Hi Team,
We have WSFC cluster (2 nodes running SQL FCI) in primary DC and 1 standalone node in DR (running SQL standalone with its own storage). Its a multisite setup. SQL AG is running SQL FCI as primary and SQL in DR as Secondary replica. We are redesigning and future design we are looking for is - 4 node WSFC , 2 node SQL FCI in Primary (shared storage between node 1 & node 2) and 2 node SQL FCI in DR (node 3 nd 4 will have shared storage). We are planning to convert stand lone DR SQL to Failover (same configuration as of Primary DC) and later make it Primary and use Primary setup currently as DR due to some changes in datacenter. Setup is Windows server 2012 R2 with SQL 2014.
I am looking for pointers what are things that we need to consider and change in DR SQL standalone, first; to make it SQL FCI, configure AG between Primary DC and Secondary DC (primary being Primary AG and DR node as secondary replica). Later SQL FCI in DR will be used as primary and current FCI SQL in primary datacenter will act as DR, would it be possible to do so? Just making SQL DR FCI as primary datacenter in AG would give the same experience technically as of primary AG today? Any pointers will be appreciated . Thanks
Regards