Server is virtual or physical?

Hi All,
How can I know whether the server I am connecting to is a virtual or physical one? The server might be having any Unix OS (Linux/Solaris/HP-UX etc.).

Is there any system files / commands which can show these concrete information?

Thanks in advance for the replies.

sanzee

There is no generic way. You need to check for every operating system the use of each virtualization technology it supports. You might also have more than one virtualization involved (eg: Solaris zones running in VirtualBox).