SKU: F4-223


4 Bay NAS for SOHO

TerraMaster F4-223

More Powerful Performance

F4-223 is a brand-new model from the previous generation F4-221. The brand-new F4-223 uses Intel Celeron N4505 dual-core processor, with main frequency of up to 2.0GHz and the maximum Turbo frequency of 2.9GHz. It is integrated with a GPU graphics card and AES NI hardware encryption In addition, it is equipped with two 2.5G Ethernet ports that feature a read and write speed of up to 283MB/S, and a 4GB DDR4 dual-channel memory (expandable up to 32 GB). Moreover, this storage is internally installed with 2 x M.2 NVMe slots, which accelerates SSD caching and double the storage efficiency of disk arrays. . The F4-223 comes with various functions including file storage, multimedia management, backup, cloud drive synchronization, remote access, 4K HD video transcoding, and it is also suitable for home file backup and multimedia entertainment.

Higher Transmission Speed

The F4-223 is equipped with two 2.5 GbE interfaces, supporting a 2.5Gb high-speed network bandwith. The linear data transmission speed can reach up to 283 MB/s. It only takes 4 seconds to copy a movie of 1GB. Even up to 5Gb network bandwidth can be achieved through Link Aggregation.

New Operating System

F4-223 runs the new operating system TOS 5, which adds more than 50 new functions and 600 improvements compared with the previous generation. The new features meet more business requirements, as well as significantly improving response speed, security, and ease of use.

Home Data Center

The F4-223 supports up to 20TB of hard drive, and the total capacity can reach 80TB. It can store 30 million HD photos, 18 million working documents, 40,000 HD movies, and 4 million downloadable music, enabling you to back up the data in Windows PC, MAC computer, mobile phone, HDD enclosure, and network disk to TNAS for centralized management. This adequately protects users from data loss resulting from hardware malfunction or ransomware.

Flexible Storage Space Management

TRAID is the abbreviation of TerraMaster RAID. TRAID is a flexible disk array management tool developed by TerraMaster. It has features such as the automatic combination of disk space, hard disk failure redundancy protection, and automatic capacity expansion. All these functions do not require manual configuration by the user, and the system will automatically complete the configuration according to the properties of the hard disk. TRAID provides users with an optimized, flexible and elastic disk array management solution, especially suitable for new users who are not proficient in how to configure a disk array.

Across-Platform File Services

F4-223 supports all mainstream file services: SMB, NFS, SFTP/FTP, AFP, iSCSI, WebDAV; and is provided with multiple permission management of users, user groups, and file directories, meeting across-platform file services in various network environments.

Rich Backup Solutions

TOS can protect valuable data using visual user interfaces and trustworthy storage solutions thanks to its integration with multiple backup applications that can address backup needs in an array of circumstances.
Time Machine Backup: Allows macOS users to back up data on MAC computers, manage folder storage quotas, and selectively restore data based on the previous version of the backed up data as per timeline.
TerraSync: It’s not only suitable for data synchronization among various clients for realizing version management of synchronized data, but it also can help Windows computer users to realize the multi-version backup of computer data.
TerraMaster File System Snapshot (TFSS): TFSS takes snapshots of entire file system of a TNAS device by reaping the benefits of the features of the file system, so as to avoid data loss caused by misoperations or ransomware attacks.
TFM Backup: With TFM Backup, one can easily back up shared folders in TNAS or to a wide range of various local storage locations or even to a remotely mounted folder.
CloudSync: This backs up or synchronizes TNAS data with the cloud drive, which not only improves the availability of cloud data, but also provides several offsite backup versions, thus safeguarding the security of your data.
Snapshot: It is possible to take continuous snapshots of your folders or iSCSI LUNs by enabling the snapshot schedule with the advanced storage technology and optimized snapshot technology available via the BTRFS file system. When problems arise, the system can roll back to points-in-time and restore to the last backup, thereby ensuring that your data is well protected.
Duple Backup: In order to provide several offsite backup versions, Duple Backup provides advanced data protection by backing up files in TNAS to another remote TNAS, file server, or cloud drive.

