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Network Appliance NS0-093 Exam is a comprehensive assessment of a candidate's ability to support NetApp hardware products. NetApp Accredited Hardware Support Engineer certification is essential for professionals who work in the IT industry, particularly those involved in managing and supporting data storage systems. NetApp Accredited Hardware Support Engineer certification exam covers a wide range of topics, including NetApp hardware installation, troubleshooting, and maintenance. Achieving the certification provides a competitive advantage to professionals in the IT industry and validates their expertise in supporting NetApp hardware products.

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Network Appliance NetApp Accredited Hardware Support Engineer Sample Questions (Q51-Q56):

NEW QUESTION # 51
Which RAID type provides protection against three disk failures?

A. RAID 5
B. RAID-TEC
C. RAID 4
D. RAID DP

Answer: B

Explanation:
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.

NEW QUESTION # 52
Which of the following scenarios could result in a NetApp WAFL inconsistency in a RAID DP aggregate?

A. two disks failing within seconds of each other
B. two disks failing and a block error during reconstruction
C. both party disks failing
D. rebooting a node during a disk reconstruction

Answer: B

Explanation:
A NetApp WAFL (Write Anywhere File Layout) inconsistency in a RAID-DP aggregate could occur in the following scenarios:
* 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.
1. Two disks failing and a block error during reconstruction
* 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.
2. Two disks failing within seconds of each other
* 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.
Why Other Options Are Incorrect:
* "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.
References:

NEW QUESTION # 53
Where is a kernel core file stored on a FAS9000 system that is running ONTAP 9.12.1 software?

A. on the partner root aggregate
B. on the mailbox disk
C. on the root aggregate
D. on the boot device

Answer: C

Explanation:
On a FAS9000 system running ONTAP 9.12.1, the kernel core file is stored on the root aggregate. This is the default location where ONTAP writes kernel core files for system-level failures.
* The root aggregate is the aggregate that contains the root volume for a given node in the cluster. This aggregate is used for critical system files and logs, including kernel core files.
* When a kernel panic or other critical failure occurs, the core dump is written to the root aggregate for later analysis by NetApp Support.
Key Details:
* A. on the partner root aggregate: The partner root aggregate is not used for storing core files unless explicitly configured (which is not the default behavior).
* C. on the mailbox disk: The mailbox disk is used for cluster quorum and configuration information, not for storing core files.
* D. on the boot device: The boot device contains ONTAP software and boot files but does not store kernel core dumps.
* "ONTAP System Administration Guide" specifies that core files are stored on the root aggregate.
* NetApp's "Troubleshooting and Diagnostics Guide" confirms the default behavior for kernel core file storage.
Why Other Options Are Incorrect:References:

NEW QUESTION # 54
What are two valid commands that can be used to trigger an AutoSupport? (Choose two.)

A. ::> autosupport invoke -node <nodename> -type all
B. ::> system node coredump upload -node <nodename>
C. ::> autosupport invoke-core-upload -node <nodename>
D. ::> autosupport history show-upload-details -node <nodename>

Answer: A,C

Explanation:
To trigger an AutoSupport message in ONTAP, the following commands are valid:
* What it does:This command manually triggers a complete AutoSupport message of type "all." This includes logs and system information from all subsystems.
* How to use:
* Run the command: autosupport invoke -node <nodename> -type all
* Replace <nodename> with the name of the node for which you want to generate the AutoSupport message.
* Why it's relevant:This is the primary method for triggering a full AutoSupport message manually. It is commonly used during troubleshooting to provide comprehensive system data to NetApp Support.
1. ::> autosupport invoke -node <nodename> -type all
* What it does:This command is specifically used to upload core files (e.g., kernel or user space cores) from a node to NetApp Support for analysis.
* How to use:
* Run the command: autosupport invoke-core-upload -node <nodename>.
* Replace <nodename> with the name of the node for which you want to upload core files.
* Why it's relevant:If there is a system panic or other critical issue, this command ensures that core files are included in the AutoSupport message for detailed analysis.
2. ::> autosupport invoke-core-upload -node <nodename>
* A. ::> autosupport history show-upload-details -node <nodename>:
* This command displays the history of AutoSupport uploads but does not trigger a new AutoSupport.
* B. ::> system node coredump upload -node <nodename>:
* This command uploads coredumps directly to a support server but does not trigger an AutoSupport message.
Why Other Options Are Incorrect:
* "ONTAP 9 AutoSupport Configuration Guide" confirms autosupport invoke as a valid command to trigger AutoSupport messages.
* "ONTAP CLI Reference Manual" specifies autosupport invoke-core-upload for core file uploads.
References:

