What is the procedure for licensing the windows server, if the hypervisor xenserver or vmware and not Hyper-V?

Decided to ventilate the issue of licensing for virtual machines running on Citrix XenServer or VMWare.
The Internet is very much just about this, but completely confused.
found this phrase:
"One license of Windows Server 2012 Standard or Datacenter is sold on a 2 CPU physical host servers (either on Microsoft Hyper-V or VMware vSphere)"
It kind of sheds light on what is required.
I would like to clarify, I have a Blade Server. If I understand you correctly, then I need to buy Std licenses according to the number of blades, as each blade has on-Board 2 percent. And each license will allow me to run on each blade is not more than 2 virtual machines. If I want to run more, for every blade you need to buy another std license for each blade.

Am I to understand the licensing?
Thank you for the answers.

PS: found this article.
In it something is written understandable. By the way the phrase is taken from there.
Otherwise, the Internet, and on the website of Microsoft, nothing is clear. There are practically no examples.
October 3rd 19 at 02:04

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2 answers
October 3rd 19 at 02:06
To call not easier. Called several times, never got a straight answer to your question.
And the question is: there are three dual-processor servers installed XenServer hypervisor integrated into a cluster, it is planned to deploy 10 VM's with Windows servers. It takes a license provided that will be used a function of live migration, including to provide fault tolerance?
The easiest way is to buy 3 licenses of Windows Server Datacenter that will allow you to run unlimited number of VMS on each server, but their cost is equal to 18 licenses Server Standard.
It would seem that you can just buy 5 licenses Standard that will allow you to run 10 VMS. However, licenses are bound to the physical server and use the feature of live migration without violating the license agreement will not work. Because by its terms, the license transfer is possible not more often than once every 90 days.
It turns out that you need to purchase 15 licenses for Standard 5 licenses for each server. Or, at least 9, at 3 (6 VMS) on the server and configure the migration to a single server couldn't have been more than 6 VMS.
October 3rd 19 at 02:08
The examples truly understand. Microsoft has more than details, it seems clear: http://download.microsoft.com/documents/rus/WindowsServer2012/WS2012_Licensing-Pricing_Datasheet_ru.pdf
thanks for the link, I read this article. The problem is that Microsoft is playing a game called "silent". If we talk about server virtualization, be sure it's some sort of Microsoft Server and Hyper-V. About the other and not mentioned as if they are not. Understand the motive and principles on which it is done, but it's still confusing. - Shaun_Will commented on October 3rd 19 at 02:11

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