Да, you can place multiple tape drives in one zone. Multiple targets and single initiator is ok as far as tape drives are concerned, i would not do it with storage array ports as they tend to login into each other depending on the replication software installed on the array. And yes i would also zone the AUX port on standby datamover.
Hello friends.  It is a good practice to have one hba from Cellera and one tape drive in one zone. The question is about place hba from standby DataMover to the same zone.
ndmp fc port zoning