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NS0-594 Verified 2026 Edition

NetApp Certified Support Engineer ONTAP Specialist Practice Test

NS0-594 is the current NetApp Certified Support Engineer, ONTAP Specialist exam, replacing the earlier NS0-593 version. It requires the NetApp Certified Support Engineer ONTAP Professional certification first. The practice test works through ONTAP OS fundamentals, hardware and protocol troubleshooting, and performance concepts.

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Exam Information

Official specifications published by NetApp

Exam Format

Specialist

Registration

$200 USD
Pearson VUE or online proctoring

Validity

24 months
Retake the current version of the exam before expiration to maintain the certification

NS0-594 Exam Topics and Domains

NS0-594 is organized into 4 weighted domains. Expect to work with ONTAP, ONTAP CLI, Active IQ, Active IQ / performance counters, and more.

1

ONTAP OS

35%

Tools available for support or troubleshooting

ONTAP CLI diagnostic tools

Identify and use the tools available for supporting or troubleshooting ONTAP

ONTAP cluster administration

Cluster and node administration

Administer and troubleshoot ONTAP cluster operations

Data replication issues

SnapMirror and SnapVault troubleshooting

Diagnose and resolve ONTAP data replication issues

Structure of ONTAP OS

ONTAP software architecture

Describe the internal structure of the ONTAP operating system

Troubleshoot ONTAP OS

OS-level fault isolation

Troubleshoot faults within the ONTAP operating system

Handle panic events

Node panic and coredump handling

Handle and analyze ONTAP node panic events

2

Hardware

29%

Hardware troubleshooting

Controller, shelf and disk faults

Troubleshoot ONTAP storage system hardware faults

Troubleshooting SP or BMC

Service Processor / Baseboard Management Controller

Troubleshoot the Service Processor (SP) or BMC

Hardware components in a Fibre Channel environment

FC target ports, HBAs and switches

Identify and troubleshoot hardware components in a Fibre Channel environment

Cluster interconnect infrastructure

Cluster network switches and ports

Troubleshoot the cluster interconnect infrastructure

MetroCluster configurations

MetroCluster health and switchover

Troubleshoot MetroCluster configurations

3

Protocols

18%

ONTAP NAS configurations

NFS and CIFS/SMB troubleshooting

Troubleshoot ONTAP NAS (NFS/SMB) configurations

ONTAP SAN configurations

FC and iSCSI LUN access

Troubleshoot ONTAP SAN (FC/iSCSI) configurations

S3 server configurations

ONTAP S3 object access

Troubleshoot ONTAP S3 server configurations

4

Performance

18%

ONTAP performance concepts

Latency, throughput and IOPS

Explain ONTAP performance concepts

Troubleshooting ONTAP performance

Performance data collection and analysis

Collect and analyze data to troubleshoot ONTAP performance

Software-defined ONTAP Solutions

ONTAP Select and Cloud Volumes ONTAP performance

Troubleshoot performance of software-defined ONTAP solutions

How do I earn this certification?

Passing NS0-594 earns the NetApp Certified Support Engineer ONTAP Specialist (NCSE-OS) certification. It sits in the Support Engineer (ONTAP) track.

Next Level Options
NetApp Certified Expert-level certifications (e.g., NCIE)
Alternative Paths
NS0-005 - NetApp Certified Technology Solutions ProfessionalFoundational NetApp technology solutions credential in the same 2026 lineup

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How to study for this exam?

The most effective way to prepare for NS0-594 is by using the PlanetCert Simulator to practice questions and review detailed explanations.

Support Engineer ONTAP Specialist - Certification Program (official exam page)NetApp Learning Services course catalogNetApp Certification Program FAQs and PoliciesNetApp CertMetrics registration portal

What's changed on this exam?

Current Status
  • ACTIVE
  • Last content update: 2026 (INSIGHT 2026 certification lineup)
Updates
ONTAP 9.19.1 (current ONTAP CLI command reference at research time) Support/troubleshooting objectives map to current ONTAP CLI (event log, statistics, system node, snapmirror, metrocluster, S3 object store). • Release date: 2026

Who should take this exam?

NetApp Certified Support Engineer ONTAP Professional certification
  • 6 to 12 months experience troubleshooting, analyzing, and resolving NetApp ONTAP Storage Systems
  • NetApp Cloud Native Associate accreditation
  • NetApp Hybrid Cloud Associate accreditation
All NetApp practice tests

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Common Questions

What is the exam code for the NetApp Certified Support Engineer ONTAP Specialist certification?
The current exam code is NS0-594. NetApp's INSIGHT 2026 certification lineup lists the NetApp Certified Support Engineer ONTAP Specialist exam as NS0-594, replacing the previous NS0-593 code.
What are the prerequisites for the NS0-594 exam?
Candidates must first earn the NetApp Certified Support Engineer ONTAP Professional certification and should have six to 12 months of experience troubleshooting, analyzing, and resolving NetApp ONTAP storage systems.
What topics does the NS0-594 exam cover?
The exam is organized into four domains: ONTAP OS (cluster administration, replication, panic events, troubleshooting tools), Hardware (SP/BMC, Fibre Channel, cluster interconnect, MetroCluster), Protocols (NAS, SAN, and S3 configurations), and Performance (performance concepts, troubleshooting, and software-defined ONTAP).
How much does the NS0-594 exam cost?
NetApp Specialist-level certification exams cost $200.00 USD (price effective May 1, 2025). The exam is delivered through Pearson VUE and registered via NetApp's CertMetrics portal.
How long is the NetApp Certified Support Engineer ONTAP Specialist certification valid?
NetApp certifications are active for 24 months once earned. You maintain the credential by recertifying before it expires.
Does NetApp publish domain weightings for NS0-594?
No. NetApp lists the four exam domains and their objective sub-topics on the official certification page but does not publish per-domain percentage weightings for this exam.
What is the retake policy if I fail the NS0-594 exam?
Per NetApp Certification Program Policies, after a first failure you can immediately retake the exam; after multiple failures you must wait 14 days before retaking.

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