NetApp NS0-093 NetApp Accredited Hardware Support Engineer Exam Practice Test

Answer : B

To confirm the successful completion of an ONTAP upgrade, the cluster image show-update-progress command provides the necessary details.

Key Command:

Command:

cluster image show-update-progress

Displays the status of the cluster upgrade, including which nodes have successfully upgraded and whether the process has completed.

Why Other Options Are Incorrect:

A . system controller sp upgrade show:

This command displays information about SP (Service Processor) firmware upgrades, not ONTAP upgrades.

C . job show --jobtype upgrade:

While this command shows upgrade jobs, it does not confirm the completion of the cluster-wide ONTAP upgrade.

D . system node upgrade-revert upgrade-task --node <nodename> --version <ontap Version>:

This command reverts an upgrade task, not confirms completion.

NetApp 'ONTAP Upgrade Guide' specifies the cluster image show-update-progress command as the primary method to verify upgrade completion.

Answer : A, C

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 Outdated IOM firmware: While outdated firmware can cause other issues, it rarely affects only a single PHY.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.

Answer : A, B

A . NVMEM battery

Explanation: The NVMEM (Non-Volatile Memory) battery is a critical component for retaining data in case of a power failure. It is classified as a Field Replaceable Unit (FRU) in an AFF A220 system.

Replacement Notes:

Replacement can be performed by field engineers.

The system will typically alert you when the battery requires replacement.

B . mSATA boot device

Explanation: The mSATA (mini-SATA) boot device contains the ONTAP operating system and is also a FRU in the AFF A220. It is critical for the system's boot process and can be replaced if it becomes faulty.

Replacement Notes:

Boot devices are easily replaceable while ensuring ONTAP is reinstalled on the new device.

Why the Other Options Are Incorrect:

C . NVMe Flash Cache feature:

Incorrect. NVMe Flash Cache is not a physical FRU but a feature for accelerating read performance. It is implemented via software and NVMe-based SSDs, which are not specifically field replaceable in AFF A220.

D . Chassis fan:

Incorrect. The AFF A220 does not classify chassis fans as FRUs. These are usually part of the cooling system, but their replacement may require system shutdown or is integrated into the design.

NetApp Hardware Documentation: AFF A220 Component Replacement Guide.

NetApp Knowledge Base: Articles on replacing NVMEM batteries and mSATA boot devices.

Answer : A

A NetApp WAFL (Write Anywhere File Layout) inconsistency in a RAID-DP aggregate could occur in the following scenarios:

1. Two disks failing and a block error during reconstruction

Why this causes inconsistency:

RAID-DP is designed to handle up to two concurrent disk failures. However, if a block error occurs during the reconstruction process (e.g., unreadable data on the surviving disks), the RAID group cannot rebuild the lost data, leading to WAFL inconsistencies.

2. Two disks failing within seconds of each other

Why this causes inconsistency:

If two disks in the same RAID group fail nearly simultaneously (before the RAID-DP can reconstruct data from the first failed disk), the system cannot recover the data, resulting in WAFL inconsistencies.

Why Other Options Are Incorrect:

B . rebooting a node during a disk reconstruction:

Rebooting a node does not cause WAFL inconsistency because ONTAP ensures that RAID reconstructions resume upon reboot without data loss.

D . both party disks failing:

This is not a valid RAID-DP term.

'WAFL and RAID-DP Operations Guide' explains failure scenarios that could cause inconsistencies.

NetApp's 'Troubleshooting RAID Groups and Aggregates' covers recovery procedures for double-disk failures and reconstruction errors.

Answer : A

When replacing a boot device on a FAS8300 system and using a USB memory stick for recovery or installation, the external USB port must be explicitly enabled. This is done through the setenv command in the boot environment.

Steps to Enable the External USB Port:

Reboot the system and interrupt the boot process to access the bootloader prompt.

At the bootloader prompt, use the following command:

arduino

Copy code

setenv usbport_enabled true

Save the configuration and proceed with the boot process.

Why Other Options Are Incorrect:

B . You need to use ONTAP 9.11 or later software:

ONTAP 9.10P6 fully supports external USB recovery. There is no need to upgrade to ONTAP 9.11 for this functionality.

C . Add the boot device before the BIOS is loaded:

While the USB device must be inserted during the boot process, this alone will not enable access unless the port is enabled via setenv.

D . The external USB port is not activated on NetApp systems:

This is incorrect. The external USB port is supported but must be explicitly enabled in the bootloader environment.

NetApp Hardware Installation Guide for FAS8300 systems outlines the steps for enabling the USB port during recovery.

'ONTAP Boot Troubleshooting Guide' specifies the use of the setenv command to activate USB ports.

Answer : A

If the ENVIRONMENT section of the latest MANAGEMENT LOG AutoSupport message is empty, the reason can typically be found in the AUTOSUPPORT-BUDGET.XML file. This file contains information about AutoSupport resource allocation, including what sections were processed and any limits that were hit.

Key Details:

AUTOSUPPORT-BUDGET.XML:

This file provides a summary of the resources (budget) allocated for different AutoSupport sections.

If the ENVIRONMENT section is missing or empty, the AUTOSUPPORT-BUDGET.XML file will indicate whether it was skipped due to resource constraints or configuration limits.

Why Other Sections Do Not Apply:

B . HEADERS: This section only contains metadata about the AutoSupport message, such as timestamps and node details. It does not explain missing sections.

C . AUTOSUPPORT-HISTORY.XML: This file tracks the history of AutoSupport messages but does not provide information about missing sections.

'ONTAP AutoSupport Troubleshooting Guide' explains the role of the AUTOSUPPORT-BUDGET.XML file in diagnosing missing or incomplete AutoSupport sections.

Answer : C

The Upgrade Advisor is a NetApp tool that generates a detailed, step-by-step plan for upgrading an ONTAP system. This tool is available through the Active IQ portal and helps ensure a smooth and risk-free upgrade process.

Key Features of Upgrade Advisor:

Provides a tailored upgrade plan based on the current ONTAP version, cluster configuration, and desired target version.

Identifies potential risks, compatibility issues, and pre-requisite tasks for the upgrade.

Offers detailed instructions for each stage of the upgrade process.

Why Other Options Are Incorrect:

A . ONTAP System Manager:

While System Manager can be used to initiate upgrades, it does not generate a detailed upgrade plan.

B . Active IQ Unified Manager:

Unified Manager focuses on monitoring and management but does not provide upgrade plans.

D . Active IQ Config Advisor:

Config Advisor checks for best practices and configuration issues but is not used for generating upgrade plans.

NetApp's 'ONTAP Upgrade Guide' emphasizes the use of Upgrade Advisor for planning upgrades.

Active IQ documentation provides detailed instructions on accessing and using the Upgrade Advisor tool.