QUESTION: 21

Which two backend switches support 100 GbE?

DCS-7308
S5232-ON
29264-ON
D4040

Answer(s): B,C

Explanation:

The two backend switches that support 100 GbE are:
B . S5232-ON
C . Z9264-ON

Dell EMC Networking S5232-ON:
Features:
A 1U high-density switch with 32 ports of 100 GbE QSFP28. Supports 10/25/40/50/100 GbE speeds through breakout cables.
Use Cases:
Ideal for high-performance backend networks in PowerScale clusters.
Dell EMC Networking Z9264-ON:
Features:
A 2U switch offering 64 ports of 100 GbE QSFP28.
Provides extensive scalability for large network deployments.
Use Cases:
Suitable for large-scale PowerScale clusters requiring extensive bandwidth.
Why Options A and D Are Incorrect:
A . DCS-7308:

The DCS-7300 series is modular and may support 40/100 GbE, but it's not commonly associated with PowerScale backend networks.
Not a standard recommendation for PowerScale deployments.
D . D4040:
The Dell Networking D4040 is a 40 GbE switch, not supporting 100 GbE natively.
Does not meet the requirement for 100 GbE support.
Dell PowerScale Reference
Dell EMC PowerScale Network Design Considerations:
Discusses recommended switches for backend networking, including 100 GbE options.
Switch Specification Sheets:
S5232-ON Data Sheet:
Details port configurations and capabilities.

Z9264-ON Data Sheet:
Provides specifications and deployment scenarios.
Dell EMC Best Practices Guide:
Recommends network hardware compatible with PowerScale clusters.

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QUESTION: 22

What must be replaced at the same time the backup battery is replaced?

M.2 card and backup battery
Both NIC cards
Riser card

Answer(s): A

Explanation:

When replacing the backup battery in a Dell PowerScale node, it is mandatory to replace the M.2 card at the same time. The M.2 card, which acts as a boot device and stores critical system information, works in conjunction with the backup battery to ensure data integrity.

Role of the Backup Battery:
Data Protection:
Provides power to preserve data in cache during a power loss.
Supports NVRAM Operations:
Ensures that any unwritten data is safely stored until power is restored.
Importance of the M.2 Card:
Boot Device:
Contains the OneFS operating system boot partition.
Data Logging:
Stores logs and system configuration data.
Simultaneous Replacement Requirement:
Interdependent Components:
The backup battery and M.2 card are designed to work together.
Preventive Maintenance:
Replacing both reduces the risk of future failures.
Firmware Compatibility:

Ensures both components are updated and compatible.
Procedure:
Shut Down the Node:
Safely power down the node before replacement.
Replace Both Components:
Remove the old backup battery and M.2 card.
Install the new components.
Reboot and Verify:
Power on the node and confirm normal operation.
Why Other Options Are Incorrect:
B . Both NIC cards:
NICs do not need to be replaced when replacing the backup battery.
C . Riser card:
The riser card is unrelated to the backup battery and does not require replacement in this context.
Dell PowerScale Reference
Dell EMC PowerScale Field Replacement Unit (FRU) Procedure Guide:
Specifies that the backup battery and M.2 card must be replaced together.
Maintenance Best Practices:
Emphasize the importance of replacing interdependent components.
Hardware Owner's Manual:
Provides step-by-step instructions for replacing the backup battery and M.2 card.

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QUESTION: 23

An engineer replaced a failed node in a PowerScale H500 due to hardware issues. They must verity that the replacement node is functioning correctly.
What is a crucial step when replacing the failed node in the cluster?

Run a diagnostic test on the replacement node.
Confirm that the replacement node inherits the old serial number from the cluster.
Verify the size of the storage capacity of the replacement node.
Power on the replacement node and ensure it connects to the network without any problems.

Answer(s): A

Explanation:

After replacing a failed node in a PowerScale H500 cluster, it is crucial to run a diagnostic test on the replacement node to ensure it is functioning correctly and can integrate seamlessly into the cluster.

