I've been asked to evaluate moving three production servers to a virtualization platform. The servers currently run Windows Server 2003 with a mix of applications that, given a catastrophic failure, could tolerate up to 1-2 days of downtime - but certainly not on a regular basis.
My concern is that there is a lack of in-house expertise in this area. The day-to-day support is handled by a (primarily) developer-focused team, with secondary support from the institution's help desk and then vendor support as needed with about a 24 hour response SLA.
Given this type of scenario, would you have any concerns running either Hyper-V or ESX as opposed to separate physical machines?