NS0-093 Exam Dumps - NetApp Accredited Hardware Support Engineer

For an automatic takeover to occur in an HA pair, the following conditions must be met:

The HA pair uses mailbox disks to coordinate and ensure that both nodes have consistent cluster state information.

If the mailbox disks are not reachable, the takeover process cannot proceed.

1. Mailbox Disks Must Be Reachable:

The nodes in an HA pair continuously mirror NVRAM data to ensure that writes are protected.

If NVRAM is not synchronized, the takeover cannot safely handle active workloads.

2. NVRAM Must Be Synchronized:

A. The combined utilization of both nodes must be less than 100%:

This is not a requirement for automatic takeover. ONTAP can handle higher utilization during failover scenarios.

B. The cluster network must be available:

While the cluster network is critical for normal operation, takeover can still occur if the cluster network is unavailable, as long as the HA interconnect is operational.

Why Other Options Are Incorrect:

NetApp "ONTAP High Availability Guide" outlines the requirements for automatic takeover in HA pairs.

"ONTAP NVRAM Synchronization and Failover Guide" explains NVRAM mirroring requirements.

References:

Description:

L1 WDR is a hardware-initiated reset that occurs when the system detects an unrecoverable error or lockup lasting 0.5 seconds.

Key Characteristics:

It performs a hard reset, meaning the system immediately reboots without creating a core dump.

1. L1 Watchdog Reset (WDR):

Description:

L2 WDR is initiated when the system fails to recover from a critical fault after 2 seconds.

Key Characteristics:

It requests a core dump to capture the system state for diagnostic purposes before performing a reset.

2. L2 Watchdog Reset (WDR):

B. L1 WDR is initiated after 0.5 seconds from the event:

This is incorrect because L1 WDR performs a hard reset and does not initiate after 2 seconds.

C. L1 WDR performs a soft reset:

This is incorrect because L1 WDR performs a hard reset, not a soft reset.

Why Other Options Are Incorrect:

"ONTAP Panic Analysis Guide" describes the behavior and timing of L1 and L2 WDR events.

NetApp Support documentation on system resets explains the differences between L1 and L2 watchdog resets.

References:

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

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

Example Usage:

1. system fru listsystem fru list

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

2. system fru showsystem fru show

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.

Why Other Options Are Incorrect:

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

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:

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: