You are cabling drive expansion shelves for an E2800 storage system.

In this scenario, which cabling method should you use?

A. You use SAS expansion port EXP1 and reserve SAS expansion port EXP2 for a second drive expansion stack.

B. The controller A and the controller B SAS expansion ports (EXP1 & EXP2) should be divided between the A-side and B-side IOM-12 modules for all the expansion shelves.

C. You use SAS expansion port EXP2 and reserve SAS expansion port EXP1 for a second drive expansion stack.
D. The controller A and the controller B SAS expansion ports (EXP1 & EXP2) should not be divided between the A-side and B-side IOM-12 modules for all of the expansion shelves.

Reference https://library.netapp.com/ecm/ecm_download_file/ECMLP2773537