VMware tool tries new twist on power savings | Underexposed - CNET News.com
VMWare has virtualization software that lets you move the functions a server is performing to another server. Typically this is done to save money on server hardware (put two lightly used functions on one server) or recently they have been getting in to dynamically moving server instances to spare servers when extra load is needed. However they have taken that to the next step (for the opposite scenario) to save power and shut down unneeded servers by moving their functions to a single server.
Not exactly implementable for the average us consumer, but interesting (to me anyway) nonetheless.
The drawback usually is that the cost of the vmware software to do this, is high enough to make it much easier to just pay for a lot of extra server hardware and a lot of extra power. And really if the cost is that high for the softwrae, that means they are paying lots of programmers to work on this, and those programmers could be working on building solar cells or something like that. Or at least that's how I just ify being cheap and just buying another $500 dell server instead of a $3000 vmware license.