Server 2012 Hyper-V hosting Server 2008 Which Cals are needed

My domain network is all 2008 servers and Windows 7. We have 2008 CALs for all users.
We just migrated our virtualization to a Server 2012 (workgroup) server; so now all my Server 2008 servers are hosted on a Server 2012 Hyper-V host (in workgroup mode).

Am I required to upgrade my CALs now or just when I have a working 2012 server on the domain.

Thank you.

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Cliff GaliherCommented:
You need to upgrade your CALs. As always l, licensing advice here is not legal binding.
Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
The answer is it depends.  If you have MVLS (Volume Licensing) or Enterprise licensing then downgrade licenses are including with every OS license.  If you have OEM, Select or open licenses then downgrade rights may not exist, and in any case, you should check with Microsoft and see if you qualify.  I am aware of cases where Microsoft has made exceptions as to which version of Windows your VMs can run.  In your case, if Microsoft acknowledges that you could run Win2K12 as Hyper-V host and Win2K8 as VMs then you do not need to purchase any CALs.  If you are to run your VMs as the same version as the host then you might as well purchase 2012 CALs.
Station2646Author Commented:
Thanks for your replies.

My Server 2008 licenses are Open License and (Windows 7 are on SA); and I've maintain Server 2008 CAL's.
I simply moved my 2008 VM's from VMware to MS Server 2012 Hyper-V and wanted to know if this move triggered the need to purchase 2012 CAL's.
I figured that since the clients are only connecting to the 2008 OS's that I didn't need the 2012 CAL's.

Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
In your case, you are absolutely right.  Sounds like you already own licenses and thus, no additional procurement is required if you are not upgrading your VMs.

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Station2646Author Commented:
Thank you all. Just needed to know if the 2012 H-V host triggers the need for CAL's after the migration.
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Windows Server 2012

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