Importance of Diagnostics:
Verify Hardware Functionality:
Ensures all components of the replacement node are working properly.
Identify Potential Issues:
Detects any hardware faults or configuration problems before the node joins the cluster.
Diagnostic Procedures:
Boot Diagnostics:
During startup, the node performs POST (Power-On Self-Test).
OneFS Healthcheck:

Use the isi diagnostics commands to run health checks on the node.
Cluster Integration Tests:
Verify network connectivity, storage availability, and cluster communication.
Steps to Run Diagnostics:
Physical Inspection:
Ensure all cables and components are properly connected.
Power On the Node:
Observe for any error lights or beep codes.
Execute Diagnostic Commands:
Run isi_hw_status to check hardware status.
Use isi_diag tools for comprehensive testing.
Review Logs:

Check system logs for any error messages.
Why Other Options Are Less Crucial:
B. Confirm that the replacement node inherits the old serial number from the cluster:
Serial numbers are hardware-specific and cannot be inherited. Nodes have unique serial numbers; cluster identity is managed logically. C. Verify the size of the storage capacity of the replacement node:
While important, it's generally assumed that the replacement node matches the failed node's specifications.
Not as crucial as ensuring the node functions correctly. D. Power on the replacement node and ensure it connects to the network without any problems:
Necessary, but this is part of the diagnostic process. Running diagnostics encompasses powering on and verifying network connectivity.
Dell PowerScale Reference
Dell EMC PowerScale OneFS Administration Guide:
Provides information on monitoring and diagnostics commands.
Node Replacement Procedures in SolVe Online:
Outline the steps for replacing nodes and the importance of running diagnostics.
Best Practices for Cluster Maintenance:
Emphasize verifying node health before adding it to the cluster.

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QUESTION: 24

What status is an engineer trying to test if they run the isi_hwmon -s command?

DIMM
Sensor
CPU
Battery
System

Answer(s): B

Explanation:

The command isi_hwmon -s is used on Dell PowerScale systems to display the status of various hardware sensors within a node. This command helps engineers monitor and test the operational status of different sensors that report on hardware conditions such as temperature, voltage, fan speeds, and other critical environmental parameters.

Purpose of isi_hwmon Command:
The isi_hwmon utility is a hardware monitoring tool specific to Dell PowerScale (formerly Isilon) systems.
It provides real-time data and status of hardware components via sensors.
Understanding the -s Option:
The -s flag with isi_hwmon stands for "sensors."
Running isi_hwmon -s lists the current readings and status of all hardware sensors in the node. This includes temperature sensors, voltage sensors, fan speed sensors, and more.
Use Cases:
Monitoring System Health:

Engineers use this command to ensure that all hardware components are operating within normal parameters.
Troubleshooting:
Helps in diagnosing issues related to overheating, power supply fluctuations, or fan failures.
Preventive Maintenance:
Regular checks can prevent hardware failures by identifying abnormal readings early.
Sample Output:
The command outputs a list of sensors along with their current readings and status indicators (e.g., OK, Warning, Critical).
Why Other Options Are Incorrect:

A . DIMM:
While isi_hwmon can display information about memory modules, the -s option specifically targets sensors, not DIMMs directly.

C . CPU:
CPU status may be part of sensor readings (like temperature), but the command focuses on sensors rather than the CPU as a standalone component.

D . Battery:
Battery status can be monitored, but again, it falls under the umbrella of sensor data.

E . System:
The term "System" is too broad; isi_hwmon -s specifically targets sensor data.
Dell PowerScale Reference
Dell EMC PowerScale OneFS Command-Line Reference Guide:
Provides detailed information on the isi_hwmon command and its options.
Dell EMC PowerScale OneFS Administration Guide:
Discusses hardware monitoring and the importance of sensor data in maintaining system health.
Knowledge Base Articles:
Articles detailing how to interpret sensor data and troubleshoot hardware issues using isi_hwmon.

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Free D-PSC-MN-01 Exam Braindumps (page: 6)

QUESTION: 21

Explanation:

QUESTION: 22

Explanation:

QUESTION: 23

Explanation:

QUESTION: 24

Explanation: