Verified & Latest NS0-094 Dump Q&As with Correct Answers
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NEW QUESTION # 30
A company is performing a hardware refresh on a 2-node switched NetApp ONTAP cluster. They need to replace two older nodes that support only ONTAP releases earlier than ONTAP 9.8 software with two NetApp AFF systems that require ONTAP 9.12.1 or later releases. The cluster is currently running ONTAP 9.7. Which steps complete the hardware refresh with all nodes running on ONTAP 9.12.1 software without disruption?
- A. Upgrade the old nodes to ONTAP 9.8, add the AFF nodes, migrate the data, and remove the old nodes.
- B. Upgrade the old nodes to ONTAP 9.8, add the AFF nodes, and remove the old nodes.
- C. Upgrade all existing nodes to the latest ONTAP 9.7 patch, add the new nodes to the cluster, migrate the data, and remove the old nodes.
- D. Upgrade the old nodes to ONTAP 9.12.1, add the AFF nodes, migrate the data, and remove the old nodes.
Answer: A
Explanation:
ONTAP 9.8 is the minimum release that supports mixed-version cluster expansion required for introducing the newer AFF systems. After upgrading the existing nodes to ONTAP 9.8, the new AFF nodes can join the cluster, data can be migrated nondisruptively, and the old nodes can then be removed before upgrading the cluster to ONTAP 9.12.1.
NEW QUESTION # 31
You have a NetApp ONTAP cluster that is experiencing performance issues. The cluster shows the following messages in the EMS logs:
Which action do you take to resolve these messages?
- A. Run wafliron on the data aggregates.
- B. Replace the adapter in slot 2.
- C. Delete unneeded snapshots.
- D. Replace the multiple bad drives.
Answer: A
Explanation:
The EMS logs report WAFL inconsistencies and compressed block errors within the volume metadata. Running wafliron repairs WAFL filesystem inconsistencies on the affected aggregates and volumes.
NEW QUESTION # 32
What are two options to remove Failure Byte on disks that are marked as failed? (Choose two.)
- A. Reseat the disk.
- B. Update the disk firmware.
- C. Unfail the disk
- D. Power cycle the disk shelf.
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:
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.
NEW QUESTION # 33
Your 2-node switchless cluster controllers are being upgraded. All cables are correctly connected.
After the first controller is replaced, one of the cluster LIFs is not coming online.
You examine the port by running the following command:
Which parameter must you change to bring e4a up?
- A. on the port, the -autonegotiate-admin field
- B. on the broadcast-domain, the -mtu field
- C. on the port, the -ignore-health-status field
- D. on the broadcast-domain, the -ipspace field
Answer: A
Explanation:
Port e4a is administratively set to 1000 Mbps while the cluster port should negotiate at the correct higher speed like the working e4e port. Changing the port autonegotiation setting allows the link to negotiate properly and come online.
NEW QUESTION # 34
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. 72 hours
- C. 48 hours
- D. 12 hours
Answer: D
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.
NEW QUESTION # 35
A storage administrator is troubleshooting a 4-node cluster, where one node is reporting "cluster port is down" alerts. The node has recently been recabled to new cluster switches. The cluster ping-cluster command shows communication failures between the affected node and its partners over the cluster network. All physical cables have been verified as properly seated and undamaged. Which configuration is causing this problem?
- A. An incorrect intercluster LIF is configured.
- B. The SVM data LIFs are on the wrong ports.
- C. An incorrect gateway is defined for the management network.
- D. The MTU size on the new cluster switches is mismatched with the nodes.
Answer: D
Explanation:
Cluster ports require consistent MTU settings between the ONTAP nodes and the cluster switches. After recabling to new cluster switches, an MTU mismatch can cause cluster network communication failures even when the physical cabling is correct.
NEW QUESTION # 36
Which two scenarios are common causes of the root volume needing root volume recovery?
(Choose two.)
- A. The root volume ran out of space.
- B. The mainboard was replaced following a Non-Maskable Interrupt (NMI) panic.
- C. Root volume migrate was performed.
- D. The cluster configuration is out of sync on the volume.
Answer: A,B
Explanation:
1. Root Volume Ran Out of Space:
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.
2. Mainboard Was Replaced Following an NMI Panic:
When a mainboard is replaced, the system configuration stored in the root volume may need to be restored or recovered.
NEW QUESTION # 37
A customer wants to minimize downtime while replacing a failed NVRAM battery in a dual- controller HA pair. Which operational state is REQUIRED before beginning the replacement?
