OceanStor Dorado V6 4U Enclosure Power Module Count
Short answer
B A 4U controller enclosure of the OceanStor Dorado V6 contains four power modules (PSU 0-3), not just two.
Question
Key Takeaways
The exam tests your knowledge of specific hardware chassis configurations; confusing the number of power planes (2) with the number of physical power supply units (4) leads to the wrong answer.
This page explains why the statement about the OceanStor Dorado V6 4U controller enclosure having only two power modules is false, clarifying the correct hardware configuration of four PSUs.
Common mistake: Candidates often select TRUE because they recall that there are two redundant power planes but forget that each plane consists of multiple physical power modules, totaling four per 4U enclosure.
Expert Analysis
The OceanStor Dorado V6 high-end storage system is designed with maximum availability in mind, which extends to its power architecture. The question specifically refers to a 4 U controller enclosure. According to Huawei's hardware specifications for the Dorado V6 series (such as the 8000 or 18000 models), a single 4U controller enclosure contains four Power Supply Units (PSUs), not two.
These four PSUs are typically labeled PSU 0, PSU 1, PSU 2, and PSU 3. They are configured into two independent power planes to ensure redundancy:
- Power Plane A: Composed of PSU 0 and PSU 1.
- Power Plane B: Composed of PSU 2 and PSU 3.
Each plane supplies power to specific controllers within the enclosure (e.g., Controller A and C might be fed by Plane A, while Controller B and D are fed by Plane B). While PSU 0 and PSU 1 do form a power plane, the statement that the entire enclosure has only two power modules is factually incorrect because it ignores PSU 2 and PSU 3. Therefore, the premise that there are only two PSUs in the enclosure is false.
Community comments correctly highlight this discrepancy, noting that the 4U enclosure houses four PSUs arranged in a redundant configuration. Misidentifying the number of PSUs is a common trap in storage hardware certification exams, where candidates must distinguish between the number of power planes (which may be two) and the total number of physical power modules (which is four in a fully populated 4U enclosure).
Official Reference
https://support.huawei.com/enterprise/en/doc/EDOC1100275690
This link opens the official vendor documentation in a new tab.
Exam Strategy
When studying storage hardware specifications, always differentiate between logical components (like power planes or RAID groups) and physical components (like individual drives or PSUs). For high-end enclosures, memorize the exact count of redundant units per chassis size (e.g., 2U vs 4U) to avoid traps that swap these numbers.
Frequently Asked Questions
How many power modules are in a Dorado V6 4U controller enclosure?
How are the PSUs configured in the Dorado V6?
Community Votes
100% of anonymous learners picked answer B. Votes are pick records left by other test-takers — they are not the verified answer.
Discussion 2 contributions
Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.
From public community threads 2
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DUKSCO 👍 1 Answered BKey Technical DetailsPower Module Count: A 4U controller enclosure of the OceanStor Dorado V6 series (such as the Dorado 8000 V6 or 18000 V6) houses four AC/DC Power Supply Units (PSUs)—PSU 0, PSU 1, PSU 2, and PSU 3—rather than just two.Redundancy Plane: The four PSUs are split into two redundant power planes (Plane A and Plane B) operating in $2+2$ redundancy mode (or $3+1$ depending on load configuration). This ensures full high availability even if an entire power plane or multiple PSUs fail.
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10c5cfe 👍 1 Answered Bfrom huawei documentation: A 4 U controller enclosure has four power modules (PSU 0, PSU 1, PSU 2, and PSU 3). PSU 0 and PSU 1 form a power plane to supply power to controllers A and C, and are redundant of each other. PSU 2 and PSU 3 form the other power plane to supply power to controllers B and D, and are redundant of each other. For reliability purposes, it is recommended that you connect PSU 0 and PSU 2 to one PDU, and PSU 1 and PSU 3 to another PDU.
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