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| Section | Objectives |
|---|---|
| ONTAP SAN Concepts | - Data protection concepts - Storage space utilization or management concepts - Storage controller configuration concepts - Switch and host configuration concepts |
| ONTAP SAN implementation testing and troubleshooting | - Troubleshooting tasks - Testing tasks - Data migration |
| ONTAP SAN solution assessment | - Configuration components using tools - Environmental or physical considerations - Solution design and hardware provisioned to meet customer requirements or expectations - Prerequisites and inventory for the installation of all SAN components during planning |
| ONTAP SAN implementation and configuration | - Data protection - Clustered storage system FCP configuration tasks - Clustered storage systems and node configuration tasks - Storage space utilization or management concepts - Switches and host systems - Clustered storage system iSCSI configuration tasks - SVM configuration tasks - Clustered storage system NVMe configuration tasks |
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NEW QUESTION # 14
After a storage administrator creates a LUN using the CLI, the LUN does not appear on the corresponding host.
What should be done to correct this issue?
Answer: D
Explanation:
A LUN created with the ONTAP CLI is not automatically visible to a host merely because the storage object exists. For FCP or iSCSI access, ONTAP must associate the LUN with an initiator group by creating a LUN mapping. NetApp's SAN provisioning workflow explicitly creates the LUN, creates or identifies the igroup containing the host initiators, and then maps the LUN to that igroup. The mapping assigns host access and a LUN ID that the initiator uses to discover the device. Bringing the LUN online does not grant host access, mounting a volume is not part of SAN LUN presentation, and export policies apply to NAS protocols rather than FCP/iSCSI LUN access. Relevant SAN ONTAP topics are LUN provisioning, igroups, LUN mapping, LUN IDs, and host discovery.
NEW QUESTION # 15
A customer opens a support case for performance issues with an FC Oracle database after migrating from a NetApp AFF system to a NetApp All SAN Array (ASA) platform. Further investigation shows that the number of paths exceeds the recommendation for SAN deployment.
What are two ways to address this problem? (Choose two.)
Answer: A,C
Explanation:
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
NEW QUESTION # 16
An administrator configured an SVM with LUNs with two WWPNs per node. The administrator accidentally created a WWPN on node1 that needs to move to node2. The SAN hosts use ALUA.
Based on this requirement, what must be taken offline to correct the situation?
Answer: D
Explanation:
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
NEW QUESTION # 17
An administrator is deploying a new SAN workload that has a NetApp All SAN Array (ASA) cluster. The customer wants to reclaim space by tiering to Azure Blob storage.
According to NetApp best practices, which volume tiering policy should be applied?
Answer: A
Explanation:
The Auto FabricPool tiering policy permits ONTAP to identify cold blocks in both the active filesystem and Snapshot data and move those blocks from the performance tier to the configured object-store capacity tier, including Microsoft Azure Blob Storage. Unlike the all policy, Auto does not immediately classify all blocks as cold; active data remains on the performance tier until it satisfies the cooling criteria. The default cooling period for Auto is 31 days and can be adjusted within supported limits. snapshot-only restricts tiering primarily to Snapshot-related blocks, while none prevents additional blocks from being tiered. Because the customer specifically wants to reclaim performance-tier capacity while retaining active SAN workload behavior, the Auto policy provides the appropriate balance between cloud-tier space reclamation and performance.
NEW QUESTION # 18
A storage administrator recently implemented ISCSI SAN in a customer environment. Which two actions should be done to ensure the best performance? (Choose two.)
Answer: 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
NEW QUESTION # 19
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