- A. The impaired node must remain powered off for 24 hours
- B. Giveback operations should be completed or controlled properly
- C. Disk ownership must be removed manually
- D. Storage failover must be disabled permanently
Answer: B
Explanation:
Before servicing components such as NVRAM batteries, the HA environment must be stable and giveback properly managed. This prevents unexpected failover conditions and protects data availability. Permanently disabling storage failover is unnecessary. Disk ownership remains managed by ONTAP and typically does not require manual modification during standard FRU procedures.
NEW QUESTION # 38
Which of the following scenarios could result in a NetApp WAFL inconsistency in a RAID DP aggregate?
- A. both party disks failing
- B. two disks failing and a block error during reconstruction
- C. rebooting a node during a disk reconstruction
- D. two disks failing within seconds of each other
Answer: B
Explanation:
A NetApp WAFL (Write Anywhere File Layout) inconsistency in a RAID-DP aggregate could occur in the following scenarios:
1. Two disks failing and a block error during reconstruction
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.
2. Two disks failing within seconds of each other
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.
NEW QUESTION # 39
You replace a failed motherboard on node-02. After two hours, you log into the console port, and you see that the "waiting for giveback" message is displayed. Which command do you run to continue the process?
- A. storage failover giveback -ofnode node-01
- B. storage failover takeover -ofnode node-01
- C. storage failover takeover -ofnode node-02
- D. storage failover giveback -ofnode node-02
Answer: D
Explanation:
The "waiting for giveback" message indicates that the repaired node is waiting for its storage to be returned from the HA partner. Running storage failover giveback -ofnode node-02 returns ownership and normal operation to node-02.
NEW QUESTION # 40
After installing a new system at a customer's site, you notice that some disks show up as single- pathed.
The output of the nodeshell command sasadmin expander_map is as follows:
According to the output, which cable do you need to check and/or replace?
- A. the cable between shelf ID 3, IOM A and shelf ID 4, IOM A
- B. the cable between shelf ID 4, IOM A and controller port 0a
- C. the cable between shelf ID 4, IOM A and shelf ID 4, IOM B
- D. the cable between shelf ID 3, IOM A and controller port 0b
Answer: A
Explanation:
The expander map shows channel 0a reaching shelf IDs 1, 2, and 3 on IOM A, but shelf ID 4 is missing from that path. This indicates a break in the IOM A shelf chain between shelf ID 3 and shelf ID 4, so that cable should be checked or replaced.
NEW QUESTION # 41
At what stage is a write acknowledged to a client?
- A. when the write has been flushed from NVRAM to RAM
- B. when the write is present in the local node RAM and NVRAM
- C. when the write has been flushed to disk
- D. when the write is present in the NVRAM on the local node and its HA partner
Answer: D
NEW QUESTION # 42
While reviewing a fresh install of a new NetApp ONTAP HA pair, the Field Support engineer notices that the controllers do not report the same system storage configuration.
The first controller reports the following: System Storage Configuration: Multi-Path HA The second controller reports the following: System Storage Configuration: Single- Path HA There are no EMS errors, and there are no alerts on the system or on NetApp ONTAP System Manager.
What is the next step in troubleshooting this issue?
- A. Reboot the controller that is reporting the single-path configuration.
- B. Ensure that all disk shelves are connected, with at least four SAS cables to each controller.
- C. Check cabling to the controller that is reporting the single-path configuration.
- D. Ensure that the second controller is set up for ADP.
Answer: C
Explanation:
A controller reporting Single-Path HA instead of Multi-Path HA indicates that one or more SAS paths are missing. The next troubleshooting step is to verify the SAS cabling connected to the controller reporting the single-path configuration.
NEW QUESTION # 43
You have replaced a failed boot device. You perform boot_recovery and receive no errors.
However, when the node reboots, it reports that it has no disks. What are two possible causes?
(Choose two.)
- A. The interconnect is down.
- B. The node is booting a lower version of ONTAP software than was last used.
- C. The disks that are owned by this node have been marked as failed.
- D. The SAS cables were incorrectly reconnected after reinstalling the motherboard.
Answer: B,D
Explanation:
Possible Causes for "No Disks" Error:
A (Incorrect SAS Cabling): If the SAS cables are incorrectly reconnected or swapped after replacing the boot device, the disks may not be detected because the physical connection to the shelves is compromised. Verifying and reseating the SAS cables is essential.
C (Lower ONTAP Version): If the node boots into an ONTAP version that is lower than the version previously used, it might not recognize the RAID labels or disk metadata created by the higher ONTAP version.
NEW QUESTION # 44
You have upgraded your cluster from ONTAP 9.5 software to ONTAP 9.7 software. After the upgrade, you notice that the upgrade causes issues. You decide to revert to ONTAP 9.5 software. Which revert step is allowed?
