Netapp NS0-162 Dumps

The easiest and fastest way to restore a single file from a Snapshot copy is to use the Windows Shadow Copy Client, which allows the user to access and restore Data ONTAP Snapshot files from the Previous Versions tab in the Properties menu. This does not require any CLI commands or ONTAP System Manager operations. References :- Restoring files from Snapshot copies, Restore a single file from a Snapshot copy

 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

 The correct way to warm the cache before clients access the cache volume for the first time is to prepopulate the cache volume with data from the origin volume using the flexcache prepopulate start command. This command copies the data blocks from the origin volume to the cache volume in the background, without affecting the client access to the origin volume. The other options are not valid for this scenario because:

• Enabling block-level invalidation using the volume flexcache origin config modify command does not warm the cache, but rather allows the origin volume to invalidate the cached data blocks when they are modified or deleted.
• Copying the data from the origin volume to the cache volume with the NetApp XCP Migration Tool is not recommended, as it can cause data inconsistency and performance degradation. XCP is a data migration tool that can copy data between different types of volumes, such as FlexVol and FlexGroup, but not between FlexCache and origin volumes.
• Synchronizing the origin and cache first with the volume flexcache sync-properties command does not warm the cache, but rather ensures that the cache volume inherits the properties of the origin volume, such as size, security style, and export policy. References :- Prepopulate a FlexCache volume, FlexCache volume concepts, FlexCache volume best practices

 NetApp ONTAP Select is a software-only version of ONTAP that can run on commodity servers with direct-attached storage. It supports both block and file protocols, including NFS, NVMe, and CIFS. SCSI and FCP are not supported by ONTAP Select. References :- ONTAP Select overview, Client protocols, Software-Defined Storage with ONTAP Select

ONTAP System Manager is a web-based graphical user interface (GUI) that enables you to manage and monitor your ONTAP cluster. You can use ONTAP System Manager to add protocol licenses to your cluster by following a simple and easy workflow. The other management tools are not designed for adding protocol licenses to an ONTAP cluster. NetApp Cloud Manager is a cloud-based service that helps you deploy and manage NetApp cloud data services. Active IQ Unified Manager is a software application that provides performance monitoring and health management for ONTAP clusters. Active IQ Config Advisor is a tool that scans and validates the configuration of NetApp storage systems and hosts. References :- Configure ONTAP on a new cluster with System Manager, ONTAP System Manager overview, NetApp Cloud Manager overview, Active IQ Unified Manager overview, Active IQ Config Advisor overview

 To make the destination NAS volume writable, you need to break the SnapMirror relationship using the snapmirror break command from the destination cluster, and then use the volume mount command to mount the NAS volume in the NFS namespace. Breaking the SnapMirror relationship will make the destination volume read/write and allow clients to access the latest Snapshot copy. Mounting the volume in the NFS namespace will make the volume visible to the clients and enable them to access the data. The other options are not correct because:

• Deleting the SnapMirror relationship from the destination cluster will not make the destination volume writable, but rather remove the relationship configuration and history. This will prevent future resynchronization or updates of the relationship.
• Breaking the SnapMirror relationship using the snapmirror break command from the source cluster will not work, because the source cluster is unavailable due to networking issues. The command must be run from the destination cluster. References :- Break the SnapMirror relationship, Mount a volume in the namespace

 FabricPool is a feature of ONTAP that allows you to tier cold data from a local tier (aggregate) to a capacity tier (object storage) in the cloud or on-premises. ONTAP 9.8 supports four types of capacity tiers: AWS S3, Azure Blob, Google Cloud Storage, and ONTAP S3. StorageGRID is a NetApp product that provides on-premises S3 object storage. Therefore, both StorageGRID and ONTAP S3 are supported as capacity tiers for FabricPool aggregates in ONTAP 9.8. SWIFT Object Store and NFS Export are not supported as capacity tiers for FabricPool aggregates. References :- Considerations and requirements for using FabricPool, Storage Efficiencies, FabricPool with StorageGRID Recommendation Guide

 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

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?

