There are a lot of questions about the benefits of private clouds. This calculator from Cisco will help you have a meaningful dialogue with the business.
It takes five minutes and it's free. Best deal on web today, even better than a bacon-covered kitten
This Cisco interactive tool helps measure business benefits of private cloud computing based on the size and needs of your organization. Benefits include a lower TCO, faster provisioning of new capabilities, greater security, improved integration of collaboration, and overall agility.
For the record, I do not advocate mixing kittens with bacon; it's not delicious, bacon gets furry and the kitten gets greasy.