Hyper V, Ensuring Servers can't "See" each other on the same host.

Hello, I have a Hyper V host (HP DL386 G6) running Hyper V v2 on SErver 2008 R2.
It has  a VM running SBS2008 which is a DC, AD, Exchange server and a few other things.
It runs fine.

I have taken a copy of that VM and I want to run another version of it to test run some migrations on the SAME hyper V host.

The question I have is, is it possible to set this up to the live SBS2008 server is running and CANNOT see the copy of it running on the same HYPER V host?
I have the live SBS2008 VM running of for example "External1" virtual network (so linked to a physical network card).
I want to be able to set up a PRIVATE or internal virtual network and run the copy of the live SBS2008 to test migrations (It'll be deleted after a day or so).
It's obviously very important that they can't see each other.

Is this possible?  
afurnessAsked:
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kevinhsiehConnect With a Mentor Commented:
Just set it up on a new virtual network that is private instead of external.
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afurnessAuthor Commented:
I think it's by setting a Vlan ID to an virtual internal network that is separate to the live VM.
But would like to know for sure if this is the case.

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afurnessAuthor Commented:
I have set it up as a network that is INTERNAL atm, the reason is I want a viurtual XP client to be able to see the test SBS2008 server to test connectivity and so on.

In this case is INTERNAL not as good as PRIVATE?

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James HaywoodConnect With a Mentor Commented:
Create a private network and assign it to the test VMs. Traffice will only then flow between those machines.

Quick guide to Virtual Networks under Hyper-V

http://cobracommunications.co.uk/2010/09/11/hyper-v-networking/
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afurnessAuthor Commented:
Thanks to both of you for clearing that up.
I tried that out and it works fine.
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