Why did you want to allocate on the virtualization.

I always recommend that the DBMS allocates on the physical server.
So database consollication would be a better choice.

Main role of virtualization is splitting the performance of CPU and Memory.
You must have deep consideration before you move your server on the virtualization.
Especially your server requred high performace of disk and network.

CPU : lose the performance about 20%

Disk Performance : lose the performance about 25%

Network : I didn’t find the known performace issue, but I have had a experience about that. I moved high network performance required server from physical to virutal. At the first it goes well but after 1 week, it does work for any network workload, only the way to wake up my server is reboot.
Although it can be happened on the physical server, but on the physical server it occured per 1~3 month.