A storage system running Data ONTAP has a main unit, which is the device that receives and sends data. Depending on the platform, a storage system uses storage on disk shelves, third-party storage, or both.
The storage system consists of the following main components:
V-Series systems fulfill client requests from either disk shelves or logical units on the back-end storage arrays from IBM, Hitachi, HP, EMC, and more. See the Interoperability Matrix for information about the storage arrays that V-Series supports.