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

File System Analytics is a native ONTAP feature that collects and aggregates data in real time, providing detailed information concerning file and directory count, file-age histograms, capacity use, and other parameters1. You can use ONTAP System Manager to visualize the data using industry standard measures such as hot, warm, and cold2. File System Analytics is available on ONTAP 9.8 and later versions3. Quality of Service, Logical Space Reporting, and volume autosizeare not features that report real-time file counts, but rather features that manage performance, efficiency, and capacity of volumes45 . References :- TR-4867: Best Practice Guidelines for ONTAP FIle System Analytics, File System Analytics overview, File System Analytics feature availability, [Quality of Service overview], [Logical space reporting overview], [Volume autosize overview]

 To find the highest latency seen on restore, you need to look at the output of the table that shows the latency measurements for different operations and sizes. The highest latency is 10021 ms, which is the maximum latency for the GET operation with 8KB size. This means that when the users recover files with the Windows Previous Versions tab, they are reading data from the cloud tier that has been tiered using the snapshot-only policy, which causes high latency and slow restores.

• The other latencies are not correct, as they are lower than 10021 ms. The maximum latency for the PUT operation with 4MB size is 10500 ms, but this is not related to the restore operation, as it is writing data to the cloud tier. The maximum latency for the GET operation with 4KB size is 9591 ms, which is slightly lower than 10021 ms. The maximum latency for the GET operation with 32KB size is 7889 ms, which is much lower than 10021 ms. The maximum latency for the GET operation with 256KB size is 7838 ms, which is also much lower than 10021 ms. References :- FabricPool overview, FabricPool requirements, FabricPool best practices, High READ Latency from the fabric pool aggregate.

The point-to-point topology is the simplest and most common way to connect a single host to a storage system using FC. It allows direct communication between two devices without any intermediate devices. The UTA2 ports on the AFF A220 cluster support the point-to-point topology when configured as FC ports. Therefore, to connect a single Windows host directly to the storage using FC, you need to use the point-to-point topology on all ports and make sure that the host and the storage have compatible FC settings, such as speed, WWPN, and zoning. The other options are not correct because they involve additional devices or topologies that are not necessary or supported for this scenario. References :- Quick guide - AFF A220, Detailed guide - AFF A220, ONTAP 9 SAN Configuration Guide

The security method that would be used to authenticate targets and initiators in an ISCSI environment is CHAP. CHAP stands for Challenge Handshake Authentication Protocol, and it is a method that validates the identity of targets and initiators during the initial link. CHAP uses a shared secret (a password) that is exchanged between the target and the initiator in a challenge-response manner. CHAP can be used in both one-way and mutual modes, depending on whether both parties need to authenticate each other or not. The other options are not valid for this scenario because:

• NIS is a network information service that provides centralized management of user accounts and host names, but it does not provide authentication for ISCSI devices.
• LDAP is a protocol for accessing and managing directory services, such as user and group information, but it does not provide authentication for ISCSI devices.
• /etc/hosts is a file that maps host names to IP addresses, but it does not provide authentication for ISCSI devices. References :- How iSCSI authentication works, Securing iSCSI Devices, Configure iSCSI authentication

 The problem is that the NFS export policy only allows access to the IP range of 192.168.10.11-12, which does not include HOST 3’s IP address of 192.168.10.13. Therefore, the ESXi host cannot mount the NFS datastore. To solve the problem, you need to add HOST 3’s IP address to the NFS export policy, or modify the IP range to include it. This will grant the ESXi host the permission to access the NFS datastore. References :- ONTAP 9 Network Management Guide, ONTAP 9 NFS Reference, Troubleshooting NFS datastore connectivity issues (1003967)

The auto-revert option determines whether a LIF automatically reverts to its home port after a failover event. If this option is set to true, the LIF will revert to its home port when it becomes available. If this option is set to false, the LIF will remain on the failover port until manually reverted. In this scenario, the cluster LIFs are not on their home ports after an ONTAP upgrade, which might have triggered a failover event. Therefore, setting the auto-revert option to true would change this outcome and ensure that the LIFs return to their home ports after the upgrade. References :- network interface modify, Verify all LIFS are on home ports after ONTAP upgrade

The space allocation option is a LUN attribute that enables the host to communicate with the storage system about the blocks that are no longer in use by the host file system. When the space allocation option is enabled, the host sends SCSI UNMAP commands to the storage system when files are deleted on the disk. The storage system then reclaims the space from the thin-provisioned LUN and makes it available for other LUNs or volumes. This process is also known as space reclamation or hole punching. If the space allocation option is disabled, the host does not send SCSI UNMAP commands and the storage system does not reclaim the space from the thin-provisioned LUN, resulting in a discrepancy between the host and the storage system. References :- Space reclamation, Enable or disable the space allocation option for a LUN

