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Network Appliance NetApp Accredited Hardware Support Engineer Sample Questions (Q60-Q65):

NEW QUESTION # 60
A SAS connection is reporting a single PHY down.
What are the two most likely causes? (Choose two.)

A. defective cable
B. an offline shelf in the stack
C. outdated I/O module (IOM1 firmware
D. improperly seated cable

Answer: A,D

Explanation:
Understanding a Single PHY Down Issue:
* In SAS environments, a PHY represents a physical layer connection between devices.
* When a single PHY reports a "down" status, it typically indicates an issue with the physical connectivity or the associated hardware.
Cause 1: Improperly Seated Cable
* If the SAS cable is not properly seated in the port, the connection for one or more PHYs may fail.
* Reseating the cable on both ends (controller and shelf) often resolves the issue.
Cause 2: Defective Cable
* A damaged or faulty SAS cable can cause PHY errors.
* Replacing the cable and verifying the connection resolves the issue in this case.
Why Other Options Are Not Likely:
* B. Outdated IOM firmware: While outdated firmware can cause other issues, it rarely affects only a single PHY.
* D. Offline shelf: If an entire shelf is offline, more than one PHY would typically be affected, as multiple connections are involved in SAS stacks.
NetApp Reference Documentation:
* Found in the "ONTAP SAS Cabling Guide" and "Shelf Troubleshooting Guide". These documents detail troubleshooting for PHY errors and common SAS hardware issues.

NEW QUESTION # 61
When you add a new disk to an ONTAP 9.1 system, you see an error that the disk "has raid label with version (16), which is not within the currently supported range (14-15)." What is one possible cause of this error?

A. The disk is a non-zeroed spare.
B. The disk was in a system with a newer version of ONTAP software
C. The disk firmware is too new for ONTAP software.
D. The disk needs to be assigned to the new system.

Answer: B

Explanation:
Explanation of RAID Label Versions:
* Disks in ONTAP systems contain metadata known as RAID labels. These labels store critical information such as ownership, aggregate membership, and versioning.
* The error indicates a mismatch between the RAID label version on the disk and the supported versions of the ONTAP system.
Why Option D Is Correct:
* If a disk has a RAID label created by a newer version of ONTAP (e.g., version 16) and is then inserted into a system running an older version of ONTAP (e.g., supporting versions 14-15), the label will not be recognized.
* This mismatch causes ONTAP to reject the disk.
Resolution:
* Upgrade the ONTAP version to match the RAID label on the disk.
* Alternatively, zero the disk to reset its RAID label, but this will erase all data on the disk.
NetApp Reference Documentation:
* The "ONTAP Disk Management Guide" and "ONTAP Compatibility Matrix" explain RAID label versions and compatibility issues when moving disks between ONTAP systems.

NEW QUESTION # 62
An aggregate has experienced a multiple disk failure due to a failing I/O module (IOM). The module has been replaced and the aggregate is still failed.
What step can be taken to recover the aggregate?

A. Unfail the drives in the order that they failed from the clustershell
B. Run wafliron from the boot_menu.
C. Unfail the drives from maintenance mode.
D. Use diskcopy from maintenance mode.

Answer: C

Explanation:
When an aggregate fails due to multiple disk failures caused by a faulty I/O module (IOM), the first step after replacing the faulty IOM is to manually unfail the affected drives. This process is done in maintenance mode.
* Enter Maintenance Mode:
* Reboot the node and interrupt the boot process to access maintenance mode.
* Identify Failed Drives:
* Use the command:
Steps to Recover the Aggregate:sql
Copy code
storage show disk -broken
This command lists all failed (broken) drives.
* Unfail the Drives:
* Use the following command for each failed drive:
php
Copy code
disk unfail <disk-name>
* Reconstruct the Aggregate:
* Once all drives are unfail, the system should begin reconstructing the RAID groups in the aggregate.
* A. Use diskcopy from maintenance mode:
* Diskcopy is used for cloning or copying data between disks, not for recovering failed aggregates.
* B. Run wafliron from the boot_menu:
* wafliron is used to repair WAFL inconsistencies, but it does not help recover failed aggregates due to disk issues.
* D. Unfail the drives in the order that they failed from the clustershell:
* Drives must be unfail in maintenance mode, not from the clustershell.
Why Other Options Are Incorrect:
* NetApp's "Aggregate and RAID Troubleshooting Guide" explains the process of recovering aggregates and using maintenance mode commands.
* "ONTAP Disk Recovery Guide" outlines steps to unfail disks and recover RAID groups.
References:

NEW QUESTION # 63
You have upgraded your cluster from ONTAP 9.5 software to ONTAP 9.7 software. After two days, you notice that the upgrade is causing issues. You decide to revert to ONTAP 9.5 software.
Which two actions do you need to complete before you revert? (Choose two.)

