Re: Why would I want Hyper-V,
If you're a Microsoft shop, it is great. Especially if you get charity/gvt/edu pricing. Can only directly compare to VMware, so
Management tools a joy to use compared to VMware's
Manage (backup/copy) your .vhd files using Windows explorer rather than needing VMFS tools
Inject changes directly into virtual machine targets from Server 2012
VSS integration is strong
It is reliable and stable
In real world usage I've seen CPU usage from 16 core host to socket capped virtual servers such as MS SQL Std,scale much better than in equivalent VMware. Won't pretend to understand how it distributes load so well from one to many, but anecdotally from me it does. On the downside it fares less well with virtual machines running many hundreds of small services/applications running concurrently (like terminal server)
It is a LOT cheaper than VMware for in most SMB scenarions, possibly for the big boys too depending on density..