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TerraMaster F4-425
TerraMaster F4-425
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4-Bay Home Network Storage
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TerraMaster F4-425
4-Bay Home Network Storage
Home Intel x86 NAS
The F4-425 is the upgraded successor to the previous-generation F4-212, now powered by the all-new TOS 6 operating system. Compared to its predecessor, the F4-425 features a more powerful Intel x86 N5095 quad-core processor, 4GB DDR4 RAM, and a 2.5GbE network port, With enhanced 4K video transcoding capabilities. Perfect for home photo backups and multimedia entertainment.
Local AI-Powered Photo Management
TNAS harnesses advanced on-device AI to intelligently organize and manage vast photo libraries, with full privacy and data security protection. It automatically recognizes and categorizes faces, pets, objects, and scenes in your selected folders, allowing you to easily sort, organize, and share photos through an intuitive graphical interface. The perfect photo management solution for home users and photography enthusiasts. Supports previews for multiple image formats, including JPG, JPEG, PNG, GIF, BMP, WEBP, HEIC, and HEIF
TNAS Mobile: Your All-in-One Solution
The newly redesigned TNAS Mobile features a cleaner, more intuitive UI, making it easier than ever to manage your TNAS on the go. 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.
Access Your NAS with Unmatched PC Convenience
For seamless PC access to your NAS data, we’ve developed the TNAS PC Client. Files appear as a local drive, allowing you to browse, search, and edit directly in File Explorer or Finder—just like working with local files. One-click drive mapping effortlessly expands your computer's storage capacity, making massive data management as intuitive as using a local hard drive.
PC File Sync to NAS
With the TerraSync application, any edits or saves made on your PC are instantly synchronized to your NAS in real time. PC File Backup: Using the TNAS PC desktop client, users can back up selected folders from their computer directly to the NAS with ease. Backup Versioning: Keep track of file changes and restore previous versions when needed. Each file can retain up to 32 historical versions. Smart and Efficient Sync Strategy: Powered by TerraSync's dynamic sync technology, the client monitors folder changes in real time and intelligently compares them with the cloud version—delivering millisecond-level automatic syncing for new or modified files.
Direct Mount for Data Drives
Unlike traditional NAS systems that require hard drives to be partitioned and formatted before installation—forcing users to erase existing data—the TOS 6 system introduces Direct Mount for Data Drives, a groundbreaking feature that simplifies storage expansion. With this capability, users can directly hot-swap a pre-used hard drive (with existing data) into their TNAS device and immediately access its contents over the network—no reformatting, no data loss. Whether migrating data, expanding storage, or repurposing old drives, this feature delivers a seamless and efficient storage solution. This innovative technology provides users with a more convenient and high-performance approach to data management.
Seamless Remote Access
Though your NAS data may be oceans away, it's always at your fingertips—access your files anytime, anywhere, with complete freedom. 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.
Home Data Storage Center
The TerraMaster F4-425 is a dedicated data storage and backup solution designed for households. Supporting hard drives up to 30TB each, it delivers a maximum total capacity of 120TB—enough to store: • 30 million high-resolution photos • 18 million work documents • 40,000 HD movies • 4 million lossless music tracks Consolidate and back up data scattered across your Windows PCs, Mac computers, smartphones, external drives, and cloud storage into your TNAS for centralized management. This helps protect against data loss caused by hardware failure, ransomware attacks, or accidental deletion.
Binding Time into Albums
This is a collection of memory albums that preserve life's most precious moments. • Children's Album Cherishes every milestone of your child's growth, capturing their innocent laughter and magical firsts. • Parents' Album Freezes those youthful years of the couple, documenting every tender moment of building a family together. • Grandparents' Album Preserves grandpa's carefully nurtured flowers and grandma's elegant dance moves, eternalizing the beauty of their golden years. • Travel Album Backup breathtaking mountain vistas and ocean horizons from your journeys, creating visual souvenirs to relive anytime. • Family Album Enables instant sharing of every warm reunion, allowing the whole family to revisit happy moments through its pages. Together, these carefully curated albums weave a timeless chronicle of your family's story.
Individual Accounts for Every Family Member
The F4-425 supports over 50 independent user accounts, enabling every family member to enjoy personalized storage on a single device. Each account features isolated data storage to safeguard privacy, while a shared public space enables seamless file sharing—striking the ideal balance between security and collaboration.
