how can I replicate data in 3 different truenas ?

[louisgls]

I've been using this chart for quite some time and it works very well but I have a specific question about it :

I have a kubernetes cluster, 3 zones, a Truenas used for each zone.

How can I have a statefulset with 3 replicas, one replica in each zone ? Pod is correctly deployed in each zone using node affinity but all PVC automatically gets the same storage class, which means all PV are created in the same TrueNAS.

I have tried to work with allowedTopologies https://github.com/democratic-csi/charts/blob/master/stable/democratic-csi/templates/storage-classes.yaml#L32 but I can't make it work. The same storage class gets picked up by all PVC.