Requirements for a hot-add

Your HA pair must meet certain requirements before hot-adding an NS224 drive shelf.

Your platform model and version of ONTAP must support the NS224 shelf and drives you are hot-adding.
NetApp Hardware Universe
You must have the correct number and type of cables to connect the shelf.
NetApp Hardware Universe
Your HA pair must have enough available RoCE capable ports to support the number of shelves you are hot-adding.
For each shelf you are hot-adding, you need a minimum of two RoCE capable ports on each controller. These ports can be on board the controllers, on RoCE capable PCIe cards, a combination of both, or on RoCE capable I/O modules, as supported by your platform model.

If your HA pair does not have enough available RoCE capable ports, and your platform model supports the use of RoCE capable PCIe cards or I/O modules, you must have installed the additional cards or I/O modules into the correct controller slots, as supported by your platform model.

NetApp Hardware Universe

Note: Non-dedicated RoCE capable ports must be configured for storage use (not networking use).
Preparing non-dedicated RoCE capable ports for a hot-add
If you have an AFF A700 or ASA A700 HA pair and you are hot-adding the initial NS224 drive shelf (no NS224 drive shelf exists in your HA pair), you must have installed a core dump module (X9170A, NVMe 1TB SSD) in each controller to support core dumps (store core files).
The core dump module installation instructions can be found on the "AFF and FAS System Documentation Center".

Replacing the caching module or adding/replacing a core dump module
Your HA pair must have less than the maximum number of shelves supported, by at least the number of shelves you plan to hot-add.
You cannot have exceeded the maximum number of shelves supported by your HA pair after hot-adding shelves.

NetApp Hardware Universe
If you are hot-adding a shelf to an HA pair that already has an NS224 shelf, your HA pair cannot have any storage cabling error messages, and it must be cabled as multipath HA.
You can run Active IQ Config Advisor to view any storage cabling error messages and the corrective actions you should take.

NetApp Downloads: Config Advisor
You need a paper clip with one side straightened or a narrow tipped ballpoint pen.
To change the shelf ID, you use the paper clip or ballpoint pen to access the shelf ID button behind the Operator Display Panel (ODP).