- A. Revert directly from ONTAP 9.7 software to ONTAP 9.5 software.
- B. Revert from ONTAP 9.7 software to ONTAP 9.5 software by using the boot backup procedure.
- C. Revert to ONTAP 9.5 software with the netboot procedure.
- D. Revert from ONTAP 9.7 software to ONTAP 8.6 software and then to ONTAP 9.5 software.
Answer: C
Explanation:
Reverting to a Previous ONTAP Version:
Reverting ONTAP software requires specific procedures and is only supported if the ONTAP version being reverted to is compatible with the current cluster configuration.
Why the Netboot Procedure Is Used:
The netboot process loads the desired ONTAP version directly into memory from a network location and reinitializes the system.
This method is used when a full software revert is required and is often necessary for downgrades to a version that cannot be directly reverted to from the running ONTAP version.
Key Notes:
A direct revert is not supported from ONTAP 9.7 to ONTAP 9.5 using standard methods due to system metadata changes.
Always verify compatibility using the "ONTAP Software Version Interoperability Matrix".
NEW QUESTION # 45
You receive the following AutoSupport message:
When researching, you discover the following output:
What action do you take to resolve this issue?
- A. Update the RCF file on the cluster switches.
- B. Replace the SFP on port e0a on node-01.
- C. Replace the SFP on port e0a on node-02.
- D. Update the firmware on the cluster switches.
Answer: C
Explanation:
The degraded health output identifies Node-02 port e0a with link_flapping, indicating an unstable physical connection on that node port. Replacing the SFP on the affected port is the appropriate corrective action.
NEW QUESTION # 46
You have created a case with NetApp Support for an issue with a DS4246 shelf on an ONTAP
9.12.1 system. They have requested that you provide shelf logs. What action do you need to take to collect the shelf logs?
- A. Invoke a diagnostic AutoSupport with the subsystem storage.
- B. Invoke an autosupport of type all using Active IQ Unified Manager.
- C. Invoke a diagnostic autosupport with the subsystem log_files.
- D. Provide the output of the nodeshell command rdfile/etc/log/shelflog.
Answer: A
Explanation:
To collect shelf logs for a DS4246 shelf in an ONTAP 9.12.1 system, you must invoke a diagnostic AutoSupport specifically targeting the storage subsystem. This action ensures that detailed storage logs, including shelf logs, are included in the AutoSupport bundle.
Steps to Collect Shelf Logs:
Use the following command:
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system node autosupport invoke -node <node_name> -type diagnostic -subsystem storage Replace <node_name> with the name of the node experiencing the issue.
This command generates an AutoSupport message that includes logs related to storage subsystems, such as disk shelves and adapters.
Provide the AutoSupport case number to NetApp Support for further analysis.
NEW QUESTION # 47
On a NetApp FAS9000 system, which two field replaceable units (FRUs) are supported for replacement without takeover? (Choose two.)
- A. NVRAM module
- B. I/O module
- C. DCPM module
- D. caching module
Answer: A,B
Explanation:
FRUs on FAS9000 Supporting Replacement Without Takeover:
A). (I/O Module): I/O modules can be replaced hot (without takeover) to maintain system uptime during hardware servicing.
D). (NVRAM Module): NVRAM modules on FAS9000 can also be replaced without a node takeover, ensuring data integrity during replacement.
NEW QUESTION # 48
You have a NetApp ONTAP cluster for which you want to reuse a disk shelf from a different cluster. You have removed the disk shelf from the first cluster, moved the shelf, and correctly cabled the shelf to the new cluster. After connecting the new disk shelf, you attempt to create a new aggregate. You receive a message stating that there are not enough disks available. You see the following results:
What action do you take to resolve this issue?
- A. Correct the disk ownership.
- B. Remove the foreign aggregate.
- C. Unfail the failed drives.
- D. Replace the failed drives.
Answer: A
Explanation:
The shelf was moved from another cluster, and the disks still contain ownership and foreign aggregate metadata. Correcting disk ownership makes the disks available to the new cluster so they can be used to create a new aggregate.
NEW QUESTION # 49
In which two sections of AutoSupport can you find information to analyze the following panic?
(Choose two.)
Panic_Message: PCI Error NMI from
device(s):ErrSrcID(CorrSrc(0xf00),UCorrSrc(0x18)), RPT(0,3,0):Qlogic FC
16G adapter in slot 1 on Controller
- A. PCI-HIERARCHY.XML
- B. SSRAM-LOG
- C. ALL-COREDUMP.XML
- D. HA-RASTRACE.TGZ
Answer: B,D
Explanation:
To analyze the provided panic error, the two sections of AutoSupport that are essential for investigation are:
1. HA-RASTRACE.TGZ
What it is:
HA-RASTRACE.TGZ contains HA (High Availability) system trace logs. It records hardware diagnostics, error traces, and the HA system's response to hardware events. These logs are critical when analyzing hardware-related panics, including those caused by PCI errors.
