I needed to create a network diagram which included virtual machines. I found these icons to distinguish between physical and virtual servers.
![image image](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi15NTqHyc7f2UgNAXOdfrGzD8D9wiP9MfXSx0l4jPg9NNj8EL7n7sXNUHMWh0e-0aHshzD0XyCN5YVNaZ2Tt4YydrNrUlwDW3RCPmP_obZ7K2_rtqwezUvk65hvwffP3vn_YfdJSKj3Rhn/?imgmax=800)
http://www.vmguru.com/files/Virtualization_2k3.zip
There are more icons available here.
http://www.visguy.com/2008/05/27/virtualization-visualization-with-visio/Etiketter: Visio