Overview of adding an X91148A module - AFF A9000
You can add an I/O module to your system by either replacing a NIC or storage adapter with a new one in a fully-populated system, or by adding a new NIC or storage adapter into an empty chassis slot in your system.
Check the NetApp Hardware Universe to make sure that the new I/O module is compatible with your system and version of ONTAP you’re running.
If multiple slots are available, check the slot priorities in NetApp Hardware Universe and use the best one available for your I/O module.
To non-disruptively add an I/O module, you must takeover the target controller, remove the slot blanking cover in the target slot or remove an existing I/O module, add the new or replacement I/O module, and then giveback the target controller.
Make sure that all other components are functioning properly.