Netapp NS0-162 NetApp Certified Data Administrator (ONTAP) Exam Practice Test

When you set up an ONTAP cluster, the cluster setup process automatically creates the admin SVM and the node SVMs for the cluster. The admin SVM represents the cluster and provides cluster-wide management services. The node SVMs represent the individual nodes of the cluster and provide node-specific management services. The data SVMs and the cluster SVMs are not automatically created, but can be created manually or by using the System Manager GUI. The data SVMs provide data access to the clients and applications using various protocols. The cluster SVMs provide intercluster communication and data replication between clusters12. References :- Types of SVMs, ONTAP - Types of SVMs

The exhibit shows the details of VOL_A volume, including its IOPS allocations. The “Peak IOPS Allocation” is listed as “used-space,” and the “Expected IOPS” is 1000IOPS/TB. Since the size of VOL_A is 100GB (or 0.1TB), the expected IOPS would be 100, but it’s essential to consider that the “Absolute Minimum IOPS” is stated as 500IOPS/TB. However, since there’s no provided maximum limit in the exhibit, we can’t definitively state a maximum possible IOPS from this information alone. References :-The answer and explanation are inferred from the provided image as there’s no direct reference available in NetApp Data Administrator (ONTAP) documents and learning resources.

 To join an SVM for CIFS access only to an existing Active Directory domain, you need to perform the following actions:

Domain Name System

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• Create DNS entries for the SVM name and the data LIF IP address on the DNS server that is authoritative for the domain. This enables the domain controller to resolve the SVM name and the data LIF IP address.

• Create a data LIF on the SVM that will be used by the CIFS clients to access the data. The data LIF must have an IP address that belongs to the same subnet as the domain controller or a routable subnet.

• Create NTP entries for the SVM to synchronize the time with the domain controller. The time difference between the SVM and the domain controller must be within five minutes, otherwise the domain join operation will fail.

• You do not need to create export policies or cluster LIFs for CIFS access only. References :- Join a SVM to an Active Directory domain, Create a new SVM with a CIFS volume and share, ONTAP - Joining an SVM to an Active Directory domain

 Temperature Sensitive Storage Efficiency (TSSE) is a method of compressing data based on data “temperature”, or how often the data is used. “Cold” data, or data that is not used often, is recompressed with a higher compression ratio for increased storage efficiency. TSSE is enabled automatically on newly created thinly provisioned AFF volumes, not thick provisioned volumes. TSSE operations on AFF arrays are automatically throttled depending on whether data is hot or cold, to balance performance and efficiency. TSSE is not supported on Cloud Volumes ONTAP or ONTAP Select, as these platforms have different storage characteristics and requirements. References :- Temperature-sensitive storage efficiency overview, How does Temperature Sensitive Storage Efficiency affect SnapMirror?, ONTAP Temperature Sensitive Storage Efficiency (TSSE) – A Simple Introduction

 ONTAP auditing generates binary log files that record the file and folder access events based on the audit policies. By default, ONTAP converts the binary log files to the EVTX file format, which is compatible with Microsoft Event Viewer. The EVTX files are stored in a location specified by the SVM administrator. To view the audit event logs, you can import the EVTX files into Microsoft Event Viewer and filter, sort, and analyze the events. You can also use other tools that support the EVTX file format, such as Microsoft Log Parser or third-party software12. The other options are not valid ways to accomplish this task. References :- View the audit event logs, How to access audit logs?

 A thin-provisioned LUN is one for which storage is not reserved in advance, but allocated dynamically as it is needed. To create a thin-provisioned LUN, the -space-reservation parameter must be set to disabled, which means that the LUN does not reserve any space from the containing volume. The other parameters are either irrelevant or contradictory to thin provisioning. References :- Thin provisioning - NetApp, How to convert a volume or LUN from thick to thin provisioned, ONTAP - Provisioning volumes

The correct action to solve the problem is to update the Selective LUN Map configuration for the LUN mapping. Selective LUN Map (SLM) is a feature that enables you to control which LUNs are visible to which hosts in an ONTAP cluster. SLM reduces the number of paths that are presented to the host and improves the performance and manageability of the SAN environment1. When you perform a volume move, the LUN mapping is automatically updated to include the new node as a destination node, but the old node remains as a source node until the move is completed. This causes ALUA to see twice the number of paths to the LUN, as both nodes are active for the LUN. To avoid this, you need to update the SLM configuration to remove the source node from the LUN mapping after the volume move is done2. Changing the MPIO policy on the host, ensuring that the fabric zoning is correct, or rebooting the host are not actions that would solve the problem, as they do not affect the LUN mapping or the ALUA state. References :- Selective LUN Map overview, How to use Selective LUN Map (SLM) with Volume Move