 According to the NetApp best practices, flow control should be disabled on data network ports and cluster network ports using 10GbE Ethernet. This is because flow control can cause excessive pause frames, xon/xoff frames, or packets being re-queued, which can affect the network performance and TCP throughput. Flow control works at the physical link layer and does not consider the upper level protocols. Therefore, it is recommended to disable flow control end-to-end on both data and cluster network ports for optimal performance. References :- How to modify flow control on cluster port in ONTAP, What are the flow control best practices for Ethernet?, Configure your network for best performance

The igroup is a logical grouping of initiators that can access a set of LUNs. The igroup must contain the IQNs (iSCSI Qualified Names) or WWPNs (World Wide Port Names) of the initiators that need to access the LUNs. In this scenario, the igroup named “ESX” has the iSCSI protocol and the VMware OS type, but it does not have any initiators listed. This means that the VMware hosts cannot authenticate and connect to the LUNs in the SVM. To resolve this issue, the igroup must be populated with the correct initiators that match the VMware hosts. This can be done by using the igroup add command or the System Manager GUI12. References :- Create an igroup, Add initiators to an igroup

The space guarantee setting determines how much space is reserved in the aggregate for the volume. A space guarantee of “none” means that no space is reserved for the volume, and the volume can use any available space in the aggregate. This approach to space management is called thin provisioning. This setting would prevent the hosting aggregates from showing a decrease in available space when creating new volumes, as long as the aggregate is not overcommitted. References :- How volume guarantees work with FlexVol volumes, How you set space guarantees for new or existing volumes, What is the impact of changing volume space-guarantee from “volume” to “none”?

 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

To cache on-premises ONTAP volumes into the cloud with Cloud Volumes ONTAP, you need to use the FlexCache feature, which creates a writable, persistent cache of a data volume that is consistent and coherent with its original data set and stored in a remote location. FlexCache supports both SMB and NFS protocols, which are the traditional file access protocols for Windows and UNIX/Linux systems respectively. You can control file access using UNIX-style permissions, NTFS-style permissions, or a mix of both. Clients can access the same files using both SMB and NFS protocols123.

• NVMe and iSCSI are not supported by FlexCache, as they are block protocols that run on standard Ethernet networks. FlexCache is a file-based solution that works with file protocols only12. References :- Client protocols | NetApp Documentation, Client protocols - NetApp, Cloud Volumes ONTAP for AWS: Storage for the Cloud Era.

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

Cloud Backup Service is an ONTAP native solution that supports using SnapMirror to mirror your data to public cloud object storage. Cloud Backup Service enables you to back up your ONTAP volumes to Amazon S3 or Azure Blob storage using SnapMirror Cloud technology. You can also restore your data from cloud storage to a different volume or cluster. Cloud Backup Service leverages SnapDiff V3, which is a feature that reduces the amount of data transferred and stored in the cloud by only sending the changed blocks between snapshots. Cloud Backup Service also preserves the ONTAP storage efficiencies and encryption in the cloud. The other options are not correct because they are not ONTAP native solutions or they do not support using SnapMirror to mirror your data to public cloud object storage. Flash Pool is a feature that combines SSDs and HDDs in a hybrid aggregate to improve performance and capacity. Cloud Compliance service is a feature that provides data privacy and security insights for your cloud data. Cloud Sync is a service that enables data synchronization between different sources and destinations, such as NFS, SMB, S3, Azure Blob, Google Cloud Storage, and more. References :- Back up data to the cloud using SnapMirror, A New Backup Architecture for NAS Systems - SnapDiff V3, SnapMirror in the Cloud: New Uses for NetApp Data Replication

When you perform an upgrade using ONTAP System Manager 9.8, you can use the automated nondisruptive update (ANDU) feature, which simplifies and streamlines the update process. The latest available images will appear in the ONTAP System Manager interface, and you can select the image you want to install. The update history is available within the ONTAP System Manager interface, and you can view the status and progress of the update. You do not need to manually upload the images to the cluster or download them from the NetApp Support site, as ONTAP System Manager will automatically download and upload the images as needed. References :- Automated nondisruptive ONTAP upgrade, How to Upgrade to ONTAP 9.8

 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