The storage arrays used during migration must have a primary path from each controller (in use) present in both fabrics. This means that the source array and the destination array nodes being migrated to must be in a common zone on both fabrics. It is not necessary to add other controllers in the NetApp cluster, only those actually importing/migrating LUNs. While you could use indirect paths for the migration, the best practice is to use active/optimized paths between the source and destination arrays. The following figure shows both the HDS AMS2100 and NetApp ONTAP storage having a primary (active) path present in both fabrics.