NS0-522 Exam Dumps : NetApp Implementation Engineer - SAN ONTAP Exam

ONTAP igroups can be created with an fcp, iscsi, or mixed protocol type. An iSCSI igroup is therefore valid for presenting the existing LUN specifically to the new iSCSI host. A mixed igroup is also valid because it permits both Fibre Channel and iSCSI initiators and can be used when access to a LUN involves both protocol types. ONTAP permits an igroup to be mapped to multiple LUNs and a LUN to be presented through appropriate SAN igroup mappings. Creating another FC-only igroup would not accommodate the new iSCSI initiator. A subsystem belongs to the NVMe architecture and is used to map NVMe namespaces to NVMe hosts; it is not used for FCP or iSCSI LUN presentation. Thus, both iSCSI and mixed igroups are valid configurations for the requirement.

After deleting a LUN, if the space does not show as available, performing space reclamation is necessary. Space reclamation involves identifying and reclaiming unused space on the storage system, making it available for new data. This process ensures that the deleted LUN ' s space is properly freed up and reflected in the available storage capacity.

For more details, refer to:

NetApp Documentation on Space Reclamation

NetApp Community on Free Space Reclamation

For synchronous data replication between two sites with automatic failover in case of a site disaster for SAN workloads, the two NetApp features that provide these capabilities are SnapMirror Synchronous and MetroCluster IP.

SnapMirror Synchronous: This feature provides volume-granular, synchronous replication with zero RPO (Recovery Point Objective), ensuring that data is mirrored in real-time to a secondary site. This setup supports automatic failover, maintaining data availability even during site failures​

MetroCluster IP: This solution provides synchronous replication and combines high availability and disaster recovery capabilities. MetroCluster IP uses IP networking to extend the distance over which replication can occur and supports automatic failover and failback, making it suitable for critical SAN workloads