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NetApp NS0-521 Exam - Topic 3 Question 34 Discussion

A storage administrator recently implemented ISCSI SAN in a customer environment. Which two actions should be done to ensure the best performance? (Choose two.)
A) Connect host and storage ports to the same switches. and D) Configure Jumbo frames In the entire data path.
B) Decrease the default queue depth on the host to eight.
C) Zone the host by using the host WWPNs.

NetApp NS0-521 Exam - Topic 3 Question 34 Discussion

Actual exam question for NetApp's NS0-521 exam
Question #: 34
Topic #: 3
[All NS0-521 Questions]

A storage administrator recently implemented ISCSI SAN in a customer environment. Which two actions should be done to ensure the best performance? (Choose two.)

Show Suggested Answer Hide Answer
Suggested Answer: A, D

To ensure the best performance in an iSCSI SAN implementation:

Connect host and storage ports to the same switches: This minimizes latency and maximizes the efficiency of data paths by ensuring direct connections within the same network segment.

Configure Jumbo frames in the entire data path: Setting a larger Maximum Transmission Unit (MTU) size reduces the overhead for processing each packet, thus improving overall network performance. Ensuring Jumbo frames are configured end-to-end in the data path is crucial for optimal performance.

For further details, check:

NetApp Best Practices for iSCSI

NetApp Community Discussion on iSCSI Performance


by Nada at Mar 31, 2026, 10:33 PM

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Patti
2 days ago
I think A and D are the best choices. Same switches improve speed.
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Glory
7 days ago
I’m not sure about A, sometimes separate switches can help too.
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Nu
12 days ago
Agreed, Jumbo frames make a huge difference!
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Louisa
17 days ago
Wait, why decrease the queue depth? That sounds counterproductive.
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Huey
2 months ago
I think C is also important, but A and D are key.
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Bettina
2 months ago
Definitely go with A and D for best performance!
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Carolann
3 months ago
I'm a bit confused about the queue depth; I thought higher values were better, but maybe lowering it helps in some cases?
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Avery
3 months ago
I practiced a similar question where Jumbo frames were mentioned, so I feel confident about that option.
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Gladys
3 months ago
I think connecting host and storage ports to the same switches is crucial, but I can't recall if zoning by WWPNs is also necessary.
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Yuriko
4 months ago
I remember something about Jumbo frames being important for performance, but I'm not entirely sure if they should be configured everywhere.
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