Beyond ARM limits: The Intel x86-powered F4-425 delivers robust, smart, and whisper-quiet performance for your ultimate home data hub.

Powerful Intel x86 Performance for Home & Multimedia: The F4-425 network attached storage features an Intel x86 quad-core processor, 4GB RAM, and a 2.5GbE port, delivering robust 4K video transcoding and smooth multimedia streaming. Perfect for home photo backups and multimedia entertainment.

Safely centralize data from all your devices -- Windows, Mac, mobile, external drives, and cloud storage -- into TNAS. Protect against hardware failures, ransomware, and disasters with single-platform management.

The F4-425 uses on-device AI to auto-organize photos by faces, pets, objects, and scenes -- no cloud needed. Supports JPG/HEIC/PNG+ with secure TNAS Mobile sharing (expiry controls, download limits, passwords).

TNAS Mobile combines auto photo backup, AI organization, user/storage controls, secure vaults, and admin tools -- delivering seamless remote access. Share memories confidently with granular controls: custom rules, expirations, access limits, and military-grade security for one-tap worry-free sharing.


This all-in-one app combines automatic photo backup, AI-powered photo organization, user management, storage control, personal/team folders, secure vaults, and admin tools -- delivering seamless remote access and mobile productivity.

Share precious memories with confidence through TNAS Mobile's granular controls -- customizable share names, expiration dates, access limits, download permissions, and optional password protection -- all secured with multi-layered security for worry-free, one-tap personalized sharing.



Auto-backup travel photos to TNAS & instantly share with family.
Though your NAS data may be oceans away, it's always at your fingertips--access your files anytime, anywhere, with complete freedom.

Work efficiently even while traveling for business.
Powered by the TNAS.online cloud platform and its globally distributed multi-node network, TerraMaster ensures stable and reliable data transmission. No complex setup is required--connect to and access your NAS effortlessly, no matter the network environment.
The F4-425 supports 50+ independent accounts for cost-effective family sharing. Isolated storage ensures privacy, while a shared space enables seamless collaboration--perfectly balancing security and teamwork.

The F4-425 delivers robust 4K video decoding with UPnP/DLNA protocol support. Stream seamlessly to phones, tablets, and TV platforms (Roku/Apple TV/Chromecast/Fire TV/smart TVs) via TerraMaster's Media Server or apps like Plex/Emby--delivering uninterrupted viewing pleasure.

The F4-425 includes TerraMaster's free TOS 6 -- a web based system desighed exclusively for their NAS. Configure everything through an intuitive browser interfece, no command lines needed.
TOS 6 delivers 40+ new features and 370+ refinements with a complete redesigh, enchanced security for stronger data protection, and optimized performance for agile task processing--offering TNAS users an unparalleled upgrade experience.

Supports SMB, NFS, SFTP/FTP, AFP, iSCSI, WebDAV; and features comprehensive permission management of users, user groups, and folder, meeting across-platform file services in various network environments.


TerraMaster App Center: Your Free Productivity Hub.
Download powerful tools like Aria2, aBittorrent, and Transmission for high-speed files transfers and media downloads. Enhance your multimedia experience with apps including Media Server, Plex, Emby, Terra Photos, and iTunes Server--simplifying management, sharing, and playback of home videos, photos, and music.

VirtualBox Virtualization: Enterprise-Grade Flexibility. Run multiple virtual machines simultaneously on your NAS to meet diverse virtualization needs.
Docker Ecosystem Expansion: Unlock innovative solutions through Docker-compose and Portainer integration, enchancing your virtualization capabilities with rich container tools.
TerraMaster's proprietary Surveillance Manager enables you to create a complete video surveillance system by connecting multiple ONVIF-compliant IP cameras to your TNAS. This integrated solution provides centralized camera management, live viewing, historical playback, and automatic storage of all recordings to designated TNAS locations - all through an intuitive unified interface.

TOS delivers multi-layered defense mechanisms to safeguard critical data, significantly reducing risks from hackers and ransomware attacks.


In addition to supporting standard RAID types (Single, RAID 0, and RAID 1), TerraMaster offers its proprietary TRAID/TRAID+ elastic array technology, enabling online capacity expansion, live migration, and hot-spare disk configuration for enhanced flexibility. When a TerraMaster USB DAS disk array is connected to a NAS, external drives can also be used to create storage pools and volumes, allowing for seamless storage expansion.

TerraMaster TRAID provides users with an optimized, flexible and elastic disk array management solution!
The F4-425 features a tool-less drive tray design, allowing effortless hard drive installation and removal without any tools.
It incorporates innovative Push-lock mechanism -- automatically locking the drive in place upon insertion to prevent disconnection or accidental falls.
Swapping a hard drive takes less than 10 seconds, providing exceptional convenience for users who frequently need to replace drives or transfer data.

Processor Model | Intel Celeron N95 |
---|---|
Processor Architecture | x86 64-bit |
Processor Frequency | Quad Core 2.0 GHz (Max burst up to 2.9 GHz) |
Hardware Transcoding Engine | H.264, H.265, MPEG-4, VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 60 |
System Memory | 4 GB DDR4 non-ECC SODIMM |
Pre-installed Memory Module | 4 GB DDR4 non-ECC SODIMM (1x 4GB) |
Total Memory Slot Number | 1 (DDR4 SODIMM) |
Maximum Supported Memory | 16GB DDR4 non-ECC SODIMM |
Maximum Internal Raw Storage | 120 TB (30TB x4) (Capacity may vary by RAID types) |
Disk Slot Number | 4 |
M.2 2280 NVMe Slot | / |
RJ-45 2.5GbE Network Port | 1 |
USB3.2 Host Port | 2 x 10 Gbps + 1 x 5 Gbps |
HDMI | 1 |
Size (H*W*D) | 222 x 179 x 154 mm |
Weight | Net Weight: 2.1 Kg , Gross Weight: 3.2 Kg |
Power Supply | 90 W |