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

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 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

 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