F4-425 Pro

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F4-425 Pro

Intel 8-Core · 3 × M.2 NVMe · Dual 5GbE

Powered by the world's first AI-native TOS 7 OS, supporting local-first smart workflows and independent data control.

$559.99
$699.99 
20% off
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CPU

Intel N350 16GB RAM

Intel N305 8GB RAM

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TerraMaster F4-425 Pro 4-Bay AI NAS

Overview

Specifications

FAQ

The Future of Private Cloud. 
Own Your Data, Cancel Your Subscriptions.

You Speak, It Provisions. Welcome to Intent-Driven Storage.

Unleash elite 8-core performance powered by TOS 7.

This isn't superficial voice control—it’s kernel-level natural language processing. Consider OpenClaw your private DevOps engineer, always on standby.
Eliminate fragmented terminal command lines and repetitive manual provisioning forever. Rebuilt entirely on an AI-native kernel, the pre-installed OpenClaw agent translates plain conversational inputs directly into intricate system tasks—from provisioning developer environments to orchestrating snapshots.

8-Core Power. Zero Bottlenecks. 
Built for high-intensity workflows.

Stop compromising system stability under heavy loads. With an elite Intel® 8-core processor, 16GB DDR5 memory, and dual 5GbE throughput, the F4-425 Pro effortlessly bridges high-intensity tasks like 4K real-time transcoding, complex Docker orchestration, and multi-user concurrent access. It doesn’t just handle your day-to-day—it provides the headroom your business and creative projects demand. 

More Than A Backup. A Digital Immune System.

Ransomware and accidental deletions shouldn't keep you up at night. TOS 7’s BBS Proactive Defense replaces passive security with an active digital immune system. When anomalous encryption is detected, our AI triggers an instant 3-step defense: Lock Folders ➔ Isolate Snapshots ➔ Push Mobile Alerts.
Backed by 70-year immutable HyperLock WORM and automated 3-2-1-0 recovery, your life's work is sealed in a fortress hackers can never touch.

Beyond Response—Your Comprehensive Privacy Fortress.

Building upon the BBS immune system, we’ve fortified your data with deep-layer defense:

Immutable Security: HyperLock WORM technology ensures your critical backups are physically untouchable.

Multi-Layered Encryption: From AES-256 volume protection to encrypted shared folders, privacy is baked into every layer.

Your data remains entirely under your control, never leaving your side.

Shatter Gigabit Bottlenecks. 1010 MB/s of Unrestricted Speed.

Don't let network latency strangle your creative flow. Delivering a staggering 1010 MB/s linear throughput—10x faster than traditional gigabit networks—the F4-425 Pro’s dual 5GbE ports unleash frictionless, zero-proxy 4K/8K native scrubbing that makes cloud editing feel as fluid as a local drive.

TOS 7: The AI Storage Brain That Listens, Thinks, and Guards.

Your Lifetime Memories, Privately Curated：Stop wasting your free time on endless folder dragging and version chaos. The F4-425 Pro serves as a private, secure sanctuary for your entire lifetime history. Just ask the pre-installed OpenClaw agent to sort your archive : it automatically parses timelines, clusters faces, and deletes duplicates to curate your albums flawlessly. No steep learning curves, no tedious manual sorting.

TOS 7

The World's First AI-Native NAS OS

We don' t add AI to NAS -we Make NAS the AI platform.

Learn About TOS 7

self-healing intelligence, proactive protection：

Stop reacting to threats—start immunizing your data. TOS 7’s self-healing intelligence transforms your NAS into a proactive digital fortress. Simply define your logic: "If abnormal encryption is detected, lock folders and trigger snapshots," and let our AI take the wheel. Upon detecting a ransomware attempt, the system executes an instant 3-step defense—isolating the threat in microseconds and securing your recovery points. Your data remains untouched, your systems stay online, and you stay worry-free.

Proactive defense with customizable logic.

Real-time AI monitoring, automated response, and microsecond-level three-step defense.

Uninterrupted business operations, intact data, and worry-free experience.

