I assume by "managed storage", you guys mean primary storages, either zone -wide or cluster-wide.
For Xen hypervisor, ACS does not support "zone-wide" primary storage yet. Still, I can live migrate a VM with data disks between clusters with storage migration from web GUI, today. So, your statement below does not reflect current behavior of the code. - If I want to migrate a VM across clusters, but if at least one of its volumes is placed in a cluster-wide managed storage, the migration is not allowed. Is that it? [Mike] Correct