I have 3 windows servers installed on one ESXi Host.Can I use one licence key to activate the licence for the three servers on the same host? The OS version is windows server 2016 standard edition. I already called Microsoft for the enquiry, but there was no concrete answer for this. I will quite appreciate if anyone can help with this question
A minimum of 8 core licenses is required for each physical processor and a minimum of 16 core licenses is required for each server.
Core licenses are sold in packs of two.
Standard Edition provides rights for up to 2 Operating System Environments or Windows Servers containers with Hyper-V isolation when all physical cores in the server are licensed. For each additional 1 or 2 VMs, all the physical cores in the server must be licensed again. (regardless of the hypervisor used)
So in your specific case you'll either need a DataCenter edition license or with Standard edition you can also license the cores a second time to cover the additional (third) VM guest.