Building a Convenient and Safer Private Cloud

With TNAS.online service of TerraMaster, one can easily access files from TNAS over the Internet without setting additional port forwarding rules, DDNS, or other complex network settings. One can assign different access right to relatives or friends to share one’s enjoyment at no extra cost. Free CloudSync supports the two-way synchronization function of Baidu Cloud, Google Drive, Dropbox, Amazon S3, OneDrive, NextCloud, Pcloud, Backblaze B2 and many other cloud drives, This permits one to easily open the data channel between your private cloud and public cloud drive, and enjoy the convenience of cloud life.

Home Multimedia Center

The F4-223 features powerful 4K video hardware decoding capability, and is compatible with uPnP/DLNA protocol. With TerraMaster’s dedicated “Multimedia Server” app or third-party multimedia servers (Emby, Plex), it can stream videos to a variety of multimedia devices including smart phones, tablets, Roku, Apple TV, Google Chromecast, Amazon Fire TV, and smart TV, delivering users constant, reliable entertainment experiences.

Rich Multimedia Applications

TerraMaster App Center provides a variety of tools free of charge, including Aria2, qBittorrent, and Transmission, allowing you to manage the document transmission and video download at a high speed in a convenient manner. Various multimedia applications including Multimedia Server, Plex, Emby, Terra Photos, iTunes Server are supported making is more feasible to manage, share and play family movies, photos and music.

AI Album Management

Terra Photos has an AI image recognition engine, which can recognize faces and objects in photos, and automatically form photo albums of “People” and “Objects” with similarly appearing people and objects. Meanwhile, it can also classify photos via location automatically. One can quickly find photos taken in various locations in the “Location Album”, which reflects a more intuitive and fluent photo management and sharing experience.

Docker Brings Greater Possibilities

TerraMaster’s Docker Manager integrates Docker Hub, the world’s largest free container image repository, making it easier for you to find and share container images. Docker Manager provides an intuitive graphical user interface. One can directly download images in Docker Manager, to manage and maintain containers in operation.

System Level Security Protection

Increased cyberattacks mean that the system security of network devices security system are obliged to address considerable challenges. TOS enables various systematic safeguards, such as pam identity authentication, AES 256 encryption, automatic account lockout, anti-DoS attack, and firewall. Hence, it effectively reduces the risks of malicious attacks on your devices.

Worry-free After-sales-service

TerraMaster implements its unique after-sales service policy that “provides replacements within 2 years” and offers worry-free quality assurance through real-time online customer service, a professional technical forum, an online user guide, a technical service mailbox, and remote troubleshooting.

