I have posed this question via official MS license channels - but I am finding contradictory information.
Customer has 2 node ESX cluster with Windows Server 2008 R2 Data Center edition and CALs for all users
The solution is fully license compliant.
The customer is undertaking a cloud migration but in the short term require to deploy a single Server 2012 R2 VM within the ESX cluster.
1) I am aware we'll have to buy 2016 under the core model and use the down grade right to deploy 2012
2) I am aware that a CAL upgrade will be needed
Given the situation I am proposing to buy Server 2016 Standard just for the single new deployment.
I am told that mixing Standard & Data Center within a cluster is not permitted from a license perspective.
Anyone any help or issues? I can find little or nothing on a hybrid deployment. While the customer is happy to buy upgraded CALs, which will be needed no matter what - they want to buy as little underlying Server license as possible