DAS enclosure TerraMaster D2-320 features USB 3.2 Gen2 Type-C interface with 10 Gbps bandwidth and supports two bays for 2.5-inch or 3.5-inch SATA drives up to 22TB each. The device achieves read/write speeds up to 521 MB/s with HDDs in RAID 0 and up to 1075 MB/s with SSDs. The enclosure offers RAID 0, RAID 1, JBOD, and Single Disk modes via rear switch, includes tool-free installation with push-lock mechanism, and features an 80mm intelligent cooling fan with 50% noise reduction compared to D2-310.

About TerraMaster D2-320
The TerraMaster D2-320 functions as a Direct Attached Storage enclosure with two drive bays that accommodate both 2.5-inch and 3.5-inch SATA drives, including SSDs. The device operates as either a standalone storage solution or an expansion unit for TerraMaster NAS systems running TOS 5.1 or higher.
The enclosure utilizes a USB 3.2 Gen2 Type-C interface that delivers 10 Gbps bandwidth, doubling the speed of its predecessor, the D2-310. The device maintains backward compatibility with USB 3.0, USB 3.1, Thunderbolt 3, Thunderbolt 4, and USB4 standards. A 1-meter USB Type-C cable comes included with the unit.
Storage capacity reaches up to 44TB with two 22TB drives installed. Performance testing demonstrates read/write speeds of 521 MB/s with dual WD Red 8TB hard drives in RAID 0 configuration. SSD configurations achieve higher throughput, with Samsung 870QVO drives delivering up to 1075 MB/s read speeds and 956 MB/s write speeds.
Key advantages of the D2-320 include tool-free installation with push-lock mechanism completing drive mounting in under 10 seconds, an intelligent 80mm temperature-based cooling fan, 50% noise reduction compared to previous models, and plug-and-play operation across Windows, Mac, and Linux platforms.
The rear-panel switch allows users to select between RAID 0, RAID 1, JBOD, and Single Disk modes without software configuration. The device supports TPC Backupper software for scheduled Windows PC backups, providing automated data protection capabilities.
Specifications
| Specification | Value |
|---|---|
| General Characteristics | |
| Model | D2-320 |
| Brand | TerraMaster |
| Number of Bays | 2 |
| Maximum Storage Capacity | 44 TB (22 TB × 2) |
| Interface and Connectivity | |
| USB Interface | USB 3.2 Gen2 Type-C |
| Data Transfer Bandwidth | 10 Gbps |
| Hardware Interface | SATA 6.0 Gb/s |
| Performance | |
| Read Speed (HDD RAID 0) | 521 MB/s |
| Write Speed (HDD RAID 0) | 521 MB/s |
| Read Speed (SSD RAID 0) | 1075 MB/s |
| Write Speed (SSD RAID 0) | 956 MB/s |
| RAID Configuration | |
| RAID Modes | RAID 0, RAID 1, JBOD, Single Disk |
| Hardware RAID | Yes |
| RAID Auto-rebuilding | Yes |
| Drive Compatibility | |
| Compatible Drive Types | 3.5″ SATA HDD, 2.5″ SATA HDD, 2.5″ SATA SSD |
| File System Support | NTFS, APFS, Mac OS, FAT32, EXT4, exFAT |
| HDD Sleep Mode | Yes |
| Cooling System | |
| System Fan | 80mm × 80mm × 25mm (×1) |
| Fan Mode | Smart (temperature-controlled) |
| Noise Level | 23.8 dB(A) |
| Dimensions and Weight | |
| Device Dimensions | 222 × 119 × 154 mm |
| Net Weight | 1.3 kg |
| Material | Plastic |
| Color | Black |
| Power Supply | |
| Power Supply | 40 W |
| AC Input Voltage | 100V to 240V AC |
| Current Frequency | 50/60 Hz, Single Phase |
| Power Consumption (Active) | 19.4 W |
| Power Consumption (Hibernation) | 5.2 W |
| Operating Environment | |
| Working Temperature | 0°C to 40°C |
| Storage Temperature | -20°C to 60°C |
| Relative Humidity | 5% to 95% RH |
| System Compatibility | |
| Supported Operating Systems | Windows, Mac OS, Linux |
| Certifications | |
| Certificates | CE, FCC, CCC, KC, RoHS |
| Price | |
| Price (USD) | $152 |
Official Store TerraMaster
You can purchase DAS TerraMaster D2-320 products at the official online store at competitive prices by reviewing specifications and user reviews, photos and descriptions, along with available discounts and promotions. Our product reviews will help you select and order Terramaster with direct delivery from the manufacturer backed by an official warranty.