Exam Name: NetApp Certified Support Engineer, ONTAP Specialist
Certification Provider: Network Appliance
Corresponding Certification: NetApp Certified
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NetApp Certified Support Engineer, ONTAP Specialist: NS0-591 Exam Premium File as PDF & Test Engine
Last Updated: Sep 21, 2026
No. of Questions: 62 Questions & Answers with Testing Engine
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Network Appliance NS0-591 Exam Overview:
| Certification Vendor: | NetApp (Network Appliance) |
|---|---|
| Exam Name: | NetApp Certified Support Engineer, ONTAP Specialist |
| Exam Number: | NS0-591 |
| Exam Format: | Drag and Drop, Multiple Choice |
| Real Exam Qty: | 60 |
| Passing Score: | 68% |
| Available Languages: | English |
| Related Certifications: | NetApp Certified Support Engineer ONTAP Professional |
| Exam Price: | 150 USD |
| Exam Duration: | 90 minutes |
| Certificate Validity Period: | 2 years |
| Recommended Training: | NetApp Support Engineer Training |
| Exam Registration: | NetApp Certification & Registration Register via Pearson VUE |
| Sample Questions: | Network Appliance NS0-591 Sample Questions |
| Exam Way: | Online proctored or in-person at authorized testing centers |
| Pre Condition: | Must hold NetApp Certified Support Engineer ONTAP Professional certification; 6–12 months of hands-on ONTAP troubleshooting experience recommended |
| Official Syllabus URL: | https://www.netapp.com/support-and-training/netapp-learning-services/certifications/ontap-specialist/ |
Network Appliance NS0-591 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Protocols | 25% | - S3 server configuration and troubleshooting - SAN protocols (FC, iSCSI, NVMe) - NAS protocols (NFS, SMB/CIFS) - Connectivity and access issues |
| Performance | 20% | - ONTAP performance concepts - Resource utilization analysis - Troubleshooting latency and throughput - Performance monitoring tools |
| Hardware | 25% | - FC/SAS storage components - SP/BMC management and diagnostics - MetroCluster hardware and cabling - Hardware component troubleshooting - Cluster interconnect infrastructure |
| ONTAP OS | 30% | - Cluster administration and recovery - Panic events and WAFL recovery - Data replication issues - ONTAP OS structure and components - Support and troubleshooting tools |
Your Network Appliance NetApp Certified Support Engineer, ONTAP Specialist Questions, Answered
The NS0-591 exam, officially titled NetApp Certified Support Engineer, ONTAP Specialist, is the qualifying test for the NetApp Certified Support Engineer – ONTAP Specialist certification from NetApp (Network Appliance), a credential at the Specialist level. Passing it proves you have the skills employers look for in certified professionals, and it can also support progress toward related credentials such as NetApp Certified Support Engineer ONTAP Professional.
The Network Appliance NetApp Certified Support Engineer, ONTAP Specialist exam gives you 90 minutes to work through 60 questions. That is a steady pace with little room for second-guessing, so train yourself to read each question once, flag the difficult ones, and keep moving. Before exam day, sit at least two full timed sessions in the Fast2test test engine — when the clock feels familiar, it stops being a threat.
You need 68% to pass, and the official registration fee is 150 USD. Fall short and you pay that fee in full again for every retake, which makes solid preparation the cheaper option by far. Work through the Fast2test practice questions until you score comfortably above the passing mark, then book your seat.
Must hold NetApp Certified Support Engineer ONTAP Professional certification; 6–12 months of hands-on ONTAP troubleshooting experience recommended Eligibility rules can change over time, so before you register, confirm the latest requirements on the official exam page: NetApp (Network Appliance) NS0-591 exam overview.
You can book your NS0-591 exam through any of these official registration channels:
The exam is delivered as Online proctored or in-person at authorized testing centers, so you can pick the option that fits your schedule when you book.
NetApp (Network Appliance) recommends the following training for Network Appliance NetApp Certified Support Engineer, ONTAP Specialist candidates:
Pair that training with the 62 practice questions from Fast2test and you can check your readiness topic by topic before exam day.
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The Network Appliance NetApp Certified Support Engineer, ONTAP Specialist syllabus is organized into 4 domains. The main areas include Performance (20%), Hardware (25%), and ONTAP OS (30%). Scroll up to the Exam Topics section above for the complete, current outline before you plan your study schedule.
Network Appliance NetApp Certified Support Engineer, ONTAP Specialist Sample Questions:
A customer has requested your assistance with replacing a DS224C disk shelf from their cluster nondisruptively.
Which two actions should be performed before physically replacing the shelf? (Choose two.)
- A. Verify that the drives in the shelves are spares and ownership is removed.
- B. Zero the disks before performing the physical shelf removal.
- C. Verify that the system is configured as multipath high availability.
- D. Upgrade the IOMs in the shelf before starting the removal process.
Correct Answer: A,C 🗳️
Click the exhibit button.
A customer's system reported several errors. There was no disruption, but the customer is concerned about the system's health.
Referring to the exhibit, which statement is true?
- A. Port 1D on the system has failed.
- B. Storage redundancy is degraded.
- C. One of the IOM modules on shelf 20 has failed.
- D. One of the switches has failed.
Correct Answer: B 🗳️
A customer complains that the copy offload does not work when copying large file from a Windows 8 client between the CIFS shares that are hosted on the same ONTAP cluster.
What are two reasons for this problem? (Choose two.)
- A. Deduplication is not enabled on the destination volume.
- B. The client should be using Windows 10 for ODX support.
- C. SMB 3.0 disabled on the CIFS SVM.
- D. The source and target volumes reside on different cluster nodes.
Correct Answer: A,C 🗳️
In a 4-node MetroCluster cluster, both clusters are alerting that the connection to an ATTO bridge is lost.
Which three components should be verified to determine what is causing this problem? (Choose three.)
- A. the SFPs in the storage controllers
- B. the SFPs that are connecting the ATTO bridge to the switch
- C. the fiber cable that is connecting the ATTO bridge to the switch
- D. the ATTO bridge
- E. the dark fiber cables between sites
Correct Answer: B,C,D 🗳️
A customer mentions that their intercluster SnapMirror replication operations consistently take much longer than normal. While troubleshooting, you want to initiate a test SnapMirror session to collect performance data.
How would you accomplish this task?
- A. Run the network statistics lif show command for the intercluster LIF to simulate a network connection.
- B. Use the ifstat command to collect network performance data for the physical interface.
- C. View the active network connections to the node to see if there a large number of active connections.
- D. Run the network test-path command to simulate a SnapMirror connection and record the latency/throughput data.
Correct Answer: D 🗳️
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