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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: ONTAP Operating System | 30% | - ONTAP architecture and cluster administration - Using support and diagnostic tools - Upgrades, patching, and configuration issues - Troubleshooting OS issues and panic events |
| Topic 2: Performance and Data Protection | 20% | - Monitoring and optimization techniques - SnapMirror, SnapVault, and replication troubleshooting - Software-defined ONTAP solutions - Performance concepts and bottleneck analysis |
| Topic 3: Hardware and Infrastructure | 25% | - SP/BMC and management interfaces - Hardware component troubleshooting - MetroCluster and FC environments - Cluster interconnect and HA configuration |
| Topic 4: Protocols and Data Access | 25% | - S3 object protocol configuration and troubleshooting - SAN protocols: iSCSI, Fibre Channel, FCoE - Networking and LIF configuration - NAS protocols: NFS, SMB/CIFS |
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NEW QUESTION # 26
A storage administrator reports that a monitoring toot is reporting that the storage controller reads between 90% to 93% CPU use. You run the sysstat -m command against the node in question.
Referring to the exhibit, which statement is correct?
Answer: C
Explanation:
= CPU utilization in ONTAP is not a linear measure of the system load, nor can it be used alone as a measure of the overall system utilization. ONTAP uses a Coarse Symmetric Multiprocessing (CSMP) design which partitions system functions into logical processing domains, each with its own scheduling rules and resource availability. Therefore, a high CPU utilization does not necessarily indicate a performance problem, unless it is accompanied by other contributing factors such as high latency, low throughput, or high queue depth. ONTAP has several mechanisms to optimize CPU usage and balance the workload across the cores, such as WAFL parallelization, exempt processing, and CPU pinning. The CPU utilization reported by the sysstat command is an average across all cores and domains, and does not reflect the actual CPU activity or availability for each domain. Therefore, the CPU is not a first-order monitoring metric for ONTAP, and other metrics such as latency, throughput, and queue depth should be considered first. Reference = What is CPU utilization in Data ONTAP: Scheduling and Monitoring?, How to measure CPU utilization, What are CPU as a compute resource and the CPU domains in ONTAP 9?, Monitoring CPU utilization before ONTAP upgrade
NEW QUESTION # 27
You created a new NetApp ONTAP FlexGroup volume spanning six nodes and 12 aggregates with a total size of 4 TB. You added millions of files to the FlexGroup volume with a flat directory structure totaling 2 TB, and you receive an out of apace error message on your host.
What would cause this error?
Answer: D
Explanation:
The maxdirsize is the maximum size of a directory in a FlexVol or FlexGroup volume. It is determined by the number of inodes allocated to the directory. If the directory contains more files than the maxdirsize can accommodate, then the ONTAP software will return an out of space error message to the host, even if the volume has enough free space. This can happen when a FlexGroup volume has a flat directory structure with millions of files, as the maxdirsize is not automatically adjusted for FlexGroup volumes12. Reference: 1: FlexGroup volumes: Frequently asked questions | NetApp Documentation 2: How to increase the maxdirsize of a FlexVol volume - NetApp Knowledge Base
NEW QUESTION # 28
Your customer has mounted an NFS SVM from a Linux client unci performance is very poor. The customer is certain that they have jumbo frames enabled. They have verified an MTU of 9000 on both the Linux client and the broadcast domain on the NetApp ONTAP 9.8 cluster.
Referring to the exhibit, which ONTAP command will help isolate a possible MTU mismatch?
Answer: D
Explanation:
The ONTAP command that will help isolate a possible MTU mismatch is network ping -lif jumbo_01 -vserver svm1_cluster1 -destination 192.168.0.210 -disallow-fragmentation true -packet-size 5000. This command will send a ping packet of 5000 bytes from the logical interface (LIF) jumbo_01 to the destination IP address 192.168.0.210, without allowing fragmentation. If the ping fails, it means that there is an MTU mismatch somewhere along the path. If the ping succeeds, it means that the MTU is consistent and the problem is elsewhere12. Reference: 1: Check the MTU network setting on the storage system | NetApp Documentation 2: How to adjust the MTU for an ONTAP interface - NetApp Knowledge Base
NEW QUESTION # 29
You recently discovered the error message shown below in your ONTAP logs.
What should be your first action to correct this Issue?
Answer: C
Explanation:
= The error message indicates that the volume my_data_vol is WAFL inconsistent, which means that there is a discrepancy between the data blocks and the metadata in the file system. This can be caused by various factors, such as hardware failures, software bugs, power outages, or network disruptions. The first action to correct this issue is to determine the root cause behind the inconsistency before attempting any recovery procedure, as recommended by the NetApp documentation1. This is because some recovery procedures, such as wafliron or storage takeover, may not work or may cause further damage if the underlying cause is not resolved. For example, if the inconsistency is due to a faulty disk or shelf, running wafliron may not fix the problem and may even corrupt more data. Therefore, it is important to identify and isolate the cause of the inconsistency before taking any further steps. Reference = 1 Volume Showing WAFL Inconsistent - NetApp Knowledge Base
NEW QUESTION # 30
You have connection Issues from a Linux host to an AFF A400 FC LUN. You are asked by support to run the
NetApp sanlun command to provide troubleshooting information.
Which NetApp software package must be installed on the host?
Answer: B
NEW QUESTION # 31
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