I have AOAG that hosts many remote sites ( more than 10 each has its own databases) databases, in a centralized data center the customer required if one site disconnected from that centralized Datacenter, to have a copy of the last database locally for reading only. I thought I could have the architecture as below the centralized data center to have like 10 AOAG on 2 nodes add a third node for each AOAG on each site respectively.
my question is: in case of disconnection occurred, I won't make failover to this node, but will this node be readable ???