There are two ways to complete NetApp Certified Implementation Engineer—SAN Specialist certification: If you are preparing for NCIE—SAN Specialist, ONTAP certification, you will be required to complete NS0-160 NetApp Certified Data Administrator, ONTAP exam first, then pass NS0-509 NetApp Certified Implementation Engineer – SAN, ONTAP exam. If you are preparing for NCIE—SAN Specialist, E-Series certification,