A. Delete all Snapshot copies from the past two days.
B. Wipe your config and restore from backup.
C. Reinstall your boot media and install ONTAP 9.5 software.
D. Revert from ONTAP 9.7 software to ONTAP 9.6 software and then to ONTAP 9.5 software.

Answer: B,C

Explanation:
Reverting to a previous ONTAP version requires careful preparation because ONTAP upgrades often introduce irreversible changes. To successfully revert, the following actions are needed:
* C. Reinstall your boot media and install ONTAP 9.5 software
* Explanation:You need to reinstall the older version of ONTAP (9.5) on the boot media because the current version (9.7) has been installed as part of the upgrade. The reinstallation ensures that the system boots with ONTAP 9.5.
* Steps:
* Boot the node into maintenance mode.
* Perform the reinstallation using the appropriate ONTAP 9.5 image.
* D. Wipe your config and restore from backup
* Explanation:A revert requires wiping the configuration because ONTAP upgrades may have made changes to the cluster configuration or WAFL metadata. Restoring the configuration from a backup ensures consistency with the older ONTAP version.
* Steps:
* Back up the current cluster configuration before proceeding.
* Use the restored backup after the revert is complete to reconfigure the system.
Why the Other Options Are Incorrect:
* A. Revert from ONTAP 9.7 software to ONTAP 9.6 software and then to ONTAP 9.5 software:
* Incorrect. ONTAP reverts must directly target the desired version. You cannot perform multi-step reverts.
* B. Delete all Snapshot copies from the past two days:
* Incorrect. Deleting Snapshot copies is not a prerequisite for reverting ONTAP. While older Snapshot copies might not be compatible with the reverted version, they do not need to be deleted before the revert.
References:
* NetApp Documentation: ONTAP Upgrade and Revert Procedures.
* NetApp Knowledge Base: Steps for reinstallation and configuration restoration during a revert.

NEW QUESTION # 64
Which two commands confirm whether an aggregate is WAFL inconsistent? (Choose two.)

A. node run -node <node> sysconfig -a
B. wafiron show <aggregate>
C. node run -node <node> sysconfig -r
D. storage aggregate show

Answer: B,C

Explanation:
To determine whether an aggregate is WAFL (Write Anywhere File Layout) inconsistent, the following two commands can be used:
* What it does:This command directly checks the WAFL consistency status of the specified aggregate. If an aggregate is WAFL inconsistent, it will report the inconsistency in the output.
* How to use:
* Run the command: wafiron show <aggregate> (replace <aggregate> with the name of the aggregate).
* Look for indications of WAFL inconsistency in the output.
* Why it's relevant:The wafiron utility is specifically designed to provide WAFL status and diagnostics.
It is the most accurate and direct way to confirm whether an aggregate is inconsistent.
* References:
* "WAFL Troubleshooting Guide" from NetApp highlights the wafiron show command as a primary tool for checking aggregate consistency.
1. wafiron show <aggregate>
* What it does:This command displays RAID information for all aggregates on the specified node. If an aggregate is WAFL inconsistent, it will be explicitly mentioned in the output.
* How to use:
* Run the command: node run -node <node> sysconfig -r.
* Check the output for the phrase "WAFL inconsistent" under the corresponding aggregate.
* Why it's relevant:This command provides additional context, such as the RAID group details, which can help understand whether the inconsistency is isolated or part of a larger issue.
* References:
* "ONTAP CLI Commands Guide" specifies sysconfig -r as a method to verify aggregate status, including WAFL consistency.
2. node run -node <node> sysconfig -r
* C. storage aggregate show:
* This command displays aggregate configuration and usage information but does not report WAFL inconsistency.
* D. node run -node <node> sysconfig -a:
* While this command shows detailed hardware configuration information, it does not include WAFL consistency status for aggregates.
Why Other Options Are Incorrect:

NEW QUESTION # 65
......

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Network Appliance NetApp Accredited Hardware Support Engineer Sample Questions (Q60-Q65):

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