When you migrate a vFiler unit to another storage system on the same subnet, you must reconnect CIFS clients. If the vFiler unit owns qtree resources and not the volumes in which qtree resides, you must remount all NFS exports on these qtrees.
When the vFiler unit owns the full volumes, NFS mounts persist the migration.
You can continue to access LUNs without any interruption. Although an iSCSI host is briefly disconnected from the source vFiler unit, an initiator hides this brief disruption from applications accessing the LUNs.