NetApp NS0-093 Practice Exam Questions & Answers

Command Syntax for Downloading ONTAP Image:

The cluster image package get command is used to download the ONTAP image from a specified URL to the cluster's image repository.

The syntax requires the --url parameter followed by the full URL of the image file.

Why Option C Is Correct:

This command syntax directly downloads the image from the local web server at http://192.168.10.10/ to the ONTAP cluster repository.

Other options either refer to incorrect commands or unsupported URLs.

NetApp Reference Documentation:

The 'ONTAP Software Upgrade Guide' provides the exact command and steps for downloading ONTAP images via HTTP or FTP.

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.

To diagnose a PCI/NMI error and collect logs, use the following commands:

1. pelog --a --g=2

What it does: This command collects PCI error logs, including detailed information about PCI devices and the errors that caused the panic.

How to use: Run the command from the nodeshell to capture the required PCI log entries.

2. rdfile /mroot/etc/log/SSRAM

What it does: This command reads the SSRAM log file, which contains low-level error information related to PCI and other hardware subsystems.

How to use: Run the command to view the log entries directly for detailed troubleshooting.

Why Other Options Are Incorrect:

B . show pci --v:

While this command displays PCI device information, it does not provide detailed error logs.

D . event log show:

This displays event log entries but does not contain the specific PCI or NMI-related logs required for diagnosing the panic.

'ONTAP Hardware Troubleshooting Guide' lists pelog and SSRAM as tools for analyzing PCI errors.

'ONTAP Panic Analysis Guide' emphasizes the importance of collecting detailed hardware logs.

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:

1. Reseat the Disk

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.

2. Unfail 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:

disk unfail <disk_name>

Why Other Options Are Incorrect:

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.

NetApp 'Disk Maintenance Guide' explains procedures to address failed disks.

The 'ONTAP Command Reference' covers the disk unfail command for clearing the Failure Byte.