I agree with almost all of these except for the comments on server consolidation. We are a VM shop and we have saved money in cooling and power. However, there are no savings in administration. I consolidated 40 servers into seven VM physical servers. We still have to administer the 40 servers (patching, monitoring applications, etc). In addition to the administration of the 40 servers, we have to administer the VM servers, including backups with is an additional cost.