SKU: F4-223 Category: Tags: , , , , ,


Processor Model Intel® Celeron® N4505
Processor Architecture X.86 64-bit
Processor Frequency Quad Core 2.0 GHz (Max burst up to 2.9 GHz)
CPU Single-Core Score /
Hardware Encryption Engine
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 4GB
Pre-installed Memory module 4GB (1 x 4GB)
Total Memory Slot Number 2 (DDR4 SODIMM)
Maximum Supported Memory 32 GB (16GB+16GB)
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
Maximum Internal Raw Storage Capacity 80TB (20TB x4) (Capacity may vary by RAID types)
Drive Hot Swap
Note  . Hard drive vendors will release their latest models of hard drives, and Maximum internal raw storage capacity may be adjusted accordingly.
. The maximum single volume size is not directly related to the maximum raw capacity.
File System
Internal Drive Btrfs, EXT4
External Drive EXT3, EXT4, NTFS, FAT32, HFS+
External Ports
RJ-45 1GbE Network Jack /
RJ-45 2.5GbE Network Jack 2
RJ-45 10GbE Network Jack /
 SFP+ 10GbE Network Jack /
USB3.1 Host Port 2(10Gbps)
USB2.0 Host Port /
PCIe Slots /
M.2 2280 NVMe Slot 2
Size (H*W*D) 227 x 225x 136 mm
Packaging Size (H*W*D) 300 x 275 x 186  mm
Weight 3.6 kg
System Fan 80 x 80 x 25mm  2PCS
Fan Mode Smart, High speed, Middle speed, Low speed
Noise Level 27.4 dB(A) (Fully loaded Seagate 4TB ST4000VN008 hard drive(s) in idle state)
Power Supply 90W
Redundancy Power Supply /
AC Input Voltage 100V – 240V AC
Current Frequency 50/60 Hz, Single frequency
Power Consumption 35.2W(Fully loaded Seagate 4TB ST4000VN008 hard drive(s) in read/write state)
13.9 W (Fully loaded Seagate 4TB ST4000VN008 hard drive(s) in hibernation)
Limited warranty 2 years
Certificate FCC, CE, CCC, KC
Environment RoHS, WEEE
Working Temperature 0°C  ~ 40°C (32°F ~ 104°F)
Storage Temperature -20°C ~ 60°C (-5°F ~ 140°F)
Relative Humidity 5% ~ 95% RH
Package Contents
Host unit (x1)
Power cord (x1)
Power Adapter(x1)
RJ-45 network cable (x1)
Quick Installation Guide (x1)
Limited Warranty Note(x1)
Screws(a few)
TOS Features
OS Supported
Supported Client OS Windows OS, Mac OS, Linux OS
Supported Web Browsers Google Chrome 97.0.xxxx, Mozilla Firefox 9.3,Apple Safari 12.1 ; Microsoft Edge 99.0.xx or later version.
Supported mobile OS iOS12.0, Android 9.0 or later version
Storage Management
Supported RAID Types TRAID, Single, JBOD, RAID 0, RAID 1, RAID5, RAID 6, RAID 10
Maximum Internal Volume Number 256
Maximum iSCSI Target 128
Maximum iSCSI LUN 256
Volume Expansion with Larger HDDs TRIAD, RAID 1,RAID5,RAID 6,RAID10
Volume Expansion by Adding a HDD TRIAD, RAID5,RAID6
RAID Migration
SSD Cache
Hot Spare
Hard Drive S.M.A.R.T.
Seagate IHM
NVRAM write cache(BBU-protected) /
Shared Folder Snapshot
LUN Snapshot /
File Services
Maximum Concurrent SMB/AFP/FTP/SFTP Connections 500
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Account & Shared Folder
Maximum local user’s account number 2048
Maximum local group number 512
Maximum shared folders number 512
Maximum shared folders syncing tasks 8
Rsync Backup
Duple Backup
Centralized Backup
USB  Backup
Cloud Sync
Time Machine Backup
File System Snapshot
TFM Backup
Link Aggregation
DLNA Compliance
VPN Client
VPN Server
Proxy Client
Proxy Server /
UPnP/Bonjour Discovery
TNAS.online Remote Access
Access Right Management
Batch users creation /
Import/Export users
User Quota Managerment
Local user access control for CIFS/SAMBA and FTP
Domain Authentication
AD Domain
LDAP Client
LDAP Server /
Firewall Protection
Account Auto-block Protection
AES Volume and Shared Folder Encryption
Importable SSL certificate
Instant Alert via email, Desktop Notification, Beep
RSA 2048 EncryptionTOS 5.0
PAM (Pluggable Authentication Modules)
OTP AuthenticationTOS 5.0
HyperLock File SystemTOS 5.0
Power Managerment
Power Resume
Scheduled Power On/Off
Wake up On LANWOL
UPS Supported
Multi-window, Multi-task System Management
Custom Desktop
Control Panel
Resource Monitor
OS UI Language English,German, French, Spanish, Italian, Magyar, Chinese,Japanese,KoreanTurkish, Portuguese, Russian
Application Center
iSCSI Target
Terra Photos
Duple Backup
Centralized Backup
USB Backup
VPN Server
Aria 2
Terra Search
Web Server
Clam Antivirus
Multi Media Server
Plex Media Server
Docker Manager