What should be the minimum size of the subnet in a multus deployment for all storage traffic, public and cluster on the same interface? While working with an edge use case in a 3-node compact cluster setup, we may keep in mind that some customers/partners, may not be able to provide a full /24 range in remote edge locations. Reported by: rhn-support-arolivei https://access.redhat.com/documentation/en-us/red_hat_openshift_data_foundation/4.10/html/planning_your_deployment/infrastructure-requirements_rhodf#annotations:1c03870c-f6c6-4915-9d67-7dba2beef8b3
If public and cluster network are separated, we need two different subnets. Each storage node needs two IPs one in each subnet. Also, we need to include the holder/node components from csi, so 2 IPs per node (they don't need access to the cluster network). From that, even allocating /24 which gives us around 252 IPs should be sufficient for most of the clusters. Hope this helps.