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Free NS0-521 Exam Braindumps (page: 6)

Page 5 of 18
PDF with 65 Questions

A storage administrator recently implemented ISCSI SAN in a customer environment.
Which two actions should be done to ensure the best performance? (Choose two.)

  1. Connect host and storage ports to the same switches.
  2. Decrease the default queue depth on the host to eight.
  3. Zone the host by using the host WWPNs.
  4. Configure Jumbo frames In the entire data path.

Answer(s): A,D

Explanation:

To ensure the best performance in an iSCSI SAN implementation:
Connect host and storage ports to the same switches: This minimizes latency and maximizes the efficiency of data paths by ensuring direct connections within the same network segment. Configure Jumbo frames in the entire data path: Setting a larger Maximum Transmission Unit (MTU) size reduces the overhead for processing each packet, thus improving overall network performance. Ensuring Jumbo frames are configured end-to-end in the data path is crucial for optimal performance.
For further details, check:
NetApp Best Practices for iSCSI
NetApp Community Discussion on iSCSI Performance



After deleting a LUN, an administrator notices that the space does not show as available.
What needs to be done to reclaim the space?

  1. UnmaptheLUN.
  2. Delete the volume snapshots.
  3. Purge the recovery queue.
  4. Perform space reclamation.

Answer(s): D

Explanation:

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



When using tagged VLANs on Cisco Nexus switches for NVMe over TCP, which two changes must be made to enable jumbo frames? (Choose two.)

  1. Modify the Cisco Nexus switches to use an MTU of 9216.
  2. Modify the appropriate broadcast domain in NetApp ONTAP software to use an MTU of 9000.
  3. Modify the appropriate broadcast domain in NetApp ONTAP software to use an MTU of 9216.
  4. Modify the Cisco Nexus switches to use an MTU of 9000.

Answer(s): A,C

Explanation:

For enabling jumbo frames on Cisco Nexus switches for NVMe over TCP with tagged VLANs, the following changes are required:
Modify the Cisco Nexus switches to use an MTU of 9216: Setting the MTU to 9216 ensures that the network can handle jumbo frames, reducing the number of packets needed for large data transfers and thus improving performance.
Modify the appropriate broadcast domain in NetApp ONTAP software to use an MTU of 9216: This setting must match the network configuration to ensure end-to-end support for jumbo frames, which is essential for optimizing performance in NVMe over TCP environments.
For additional information, refer to:
NetApp Documentation on NVMe over TCP
Cisco Documentation on Jumbo Frames



On a two-node NetApp AFF ASA cluster, what is the recommended minimum number of paths for a SAN environment from the client host perspective?

  1. 2
  2. 8
  3. 4
  4. 16

Answer(s): C

Explanation:

In a two-node NetApp AFF ASA cluster, the recommended minimum number of paths for a SAN environment from the client host perspective is 4. This configuration ensures high availability and load balancing, which are critical for maintaining performance and resilience in a SAN environment. Each host should have at least two paths to each controller to achieve this setup.
For more detailed information, you can refer to:
NetApp SAN Configuration
NetApp All-Flash SAN Array Documentation






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