I'm not sure if this is the right forum to ask, since my question involves virtualization, but I'm talking about the Server edition anyway.
I am planning to get a dedicated server at the certain hosting company, and I am planning to run Ubuntu Server (most probably 12.04 version) on it. However, I would like to put one virtual machine (since the server will have 12 GB of RAM) for a mail server (probably Zimbra or Debian running Postfix + Dovecot, haven't decided yet). Now, I know nothing about virtualization on Linux, so I wanted to ask which virtualization route is best for me?
Also, I want to know whether I will need 2 IPv4 addresses or just one, since I'm going to have Ubuntu Server and a virtual machine inside it? Is there a way for a virtual machine to be accessible from the same IP as the dedicated OS? I need a VM only for Zimbra, everything else (nginx, MySQL, etc.) will run on a dedicated OS.
Can someone point me to some tutorials or web sites where I can get more info on this particular situation? I have modest experience with Linux administration, but only on a VPS, this is the first time that I'm getting a dedicated server, so I suppose that some things are different, especially when it comes to virtualization.
Thank you in advance for your help.
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