 ONTAP System Manager and ONTAP CLI are two tools that you can use to monitor system performance in real time. ONTAP System Manager is a web-based interface that provides a graphical view of the cluster performance, including CPU, network, disk, and volume utilization. You can also drill down to view the performance of individual nodes, aggregates, LIFs, and protocols. ONTAP CLI is a command-line interface that provides various commands to view the performance statistics of the cluster, such as sysstat, statistics, qos, and perf. You can use these commands to view the performance metrics in different formats, intervals, and levels of detail. The other tools are not suitable for real-time performance monitoring, as they provide historical or predictive analysis. Active IQ Unified Manager is a tool that collects and analyzes performance data from multiple clusters and provides alerts, reports, and recommendations based on the data. Active IQ Digital Advisor is a tool that provides insights and recommendations for your NetApp systems based on data collected from AutoSupport. References :- Monitor cluster performance, What commands are useful to monitor performance in ONTAP 9?, Analyze performance graphs, NetApp launches monitoring, alerting, and troubleshooting for ONTAP from cloud

 The route is a network configuration that defines how the traffic from a LIF is routed to a destination. The route consists of a destination, a gateway, and a metric. The destination is the IP address or subnet that the LIF wants to reach. The gateway is the IP address of the next-hop router that forwards the traffic to the destination. The metric is a numerical value that indicates the preference of the route. In this scenario, the route for the SVM vs0 has a destination of 0.0.0.0/0, which means any IP address or subnet. The gateway is 10.61.208.1, which is the IP address of the router that connects the LIF to the rest of the network. The metric is 20, which is a relatively low value that indicates a high preference. However, the gateway is incorrect, as it does not match the subnet of the LIF. The LIF has an IP address of 192.0.2.130 and a netmask of 255.255.255.0, which means its subnet is 192.0.2.0/24. The gateway should be an IP address within the same subnet, such as 192.0.2.1. This would allow the LIF to communicate with the router and reach other destinations. The incorrect gateway causes connectivity issues, as the LIF cannot find a valid route to send or receive traffic. To resolve this issue, the route needs to be modified to reflect the correct gateway using the network route create or network route modify commands or the System Manager GUI12. References :- Create a route, Modify a route

IPspaces enable you to create multiple logical networks on a single physical network. Each IPspace contains a set of ports, broadcast domains, subnets, and routing groups that are isolated from other IPspaces. By using IPspaces, you can avoid IP address conflicts and routing issues when connecting to different networks that use the same or overlapping IP subnets. In this scenario, you can create a separate IPspace for the intercluster LIFs of AcmeClusOl and WidgetsClusOl, and assign them different subnets that do not overlap with the local subnet at your company. This way, the clusters can communicate with each other without interference from the local network traffic. References :- ONTAP 9 Network Management Guide, ONTAP 9 Cluster and SVM Peering Express Guide, ONTAP 9 Cluster and SVM Peering Guide

 Active IQ Unified Manager, Cloud Insights, and Active IQ OneCollect are three NetApp products that can export the monthly performance data of your ONTAP 9.8 cluster to a CSV file for further processing. Active IQ Unified Manager is a web-based application that monitors and manages the health and performance of your ONTAP clusters. You can export data to CSV and PDF files for reporting from the Active IQ Unified Manager web UI1. Cloud Insights is a cloud-based monitoring and optimization tool that provides insights into your hybrid cloud infrastructure. You can export data to CSV files from the Cloud Insights dashboard. Active IQ OneCollect is a data collection tool that gathers configuration and performance data from your NetApp and third-party storage systems. You can export data to CSV files from the Active IQ OneCollect GUI. References :- Performance monitoring and management overview, Exporting data to CSV files for reporting, Exporting data to CSV and PDF files for reporting, [Exporting data to CSV files], [Exporting data to CSV files]

The performance capacity report shows the current and optimal performance metrics for the CPU resource on each node of the cluster. The current metrics reflect the actual workload on the resource, while the optimal metrics reflect the workload that would result in the best performance. The performance capacity, or headroom, is the difference between the current and optimal metrics. A low or negative headroom indicates that the resource is over utilized and may experience performance degradation. The exhibit shows that both nodes have negative headroom for the CPU resource, which means that the CPU has been over utilized. A storage failover event will cause performance issues, as the surviving node will have to handle the workload of both nodes, which will further reduce the headroom and increase the latency. References :- Identify remaining performance capacity, What is Performance Capacity in ONTAP 9 and Unified Manager?

