The required feature described as a wish

As a User/Admin/Operator

I would like to my HA enabled vm's to be restarted by vm ha across cluster in case the primary storage zone-scoped.

The current behaviour looks for hosts which are in Up state in the same cluster.

https://docs.cloudstack.apache.org/en/4.21.0.0/adminguide/reliability.html#ha-enabled-instances

As zone wide storage spans clusters it would be great the vm's gets started across cluster when a host goes down.