Since it's Blog Action Day 2009 today, I'd like to remind all the readers of my blog how climate change can be prevented by following really simple rules.
Since Unix Tutorial is a technical blog, I'll try and stay as technical as possible within the topic.
Virtualize to consume less energy, get rid of old hardware
Old servers required a much bigger commitment in the past: not only did they cost a fortune, but they also needed a lot of space and required a lot of power. These days, 1u or 2u server solution can easily outperform a computing system which used to take a whole cabinet in your datacentre. And since the cost of supporting old hardware only increases with each year, it makes a lot of sense to simply but a new server to replace the old infrastructure.