How do you add a Hyper-V VM to a host on 2008 R2 if you don't have an available NIC

How do you add a Hyper-V VM to a host on 2008 R2 if you don't have an available NIC?  I want to add a VM but I was told I have to have an available NIC dedicated to the VM.  Is that the case?  If not how do I add it.
J.R. SitmanIT DirectorAsked:
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Cliff GaliherCommented:
If you don't want it sharing a NIC with another VM or with the host, and you want it to have external network access, then you can't. But beyond that, VMs dont require dedicated NICs, or even NICs at all.
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Dimarc67Commented:
Generally, the majority of, if not all, VMs on a host server "share" the hardware NIC.  You can dedicate a hardware NIC to a VM, but it's usually unnecessary.

In Hyper-V Manager, right-click on the host server and select "Virtual Switch Manger" to look at the virtual network switches configured on the host.  Here you can review the current NICs and virtual settings, and create additional virtual switches if desired.  If there's already a virtual switch (highly likely), you should see the virtual NIC in the host server's Network Connections window (Control Panel\Network and Internet\Network Connections).

Bottom line, you don't need to dedicate a NIC for each VM on a host (and thank goodness for it).

Dimarc67
Frederick, MD
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J.R. SitmanIT DirectorAuthor Commented:
I just added the new VM and selected to install the OS from DVD.  when I try to start it, it fails.  How do I get the OS installed?
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Cliff GaliherCommented:
That would have nothing to do with NICs. Please post the error.
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J.R. SitmanIT DirectorAuthor Commented:
see atached
hyperv.jpg
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J.R. SitmanIT DirectorAuthor Commented:
wrong attachment.  here it is
hyper-v.png
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Cliff GaliherCommented:
How far into the install did you get? That doesn't look like an install error *at all.*

You are leaving out a ton of information. Experts can only help as far as you are willing to work with us.
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J.R. SitmanIT DirectorAuthor Commented:
check the 2nd attachment.  I posted the wrong one the first time
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Cliff GaliherCommented:
That makes a little more sense.

THE most likely cause, based on the drive letter, is that the DVD/ISO is currently mounted in another VM. Those *cannot* be shared in 2008 R2. You'll need to "eject" the virtual media in the other VM first.
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J.R. SitmanIT DirectorAuthor Commented:
cool.  That was it.  Thanks for answering a different question.
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J.R. SitmanIT DirectorAuthor Commented:
Thanks to both of you.
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