I ask because in the architecture diagram on wikipedia, it indicates the "host" OS (root partition) is on a par with the "guest" (child partition), with Hyper-V components below all of them.
If that is the case then the host OS is itself being virtualized, so will suffer from that overhead even if there are no guests installed.
- Do the hypervisor/vm-bus only get installed once you select the Hyper-V role, or are they below the surface on every Windows Server R2?
- Does adding the Hyper-V role require a reboot?
- How does the presence of the Hyper-V components affect performance of the root partition?
- Is the performance of root identical to child partitions?
Note: I am using Windows Server 2008 R2.