NS0-093 Practice Questions

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.

References:

NetApp Hardware Documentation: AFF A220 Component Replacement Guide.

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

To determine the root cause of an unexpected node failure using the Service Processor (SP), the following commands are helpful:

What it does:Displays recent events logged by the Service Processor. This includes hardware failures, environmental alerts, or other events that may have caused the node failure.

Example Usage:

1. event log showevent log show

What it does:Shows information about any core dumps that were generated during the failure. A core dump provides a snapshot of the system state at the time of the failure, which can be analyzed to identify the root cause.

2. system coresystem core

A.  

sp status –d:

This command provides status information about the Service Processor itself but does not help diagnose the root cause of the node failure.

C.  

system log:

This is not a valid Service Processor command.

Why Other Options Are Incorrect:

NetApp "Service Processor Diagnostics Guide" details commands such as event log show and system core for troubleshooting node failures.

References:

If a node is not booting, the following methods can be used to access the system for troubleshooting:

What it does:The SP provides out-of-band management access to the node, even if the node is not booting.

How to use:

Connect to the SP using SSH or a direct console connection.

Use SP commands to gather logs or perform diagnostics.

1. Service Processor (SP)

What it does:The serial console provides direct access to the node's bootloader or maintenance mode.

How to use:

Connect to the serial port using a terminal emulator.

Use console commands to interact with the system.

2. Serial Console

A.  

node management port:

The node management interface is only accessible if the node is booted and ONTAP is running.

B.  

cluster management port:

The cluster management interface requires the cluster to be operational, which is not possible if the node is not booting.

Why Other Options Are Incorrect:

NetApp "Service Processor and Serial Console Guide" provides instructions for accessing a non-booting node.

References:

To invoke AutoSupport in ONTAP, the following tools can be used:

How to use:Run the command:

1. CLI (Command Line Interface)python

Copy code

autosupport invoke -node -type all

This triggers AutoSupport to collect and send logs and system information.

How to use:Log in to the Active IQ portal and use its interface to request an AutoSupport message from the connected ONTAP systems.

2. NetApp Active IQ website

A.  

NetApp Cloud Insights:

This tool is used for monitoring and performance analysis, not for triggering AutoSupport messages.

D.  

the SmartSolve tool:

SmartSolve is used for case resolution guidance but does not invoke AutoSupport.

Why Other Options Are Incorrect:

"ONTAP AutoSupport Guide" provides instructions for invoking AutoSupport via CLI and Active IQ.

References:

The following ONTAP systems support both SSD and SAS disks:

Description:

The FAS2750 is part of NetApp's hybrid storage array product line.

It supports both SSDs for performance tiers and SAS disks for capacity tiers, making it suitable for mixed workloads.

1. FAS2750

Description:

The FAS8200 is an enterprise-level storage system that also supports hybrid configurations with both SSD and SAS drives.

This system is designed to handle high performance and capacity needs.

2. FAS8200

A.  

AFF C190:

The AFF C190 is an all-flash system and only supports SSDs. It does not support SAS disks.

C.  

AFF A220:

Like the AFF C190, the AFF A220 is also an all-flash system that supports SSDs only.

Why Other Options Are Incorrect:

NetApp "Hardware Universe" confirms drive support for FAS and AFF systems.

NetApp product documentation details supported disk types for hybrid and all-flash systems.

References: