Meanwhile, I've also come across a few more sources of data and industry surveys on the state of Data Centers and IT energy use and efficiency:
- SearchDataCenters' study on Data Center construction: In 2007, 22% of survey respondents said they were involved in a data center construction project. More than 60% of respondents will be involved with construction in 2008. And only 18% of respondents will not undertake a data center construction project in 2007 or 2008...
- This very interesting study by AMD on power consumption and cooling in the data center; what makes it so intriguing are the trends it began to forecast back in 2005. Plus a more recent survey they conducted on Power and Heat Management.
- A more current study sponsored by AMD (but performed by a guy I hold in high esteem, Jonathan Koomey of Lawrence Berkeley National Laboratory) tracks shifting patterns in data center energy use across five world regions. It's a tour-de-force of estimating total power consumption around the world based on quantities of servers in use.