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Huawei H19-308_V4.0 Exam - Topic 5 Question 11 Discussion

SCSI applies to SAN storage with HDDs, and NVMe applies to all-flash SAN storage.
A) TRUE
B) FALSE

Huawei H19-308_V4.0 Exam - Topic 5 Question 11 Discussion

Actual exam question for Huawei's H19-308_V4.0 exam
Question #: 11
Topic #: 5
[All H19-308_V4.0 Questions]

SCSI applies to SAN storage with HDDs, and NVMe applies to all-flash SAN storage.

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Suggested Answer: A

This statement reflects the architectural evolution of Huawei OceanStor systems. The Small Computer System Interface (SCSI) protocol was designed decades ago for mechanical drives (HDDs). It uses a single command queue with a depth of 32 commands, which was sufficient for the physical limitations of rotating platters and moving heads.

In contrast, Non-Volatile Memory express (NVMe) was designed specifically for flash media. It replaces the legacy SCSI stack to eliminate bottlenecks. NVMe supports up to 64,000 queues, each with 64,000 commands, allowing for massive parallelism. Huawei OceanStor Dorado (All-Flash) systems utilize End-to-End NVMe (from the SSD to the controller, and from the controller to the host via NVMe-oF) to achieve microsecond-level latency. While modern flash arrays can still use SCSI (via FC or iSCSI) for compatibility, the full performance potential of an all-flash array is only realized through NVMe. Therefore, in modern storage design, SCSI is the legacy standard for HDDs/Hybrid arrays, while NVMe is the optimized standard for All-Flash arrays.


by Mayra at May 31, 2026, 09:32 AM

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Alva
7 days ago
FALSE! Both can coexist in different setups.
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Wynell
12 days ago
TRUE seems right. SCSI is legacy, NVMe is modern.
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Boris
18 days ago
FALSE! NVMe is evolving, not limited to flash.
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Katina
23 days ago
I lean towards TRUE. SCSI is for traditional setups.
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Vilma
28 days ago
FALSE. NVMe is specifically for flash storage.
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Gabriele
1 month ago
TRUE makes sense. HDDs are slower, NVMe is faster.
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Matilda
1 month ago
I disagree, it's FALSE. NVMe can also work with HDDs.
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Georgeanna
1 month ago
I think it's TRUE. SCSI is older tech.
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Juliann
2 months ago
True, but SCSI is still relevant in many systems.
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Johanna
2 months ago
Seems right, but isn't NVMe more versatile?
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Bernardo
2 months ago
Wow, I didn't know that!
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Robt
2 months ago
I disagree, NVMe can also work with HDDs in some setups.
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Dianne
2 months ago
That's true, SCSI is for HDDs.
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Matilda
2 months ago
My notes say SCSI is older tech, but I can't recall if it applies to SANs with HDDs only. This is tricky!
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Rodolfo
3 months ago
I feel like SCSI can be used with both HDDs and SSDs, but I could be mixing it up with something else.
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Karol
3 months ago
I think I saw a practice question that mentioned NVMe is specifically for flash storage, so I might lean towards TRUE.
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Tonja
3 months ago
I remember studying SCSI and NVMe, but I'm not sure if SCSI is exclusive to HDDs.
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