I got an interesting post from Jimmy the Mad Salesman the other day:
'For the last 2 days, I have been looking in trade journals, google, and tech blogs for a strong ROI to move to desktop virtualization. Whenever I read an example, the ROI is always vague. So far the only example I have seen is a deal HP and VMware did with Collier County, FL but again only soft ROI are revealed. so far I see it makes sense from a management and security (perspective).'
ROI is not that hard. I think of it like this for VDI:
1. What do I save in licensing costs by virtualizing?
2. What do I save by not having to license certain applications (OS, A/V, etc)?
3. How many support calls were logged in the past year?
4. What were the support calls related to - apps, os, SaaS, new users?
On the flip side if a company virtualizes Windows, that will help w/support and management of a machine, however little if anything is saved.
If a company goes down the VDI path with Ubuntu (for example) all of the agents required to protect Windows from the several hundred thousand threats that exist go away, Citrix goes away, RAM to support Vista evaporates, and the list goes on.
In my opinion this means that if you virtualize Windows, you gain a measurable ROI, but centainly far from breathtaking.