NS0-162 Exam Dumps : NetApp Certified Data Administrator (ONTAP)

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 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

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.