Why it's relevant to the panic:
In the given panic message, the NMI (Non-Maskable Interrupt) error originates from a Qlogic FC
16G adapter. HA-RASTRACE.TGZ will provide detailed diagnostics, including the error reporting from the HA interconnect and other hardware diagnostics. Specifically, it may include information about how the system detected the PCI fault and any actions taken to protect the system state.
How to analyze:
Extract the HA-RASTRACE.TGZ file from the AutoSupport bundle. Review hardware-related trace messages for entries associated with the PCI bus or the Qlogic FC adapter.
Look for specific error codes or keywords like PCI Error, NMI, or Qlogic.
2. SSRAM-LOG
What it is:
SSRAM-LOG records low-level hardware error details, including PCI device register states and uncorrectable memory errors. It is particularly useful for analyzing errors originating in peripheral hardware like network or storage adapters connected via PCI.
Why it's relevant to the panic:
The panic message explicitly references a PCI Error NMI caused by a Qlogic FC adapter.
SSRAM-LOG captures detailed state information for PCI devices, which can help identify whether the fault originated in the adapter hardware, the PCI bus, or another related component.
How to analyze:
Extract the SSRAM-LOG from the AutoSupport bundle.
Search for PCI-related errors, including the specific error source IDs (e.g., ErrSrcID(CorrSrc(0xf00),UCorrSrc(0x18))).
Review the log entries to confirm the root cause of the NMI.
NEW QUESTION # 50
Which two statements are correct when describing L1 and L2 Watch Dog Resets (WDR)?
(Choose two.)
- A. L2 WDR requests creation of a core dump before reset.
- B. L1 WDR is initiated after 0.5 seconds from the event.
- C. L2 WDR is initiated after 2 seconds from the event.
- D. L1 WDR performs a soft reset.
Answer: A,C
Explanation:
1. L1 Watchdog Reset (WDR):
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.
2. L2 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.
NEW QUESTION # 51
A customer upgrades ONTAP but notices cluster quorum warnings afterward. Which area should be investigated FIRST?
- A. Fan speed thresholds
- B. Cluster interconnect network health
- C. Shelf bezel alignment
- D. Disk encryption keys
Answer: B
Explanation:
Cluster quorum warnings after ONTAP upgrades often indicate cluster interconnect communication problems. Engineers should validate cluster network ports, switch health, and latency conditions. Fan thresholds and bezel alignment are unrelated operational concerns.
Encryption keys rarely trigger quorum-specific warnings following standard software upgrades.
NEW QUESTION # 52
You have replaced the cluster backend switches on a 4-node NetApp ONTAP cluster with new switches. After the replacement, you realize that the system shows errors for the old switches that were removed:
You also notice that system switch ethernet showshows four switches, the two old switches and the two new switches.
What action will resolve the issue?
- A. Reconnect the old switches and download a support bundle using the system switch ethernet log collect command.
- B. Perform a reboot of the affected node using the storage failover takeover command.
- C. Delete the old switches from the database using the system switch ethernet delete command.
- D. Clear the health alert using the system health alert delete command.
Answer: C
Explanation:
The old cluster switches remain in the ONTAP switch database after the hardware replacement.
Using the system switch ethernet delete command removes the obsolete switch entries, which clears the stale monitoring and health alerts associated with the removed switches.
NEW QUESTION # 53
A customer observes that one node repeatedly enters takeover mode due to thermal alarms.
Which FRU should be inspected FIRST?
- A. Cooling fans and airflow obstructions
- B. Shelf serial numbers
- C. Cluster passwords
- D. Power cable labels
Answer: A
Explanation:
Thermal alarms are commonly associated with failed cooling fans, blocked airflow, or improper rack ventilation. Inspecting cooling-related FRUs is the highest priority. Shelf serial numbers and passwords are unrelated to thermal conditions. Continued overheating may eventually force protective node shutdowns.
NEW QUESTION # 54
How do you set environment variables to factory settings?
- A. setenv factory
- B. wipeconfig
- C. unsetenv all
- D. set-defaults
Answer: D
Explanation:
To reset environment variables to factory settings, the set-defaults command is used. This command clears all customizations and restores the environment variables to their default values.
Key Details:
Command Syntax:
At the LOADER prompt, type:
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set-defaults
Effect:
This command resets all environment variables (e.g., boot arguments, diagnostic settings) to their original factory defaults.
NEW QUESTION # 55
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