NetApp NS0-093 Exam Dumps

To view information about installed Field Replaceable Units (FRUs) using the Service Processor, the following commands are used:

1. system fru list

What it does: Displays a list of all installed FRUs, such as disks, power supplies, and fans.

Example Usage:

system fru list

2. system fru show

What it does: Provides detailed information about specific FRUs, including serial numbers, statuses, and hardware details.

system fru show

Why Other Options Are Incorrect:

C . system sensors show:

This command displays sensor data (e.g., temperature, voltage) but does not list FRUs.

D . system power status:

This command shows power supply status but does not provide FRU details.

'Service Processor Commands Guide' from NetApp provides a comprehensive overview of system fru list and system fru show.

RAID-TEC Overview:

RAID-TEC (Triple Erasure Coding) is a NetApp RAID technology designed to protect against up to three simultaneous disk failures.

It is ideal for systems with high-density disks or workloads requiring extreme fault tolerance.

Why RAID-TEC Is Correct:

RAID-TEC uses triple-parity protection, which provides redundancy against three disk failures, making it more resilient than RAID-DP or RAID 5.

RAID-DP only protects against two disk failures, while RAID 4 and RAID 5 protect against a single failure.

NetApp Reference Documentation:

'NetApp RAID and Data Protection Guide' details the differences between RAID-DP and RAID-TEC, highlighting RAID-TEC's ability to tolerate three failures.

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.

To replace a drawer in a DS460c shelf, the following steps must be taken:

1. Disconnect the cable chains from the chassis

Why this is required: Cable chains connect the drawer to the shelf and must be disconnected to safely remove the drawer.

2. Evacuate all drives in the drawer

Why this is required: Drives must be removed to avoid damage during the drawer replacement process and to reduce the weight of the drawer for safe handling.

Why Other Options Are Incorrect:

A . Shut down both nodes:

This is unnecessary because DS460c shelves support online replacement, and the system can remain operational.

C . Power off the shelf:

This is also unnecessary. DS460c shelves are hot-swappable, meaning they do not require the shelf to be powered down.

'DS460c Hardware Service Guide' explains the procedure for replacing a drawer.

NetApp's 'Field Replacement Guide' for DS460c shelves emphasizes online and hot-swappable replacements.

Analyzing the Error in the Event Log:

The log entry indicates a medium error on a disk, suggesting an unrecoverable read issue.

While the RAID subsystem attempts to reconstruct unreadable data, this error might indicate a firmware issue or a compatibility problem with the disk.

Why Reviewing Firmware and Known Issues Is Important:

Medium errors can sometimes result from outdated or incompatible firmware.

By reviewing firmware release notes and known issues for the disk model (NETAPP X381_HLBRE10TSDB in this case), you can identify if this is a known issue and resolve it by updating the firmware.

Other Options:

Sanitize the disk (Option A): Not relevant here, as sanitization is used for secure data erasure.

Reseat the disk (Option B): Useful for addressing hardware seating issues, but not the first step here.

Diskcopy to a spare (Option D): This is a last-resort recovery step and not the primary action.

NetApp Reference Documentation:

'ONTAP Disk Management Guide' and 'Disk Firmware Release Notes' detail how to handle medium errors and update firmware.