Jun 17, 2019 - 02:07 AM
SQL Enterprise with SA allows unlimited usage across a cluster
Jun 17, 2019 - 02:08 AM
1) When you say cluster, presumably you mean a VMware cluster and the instances you are running are virtual?
2) What are the licence metrics? Per core or server / CAL?
3) Do you have software assurance on the licences or are they subscription (which include SA)?
4) How dense is your virtual environment for SQL Server?
If you only have SQL Standard core licences, you cannot licence the physical cores of the host cluster for virtualisation. You may only licence the virtual cores of the VM running the software (subject to a minimum requirement of 4 licences per VM). In this context you can download the version being run to 2008. However, be aware that if you have vMotion running in the cluster, you must have software assurance on the licences to give you licence mobility rights, i.e. the right to re-assign the licence at will to a different host server, as the VM is moved.
If you have SQL Standard server / CAL licences, you can licence the VM running the software. Again, you have version downgrade rights and you need to have SA to give you licence mobility rights.
If you have a low-density virtual environment, and are only running Standard edition SQL, the common sense approach would be to follow the methodologies outlined above, depending on what licences you have. If, however, you have a lot of SQL VMs in the cluster and want to fully licence the physical hosts in that cluster, you must use SQL Server Enterprise core licences. If you have SA, you get the right to unlimited virtualisation per host, meaning you can run as many SQL VMs in the cluster as you can actually cram on there.
Hope this all helps - if you can provide some more context, I would be happy to narrow down the scope of the answer specifically for you.