If you have an ESXI host with 2 physical processors 6 cores on each so a total of 12 cores. Does each VM on the host essentially utilise all 12 cores. For software licensing exercises it is based on cores (SQL Server). So from the outset if a VM running the SQL Server software is hosted by an ESXi with 12 cores then presumably you need 12 core licences. But I wasnt sure if VM's can be configured to only use say 4 or 6 of the cores on the host, therefore reducing the number of core licences required.