiency are considered

• actions to improve energy efficiency in existing ICT sites in the short or medium term;

• actions to improve energy efficiency in new ICT sites, in medium or long term.

The domains under study are:

• in the Information Technology (IT) infrastructure: all aspects of the technical infrastructure in the ICT site, including servers, storage arrays, backup libraries and network equipment including routers, switches, etc.;

• in the IT operational strategy: all consolidation initiatives, such as virtualization, physical consolidations, usage of specific software and processes;

• in the technical environment: all aspects concerning energy usage, cooling and, more generally, all disciplines involved in the technical environment of the ICT site.