first question here so please advise if I've missed anything.
I've read this question (AG of 2 replicas on 2 nodes in WSFC : is it possible to add 3rd replica to AG and NOT add 3rd machine WSFC? ) but it doesn't quite match my scenario so am asking my own one.
I have a 2-node FCI (SQL 2017 Enterprise) with the requisite underlying WSFC. This sits in DC1. I have been given a standalone node (also SQL 2017) in DC2. I've been asked to configure AG between the FCI and the standalone node.
We don't want/need to offload any reporting/read operations to the secondary replica, it's just for DR
It will be in asynchronous mode.
I can't add the standalone node to the WSFC because the storage for the FCI would not be available in a DR situation.
It is recognised that we will have to manually failover the AG if the situation arises and there will be some data loss if it happens as an unplanned event. RTO/RPO is under discussion currently.
So, my question(s) is/are 1/. I assume I would just follow instructions for setting up a clusterless AG configuration (read-scale but not make it readable?) and 2/. therefore, because no read-operations are going to be hitting the standalone node, then no listener is required?
Hopefully that all makes sense.