The availability of the remote cluster in the peering relationship shows “Partial” only if some nodes in the local cluster are not able to contact some or all nodes in the peer cluster1. This means that there is a network connectivity issue between some of the intercluster LIFs on the local and remote clusters. This can affect the data transfer and API communication between the clusters. The other options are not correct because they would result in different availability statuses, such as Unavailable, Pending, or Unidentified1. References :- cluster peer show, Cluster peering issues after upgrade to ONTAP 9.11.1, Output of “cluster peer health show” intermittently displays “session_reachable” for data ping

The Active IQ Web site is a tool that provides insights and recommendations for your NetApp systems based on data collected from AutoSupport. You can use the Active IQ Web site to accomplish the task of locating empty SAS ports remotely by accessing the Inventory page and selecting the HA pair. You can then view the details of each node and see the port utilization and availability for each SAS port. The other tools are not suitable for this task because they do not provide the specific information about the SAS ports of your HA pair. ONTAP System Manager is a web-based interface for managing ONTAP clusters, but it does not show the port utilization and availability for SAS ports. Hardware Universe is a tool that provides information about the compatibility and specifications of NetApp hardware products, but it does not show the port utilization and availability for SAS ports. Interoperability Matrix Tool is a tool that provides information about the supported configurations and software versions for NetApp products, but it does not show the port utilization and availability for SAS ports. References :- Active IQ Web - NetApp, Active IQ Inventory - NetApp, Active IQ Documentation - NetApp

 You can use ONTAP System Manager or the command line interface to disable the unused Ethernet ports in an ONTAP 9.8 cluster. ONTAP System Manager is a web-based graphical user interface that enables you to manage storage systems, clusters, and resources. The command line interface is a text-based interface that enables you to perform administrative tasks using commands. Both methods allow you to modify the network port settings and remove the ports from the broadcast domain. Active IQ Config Advisor and Active IQ Unified Manager are not methods to disable the unused Ethernet ports, but tools to monitor and optimize the cluster performance and configuration. References :- Monitor the reachability of network ports in ONTAP 9.8 and later, Map network ports using ONTAP 9.8 or later, Map network ports using ONTAP 9.7 or earlier

To enable Active Directory (AD) domain users and groups to access the cluster or SVMs for administration purposes, you need to set up an authentication tunnel through an SVM that has a CIFS server created and joined to the domain. This can be either an existing CIFS SVM or a dedicated admin SVM. You also need to use the vserver active-directory create command to create a computer account on the domain for the SVM that you want to access. This command works for both CIFS and non-CIFS SVMs. Configuring an authentication tunnel through anadmin SVM or an existing CIFS SVM are both valid actions to accomplish this task. However, using the vserver active-directory create command to create a computer account on the domain for a CIFS SVM is not necessary, as this is done automatically when the CIFS server is created and joined to the domain. References :- Configure Active Directory domain controller access overview, How to configure AD authentication for cluster when CIFS is not licensed, Create a CIFS server

 To increase access security in both NFS and iSCSI environments, you can use Kerberos and CHAP as authentication methods. Kerberos is a network authentication protocol that uses tickets to provide mutual authentication between clients and servers. CHAP is a challenge-response protocol that verifies the identity of a peer by using a shared secret. ONTAP supports Kerberos for NFS exports, which allows you to secure NFS traffic with encryption and integrity checking. ONTAP also supports CHAP for iSCSI LUN access, which prevents unauthorized access to iSCSI targets and initiators. References :- NFS security overview, iSCSI Security Configuration

To deploy a 2-node ONTAP Select cluster with synchronous mirroring and high availability, you need to take the following two steps:

• Ensure that the ONTAP Select Deploy VM resides at a third location other than the two data centers. This is because the Deploy VM includes a mediator service that connects to each node in the active two-node clusters to monitor the HA pairs and assist in managing failures. The mediator service maintains the HA state information at a dedicated iSCSI target associated with each two-node cluster. If the Deploy VM is halted or fails, the mediator service is unavailable and HA capability is lost for the two-node clusters1.
• Use ONTAP Mediator service to make sure that you have a quorum for the two nodes. When a cluster consists of two nodes, it is not possible to achieve the quorum required when a node fails or loses communication. To resolve these types of split-brain situations, the mediator service helps the surviving node to determine whether it should take over the partner node or halt itself1.
• You do not need to install the SnapMirror Sync license on the cluster, as it is not required for synchronous mirroring. You can use the SnapMirror Synchronous (SM-S) feature, which is included in the ONTAP Select Premium license, to create a zero-recovery point objective (RPO) mirror relationship between two volumes on different clusters2.
• You do not need to use ONTAP Select Deploy to install the nodes on the physical hardware, as ONTAP Select is a software-defined storage solution that runs on VMware ESXi hosts. You can use ONTAP Select Deploy to create and manage ONTAP Select clusters and nodes on the virtualized hardware3. References :- ONTAP Select two-node clusters with HA, SnapMirror Synchronous overview, Deploy an ONTAP Select cluster using the CLI.

