Netapp NS0-162 - NetApp Certified Data Administrator (ONTAP)

When a LUN has space reservations disabled (a non-space-reserved LUN), and its containing volume has no space guarantee, ONTAP reports the volume usage based on the actual data written to the LUN, not the LUN size. Therefore, ONTAP reports that the volume is using 10 GB of its containing aggregate, and the volume is 10% full. References :- Understanding space reservations for LUNs in System Manager, Recommended volume and file or LUN configuration combinations overview

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]

SnapDiff is an internal ONTAP engine that quickly identifies the file and directory differences between two Snapshot copies. SnapDiff can be used by backup applications to perform incremental backups, by reducing the amount of data that needs to be scanned and transferred. SnapDiff can also be used by other ONTAP features, such as SnapMirror and SnapVault, to optimize data replication and protection. References :- How incremental tape backup uses SnapDiff and Snapshot copies, Commvault Adds Features to Fortify Ransomware Security, Rubrik | Better NAS Backup RPO with Changelist Snapshots, Snapshot copies

To protect the data on your ONTAP C190 cluster using the native SnapMirror technology, you need to have two products that support SnapMirror replication and can run ONTAP software. The following two products would satisfy this request:

ONTAP Select: This is a software-defined storage solution that runs on VMware ESXi hosts and can create and manage ONTAP clusters and nodes on the virtualized hardware. ONTAP Select supports SnapMirror replication for data protection and disaster recovery between ONTAP Select clusters or between ONTAP Select and other ONTAP systems12.

Cloud Volumes ONTAP: This is a software-only storage service that runs on public cloud platforms such as AWS, Azure, and Google Cloud and provides enterprise-grade data management features such as SnapMirror replication. Cloud Volumes ONTAP supports SnapMirror replication for data protection and disaster recovery between Cloud Volumes ONTAP instances or between Cloud Volumes ONTAP and other ONTAP systems34.

Cloud Volumes Service for AWS and Azure NetApp Files are not the products that can satisfy this request, as they are fully managed cloud storage services that do not run ONTAP softwareand do not support SnapMirror replication. They provide native cloud replication features such as AWS Backup and Azure Backup, which are different from SnapMirror technology56. References :- ONTAP Select overview, SnapMirror replication for ONTAP Select, Cloud Volumes ONTAP overview, SnapMirror replication for Cloud Volumes ONTAP, Cloud Volumes Service for AWS overview, Azure NetApp Files overview.

Two-factor authentication (2FA) is a security mechanism that requires users to provide two pieces of evidence to prove their identity before accessing a system. ONTAP supports two methods of 2FA: public key and SAML. Public key authentication uses a pair of cryptographic keys (one public and one private) to verify the user’s identity. SAML authentication uses a web-based protocol that allows users to log in to an application by using a secure identity provider (IdP). Both methods are required to set up 2FA for the ONTAP CLI. IPsec and password are not2FA methods, as they only provide one factor of authentication. References :- Set up multifactor authentication, TR-4647: Multifactor Authentication in ONTAP

 You can use either XCP or the in-place conversion feature to move data from a FlexVol volume to a FlexGroup volume. XCP is a data migration tool that can copy data between different types of volumes, such as FlexVol and FlexGroup. The in-place conversion feature, introduced in ONTAP 9.7, allows you to convert a FlexVol volume to a FlexGroup volume without requiring a data copy or additional disk space. However, you cannot convert a FlexGroup volume back to a FlexVol volume. SnapMirror is not a valid option for this scenario, because it does not support replicating data from FlexVol to FlexGroup volumes. A FlexVol to FlexGroup conversion is supported, but only for transitioned volumes starting from ONTAP 9.8. References :- Converting FlexVol volumes to FlexGroup volumes overview, Can a FlexGroup be converted to a FlexVol?, Can I convert a Flexvol to FlexGroup without rewarming the tiered data?

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

 The broadcast-domain split command allows you to create a new broadcast domain by moving one or more ports from an existing broadcast domain to the new one. In this scenario, you can use this command to move the e0e and e0c ports from the Default broadcast domain to a new broadcast domain in the same IPspace. This would satisfy the requirement of creating a new broadcast domain with the specified ports. The other options are not valid for this scenario, as they either create a new broadcast domain without moving any ports (A), merge two existing broadcast domains into one (D), or require a graphical user interface ©. References :- network port broadcast-domain split, Create a broadcast domain