NS0-304
NetApp Certified Data Administrator, ONTAP (NS0-304)
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ExploreAbout this exam
The NetApp Certified Data Administrator, ONTAP (NS0-304) credential is aimed at storage and infrastructure professionals who administer NetApp ONTAP clusters day to day. It validates that you can build and manage aggregates and volumes, provision LUNs and file shares, configure NFS, SMB, and SAN client access, implement SnapMirror and SnapVault protection, tune and troubleshoot performance, apply security and access controls, and use automation and cloud integrations. The exam is delivered in English as multiple-choice, multiple-response, and scenario-based items spanning eight weighted domains, with cluster fundamentals, storage, provisioning, networking, and data protection each carrying the largest shares. Preparation should be hands-on: work through cluster setup, volume and LUN creation, export and share configuration, Snapshot and SnapMirror policies, and ONTAP CLI and System Manager tasks in a lab. Supplement practice with NetApp documentation, ONTAP release notes, and the official exam guide, which lists the current objectives and any published logistics. This page is an independent study resource and is not affiliated with or endorsed by NetApp; always confirm exam logistics, including current question count, time limit, fee, passing score, retake policy, and validity period, with the official certification body, as those figures are set and published by NetApp.
What you'll study
About NS0-304 preparation
What is the format of the NS0-304 exam?
It is a proctored certification exam delivered in English. Items are multiple-choice, multiple-response, and scenario-based, and the scenarios ask you to choose the best ONTAP configuration or troubleshooting action. The official body publishes the current item count and time limit; check NetApp's certification site for those numbers before you schedule.
How difficult is the exam?
It is an administrator-level exam, so it assumes real familiarity with ONTAP rather than memorized facts. Scenario items reward people who have built aggregates, volumes, exports, and SnapMirror relationships in a lab. Candidates who only read documentation often find the networking and data protection domains hardest because the questions test trade-offs, not definitions.
How long should I study, and in what order?
Most candidates need several weeks of part-time study. Start with cluster fundamentals and aggregate/volume management, then provisioning and client access, because later domains build on them. Move to SnapMirror and SnapVault, then performance and troubleshooting, and finish with security and automation. Practice each topic in a lab as you go rather than reading all domains first.
What are common failure modes?
Frequent mistakes include confusing aggregate-level and volume-level operations, mixing up SnapMirror and SnapVault direction and policy types, misreading export policy and share permission rules, and choosing a command that works but is not the best practice for the scenario. Weak hands-on time with the ONTAP CLI and System Manager is the most common underlying cause.
Can I retake the exam if I fail?
Retake rules, waiting periods, and any fees are set by NetApp and can change. The official certification page states the current retake policy, so confirm it there before paying for a second attempt. Plan your first attempt only after lab practice on all eight domains, since scenario items punish narrow preparation.
Do I need to know the ONTAP CLI or only System Manager?
Both. Scenario items may describe a task where the CLI is the practical route, and others where System Manager is appropriate. You should be comfortable with common volume, aggregate, export policy, Snapshot, and SnapMirror commands, and with finding the equivalent workflow in the GUI. Automation topics also assume basic CLI and API familiarity.
How much does the exam cost and how long is it valid?
Fees and validity periods are published by NetApp and are not fixed on this page. Check the official certification site for the current price, validity years, and any recertification requirements. Do not rely on third-party summaries, because these details change and only the official body's figures are authoritative.
Is this page affiliated with NetApp?
No. This is an independent study resource written for candidates searching for NS0-304 preparation material. It is not affiliated with, endorsed by, or sponsored by NetApp, and it does not reproduce any commercial question bank. Use it alongside official documentation and your own lab practice.