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  3. NS0-521

Network Appliance NS0-521 Exam (page: 2)
Network Appliance NetApp Certified Implementation Engineer - SAN, ONTAP
Updated on: 31-Mar-2026

Viewing Page 2 of 14
NS0-521 PDF 112 Questions

An administrator has a NetApp AFF cluster with two SVMs serving LUNs. SnapMirror active sync is configured, and a disaster recovery test is planned over the weekend.
Which NetApp ONTAP command will show the status of this test?

  1. snapmirror failover show
  2. network interface failover-groups show
  3. storage failover hwassist show
  4. snapnirror config-replication status show

Answer(s): A

Explanation:

To check the status of a SnapMirror active sync disaster recovery test on a NetApp ONTAP cluster, you would use the command snapmirror failover show. This command provides the necessary details about the failover status, helping administrators verify if the disaster recovery test is proceeding as expected. It displays the status of the failover groups and their readiness, which is essential for confirming the effectiveness of the disaster recovery setup. For more detailed information on SnapMirror commands and their usage, refer to:
NetApp Documentation - SnapMirror Commands(NetApp Community)(NetApp Community).



What configuration must be applied for NVMe/FC?

  1. Create multiple initiator zones and multiple target zones.
  2. Configure igroup and IQN mapping.
  3. Enable NPV on all fabric switches.
  4. Enable NPIV on all fabric switches.

Answer(s): D

Explanation:

When configuring NVMe/FC (NVMe over Fibre Channel), it is necessary to enable N_Port ID Virtualization (NPIV) on all fabric switches. NPIV allows multiple Fibre Channel initiators to share a single physical Fibre Channel port, which is crucial for NVMe/FC environments where efficient utilization of available ports is needed.
NPIV support enables the creation of virtual ports, which can significantly optimize the configuration and management of Fibre Channel fabrics, thus supporting NVMe/FC operations.
For further details, you can refer to:
NetApp Community - NVMe/FC Configuration(NetApp Community).
NetApp Documentation - NVMe Overview(NetApp).



A storage administrator has just completed an ISCSI implementation in a customer environment running VMware and needs to validate that the entire network path supports jumbo frames.
Which action should be taken?

  1. Ping from the host with fragmentation.
  2. Check the VMkernel adapter settings.
  3. Ping from the host without fragmentation.
  4. Check the broadcast domain settings.

Answer(s): A

Explanation:

To validate that the entire network path supports jumbo frames after an iSCSI implementation, you should perform a ping test from the host with fragmentation. This involves using the ping command with specific options to test jumbo frame support:

ping -M do -s 8972 <target_IP>
In this command:
-M do ensures the packets are not fragmented.
-s 8972 sets the packet size to 8972 bytes (9000 bytes MTU minus 28 bytes for the ICMP header). By confirming that the large packets are successfully transmitted without fragmentation, you can validate that the network path, including switches and adapters, supports jumbo frames.
For more details, you can check:
NetApp Documentation - iSCSI Configuration and Best Practices(NetApp)(NetApp).



An administrator installs a new NetApp ONTAP system in a customer's SAN environment. The customer wants to confirm that ALUA correctly changes the path states between Active/Optimized and Active/Nonoptimized.
Which event causes ALUA to change the path states?

  1. Shut down all FC LIFs on the HA partner node.
  2. Move the containing volume to the HA partner node.
  3. Shut down one FC LIF.
  4. Disconnect one FC cable on the node hosting the LUN.

Answer(s): A

Explanation:

ALUA (Asymmetric Logical Unit Access) is a protocol used in SAN environments to manage paths between a host and its storage. It enables the host to recognize and manage paths to the LUNs more efficiently by designating paths as either "Active/Optimized" or "Active/Nonoptimized". A significant event, such as shutting down all FC LIFs on the HA partner node, will trigger ALUA to change the path states. This action effectively causes the storage paths to transition from the HA partner node to the local node, switching the path states from Active/Nonoptimized to Active/Optimized on the paths that remain active.
For more information, you can refer to:
NetApp Community Discussion on ALUA
NetApp Documentation on ALUA



An engineer Is implementing a data migration scenario for a customer who has multiple FC LUNs across multiple third-party SAN arrays. The engineer wants to use Foreign LUN Import (FLI) for the migration.
What is a requirement on the destination NetApp ONTAP cluster for FLI?

  1. A valid SnapMirror license
  2. At least one FC port in initiator mode
  3. A valid NetApp XCP license
  4. At least one FC port in target mode

Answer(s): D

Explanation:

When using Foreign LUN Import (FLI) for migrating LUNs from third-party SAN arrays to a NetApp ONTAP system, one of the requirements is to have at least one Fibre Channel (FC) port configured in target mode on the destination NetApp ONTAP cluster. This configuration is necessary to facilitate the migration process as the target mode port will accept and manage incoming data from the source SAN arrays.
For additional details, refer to:
NetApp Documentation on FLI



Viewing Page 2 of 14



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