You may buy the core licences using any combination of core packs, for example: How you purchase them doesn't matter, then. Then, the answer would be clear from the start: 48 core licences. It should have been, "How many licenses do you need for two 24-core servers?". Strictly speaking – and licensing requires precision – the initial question is incorrect. However, now we know that core packs are divisible, and you only need three 16-core packs.īut even that answer is flawed. You may be tempted to purchase four 16-core packs following the broken logic and outright bad advice. How many 16-core packs do you need for two 24-core servers? And it only talks about calculating the quantity of single-core licences. Microsoft's licensing agreements refer to it as the official terms and conditions document. In any confusing situation, your "golden reference" is Microsoft Product Terms. So, what is right? What's the proper interpretation? Here's the rule. And the same mistake exists in the LSP portal (explore.ms). However, if you look at your CSP entitlement in the Microsoft Office Admin portal, core packs are called "licenses". And that is your entitlement – the number of single-core licences. You will see packs in Transaction Data, but the summary will always have single-core licences. Microsoft License Statement (MLS) clearly shows single cores in the License Summary. Here's how packs are presented in Microsoft's official documents and on the web: Unfortunately, Microsoft's own and contracting web developers played a significant negative role. Let me be clear, and please excuse my language: that is total and utter bollocks. If you listen to their logic, you may not assign core licences from a single pack to different servers or Azure virtual machines. According to them, a 16-core pack is a single license. "16-core license".īased on that, salespeople invented another myth. And for various reasons, many call the license packs "licenses", e.g. However, sales and procurement deal with multi-license packs. There is not a single mention of multiple-core licences. If you study any official document from Microsoft on Core licensing, you will inevitably notice that they only and exclusively talk about single-core licences. It's "a pack of licenses", not "a license" Instead, you may be offered the following:Ĩ-core packs (Azure subscription licences in Microsoft CSP), You cannot procure single-core Windows Server Core licences. How Windows Server Core licences are sold Therefore, each server has 24 cores, and the total sum of cores is 48.įor the sake of the fullness of the picture, the same rules apply to System Center and Core Infrastructure Suite (CIS). In addition, there are two minimums you must respect:Īt least eight cores per physical processor,Īt least sixteen cores per server (note: this requirement does not apply to SPLA). To license a server, you need to license all its physical cores. How to calculate Windows Server Core licenses To avoid discussions around editions and virtualisation, please assume that these are two cluster hosts, and we are calculating Windows Server Datacenter licenses.ĭo you want to know the correct answer? Then please read this article further. How many 16-core packs do you need to assign to two 24-core servers? Can you answer it confidently?
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