The servers and a large part of middleware which is behind atlas at home is provided by the IT department at CERN, which support is essential for us.
Links to find more information :
- A very recent overview of the history, state of the art and future of the LHC computing on the grid
- LCG web site : http://wlcg-public.web.cern.ch/ (get-involved section in particular)
- Other volunteer computing projects supported by CERN : http://lhcathome.web.cern.ch/
- Slightly older but still informative : some interviews and news about the GRID at CERN : https://cds.cern.ch/record/1132356/?ln=fr"