Hello,
is it possible to use a virtual server (VMware) to install multiple Mikrotik instance on the same hardware?
If yes, do I need multiple MT softkware keys? The objective is not to save MT license fee, but to have multiple MT instance on a single machine to be used as testing environment. 
Rgds
Yes you can do it
Max
http://mikrotikexpert.com
http://maxid.com.ar