NetApp NS0-521 Exam - Topic 3 Question 27 Discussion

Actual exam question for NetApp's NS0-521 exam

Question #: 27
Topic #: 3

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

AConnect host and storage ports to the same switches.

BDecrease the default queue depth on the host to eight.

CZone the host by using the host WWPNs.

DConfigure Jumbo frames In the entire data path.

Show Suggested 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 Isidra at Jul 29, 2025, 10:52 AM

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Miesha

2 months ago

Connecting to the same switches is basic but super important!

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Malcom

2 months ago

Wait, can Jumbo frames really make that big of a difference?

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Vincent

2 months ago

Not sure about decreasing the queue depth, seems risky.

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Theodora

3 months ago

Definitely go for Jumbo frames, they help a lot!

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Veronica

3 months ago

I think zoning with WWPNs is a must too.

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Rima

3 months ago

I'm a bit confused about the queue depth; I thought increasing it was usually better, but maybe decreasing it helps in this case?

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Felix

3 months ago

I practiced a similar question where zoning by WWPNs was mentioned as a best practice, so I feel like that could be one of the right answers.

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France

4 months ago

I think configuring Jumbo frames is important for iSCSI performance, but I can't recall if it needs to be done on all devices in the path.

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Earleen

4 months ago

I remember something about connecting host and storage ports to the same switches for better performance, but I'm not entirely sure if that's the best option here.

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Kasandra

4 months ago

I'm a bit unsure about the queue depth option. I'll need to double-check the best practices for iSCSI performance tuning.

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Ilene

4 months ago

Zoning the host by WWPN makes sense to isolate the traffic. And configuring jumbo frames could boost throughput. I'll select those two.

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Gracia

4 months ago

Decreasing the queue depth could help, but I'm not sure if that's the best approach. I'll have to research that a bit more.

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Novella

5 months ago

Okay, let's see. Connecting the host and storage to the same switches seems like a good idea to minimize latency. I'll go with that one.

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Lucina

5 months ago

Hmm, this seems like a tricky one. I'll need to think carefully about the options and how they might impact performance.

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