 To increase the number of files that can be created in a volume, you need to increase the number of files permitted on the volume and increase the size of the volume. The number of files permitted on the volume is determined by the maxfiles parameter, which affects the maximum number of public inodes the volume can have. You can change the maxfiles parameter using the maxfiles command. The size of the volume is determined by the total space allocated to the volume. You can increase the size of the volume using the vol size command. Increasing the number of files permitted and the size of the volume will allow more files to be created in the volume, as long as there is enough free space and inodes available. References :- How to increase the maximum number of files for a flexible volume, Changing the maximum number of files allowed in a volume, [Increasing the size of a volume]

 To troubleshoot the issue of iSCSI LUNs not visible on the host, you should verify that the iSCSI data protocol has been enabled on the ports and that the controller has not been taken over. If the iSCSI data protocol is disabled on the ports, the storage system will not accept iSCSI connections or requests over those ports. If the controller has been taken over by its partner, the iSCSI LUNs on the taken-over node will not be available to the host. You can use the vserver iscsi connection show command to check the status of the iSCSI connections and the storage failover show command to check the status of the controller. References :- Troubleshoot iSCSI LUNs not visible on the host, vserver iscsi connection show, storage failover show

FC switch zoning is the process of assigning a set of WWPNs to a zone, which is a group of ports that can communicate with each other. Zoning is required for FC SAN hosts to access LUNs on the SVM. If the zoning is not done correctly, the host might not be able to discover the LUNs or might see LUNs that belong to other hosts. Therefore, FC switch zoning is a possible cause of the issue with SVM eplc_fcp when mapping a namespace to a host. References :- Configure an SVM for FC, Configure FC protocol and FCoE protocol on SVMs with System Manager

LACP (Link Aggregation Control Protocol) is a protocol that enables the bundling of several physical ports into a single logical port to provide higher bandwidth, load balancing, and redundancy. An interface group is a network component that supports LACP on NetApp clusters. An interface group can combine two or more physical ports into a single logical port and can be configured with different policies, such as multimode, multimode_lacp, or singlemode. A VLAN (Virtual Local Area Network) is a logical segmentation of a network that allows devices to communicate as if they were on the same physical network, regardless of their physical location. A broadcast domain is a logical division of a network in which all nodes can reach each other by broadcasting. A failover group is a set of network ports that can take over the traffic of another port in case of a failure. References :- Combine physical ports to create interface groups, Configure LACP for optimal storage performance, What are the recommended settings for cluster network ports?, Port Troubleshooting Resolution Guide, Create Interface Group MODE LACP

 NetApp’s All SAN Array (ASA) is a dedicated SAN-only solution that provides high performance and availability for mission-critical applications. ASA supports up to 2-node clusters, which can be either HA pairs or MetroCluster configurations. ASA does not support single node, 12-node, or 24-node clusters, as these are reserved for ONTAP systems that support both SAN and NAS protocols. References :- All-Flash SAN Array (ASA) A-Series Systems, All-Flash SAN Array software configuration overview, ASA system does not report as SAN optimized

 The number of ISCSI LIFs that will be created from the SVM setup wizard, as shown in the exhibit, is 16. This is because the LIFs per node field is set to 2, and there are 4 nodes in the cluster. Therefore, the total number of LIFs is 2 x 4 8 for each SVM, and since there are two SVMs, the total number of LIFs is 8 x 2 16. The other options are incorrect because they do not match the calculation based on the exhibit. References :- Configure an SVM for iSCSI, Configure iSCSI on an existing SVM

 Virtual Storage Console (VSC) is a vCenter plug-in that provides end-to-end storage management for VMware environments that run on NetApp storage systems. VSC enables you to configure the ESXi host multipathing and HBA timeout settings according to the NetApp best practices. You can use the Set Recommended Values option in the ONTAP tools menu to apply the recommended settings for your system. VSC also provides other features such as provisioning, backup and restore, monitoring, and optimization of NetApp storage forVMware. References :- Virtual Storage Console for VMware vSphere, Configure ESXi server multipathing and timeout settings