Are the virtual machines created in Windows 2012 Datacenter compatible with Windows 2012 Datacenter R2? I have an existing Windows 2012 Datacenter and I recently got another server loaded with Windows 2012 Datacenter R2. Can I backup or copy the vm's from 2012 and restore it to 2012 R2 provided that the virtual switches are identical on both servers? Highly appreciate everyone's input.
Yes, it's no problem to import a VM on Server 2012 R2 which was created in Server 2012. You should also be able to do the reverse, hosting a 2012 R2 created VM on Server 2012.
Even VMs created on Server 2008 R2 can be imported into 2012 R2