Can IOM12B and IOM12 modules be mixed in the same shelf stack?

Mixing IOM12B and IOM12 modules in the same shelf stack is supported if the following conditions are met:
- The installed ONTAP version is:
  - 9.5P13 or later patches
  - 9.6P7 or later patches
  - 9.7 or later
Mixing of different shelf module types within each individual shelf is not supported
- As part of non-disruptive module changes between IOM12 and IOM12B for the shelves in the stack, mixing is supported for the short period of time where you have mixed modules in the shelf after the first SAS domain has been changed
  - If you’re updating the whole shelf stack from IOM12 -> IOM12B, replace one SAS domain (left side, right side) at a time
  - Don’t stop or pause for a long time after replacing the 1^st SAS domain
  - As always, ensure both SAS domains are completely healthy (i.e. MP-HA) before performing module swaps
For shelf stacks that also contain IOM6 or IOM6E modules:
- AFF A400, FAS8300, and FAS8700 systems do not support mixing IOM6 and IOM12/IOM12B modules in a directly-attached stack. Mixed IOM6 and IOM12/IOM12B stack are only supported behind ATTO bridges on these models.
- For all other platforms, refer to Hot-add IOM12/IOM12B shelves to a stack of IOM6 shelves for specific rules