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EMC D-PSC-MN-01 Exam Syllabus Topics:

Topic
Details

Topic 1

PowerScale Hardware Concepts: This part of the exam assesses the expertise of IT infrastructure architects, and emphasizes the ability to differentiate between the architectural elements of PowerScale platforms, understand their specific use cases, and compare design specifications across PowerScale hardware models.

Topic 2

PowerScale Hardware Installation: This section evaluates the installation capabilities of hardware engineers to test candidates on their ability to plan and execute the installation of PowerScale hardware, prepare the maintenance site, and adhere to best practices when installing racks, nodes, and related components.

Topic 3

PowerScale Hardware Maintenance: Targeted at system administrators, this section focuses on key tasks involved in maintaining PowerScale hardware. It examines candidates' proficiency in completing initial maintenance steps, preparing nodes for operation, and processing Field Replaceable Unit (FRU) and Customer Replaceable Unit (CRU) requests.

Topic 4

PowerScale Implementation: Geared towards cluster administrators, this section covers the practical aspects of implementing PowerScale systems. It focuses on creating new clusters, integrating nodes into existing clusters, and applying alternative configurations or accessories to improve performance.

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EMC Dell PowerScale Maintenance Exam Sample Questions (Q143-Q148):

NEW QUESTION # 143
When a platform engineer disconnects and removes the power supply from a Dell EMC PowerScale Gen 6 node, they see an LED on the inside of the compute module.
What does the LED indicate?

A. Pair node is supplying redundant power.
B. Power supply was not removed correctly and the node is shutting down.
C. Visible LED is from the front panel of the node.
D. Platform engineer has exactly two minutes to swap the power supply.

Answer: A

Explanation:
In Dell EMC PowerScale Gen 6 nodes, such as the ones in the F-series, nodes are deployed in pairs within a chassis, sharing power supplies for redundancy.
Key Points:
* LED Indicator Inside Compute Module:
* When a power supply is removed from one node, an LED inside the compute module may illuminate.
* This LED indicates that the node is still receiving power from its pair node's power supply, ensuring continuous operation.
* Redundant Power Supply:
* PowerScale Gen 6 nodes are designed with redundant power configurations.
* If one power supply fails or is removed, the paired node's power supply provides power to both nodes.
* Safe Removal and Replacement:
* The LED serves as a visual indicator that the node is still powered, and caution should be exercised when handling components.
* There is no immediate shutdown or time limit for replacing the power supply due to the redundancy.
Dell PowerScale References:
* Dell EMC PowerScale Hardware Installation Guide:
* Chapter on Power Supply Replacement:
* Explains the redundant power features and the role of the pairing between nodes.
* Provides instructions on safely removing and replacing power supplies.
* Visual Indicators:
* Details the meaning of LEDs within the compute module.
* Confirms that an illuminated LED in this context indicates redundant power from the pair node.
* Best Practices:
* Always verify the node's power status before performing maintenance.
* Use the proper procedures to remove and replace hardware components to prevent damage.

NEW QUESTION # 144
What should the platform engineer pre-check when installing Dell EMC PowerScale Gen 6 nodes in a customer-provided rack?

A. PDUs are located on opposite sides of the rack
B. Rack has a minimum of two PDUs
C. Rack is leveled using the front legs first and the rear legs second
D. Rack has full earth ground and is properly bolted to the floor

Answer: D

Explanation:
When installing Dell EMC PowerScale Gen 6 nodes in a customer-provided rack, it is crucial for the platform engineer to ensure that the rack meets all safety and installation requirements. One of the most critical pre- checks is verifying that the rack has a full earth ground and is properly bolted to the floor.
Key Points:
* Full Earth Ground:
* Ensures electrical safety by providing a path for fault currents.
* Protects equipment and personnel from electrical hazards.
* Reduces the risk of electrical interference affecting the equipment.
* Properly Bolted to the Floor:
* Provides physical stability to prevent the rack from tipping over.
* Essential for seismic compliance in areas prone to earthquakes.
* Prevents movement due to vibrations from equipment operation or external factors.
Why This is Important:
* Safety Compliance:
* Adhering to safety standards is mandatory to prevent accidents.
* Electrical grounding is a fundamental requirement for data center equipment installations.
* Equipment Protection:
* Proper grounding and securing the rack protect sensitive equipment from damage.
* Minimizes downtime caused by electrical faults or physical disturbances.
Why Other Options Are Less Critical:
* Option A (PDUs on Opposite Sides):
* While distributing PDUs can aid in power redundancy and cable management, it is not as critical as grounding and securing the rack.
* Option B (Rack Leveling):
* Leveling the rack is important for equipment alignment but is a standard step during installation rather than a pre-check.
* Option D (Minimum of Two PDUs):
* Having multiple PDUs provides redundancy but depends on the power requirements and design of the system.
Dell PowerScale References:
* Dell EMC PowerScale Site Preparation and Planning Guide:
* Section on Rack Requirements:
* Emphasizes that customer-provided racks must be properly grounded and secured.
* States that racks should be bolted to the floor to prevent tipping.
* Safety Precautions:
* Details the importance of electrical grounding for safety and equipment protection.
* Best Practices:
* Before Installation:
* Verify that the rack complies with all local electrical codes and regulations.
* Ensure that a qualified electrician has installed the grounding system.
* During Installation:
* Check that all grounding connections are secure.
* Confirm that the rack is level and stable after bolting it to the floor.
* After Installation:
* Perform an electrical continuity test to verify proper grounding.
* Document the installation for future reference and compliance audits.

