Upgrading to Windows Server 2012 Hyper-V

I recently had the oppurtunity to do this. Things to note:

1. Export the VMs and before exporting specify memory as static.
2. Upgrade takes a long time and reboots several times.
3. Before importing the VMs go to the Virtual Switch manager and configure an external network.
4. Importing the VMs take a long time.
5. Be sure to upgrade the integration services on all the VMs.

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