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Network Appliance NS0-093 certification exam is designed to test the knowledge and skills of hardware support engineers who work with NetApp storage systems. NetApp Accredited Hardware Support Engineer certification is awarded by NetApp, a leading provider of data storage solutions for businesses of all sizes. The NS0-093 Exam is a critical step in becoming a NetApp Accredited Hardware Support Engineer, which is a highly sought-after credential in the IT industry.

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Network Appliance NetApp Accredited Hardware Support Engineer Sample Questions (Q13-Q18):

NEW QUESTION # 13
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. Run wafliron from the boot_menu.
B. Unfail the drives from maintenance mode.
C. Use diskcopy from maintenance mode.
D. Unfail the drives in the order that they failed from the clustershell

Answer: B

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
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storage show disk -broken
This command lists all failed (broken) drives.
* Unfail the Drives:
* Use the following command for each failed drive:
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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 # 14
What is the default amount of time that a volume is available for recovery from the volume recovery queue following a volume deletion?

A. 24 hours
B. 12 hours
C. 48 hours
D. 72 hours

Answer: B

Explanation:
When a volume is deleted in a NetApp ONTAP system, it is placed in the Volume Recovery Queue. By default, the volume remains in this recovery queue for 12 hours before being permanently deleted. This allows administrators to recover mistakenly deleted volumes within the set retention period.
Explanation of Default Behavior:
* Volume Recovery Queue:
* This is a feature in NetApp ONTAP that acts as a safety mechanism, providing a grace period for recovering deleted volumes.
* The default retention period for volumes in the recovery queue is 12 hours, as confirmed by the NetApp KB: "How to use the Volume Recovery Queue."
* How to Recover a Deleted Volume:
* Administrators can recover a deleted volume as long as it remains in the recovery queue and the retention period has not expired.
* Use the ONTAP CLI command:
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cluster::> volume recovery-queue recover -vserver <vserver_name> -volume <volume_name>
* This command restores the volume back to its original state.
* How to Check the Volume Recovery Queue:
* To view volumes in the recovery queue and their expiration times, use:
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cluster::> volume recovery-queue show
* Changing the Default Retention Period:
* While the default period is 12 hours, it can be adjusted by administrators to fit specific organizational requirements. This is done via system settings or policies.
Why the Other Options Are Incorrect:
* B. 48 hours: Incorrect. The default retention period is not 48 hours; it is 12 hours by default.
* C. 72 hours: Incorrect. While a custom configuration could allow this, it is not the default.
* D. 24 hours: Incorrect. Although this was previously thought to be the default, NetApp documentation explicitly states it is 12 hours.
References:
* NetApp Knowledge Base Article: "How to use the Volume Recovery Queue".
* NetApp ONTAP Documentation: Volume Recovery and Data Management Procedures.

NEW QUESTION # 15
What are two options to remove Failure Byte on disks that are marked as failed? (Choose two.)

A. Reseat the disk.
B. Power cycle the disk shelf.
C. Unfail the disk
D. Update the disk firmware.

Answer: A,C

Explanation:
If a disk is marked as failed, the Failure Byte on the disk indicates that the disk has been flagged for failure.
This can be cleared using the following methods:
* What it does:Physically remove the disk from the shelf and reseat it. This action can trigger the system to re-evaluate the disk's status and clear the Failure Byte if the failure was transient or due to connection issues.
1. Reseat the Disk
* What it does:Using the disk unfail command in maintenance mode clears the Failure Byte and returns the disk to service.
* Command Example:
2. Unfail the Diskdisk unfail <disk_name>
* A. Power cycle the disk shelf:
* Power cycling the shelf may clear other transient hardware issues but does not specifically clear the Failure Byte.
* C. Update the disk firmware:
* While updating firmware can prevent future issues, it does not address disks already marked as failed.
Why Other Options Are Incorrect:
* NetApp "Disk Maintenance Guide" explains procedures to address failed disks.
* The "ONTAP Command Reference" covers the disk unfail command for clearing the Failure Byte.
References:

NEW QUESTION # 16
On an AFF A700 system, a SAS stack is connected to SAS ports 2a and 2b. The system has an additional 4- port SAS card in slot 9.
How should the cabling the corrected for best practices?

A. Use port 2a and 9a.
B. Use port 2a and 9b.
C. Use port 2b and 9d.
D. Use port 2a and 2c.

Answer: A

Explanation:
Best Practices for SAS Cabling in AFF A700 Systems:
* The AFF A700 system has built-in SAS ports (e.g., 2a and 2b) as well as additional SAS ports on optional SAS cards.
* To ensure high availability and redundancy, it is recommended to distribute SAS connections across multiple SAS ports from different controllers or slots.
Why Port 2a and 9a Are Recommended:
* Port 2a is a built-in SAS port on the AFF A700 system.
* Port 9a belongs to the additional SAS card in slot 9.
* By connecting the stack using 2a and 9a, you utilize different SAS domains (built-in controller ports and add-on card ports), providing both path redundancy and load balancing.
NetApp Reference Documentation:
* "NetApp Hardware Universe" and "ONTAP Hardware Installation Guide" highlight that SAS cabling for redundancy should leverage different ports, including those from separate SAS controllers or add-on cards.
* NetApp's best practice guidelines suggest avoiding connections to the same SAS controller or port group for critical stacks.

NEW QUESTION # 17
Which two scenarios are common causes of the root volume needing root volume recovery? (Choose two.)

A. Root volume migrate was performed.
B. The root volume ran out of space.
C. The cluster configuration is out of sync on the volume.
D. The mainboard was replaced following a Non-Maskable Interrupt (NMI) panic.

Answer: B,D

Explanation:
* If the root volume runs out of space, it can cause operational issues and require recovery.
* The root volume must always have sufficient space for system logs, configuration files, and core dumps.
1. Root Volume Ran Out of Space:
* When a mainboard is replaced, the system configuration stored in the root volume may need to be restored or recovered.
2. Mainboard Was Replaced Following an NMI Panic:
* C. Root volume migrate was performed:
* Root volume migration is a normal operation and does not typically cause the need for root volume recovery.
* D. The cluster configuration is out of sync on the volume:
* While this can cause configuration issues, it does not directly lead to root volume recovery.
Why Other Options Are Incorrect:
* "ONTAP Root Volume Management Guide" explains scenarios leading to root volume issues and recovery procedures.
References:

NEW QUESTION # 18
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