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Failover Clustering and AlwaysOn Availability Groups Expand / Collapse
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Posted Monday, June 10, 2013 9:51 AM


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Does this opening gambit from BOL make sense?

1/ AlwaysOn Availability Groups, the high availability and disaster recovery solution introduced in SQL Server 2012, requires Windows Server Failover Clustering (WSFC).
2/ Also, though AlwaysOn Availability Groups is not dependent upon SQL Server Failover Clustering, you can use a failover clustering instance (FCI) to host an availability replica for an availability group.


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Post #1461634
Posted Monday, June 10, 2013 4:46 PM


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All detailed here and here

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Post #1461808
Posted Tuesday, June 11, 2013 9:00 AM


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Thank you for your re-direction to another resource (much like BOL). I was just after a quick opinion as they seemed to contradict themselves, but nevertheless.


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Posted Tuesday, June 11, 2013 9:14 AM


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I explain it all in the 2 resources I wrote
You might want to read them.


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Post #1462216
Posted Tuesday, June 11, 2013 9:53 AM


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Windows Server Failover Clustering and SQL Server Failover Clustering are separate technologies. The former is the clustering of the Operating System and the latter is of SQL Server instances (which also depends on the former), so the article is in no way contradictory.
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Posted Tuesday, June 11, 2013 10:04 AM


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Many thanks for your comment - I had misinterpreted the clustering as being the same. Now that makes sense.

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