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EMC Dell PowerScale Maintenance Exam Sample Questions (Q53-Q58):

NEW QUESTION # 53
A platform engineer is at a customer site to replace a failed Dell EMC PowerScale Gen 6 node. After removing the compute module, they observe lit LEDs inside the removed node.
What is the recommended response?

  • A. This is not normal; they need to shut down the partner node.
  • B. The node is not yet completely shut down; they should wait.
  • C. This is normal; they should continue with the procedure.
  • D. There is an internal electrical fault; they should call support.

Answer: C

Explanation:
When a platform engineer removes the compute module from a Dell EMC PowerScale Gen 6 node and observes lit LEDs inside the removed node, this is a normal behavior due to the design of the node's power and indicator systems.
Reasons Why LEDs Remain Lit:
* Residual Power:
* The node's capacitors may hold residual power for a short time after shutdown, keeping LEDs lit temporarily.
* Shared Power Supplies:
* In Gen 6 nodes, power supplies may be shared between paired nodes, and some components might still receive power.
Recommended Response:
* Proceed with the Procedure:
* The lit LEDs are expected and do not indicate a fault.
* The engineer should continue with the replacement procedure as per the guidelines.
Dell PowerScale References:
* Dell EMC PowerScale Hardware Replacement Guide:
* Section on Compute Module Replacement:
* Notes that internal LEDs may remain lit after removal.
* Confirms that this is normal and does not require additional action.
* Safety Precautions:
* Always ensure proper ESD protection when handling components.
* Follow all recommended steps to safely replace hardware.


NEW QUESTION # 54
Which aspect is crucial when cabling nodes in a PowerScale installation?

  • A. Documenting the cabling layout
  • B. Verifying cable integrity with testing tools
  • C. Ensuring cables are of the minimum required length
  • D. Using color-coded cables for easy identification

Answer: A


NEW QUESTION # 55
What can be viewed using the isi_upgrade_logs _s command?

  • A. Current upgrade state
  • B. Post upgrade errors
  • C. Upgrade assessment results
  • D. Active upgrade errors

Answer: A

Explanation:
The isi_upgrade_logs -s command is used to view thecurrent upgrade stateof a Dell PowerScale cluster during an upgrade process. This command provides real-time status information about the upgrade's progress.
* Understanding isi_upgrade_logs:
* A utility in OneFS that displays logs and status information related to cluster upgrades.
* Helps administrators monitor and troubleshoot the upgrade process.
* Using the -s Option:
* The -s flag stands for "status."
* When used with isi_upgrade_logs, it displays the current state of the upgrade, including which nodes have been upgraded, which are pending, and any ongoing activities.
* Information Provided by the Command:
* Upgrade Phases:
* Shows which phase the upgrade is in (e.g., pre-checks, package installation, post-checks).
* Node Status:
* Indicates the status of each node (e.g., upgraded, in progress, pending).
* Overall Progress:
* Provides percentage completion and estimated time remaining.
* Why Other Options Are Less Suitable:
* A. Post upgrade errors:
* While isi_upgrade_logs can display errors, the -s option specifically shows the current state, not post-upgrade errors.
* C. Active upgrade errors:
* Error logs can be viewed using different options, such as isi_upgrade_logs -e, but -s focuses on status, not errors.
* D. Upgrade assessment results:
* Upgrade assessments are performed prior to the upgrade using tools like isi upgrade cluster assess.
* Results are not viewed with isi_upgrade_logs -s.
* Monitoring Upgrade Progress:
* Regular Checks:
* Administrators should regularly run isi_upgrade_logs -s during an upgrade to monitor progress and identify any issues early.
* Example Output:
* The command outputs a table or list detailing the status of each node and the overall upgrade progress.
Dell PowerScale References:
* Dell EMC PowerScale OneFS Upgrade Planning and Process Guide:
* Provides detailed instructions on performing upgrades and monitoring their progress.
* Dell EMC PowerScale OneFS Upgrade Guide
* OneFS CLI Administration Guide:
* Contains information on isi_upgrade_logs and other upgrade-related commands.
* Dell EMC PowerScale OneFS CLI Guide
* Knowledge Base Articles:
* Article ID 000034567:"Monitoring Cluster Upgrades Using isi_upgrade_logs"
* Article ID 000089012:"Interpreting Upgrade Status and Logs in OneFS"


NEW QUESTION # 56
A platform engineer has created a cluster of 8 F200 nodes. A requirement is for each power supply on each node to supply power to the respective node equally.
What must the platform engineer do to meet the requirement?