Forget manual uploads and version conflicts. Powered by TerraMaster’s proprietary P2P synchronization engine, TerraSync ensures your files flow seamlessly across NAS, PC, Mac, and mobile devices in milliseconds. With intelligent selective sync and on-demand access, your data remains perfectly up-to-date even across complex network environments. Experience cross-device collaboration that feels as simple and fluid as working from a single local folder.
F4-425 Pro

TRAID Elastic Storage

Break Free from Capacity Limits：Stop letting traditional RAID dictate your hardware purchases. With TerraMaster's TRAID, you are no longer chained to identical hard drive sizes or models. Our elastic storage engine intelligently aggregates drives of varying capacities, reclaiming the "trapped" space that traditional RAID typically leaves unusable. Simply drag and drop your drives to preview your gain in real-time. Whether you're mixing new high-capacity drives with legacy disks, TRAID optimizes your redundancy and capacity automatically. Get more storage, zero wasted gigabytes, and the freedom to expand on your own terms.

500+ Atomic APIs, Your AI-Driven NAS, Programmable：TOS 7 shatters the limitations of traditional storage by exposing 500+ atomic RESTful API endpoints. From file manipulation and task scheduling to network and backup management, every subsystem is now at your command. Whether you prefer Python or Node.js, you can build custom automation scripts or empower AI agents to orchestrate your NAS in real-time. Stop relying on pre-built software—take control of your data logic and turn your F4-425 Pro into a truly programmable infrastructure. And with our upcoming Skill Store, you’ll be able to share your custom automations and explore new possibilities with a community of global developers.

  • Creative Studio

  • Growth Company

  • Developers & Geeks

  • Modern Household

Your Team Deserves a Frictionless Collaboration Hub.

Stop wasting production time on complex IT deployments and manual network configurations. TOS 7 empowers your creative team with a "self-service" architecture that eliminates technical bottlenecks entirely. Whether you are editing multi-cam projects in Final Cut Pro, collaborating on Premiere Pro timelines, or grading in DaVinci Resolve, F4-425 Pro delivers the raw speed and stability of a local drive with the intelligence of a professional server. Stop managing storage—start creating with a workflow that simply works.

F4-425 Pro

A One-Person IT Powerhouse.

Scale your business without scaling your IT overhead. TOS 7 transforms the F4-425 Pro into a centralized command center built for growth:
Effortless Permission Management: Forget complex group policies—use natural language to deploy precision-based access templates in seconds.
Rapid Batch Deployment: Manage your entire infrastructure with ease; push standardized backup strategies across 50+ workstations with a single command.
Centralized Security Intelligence: Use our comprehensive BBS backup dashboard to monitor real-time data status and safety metrics, ensuring your entire business archive is always 3-2-1 compliant and fully protected.

F4-425 Pro

One Command, Full CI/CD. The Ultimate Pipeline for Developers.

Stop wasting valuable engineering hours on repetitive, manual deployments. By leveraging the OpenClaw AI agent and 500+ native RESTful APIs, F4-425 Pro transforms text-based intents into self-executing automation pipelines.  Native Pipeline Integration: Fully compatible with GitLab Runner and Jenkins Agent, turning your NAS into a high-performance build node. Flexible Virtualization Core: Unleash full-stack versatility with robust support for Ubuntu/Debian virtual machines and container orchestration.
From code commit to container production, let your storage work as hard as you do. Stop managing infrastructure—start building on top of it.  

F4-425 Pro

Your Family’s Digital Oasis. Where Memories Never Fade.

F4-425 Pro is the secure sanctuary for your family’s most precious moments. Powered by TOS 7, it blends intuitive AI with cinematic performance to transform your living room.
Instant, Effortless Backup: Protect every photo and video from your family’s devices in real-time, with no subscription fees and zero cloud reliance.
AI-Curated Growth Albums: Automatically identify and organize your children's milestones into smart albums, making it easier than ever to relive your journey together.
Cinematic Home Theater: Experience elite-grade hardware transcoding. With native support for Dolby Vision and HDR, your ultra-high-definition media looks flawless on any screen, anywhere.
Your memories are meant to last—keep them safe, private, and stunningly preserved at home.

