Is Always On Failover Cluster Instance considered legacy?

Category: sql server dr

Question

District9 on Tue, 06 Aug 2019 22:17:12


Is Always On FCI considered legacy technology to be avoided in favor of AG?  Or is it still robust option for HA that will be supported by MS well into the future (unlike the now deprecated mirroring feature)? I realize that selection of HADR technology depends on our particular needs, and FCI would suit part of our needs.  But we don't want to implement technology that might be deprecated in a few years.  We're considering a hybrid approach to HADR -> 2-node FCI (with AG primary replica)+AG secondary replica in Azure.  That seems like a pretty conventional approach that will get us all the HADR features we need.  The biggest benefit there is shared storage of the FCI and thus  avoiding cost of dedicated storage for multiple on-prem AG secondaries.

Replies

Uri Dimant on Wed, 07 Aug 2019 04:12:20


>>till robust option for HA that will be supported by MS well into the future (unlike the now deprecated mirroring >>>feature)? 

Yep, sure, it is supported and widely used , go ahead , do not worry ...

Cathy Ji on Wed, 07 Aug 2019 05:51:10


Hi District9,

>> Or is it still robust option for HA that will be supported by MS well into the future (unlike the now deprecated mirroring feature)?

As Uri mentioned, it is still supported and widely used currently. As I know, there is no article mention that the feature will not supported.  Please feel free to use it. 

Best regards,
Cathy Ji