is there something in roadmap that will let use ADP in AFF systems used in a MetroCluster configurations?
Thinking to a simple two node 8020 AFF i.e. with 24x3.8 TB SSD it's a real waste to let more that 7 TB (R4 option) of flash to a dedicate root aggregate.
Please refer KB 2020756 MetroCluster ConfigAdvisor: FAS8020 storage initiator connection rules
3014898 What are the supported configurations for Advanced Data partitioning?
MetroCluster configurations for synchronous replication applicable for Ontap 8.3 and ONTAP 9: