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Exam NS0-161 topic 1 question 49 discussion

Actual exam question from Netapp's NS0-161
Question #: 49
Topic #: 1
[All NS0-161 Questions]

Click the Exhibit button.

You want to add shelves to an AFF A300 HA pair that currently has six DS224C shelves already connected. You are using the onboard SAS port only, and you want to keep the multipath high availability (MPHA) configuration.
Referring to the exhibit, what is the maximum number of additional shelves allowed to be added in this configuration? (Choose the best answer.)

  • A. 2
  • B. 10
  • C. 6
  • D. 4
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
by BroerK at Dec. 15, 2020, 9:21 a.m.

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skeef7
Highly Voted 3 years, 11 months ago
Max shelves in SSD loop is 4, we have only 8 SAS ports onboard, therefore we can add only 2 shelves. Ansver is A
upvoted 7 times
wizcas
3 years, 4 months ago
agree We have 6 shelves already. So 2 stacks are cabled as we have a max limit of 4 in an SSD stack. Per stack, we require 2 ports per controller, because 1 port for square loop and 1 port for circle loop. As we have 2 stacks, we use all ports (4) on each controller. We can add 2 more shelves to complete the second stack to its maximum of 4 shelves. Graphic: https://library.netapp.com/ecm/ecm_get_file/ECMM1280392 page 33 for example
upvoted 1 times
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Guss_122
Most Recent 3 years, 7 months ago
As you have 2 remaining port on each node. you can add a new stack of 4 shelves for each node so 8 shelves. You can complete the first stack with 1 shelve on each node so 2 shelves. 10 shelves can be added
upvoted 1 times
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malotru
3 years, 8 months ago
Ans is A Go to : https://hwu.netapp.com/ add an AFF300 and max shelves you will see the good result ;)
upvoted 3 times
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dtcristi
3 years, 9 months ago
The LED display on the left shows the shelf ID indicator. You can have up to ten shelves in a stack. For the numbering, the first stack should start at zero, the next stack starts at ten and then twenty and so on.
upvoted 1 times
dtcristi
3 years, 9 months ago
so...maybe D ?
upvoted 1 times
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bugwisr
3 years, 10 months ago
Answer is A - max stack is 4.
upvoted 2 times
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Vindi
3 years, 11 months ago
Agree its 4 per loop for SSD so A
upvoted 3 times
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Vindi
3 years, 11 months ago
Is it not 4 as it already has 6 installed?
upvoted 1 times
dtcristi
3 years, 9 months ago
i agree with you...i don t know why it should be different...
upvoted 1 times
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Bonezy
3 years, 7 months ago
It says there are 6 shelves, its doesn't mention that 4 of them are in one stack and 2 in another stack. As SSD loop max is 4, we assume we can ad an additional 2 to the existing stack of 2
upvoted 1 times
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n273
3 years, 11 months ago
B is correct, MAX supported SSD are 384
upvoted 2 times
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BroerK
3 years, 11 months ago
I think the answer should be B
upvoted 1 times
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