Hosted desktop virtualization is one of the major technology enablers of BYOPC. So, in that vein, I must digress. My question: does hosted desktop virtualization lead to less power used in the organization? My answer: No.
Think about it. Yes, we are moving from a full blown PC (or laptop) to a thin client. However, a monitor is kept in both PC and thin client scenarios. But, I will agree that we have just cut the PC power from roughly 100 kw/hour to 10 kw/hour. But how about all of the servers in the datacenter (we are talking 30-50 users/server)? How about all of the storage — and the BC/DR storage? The networks (that were there before but may need to beefed up)? How about HVAC and all of the environmentals?
I speak to our clients about this everyday — I have hosted many panels on this topic as well. Universally, the folks that i have spoken to who have moved to hosted desktop virtualization are not seeing less power used — they are seeing much more. They are just seeing a transference of power so that it is not in the building facilitates budget but in the datacenter.
Finally, in the majority of implementations that I am seeing today, companies are not even moving to thin clients immediately. Why? To save costs. They figure (and I agree) that they can double the length of their PCs. So, again, if i am not going to move to thin clients for another 3+ years, moving to hosted desktop virtualization will be anything BUT a green IT story.
VERY interested in your thoughts! Please comment here and lets get a dialog going.