Build Your Home Multimedia Hub
The F4-425 delivers robust 4K video decoding with UPnP/DLNA protocol support. Combined with TerraMaster’s dedicated “Multimedia Server” app or third-party media servers (Emby, Plex, etc.), it can stream video content to diverse multimedia devices—smartphones, tablets, Roku, Apple TV, Google Chromecast, Amazon Fire TV, and smart TVs—delivering a smooth and enjoyable viewing experience anytime, anywhere.
Media Download Solutions
Powered by globally popular download tools including Aria2, qBittorrent, and Transmission—trusted by hundreds of millions worldwide—the F4-425 delivers blazing-fast download speeds and efficient file transfer management for all your media content.
User-Friendly NAS Operating System
The F4-425 comes with TerraMaster’s 6th-generation NAS operating system (TOS 6), available completely free of charge. TOS is a web-based OS specifically designed for TerraMaster NAS devices, allowing all configurations to be done through an intuitive browser interface—no command-line knowledge required. TOS 6 introduces over 40 brand-new features and brings improvements to more than 370+ detail enhancements, delivering a completely redesigned user experience from the inside out. Enhanced security protection mechanisms provide stronger data storage assurance, while optimized system performance delivers more agile task processing – offering TNAS users an unparalleled upgrade experience.
Cloud Drive Mounting
This feature allows users to mount public cloud storage directories directly to local TNAS directories. With it, there's no need to install cloud drive clients or log in to cloud servers—users can read and write cloud data simply by accessing local TNAS directories. Additionally, these mounted directories can be mapped as network drives on a computer, enabling direct access to cloud storage through the familiar file explorer interface, making cloud services more convenient and accessible than ever.
Cross-Platform File Services
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.
Rich Multimedia Applications
TerraMaster App Center provides a variety of free download tools including Aria2, qBittorrent, and Transmission for high-speed document transfers and media downloads. It also offers multiple multimedia applications like Multimedia Server, Plex, Emby, Terra Photos, and iTunes Server, making it easier to manage, share, and play your movies, photos, and music at home.
Video Surveillance Management
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.
Docker Unleashes More Possibilities
With the professional virtualization application VirtualBox, users gain enhanced flexibility to run multiple virtual machines simultaneously on their NAS, meeting diverse virtualization needs. When combined with Docker Compose and Portainer, the extensive Docker ecosystem opens up even more innovative capabilities, delivering a richer virtualization experience
Enterprise-Grade Security Protection
Amid increasingly rampant cyber threats, network device security now confronts unprecedented challenges. TOS delivers multi-layered defense mechanisms to safeguard critical data, significantly reducing risks from hackers and ransomware attacks. System-wide PAM authentication enables flexible, configurable security policies. Firewall and whitelist rules restrict access by IP, subnet, and port. Data transmission is secured with 256-bit encryption and TLS. OTP two-factor authentication adds mobile verification for login. IP blocking automatically locks out addresses after multiple failed login attempts. DoS protection keeps your TNAS stable during attacks. Certificate services ensure device authentication and encrypted access. Security and Privacy Control (SPC) blocks unauthorized apps from accessing network and storage. Secure Isolation Mode disables internet access to prevent attacks and unauthorized software, creating a safer environment.
Multiple Solutions to Safeguard Your Data Security
TRAID Elastic Array—Offers flexible array configuration, seamless online migration, capacity expansion, and redundancy to maximize disk space utilization. TFSS Filesystem Snapshot—Provides one-click global storage snapshots and instant recovery, effectively guarding against ransomware attacks. TFM Backup—Enables local and remote folder mirroring with differential backup capabilities, optimizing storage efficiency. HyperLock-WORM—Ensures tamper-proof protection with a retention period of up to 70 years. Snapshots—Supports file and iSCSI LUN snapshots & recovery, along with remote replication.
Flexible & Secure Storage Solutions
In addition to supporting standard RAID types (Single, RAID 0/1/5/6), 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. Click here to learn more about TRAID/TRAID+ (link to TRAID/TRAID+ introduction page)
Tool-Free Hard Drive Swapping Made Easy
The F4-425 features a tool-less drive tray design, allowing effortless hard drive installation and removal without any tools. Additionally, it incorporates TerraMaster’s innovative Push-lock mechanism—automatically locking the drive in place upon insertion to prevent disconnection or accidental falls. With this design, swapping a hard drive takes less than 10 seconds, providing exceptional convenience for users who frequently need to replace drives or transfer data.