TerraMaster T12-450 12-bay NAS

The TerraMaster T12-450 is a 12-bay NAS (network attached storage) device powered by an Intel Atom C3558R processor. With a quad-core 2.4 GHz frequency and 64-bit X86 architecture, this processor provides strong performance for the T12-450. The device also features a hardware encryption engine, ensuring the security of your data.

In terms of memory, the T12-450 comes with 8 GB of system memory, with an additional 8 GB pre-installed module. There are a total of two memory slots, allowing for a maximum of 32 GB of memory (16 GB + 16 GB). TerraMaster reserves the right to use memory modules with the same or higher frequency as needed, and all modules have been rigorously tested for compatibility and stability.

The T12-450 has 12 disk slots that are compatible with 3.5″ SATA HDDs, 2.5″ SATA HDDs, and 2.5″ SATA SSDs. The maximum internal storage capacity is 240 TB (20 TB x 12), and the drives can be hot-swapped for easy maintenance. The T12-450 supports Btrfs and EXT4 file systems for internal drives, and EXT3, EXT4, NTFS, FAT32, and HFS+ for external drives.

In terms of connectivity, the T12-450 has two 2.5 GbE RJ-45 network jacks and two SFP+ 10 GbE network jacks. There are also two USB 3.1 host ports and a console port, though no HDMI or VGA ports are available. The device has one PCIe slot and two M.2 2280 NVMe slots for additional expansion.

The T12-450 has a compact size of 334 x 163 x 295 mm and a weight of 10.3 kg. It comes with three 80 x 80 x 25 mm system fans that can operate at four different speeds, and the noise level is 31.4 dB(A) under normal conditions. The device is powered by a 500 W power supply, and it has a power consumption of 95 W when fully loaded. It comes with a 2-year limited warranty and has received FCC, CE, CCC, and KC certification. The device is compliant with RoHS and WEEE standards and can operate within a temperature range of 0°C to 40°C (32°F to 104°F) and a relative humidity range of 5% to 95% RH.

The T12-450 comes with a host unit, power cord, RJ-45 network cable, quick installation guide, limited warranty note, and screws. It supports Windows, Mac, and Linux operating systems, as well as a variety of web browsers and mobile OSes. In terms of storage management, the device supports TRAID, Single, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10, and it can handle up to 256 internal volumes, 128 iSCSI targets, and 256 iSCSI LUNs. The T12-450 also offers volume expansion options for larger HDDs and the addition of additional HDDs.

In addition to its impressive hardware capabilities, the TerraMaster T12-450 also offers a variety of features through its TOS (TerraMaster Operating System) software. TOS allows users to easily manage and access their data on the T12-450, with options for file sharing, backup, and recovery.

Users can create and customize their own NAS experience through TOS, with options for setting up multiple users and permissions, as well as creating and managing various RAID configurations. The system also offers real-time monitoring and alerts for disk health, system status, and other important information.

One of the key features of TOS is its support for virtualization, allowing users to set up and run multiple virtual machines on the T12-450. This can be useful for testing out new software, hosting websites, and more.

Overall, the TerraMaster T12-450 is a powerful and versatile NAS device that offers strong performance, security, and a range of features through its TOS software. Its 12 bays and wide range of compatibility make it a great choice for storing and accessing large amounts of data.

Processor Model Intel Atom® C3558R
Processor Architecture X.86 64-bit
Processor Frequency Quad Core 2.4 GHz
CPU Single-Core Score /
Hardware Encryption Engine
Hardware Transcoding Engine /
System Memory 8 GB
Pre-installed Memory module 8 GB (1 x 8GB)
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 12
Compatible Drive types 3.5″ SATA HDD
Maximum Internal Raw Storage Capacity 240TB (20TB x12) (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 2
USB3.1 Host Port 2(5Gbps)
USB2.0 Host Port /
Console Port 1
PCIe Slots 1
M.2 2280 NVMe Slot 2
Size (H*W*D) 334 x 163x 295 mm
Packaging Size (H*W*D) 437*235*370  mm
Weight 10.3 kg
System Fan 80 x 80 x 25mm  3PCS
Fan Mode Smart, High speed, Middle speed, Low speed
Noise Level 31.4 dB(A) (Fully loaded Seagate 4TB ST4000VN008 hard drive(s) in idle state)
Power Supply 500 W
Redundancy Power Supply /
AC Input Voltage 100V – 240V AC
Current Frequency 50/60 Hz, Single frequency
Power Consumption 95 W(Fully loaded Seagate 4TB ST4000VN008 hard drive(s) in read/write state)
33 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)
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 TRAID, RAID 1,RAID5,RAID 6,RAID10
Volume Expansion by Adding a HDD TRAID, 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 Encryption(TOS 5.0)
PAM (Pluggable Authentication Modules)
OTP Authentication(TOS 5.0)
HyperLock File System(TOS 5.0)
Power Managerment
Power Resume
Scheduled Power On/Off
Wake up On LAN(WOL)
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,Korean,Turkish, 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
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