F4-425 Pro

One NAS, Infinite Possibilities.

Beyond your specific workflow, a vast ecosystem awaits：While the F4-425 Pro is engineered for your specific needs, its power doesn't stop there. Unlock a world of professional-grade applications that scale with you, whether you’re a hobbyist exploring new tech or a professional scaling your business.
Docker & Containers: Deploy any app in seconds. Instantly transform your NAS into a powerful home server that runs exactly what you need.
Seamless Cloud Sync: Bridge your cloud and private worlds. Consolidate all your scattered resources into one perfectly aligned, accessible hub.
Infinite Expandability: Evolve with the Skill Store. Get ready for an ever-growing library of community-built plugins that scale with your needs.

Pro-Level Configuration That Excels Both Inside And Out

Packaging Size (H*W*D)

Title

186*277*277 mm

Interfaces & Network

Title

4 x USB 3.2 Gen 2 (10Gbps). 
2 x 5GbE RJ45；

Drive Bays / M.2 Slots

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4 x 3.5"/2.5" SATA (Maximum 30TB per drive)
3 x M.2 2280 NVMe (PCIe 3.0)；

Processor Model

Title

Intel® N350
Intel® N305

FAQs

Q：Can I use existing drives without losing data?

A：Yes. TOS supports direct disk migration- data stays intact.

Q：How does TOS 7 AI compare to other NAS OS?

A：TOS 7 includes OpenClaw AI agent: natural language control, auto task execution, and 500+ RESTful APIs. Others require manual setup.

Q：Does TRAlD really require no data migration when expanding storage?

A：Correct. With TRAlD, you can insert a new drive or replace with a larger one, and the system expands online without data migration.

Q：Does TOS 7 support online Office document preview and editing?

A：Yes. Online preview and editing of Ofice documents is a new feature in TOS 7.

  • F4-425 Pro - Specifications

Processor Model

Intel® N350/Intel® N305

Processor Architecture

X.86 64-bit

Processor Frequency

N350: Max burst up to 3.9 GHz

N305: Max burst up to 3.8 GHz

CPU Single-Core Score

/

Hardware Transcoding Engine

H.264, H.265, MPEG-4, VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 60

Hardware Transcoding Engine

√

System Memory

N350: 16 GB non-ECC SODIMM

N305: 8 GB non-ECC SODIMM

Pre-installed Memory Module

N350: 16 GB non-ECC SODIMM (1x 16GB)

N305: 8 GB non-ECC SODIMM (1x 8GB)

Total Memory Slot Number

1 (SODIMM)

Maximum Supported Memory

32 GB non-ECC SODIMM

Note

TerraMaster reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.

Disk Slot Number

4

Compatible Drive types

3.5" SATA HDD 
2.5" SATA HDD

2.5" SATA SSD

Maximum Internal Raw Storage Capacity

120 TB (30TB x4) (Capacity may vary by RAID types)

M.2 2280 NVMe Slot

3 (PCIe 3.0 x1)

Drive Hot Swap

√

Internal Drive

Btrfs, EXT4

External Drive

EXT3, EXT4, NTFS, FAT32, HFS+, BTRFS

RJ-45 5GbE Network Port

2

USB3.2 Host Port Type A

3(10Gbps)

USB3.2 Host Port Type C

1(10Gbps)

HDMI

1 x HDMI

Appearance

Size (H*W*D)

150*181*219 mm

Packaging Size (H*W*D)

186*277*277 mm

Weight

Net Weight: 2.9 Kg, Gross Weight: 4.1 Kg

System Fan

120 x 120 x 25mm 1PCS

Fan Mode

Smart, High speed, Middle speed, Low speed

Noise Level

20.9 dB(A) （Using 4 SATA HDDs/SSDs in standby mode; Test environment noise: 17.3dB(A); Test distance: 1m）

Power Supply

90 W

Redundancy Power Supply

/

AC Input Voltage

100V - 240V AC

Current Frequency

50/60 Hz, Single frequency

Learn More

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F4-425 Pro

$559.99
$699.99