It seems to me that it should also be possible to spread ODF worker nodes over 3 zones - as long as they can communicate. That would have the advantage that not 100% overcapacity is needed, but just 50% overcapacity. Similar setups have been recommended for Kubernetes multizone regions, so it seems reasonable to setup a similar situation for ODF. Reported by: nl49827 https://access.redhat.com/documentation/en-us/red_hat_openshift_data_foundation/4.10/html/configuring_openshift_data_foundation_for_stretch_cluster/introduction-to-stretch-cluster-disaster-recovery_rhodf#annotations:03d3e42c-c3d9-4978-8e6f-6cccb4731a9c