NEW QUESTION # 145
What does the process of smartfailing a node involve?

A. Temporarily removing the node from service
B. Physically replacing the node hardware
C. Updating the cluster configuration database
D. Transferring data to other nodes in the cluster

Answer: A

NEW QUESTION # 146
Which two rack solutions can support H500. H5600 and H700 models?

A. Titan HD
B. Third-Party Racks
C. Titan A
D. Titan D

Answer: A,D

Explanation:
The two rack solutions that can support Dell PowerScale modelsH500,H5600, andH700are:
* B. Titan D
* C. Titan HD
* Dell EMC Titan Racks Overview:
* Titan D (Depth):
* Designed for standard-depth nodes like the H500 and H700.
* Accommodates nodes with typical depth requirements.
* Provides necessary power and cooling for these models.
* Titan HD (High Density):
* Built for high-density storage solutions.
* Suitable for nodes like the H5600, which have larger physical dimensions due to increased storage capacity.
* Supports the weight and size of high-capacity nodes.
* Compatibility with H-Series Models:
* H500 and H700:
* Fit within standard rack dimensions.
* Require racks that can handle their power and cooling needs.
* Supported by Titan D and Titan HD.
* H5600:
* Larger and heavier due to high-density storage drives.
* Requires racks designed to support increased depth and weight.
* Supported by Titan HD.
* Conclusion:
* Both Titan D and Titan HD racks are capable of housing these models, making them the correct choices.
* Why Other Options Are Less Suitable:
* A. Titan A:
* There is no commonly known "Titan A" rack in Dell's PowerScale solutions.
* May refer to an outdated or incorrect rack designation.
* D. Third-Party Racks:
* While third-party racks might physically support the nodes, Dell recommends using their certified racks to ensure proper fit, cooling, and power distribution.
* Using uncertified racks could lead to warranty issues or inadequate environmental support.
* Benefits of Using Titan D and Titan HD Racks:
* Optimized Cooling:
* Designed to provide adequate airflow for Dell PowerScale nodes.
* Power Distribution:
* Equipped with PDUs (Power Distribution Units) suitable for the power requirements of the nodes.
* Structural Support:
* Built to handle the weight and dimensions of the nodes safely.
Dell PowerScale References:
* Dell EMC PowerScale Site Preparation and Planning Guide:
* Details on rack requirements, specifications, and supported models.
* Dell EMC PowerScale Site Preparation Guide
* Dell EMC PowerScale Hardware Specifications:
* Provides physical dimensions and weight of the H500, H5600, and H700 nodes.
* Dell EMC PowerScale Hardware Specs
* Knowledge Base Articles:
* Article ID 000345678:"Recommended Racks for PowerScale H-Series Nodes"
* Article ID 000345679:"Titan D and Titan HD Rack Compatibility with PowerScale Models"

NEW QUESTION # 147
A customer has a Dell PowerScale Gen 6 cluster that is using an Ethernet backend. They have Gen 5 nodes and cables from a previous installation. A PowerScale platform engineer is on site. The customer asks the engineer if they can repurpose the Gen 5 equipment on their Gen 6 cluster.
What should the engineer advise the customer?

A. Order new cables with the right connectors
B. An InfiniBand switch must be paired with the Gen 6 back-end Ethernet switches to allow the Gen 5 nodes to join
C. Gen 5 nodes cannot be joined to a cluster with Gen 6 nodes running an Ethernet backend
D. Daisy chain the Gen 5 backend by InfiniBand cables, then plug them directly to the Gen 6 primary node

Answer: C

NEW QUESTION # 148
......

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