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Minimum number of Replicas needed - at least three?


Minimum number of Replicas needed - at least three?

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Minnesota - Viking
Minnesota - Viking
Old Hand
Old Hand (349 reputation)Old Hand (349 reputation)Old Hand (349 reputation)Old Hand (349 reputation)Old Hand (349 reputation)Old Hand (349 reputation)Old Hand (349 reputation)Old Hand (349 reputation)

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I'm scratching the surface of AO. I currently have one SQL 2012 FCI on a WSFC. Which means one Active node at a given time? I cannot set up an AO with this, can I? Logically speaking I need “at least two” active (up & running) SQL Server instances to set up. And in your example you used a total of 5 nodes, and the minimum would be 3 for a AO on FCI + WSFC rt?

Here is what my FCI looks like,

there is no point in having AO when only 1 instance of SQL is running at a given time. Right ?

If yes what would I need to set up AO
A new Node in the Cluster or
Any other Stand alone SQL Should(same version) do as well ?


Today is the tomorrow you worried about yesterday:-)

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