Free NetApp NS0-593 Exam Actual Questions

The questions for NS0-593 were last updated On Dec 16, 2024

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Question No. 1

A customer reports that while Installing Windows updates on their external Vscan servers, clients could not access any files on their CIF-S SVM. The problem disappeared after the update process was completed. The customer wants to prevent this issue from happening during the next patch window.

In this scenario, what are two ways to accomplish this task? (Choose two.)

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Correct Answer: B, D

Updating the Vscan servers one at a time can prevent the clients from losing access to the files on the CIFS SVM, as there will always be at least one Vscan server available for scanning. Disabling the -scan-mandatory flag in the Vscan policy can also avoid the issue, as it allows the clients to access the files even if there are no Vscan servers online, but this may compromise the security of the data. Enabling the -scan-mandatory flag or modifying the CIFS shares to be CA shares will not help, as they do not affect the availability of the Vscan servers or the scanning process.Reference=Vscan server installation and configuration,Update the Vscan On-Access policy configuration for an SVM


Question No. 2

Your customer has deployed a two petabyte NetApp ONTAP FlexGroup volume across their 4-node ONIAP 9.8 cluster. They plan to store over three billion files. They want to prevent file 10 conflicts since files are placed into the FlexGroup volume.

In this scenario, which two NFS SVM parameters should be enabled? (Choose two.)

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Correct Answer: A, D

= To prevent file ID conflicts in a FlexGroup volume, you need to enable 64-bit NFSv3 and NFSv4 identifiers on the SVM that hosts the FlexGroup volume. This allows the SVM to use 64-bit file system IDs (FSIDs) and file IDs, which are unique across the cluster and can accommodate a large number of files. The -v3-64bit-identifiers and -v4-64bit-identifiers parameters enable this feature for NFSv3 and NFSv4 protocols respectively.Reference=Editing FlexGroup volumes,Enabling 64-bit NFSv3 identifiers on an SVM,NetApp ONTAP FlexGroup volumes --- Best practices and implementation guide


Question No. 3

After expanding a two-node AFF A300 cluster with two AFF A700 nodes, you observe latencies when data is accessed indirectly. The system node run -node -command netstat command shows retransmits and packet drops on the LIFs. The AFF A700 nodes with 40 Gbps and the AFF A300 connect with 10 Gbps to the cluster interconnect. You are using Cisco Nexus 3132Q cluster interconnect switches. You just updated to ONTAP 9.8 software.

In this scenario, what is causing this problem?

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Correct Answer: A

A speed mismatch occurs when the cluster ports on different nodes have different speeds, such as 10 Gbps and 40 Gbps1.

A speed mismatch can cause packet loss, retransmits, and latency on the cluster network, especially when data is accessed indirectly, meaning that the node serving the data is different from the node hosting the LIF2.

In this scenario, the AFF A300 nodes have 10 Gbps cluster ports, while the AFF A700 nodes have 40 Gbps cluster ports, creating a speed mismatch on the cluster interconnect34.

The Cisco Nexus 3132Q cluster interconnect switches support both 10 Gbps and 40 Gbps cluster ports, but they have a shallow buffer size of 9 MB per port, which can be easily overwhelmed by the bursty traffic generated by the speed mismatch.

To solve this problem, you need to either upgrade the cluster ports on the AFF A300 nodes to 40 Gbps, or downgrade the cluster ports on the AFF A700 nodes to 10 Gbps, to achieve a homogeneous cluster interconnect1.

Alternatively, you can use QoS policies to limit the bandwidth of the cluster ports to avoid oversubscription and congestion on the cluster interconnect.Reference:

1: Cluster network cabling, ONTAP 9 Documentation Center

2: Cluster Network Latency - Troubleshooting Guide, NetApp Knowledge Base

3: AFF A300 Tech Specs, NetApp

4: AFF A700 Tech Specs, NetApp

[5]: Why do network speed mismatches create problems with shallow buffered switches?, NetApp Knowledge Base

[6]: How to use QoS to limit the bandwidth of cluster ports, NetApp Knowledge Base


Question No. 4

Which two statements about NetApp Cloud Volumes ONTAP licenses ate true? (Choose two.)

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Correct Answer: A, C

Having an Essentials package enables you to convert to another licensing option. This is true because the Essentials package is a capacity-based licensing option that allows you to pay for Cloud Volumes ONTAP per TiB of capacity.You can switch to another capacity-based package or to a Keystone Flex Subscription at any time1.

BYOL licenses are purchased directly from NetApp.This is true because BYOL stands for Bring Your Own License, which means you need to obtain a license from NetApp before deploying Cloud Volumes ONTAP systems in any cloud provider2.

Capacity-based license packages support only single-node configurations.This is false because capacity-based license packages support both single-node and HA configurations1.

AWS Marketplace contracts cannot be mixed with BYOL.This is false because you can mix AWS Marketplace contracts with BYOL as long as the license type matches the instance type3.Reference:1: Cloud Volumes ONTAP licensing | NetApp Documentation2: Set up licensing for Cloud Volumes ONTAP in Google Cloud - NetApp3: Set up licensing for Cloud Volumes ONTAP in AWS - NetApp


Question No. 5

You have a 2-node NetApp FAS2750 switchless cluster with twenty-four 1.8 TB disks that is experiencing performance issues. Upon investigation, you discover several type B consistency points.

Referring to the exhibit, which corrective action would address these consistency points?

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Correct Answer: C

A type B consistency point (CP) is triggered when the NVRAM buffer is full and needs to be flushed to disk.A type B CP indicates that the write workload is higher than the disk throughput, and the system is experiencing back pressure1

A switchless cluster is a cluster configuration that does not use external switches for cluster interconnect and management network.A switchless cluster has lower bandwidth and redundancy than a switched cluster, and is limited to two nodes2

The exhibit shows the output of the sysstat -x command, which displays the system performance statistics in extended mode. The output shows that the system has high CPU utilization, high disk utilization, high NVRAM utilization, and several type B CPs.These are signs of performance issues and resource contention3

The best corrective action to address these consistency points is to add an additional shelf of twenty-four 1.8 TB disks.This will increase the disk capacity and throughput, and reduce the disk utilization and the frequency of type B CPs4

Creating additional data LIFs will not address the consistency points, because the data LIFs are used for data access protocols, not for NVRAM flushing5

Converting the 2-node switchless cluster to a 2-node switched cluster will not address the consistency points, because the cluster interconnect and management network are not related to the disk performance6

Replacing the twenty-four 1.8 TB disks with twelve 4 TB disks will not address the consistency points, because the disk throughput will not increase, and the disk utilization will remain high7


1: Where can I learn more about Consistency Points?- NetApp Knowledge Base2: ONTAP 9 - Cluster and SVM Peering Express Guide - The Open Group3: ONTAP 9 - Commands: Manual Page Reference - The Open Group4: ONTAP 9 - Hardware Universe - The Open Group5: ONTAP 9 - Network Management Guide - The Open Group6: ONTAP 9 - Clustered Data ONTAP Concepts Guide - The Open Group7: ONTAP 9 - Logical Storage Management Guide - The Open Group

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