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Definition of hyperthreading and Logical processor and VMware for SQL licensing

Posted on 2014-02-04
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Last Modified: 2014-02-08
Hello there,

Because of the recent change in licensing model of MS SQL licensing from per proc to per core. We have quite a few SQL servers hosted in ESX hosts.

How deos hyperthreading in use and Logical processors contribute towards calculating number of cores per VM?

And is Dynamic Workload management same as DRS?

Please advise.

Thanks and Regards
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Question by:goprasad
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lcohan earned 500 total points
ID: 39832995
"Hardware Thread
A hardware thread is either a physical core or a hyper-thread in a physical processor."

From http://www.google.ca/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=1&cad=rja&sqi=2&ved=0CCYQFjAA&url=http%3A%2F%2Fdownload.microsoft.com%2Fdownload%2F7%2F3%2FC%2F73CAD4E0-D0B5-4BE5-AB49-D5B886A5AE00%2FSQL_Server_2012_Licensing_Reference_Guide.pdf&ei=GxbxUpe0H8Tr2QXwjoDgCw&usg=AFQjCNHdiY7wTdgDJKB9TgNDmeZr1A7BbA


More clarifications here:
http://www.mssqltips.com/sqlservertip/2942/understanding-the-sql-server-2012-licensing-model/

"Note that hyper threading is ignored for core licensing purposes when licensing physical servers. The same does NOT apply to VMs - see the section below!" - check  Core factor at link above.
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