NEW QUESTION # 55
Your customer notices that their AFF A220 high-availability (HA) system is showing Single-Path HA.

How do you make the system into multipath HA?

A. 0a and 0d on both controllers should be connected
B. 0c and 0d on both controllers should be connected.
C. 0a and 0b on both controllers should be connected.
D. 0a and 0c on both controllers should be connected.

Answer: D

Explanation:
In a NetApp high-availability (HA) configuration, multipath HA ensures redundancy by providing two independent paths from each controller to the connected storage. If the system is currently showing Single- Path HA, it means only one path is operational or connected, which is a potential single point of failure.
To convert the configuration to multipath HA, additional cabling must be configured to establish the second path. For the AFF A220 system, the correct connections are as follows:
Explanation of the Correct answer:
* AFF A220 Port Configuration for HA:
* Each controller in an AFF A220 has ports labeled 0a, 0b, 0c, and 0d for connectivity.
* In a multipath HA configuration, each controller must have two independent paths to the connected storage via the partner controller's disk shelves.
* Correct Cabling for Multipath HA:
* Port 0a on both controllers must be connected to the corresponding port (e.g., disk shelf stack or Inter-Switch Link).
* Port 0c on both controllers must also be connected to complete the redundant path.
* These connections ensure that there are two independent data paths between the controllers and the storage system, providing fault tolerance in case one path fails.
* Single-Path HA to Multipath HA:
* If the system currently shows Single-Path HA, it is likely that only one set of ports (e.g., 0a and
0b) are cabled.
* Adding the additional connections on 0a and 0c establishes the second path required for multipath HA.
Why the Other Options Are Incorrect:
* A. 0a and 0b on both controllers should be connected:
* This option only connects ports 0a and 0b, which does not establish a multipath HA configuration. Port 0c is also required for redundancy.
* C. 0c and 0d on both controllers should be connected:
* Connecting only 0c and 0d would leave ports 0a disconnected, failing to establish a proper multipath HA setup. Both 0a and 0c are required.
* D. 0a and 0d on both controllers should be connected:
* Connecting 0a and 0d is not the standard configuration for multipath HA in an AFF A220 system. Port 0c is part of the required configuration.
How to Verify the Configuration:
* Use the following ONTAP command to verify the HA status:
cluster::> storage failover show -fields multipath-ha
* This will display whether the system is in multipath HA or single-path HA mode.
* Check the port connectivity:
cluster::> network port show -node <node_name>
References:
* NetApp Hardware Installation and Setup Guide for AFF A220.
* NetApp Knowledge Base: "Configuring Multipath HA for AFF Systems."
* ONTAP 9.x System Administration Guide: "High Availability Configurations." Understanding Single-Path HA vs. Multipath HA:
* Single-Path HA indicates that only one path exists between the controllers and the connected shelves, leading to limited redundancy.
* Multipath HA requires both controllers to have redundant SAS connections to the shelves.
Cabling for Multipath HA in AFF A220 Systems:
* To achieve multipath HA, you must connect 0c and 0d on both controllers to the appropriate stack ports on the shelves.
* This ensures dual paths for each controller to access the storage shelves.
NetApp Reference Documentation:
* Refer to the "ONTAP Multipath HA Configuration Guide" and the "NetApp Hardware Installation Guide" for AFF A220 systems for cabling diagrams and best practices.

NEW QUESTION # 56
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