TerraMaster D4-320U 4-Bay 1U Rackmount USB 3.2 10Gbps Type-C HDD/SSD DAS
Compact Design for Seamless Deployment: With a depth of just 241mm (9.5 inches)—50% shorter than standard chassis—and a weight of 3.2kg, the D4-320U fits easily into server racks without rails. Its space-saving form is ideal for data centers, closets, or offices, offering a centralized storage solution for SMB and SOHO users.
High Speed: Utilizing the USB 3.2 Gen2 protocol, the D4-320U delivers data transfers up to 10Gbps. In real-world tests, it achieves read/write speeds up to 1,016MB/s with four HDDs, and 510MB/s with a single SSD.
Super-large Storage Space: Supports up to four 3.5″ or 2.5″ SATA HDD/SSDs, with a maximum per-drive capacity of 32TB for a total of 128TB. Note: The enclosure operates in standalone disk mode and does not support RAID arrays.
Expandable NAS Integration: When connected via USB to a compatible TerraMaster NAS running TOS 5.1 or later, the D4-320U can be used to create additional storage pools and expand your NAS capacity directly through the TOS interface.
Plug and Play, Highly Compatible: A driver-free device that works instantly with Windows, macOS, and Linux. It includes both USB-C to C and USB-C to A cables (0.8m each), and supports connections to USB 4.0, 3.2, 3.1, 3.0, and Thunderbolt 5/4/3 interfaces.
Features:
- 4 Disk Slot Number
- 3.5" SATA HDD Compatible Disk Types
- 128 TB (32TB HDD * 4) Maximum Internal Raw Capacity
- USB3.2 Type-C gen2 10Gbps
- DC IN 12V Power Socket
- Read：1016MB/s ( SSD* 4)
- Write：960MB/s ( SSD*4 )
- 72 W Power Supply
- 35.0 dB(A) Noise Level
- Windows OS, Mac OS, Linux Supported OS
Specifications:
| Storage |
|
| Disk Slot Number |
4 |
| Compatible Disk Types |
3.5" SATA HDD |
| 2.5" SATA HDD |
| 2.5" SATA SSD |
| File System |
NTFS, APFS, Mac OS,FAT32,EXT4,exFAT |
| Maximum Internal Raw Capacity |
128 TB (32TB HDD * 4) |
| RAIDs Supported |
SINGLE DISK |
| HDD Sleep |
√ |
| USB |
USB3.2 Type-C gen2 10Gbps |
| USB HOST Interface |
√ |
| Power Socket |
DC IN 12V |
| Reading/writing Speed (max.) |
|
| Reading Speed (max.) |
Read：560MB/s ( SSD* 1 ); Read：1016MB/s ( SSD* 4)； |
| Writing Speed (max.) |
Write：520MB/s ( SSD*1 ); Write：960MB/s ( SSD*4 )； |
| Appearance |
|
| Size (H*W*D) |
45 x 440 x 241 mm |
| Packaging Size (H*W*D) |
89 x 531 x 89 mm |
| Weight |
net weight: 2.7Kg Gross Weight: 4.5Kg |
| Others |
|
| System fan |
40 x 40 x 20mm 3PCS |
| Fan mode |
Smart |
| Noise Level |
35.0 dB(A) |
| Power Supply |
|
| Power Supply |
72 W |
| AC Input Voltage |
100V to 240V AC |
| Current Frequency |
50/60 HZ, Single Phase |
| Power Consumption |
45.5W (4 x 22TB Seagate 22TB ST22000NM001E hard drives in read/write state) |
| 8.1 W (4 x 22TB Seagate 22TB ST22000NM001E hard drives in hibernation) |
| Environment Temperature |
|
| 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 |
| Supported OS |
Windows OS、Mac OS、Linux |
| Warranty |
2 years |
| Certificate |
CE, FCC, CCC, KC |
| Environment |
RoHS compliance |
| Package Contents: |
Host unit (x1) |
| Power cord (x1) |
| USB Cable C to C(10Gb) (0.8m x1); USB Cable A to C(10Gb) (0.8m x1) |
| Quick Installation Guide (x1) |
| Power adapter (x1) |
| Screws (several) |
| Limited Warranty Note x 1 |
