TerraMaster D4-320U DAS | 4-Bay 1U Rackmount 10Gbps USB Storage Enclosure
The TerraMaster D4-320U is a compact 4-bay 1U rackmount direct-attached storage (DAS) enclosure designed for business backups, server storage expansion, and efficient data management. Featuring USB 3.2 Gen 2 connectivity, up to 128TB raw storage capacity, and intelligent cooling, it delivers high-speed data transfers, flexible drive compatibility, and space-saving deployment.
Engineered for High-Speed Rackmount Storage Expansion:
- High-Capacity Storage: Four SATA drive bays supporting 3.5-inch and 2.5-inch HDDs or SSDs, with up to 128TB raw capacity using four 32TB drives.
- High-Speed Data Transfers: USB 3.2 Gen 2 Type-C interface with 10Gbps bandwidth, delivering up to 1,016 MB/s read and 960 MB/s write speeds in tested multi-SSD configurations.
- Compact 1U Rackmount Design: Space-saving chassis measuring 45 × 440 × 241mm, designed for convenient installation in server racks and business environments.
- Intelligent Cooling & Compatibility: Three 40mm smart fans with temperature-controlled cooling, supporting plug-and-play operation with Windows, macOS, and Linux.
Specification
| 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 |
