Exam NS0-184 topic 1 question 10 discussion

Max NS224 shelves is 4, but max stack size is 1. Also, max number of direct attached NS224 shelves on the A400 is 2. Any more than that would have to be switch attached. Option A is definitely wrong because you can't daisy chain the shelves. Option B is ambiguous because it doesn't specify whether the existing 3232C switches are dedicated switches for the existing two NS224C shelves, or are the cluster switches. If they are dedicated storage switches the new shelves could be attached to them. If they are the cluster switches, they cannot be (in ONTAP 9.8). Option C is correct. Option D could be correct if the existing two shelves are directly connected. So options B, C, and D could all be correct, but I'm going to guess they want you to choose CD.

I agree with whoop, NS224 shelves is not stackeable, A is wrong. We can consider that these 3232C Switches are cluster switches for 4 nodes AFF A400, option B is incorrect. C and D make me sense if you read the following documentation about NS224 shelves: https://library.netapp.com/ecm/ecm_download_file/ECMLP2876580

whoop is fine, but D is incorrect because the storage switch is not a dedicated switch, is shared for all shelves

Max Number of NS224 for AFF A400 HA with ONTAP 9.8 is 4. So we can add them without switch. https://hwu.netapp.com/Resources/generatedPDFs/9.8P7_ONTAP-FAS-AFF.pdf?tag=8010 So A and C are ok with the answer. https://docs.netapp.com/us-en/ontap-systems/a400/install-detailed-guide.html#option-2-cable-the-controllers-to-two-drive-shelves Also for detailed cabling.

Maximum shelves for an A400 is 2. Prior to 9.9.1 we need a dedicated storage switch for the shelves. Only option for this situation is C and D. https://library.netapp.com/ecm/ecm_download_file/ECMLP2876580

https://docs.netapp.com/us-en/ontap-systems/ns224/hot-add-shelf.html#requirements-for-a-hot-add