  • A. Cable each node power connection to a different PDU in the rack
  • B. Run the isi set -n command to change the power supply behavior
  • C. Use the iDRAC settings on each node to disable the hot spare feature
  • D. Run the isi config and change the settings in the config subsystem

Answer: C

Explanation:
By default, the Power Supply Hot Spare feature may cause one power supply to run while the other is idle.
Steps to Ensure Equal Power Supply Loading:
* Access iDRAC Interface:
* Log into the iDRAC for each F200 node.
* Disable Hot Spare Feature:
* Navigate to Power Management settings.
* Disable the Power Supply Hot Spare option.
* Result:
* Both power supplies will share the load equally.
Dell PowerScale References:
* Dell EMC PowerScale F200 Hardware Guide:
* Power Supply Configuration:
* Instructions on adjusting power supply settings via iDRAC.
* Best Practices:
* Ensure redundancy by connecting power supplies to separate PDUs.
* Monitor power usage to confirm balanced loading.


NEW QUESTION # 57
What is a consideration when reimaging a Dell PowerScale node?

  • A. Reimaging does not erase the data and is faster.
  • B. Perform on a node that Is a member of a cluster.
  • C. Use the rolling reimage update to retain the current OneFS version.
  • D. Perform on a node mat is not a member of a cluster.

Answer: D

Explanation:
When reimaging a Dell PowerScale node, an important consideration is toperform the reimage on a node that is not a member of a cluster. Reimaging a node that is part of a cluster can lead to data loss and cluster instability. Therefore, the recommended practice is to remove the node from the cluster before initiating the reimage process.
1. Understanding Reimaging:
* Reimaging Process:
* Reimaging involves reinstalling the OneFS operating system on a node.
* It effectively returns the node to a factory-default state.
* All data and configurations on the node are erased during the process.
* Purpose of Reimaging:
* Used to address software corruption, persistent errors, or to prepare a node for redeployment.
2. Importance of Performing Reimage on a Non-Clustered Node:
* Data Protection:
* Reimaging a node within a cluster can disrupt data protection schemes.
* The node's data may not be fully replicated elsewhere, risking data loss.
* Cluster Integrity:
* Removing the node ensures that the cluster remains stable and avoids potential conflicts.
* The cluster's metadata and configuration remain consistent.
* Recommended Procedure:
* Step 1:Remove the node from the cluster using the appropriate OneFS commands or the WebUI.
* Step 2:Confirm that the cluster recognizes the node removal and data has been reprotected.
* Step 3:Proceed with reimaging the node.
3. Why Other Options Are Less Suitable:
* Option B: Reimaging does not erase the data and is faster.
* Incorrect; reimaging erases all data and configurations on the node.
* It is not necessarily faster and involves careful steps to ensure data integrity.
* Option C: Perform on a node that is a member of a cluster.
* Not recommended due to risks of data loss and cluster instability.
* Best practices dictate removing the node first.
* Option D: Use the rolling reimage update to retain the current OneFS version.
* There is no "rolling reimage update" process.
* Rolling upgrades are for updating OneFS versions, not reimaging nodes.
4. Dell PowerScale Best Practices:
* Node Removal Before Reimaging:
* Always remove the node from the cluster before reimaging.
* Ensure the cluster is healthy and data is fully protected.
* Backup Critical Data:
* Verify that critical data is backed up or replicated.
5. Dell PowerScale References:
* Dell EMC PowerScale OneFS Administration Guide:
* Provides instructions on managing nodes and reimaging procedures.
* Dell EMC PowerScale OneFS Administration Guide
* Dell EMC PowerScale OneFS CLI Administration Guide:
* Details commands for removing nodes and reimaging.
* Dell EMC PowerScale OneFS CLI Guide
* Knowledge Base Articles:
* Article ID 000180125:"Best Practices for Reimaging PowerScale Nodes"
* Article ID 000180126:"Procedures for Safely Reimaging a Node"


NEW QUESTION # 58
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