[manila] multi az replication

good afternoon, i am using zed, on streched ceph as backend on multiple az. i would like to emulate aws efs multiple nfs mount points for each user tenant (one on each different az) using manila, is it possible? ideally i would like to expose to each users tenant a manila vm as nfs exporter to custormer' instances, and as backend (of manila) use a cinder volume on ceph (rbd? cephfs? nfs?) my problem is how can i create say 3 different manila service vms (one in each az) with different frontend ips all pointing to same rbd/cephfs volume? am i doing wrong? thank you.