I am researching licensing, but hope you validate what I read. For a typical 3-node cluster consisting of 2 x HA nodes plus 1 x DR node, and where secondary HA node and secondary DR node are not being used for backup or read/write access, must all
three nodes be licensed with Enterprise Edition? Let's say Ent Edn 2016. I think the answer is yes. Also, if a secondary node is being used for backup, the answer is definitely yes. Is that correct? I think it is only in a scenario
where a SQL instance is being used for test that it does not have to be licensed. Thanks.
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