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| Section | Objectives |
|---|---|
| ONTAP SAN implementation and configuration | - Clustered storage system NVMe configuration tasks - Switches and host systems - Storage space utilization or management concepts - Clustered storage system FCP configuration tasks - SVM configuration tasks - Data protection - Clustered storage systems and node configuration tasks - Clustered storage system iSCSI configuration tasks |
| ONTAP SAN implementation testing and troubleshooting | - Data migration - Troubleshooting tasks - Testing tasks |
| ONTAP SAN solution assessment | - Prerequisites and inventory for the installation of all SAN components during planning - Configuration components using tools - Environmental or physical considerations - Solution design and hardware provisioned to meet customer requirements or expectations |
| ONTAP SAN Concepts | - Storage space utilization or management concepts - Data protection concepts - Storage controller configuration concepts - Switch and/or host configuration concepts |
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問題 #67
An SVM is created for FCP traffic. LUNs must be created to share with ESXi hosts for datastores. Which two items must be configured after the LUN is created, for this to happen? (Choose two.)
答案：B,C
解題說明：
For configuring LUNs to share with ESXi hosts for datastores in an SVM created for FCP traffic, the following steps are necessary after creating the LUN:
* Create an igroup with the ESXi hosts ' WWPNs: This step involves defining an initiator group that includes the WWPNs of the ESXi hosts that need access to the LUN.
* Map the LUNs to the igroup: This step assigns the LUN to the created igroup, allowing the ESXi hosts to access the LUN.
For further details, refer to:
* NetApp Documentation on LUN and igroup Configuration
問題 #68
A customer has a LUN that is already mapped and connected to a host using FCP. They now want to map the same LUN to another host using iSCSI.
Which two tasks would enable the administrator to share the LUN? (Choose two.)
答案：A,D
解題說明：
ONTAP igroups can be created with an fcp, iscsi, or mixed protocol type. An iSCSI igroup is therefore valid for presenting the existing LUN specifically to the new iSCSI host. A mixed igroup is also valid because it permits both Fibre Channel and iSCSI initiators and can be used when access to a LUN involves both protocol types. ONTAP permits an igroup to be mapped to multiple LUNs and a LUN to be presented through appropriate SAN igroup mappings. Creating another FC-only igroup would not accommodate the new iSCSI initiator. A subsystem belongs to the NVMe architecture and is used to map NVMe namespaces to NVMe hosts; it is not used for FCP or iSCSI LUN presentation. Thus, both iSCSI and mixed igroups are valid configurations for the requirement.
問題 #69
A customer has demanding database servers that require larger I/O queue counts and queue depths.
What should be done to increase these parameters for certain hosts?
答案：B
解題說明：
Adding the selected hosts to the NVMe subsystem with high priority is the correct method because ONTAP host priority controls the NVMe I/O queue resources assigned to a host. NetApp's NVMe subsystem model defines the host priority setting as allocating appropriate I/O queue counts and queue depths for the host to submit I/O commands. Therefore, demanding database hosts that require larger queue counts and deeper queues should receive the higher host-priority setting rather than changing a volume QoS policy. QoS governs workload throughput or performance limits and does not directly redefine the NVMe host submission-queue count and depth. Likewise, queue depth is not configured on an individual namespace in the manner described by option D. Relevant SAN ONTAP topics are NVMe subsystems, host priority, I/O queue count, I/O queue depth, and host performance configuration.
問題 #70
What are two possible options for iSCSI authentication methods? (Choose two.)
答案：A,C
解題說明：
ONTAP defines the supported iSCSI authentication types as CHAP, deny, and none. Therefore, among the options provided, CHAP and deny are the two valid choices. CHAP authenticates an initiator by using a username and password. ONTAP supports inbound CHAP, where the storage system authenticates the initiator, and optional outbound CHAP for mutual authentication. The deny authentication type explicitly prevents the specified initiator from accessing the SVM. Certificates and SAML are not available values for ONTAP iSCSI initiator authentication. The vserver iscsi security create command exposes the authentication type as {CHAP|deny|none}. Consequently, the V9.02 supplied answer A, B is incorrect and has been corrected to A, C. Relevant topics include iSCSI security, CHAP, mutual CHAP, initiator credentials, and authentication policies.
問題 #71
An administrator has a two-node NetApp ONTAP cluster that is hosting FC LUNs for 90 SAN hosts. The hosts are experiencing occasional performance problems and receiving QFULL responses from the cluster nodes.
Which action would resolve this issue?
答案：D
解題說明：
A QFULL response indicates that the storage controller's FC target-port command queue has reached its supported capacity and cannot accept additional SCSI commands. With 90 hosts generating I/O, excessive fan- in to the existing target ports can exhaust available queue resources. Configuring additional FC target ports allows host connections and queued commands to be distributed across more storage-side target resources, reducing pressure on each individual target port. Increasing initiator queue depth would worsen the condition because hosts could submit more outstanding commands. Similarly, increasing target-port queue depth is not the appropriate administrator-controlled remedy presented here because the physical target adapter has defined queue limits. NetApp recommends planning host fan-in carefully to avoid QFULL conditions.
Relevant topics include FC queue depth, target-port fan-in, QFULL responses, SAN scalability, and FC target- port design
問題 #72
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新版NS0-522題庫上線: https://www.kaoguti.com/NS0-522_exam-pdf.html