NS0-521: NetApp Certified Implementation Engineer - SAN Specialist, ONTAP

ONTAP supports up to two NVMe LIFs per node, including NVMe/TCP LIFs. FC-NVMe and FCP can share a compatible FC physical port, and ONTAP can support both SCSI and NVMe protocols in the same SVM. NVMe/TCP does not require a 32 Gbps minimum link speed.

All-Flash SAN Array (ASA) platforms support automatic iSCSI LIF failover. During a storage failover, the iSCSI LIF can migrate from its home node or port to its HA partner node or port and return after the failover completes.

SnapMirror active sync uses ALUA to present optimized paths to the controllers serving the active primary storage copy and active/non-optimized paths through the remote secondary copy. A two-node ASA configuration with four paths to each cluster therefore presents four active/optimized and four active/unoptimized paths to the ESXi host.

A portset limits the LIFs through which initiators in a bound igroup can access mapped LUNs. lun portset show displays the LIFs in each portset and the igroups bound to that portset, which verifies the allowed igroup visibility for each LIF.

The space-allocation setting enables T10 SCSI thin-provisioning support on a LUN, allowing host-side capabilities such as LUN space reclamation and space monitoring.