Forum Discussion
SQL Server Clustering and Failover Cluster Instance
Hi Buddies, I need a clarity on whether Clustering in SQL Server and Always on Failover Clustering Instance in SQL server are same or not. If not, kindly share some notes for both. Thanks in ...
Hi DuersinKurt,
Thanks for your response. I am aware of Always On Failover Cluster Instance (FCI) and Always On Availability Group (AG) are different concepts.
My doubt here is whether Clustering in SQL Server and Always On Failover Cluster Instance (FCI) are same or different.
Initially I thought the calling names are different but both concepts are same. But still some confusion is here.
Kindly clarify.
Thanks for your response. I am aware of Always On Failover Cluster Instance (FCI) and Always On Availability Group (AG) are different concepts.
My doubt here is whether Clustering in SQL Server and Always On Failover Cluster Instance (FCI) are same or different.
Initially I thought the calling names are different but both concepts are same. But still some confusion is here.
Kindly clarify.
Hi csk9178
w/o being that deep into the full technical specification yes, they are the same thing. you are assuming correctly.
As part of the SQL Server Always On offering, Always On Failover Cluster Instances leverages Windows Server Failover Clustering (WSFC) functionality to provide local high availability through redundancy at the server-instance level-a failover cluster instance (FCI).
https://learn.microsoft.com/en-us/sql/sql-server/failover-clusters/windows/always-on-failover-cluster-instances-sql-server?view=sql-server-ver16