Network Appliance NS0-521 Practice Test - Questions Answers, Page 4

To manage space automatically for a volume containing a LUN with fast-growing data, enabling automatic resizing on the volume is recommended. This feature allows the volume to grow dynamically as needed, accommodating the fluctuating data size without manual intervention. This helps in managing storage efficiently and ensures that the application has the required space.

For further details, refer to:

NetApp Documentation on Volume Management

NetApp Community Discussion on Automatic Resizing

For a successful deployment of a switchless HA pair with two NetApp DS224C shelves in an already populated rack, it is crucial to verify:

Rack units: Ensure that there are enough rack units available to accommodate the new shelves and any associated equipment. Proper planning of space in the rack is essential for a neat and functional setup.

Power connections: Verify that there are sufficient and appropriately rated power connections available. Ensuring proper power distribution and redundancy is critical for the reliability and uptime of the storage system.

For more details, refer to:

NetApp Documentation on Rack Installation

NetApp Community Discussion on Power Connections

When the number of paths exceeds the recommended configuration for SAN deployment, it can cause performance issues. To address this problem, you can:

Use Selective LUN Mapping (SLM): SLM allows you to control which LIFs (Logical Interfaces) are used to access specific LUNs, thus reducing the number of paths and potentially improving performance by aligning with best practice configurations.

Reconfigure the fabric switch zoning: Adjusting the zoning on the fabric switches can help manage and optimize the number of paths, ensuring that there are not too many paths that could lead to inefficient I/O operations and performance degradation.

For more details, refer to:

NetApp SAN Host Configuration

NetApp Best Practices for SAN

In an NVMe environment, the storage construct that enables an NVMe client to store data in an SVM (Storage Virtual Machine) is a Subsystem. A subsystem is a collection of one or more namespaces, which are used to store data. This abstraction allows for efficient management and scaling of NVMe storage within the ONTAP environment.

For further information, refer to:

NetApp NVMe/FC Configuration (NetApp).

To restrict access to a newly created LUN to specific hosts, the administrator should configure the igroup (initiator group). An igroup is used to control which initiators (hosts) are allowed to access specific LUNs. This ensures that only authorized hosts can access the storage, enhancing security and access control.

For more details, refer to:

NetApp Documentation on iGroups (NetApp).

To enable CHAP (Challenge-Handshake Authentication Protocol) authentication on iSCSI sessions, the command vserver iscsi security create should be used. This command sets up the necessary security policies and passwords required for CHAP authentication, ensuring secure access to iSCSI targets.

For more details, refer to:

NetApp Documentation on iSCSI Configuration (NetApp).

To restore a LUN from a SnapMirror Synchronous destination, the following steps must be taken:

Release the relationship: This step is necessary to break the SnapMirror relationship, allowing the LUN to be restored independently.

Delete the relationship: After releasing the relationship, deleting it ensures that there are no residual dependencies or configurations that might interfere with the restore process.

For more information, refer to:

NetApp Documentation on SnapMirror Synchronous (NetApp) (NetApp).

To move a WWPN from node1 to node2 in a NetApp ONTAP SAN environment where ALUA is used, you must take the Logical Interface (LIF) offline. Modifying LIFs involves changing their assignment between nodes, which requires them to be temporarily offline. This ensures that the path states are correctly updated without causing disruption to the SAN hosts.

For more details, see:

NetApp Community on Moving LIFs

NetApp Documentation on SAN LIFs

For automatic host discovery in a four-node NetApp AFF cluster using NVMe/TCP, the protocol used is mDNS (Multicast DNS). mDNS allows for the discovery of controllers and other networked devices without the need for a centralized DNS server, simplifying the setup process in environments that support NVMe over TCP.

For further information, refer to:

NetApp Documentation on NVMe/TCP

NetApp Community on Host Discovery