TerraMaster D2-320 is a compact external DAS enclosure with 2 bays for 3.5"/2.5" SATA HDDs and 2.5" SATA SSDs, offering up to 44 TB of storage, USB‑C (USB 3.2 Gen 2) 10 Gb/s, and hardware RAID for performance and data protection. Thanks to quiet cooling and broad compatibility with Windows, macOS, and Linux, it is ideal for backups, video work, and expanding a workstation’s capacity.
USB‑C 10 Gb/s for fast transfers
The modern USB 3.2 Gen 2 Type‑C interface delivers throughput up to 10 Gb/s and wide compatibility (USB 3.0/3.1/3.2, Thunderbolt 3/4). With 2× SSDs in RAID 0, it can reach up to 1075 MB/s read and 956 MB/s write (depending on drives and system).
Hardware RAID for performance and data security
Choose the mode you need: RAID 0 for higher performance, RAID 1 for data mirroring, JBOD to combine capacity, or single disk. Management is also simplified by an integrated automatic array rebuild function.
Quiet operation and smart cooling
An intelligent fan with speed control adjusts cooling to the load so storage stays stable even during long transfers. The design is optimized for airflow and reduced vibration; noise is approximately 23.8 dB(A) at full load.
Looking for fast, reliable external storage for large volumes of data? TerraMaster D2-320 is a dual-bay DAS enclosure that lets you easily install 3.5" HDDs, 2.5" HDDs, or 2.5" SSDs. Thanks to USB‑C (USB 3.2 Gen 2) with 10 Gb/s bandwidth, it handles swift transfers, and with two SSDs in RAID 0 it can reach speeds up to 1075 MB/s read and 956 MB/s write (depending on the drives used and configuration).
Hardware RAID modes let you choose exactly what you need—maximum performance, secure mirroring, or flexible capacity pooling. In addition, an intelligent fan with speed control maintains stable temperatures and helps ensure quiet operation even during long transfers.
Main advantages of TerraMaster D2-320:
- 2 bays for HDD/SSD and capacity up to 44 TB (2× 22 TB)
- USB‑C 10 Gb/s (also compatible with USB 3.0/3.1/3.2 and Thunderbolt 3/4)
- Hardware RAID: RAID 0 / RAID 1 / JBOD / single disk
- Quiet operation around 23.8 dB(A) and efficient cooling
- Push‑Lock for convenient drive installation and replacement
- Intelligent drive sleep and overvoltage protection
Specifications
- Manufacturer
- TerraMaster
- Model
- D2-320
- Device type
- External DAS enclosure
- Number of bays
- 2
- Supported storage media
- 3.5" SATA HDD, 2.5" SATA HDD, 2.5" SATA SSD
- Maximum capacity
- 44 TB (2 × 22 TB)
- Supported RAID modes
- RAID 0, RAID 1, JBOD, single disk
- Interface
- USB 3.2 Gen 2 Type-C (10 Gb/s)
- Maximum read speed
- up to 1075 MB/s (2 × SSD in RAID 0)
- Maximum write speed
- up to 956 MB/s (2 × SSD in RAID 0)
- Supported file systems
- NTFS, APFS, FAT32, exFAT, EXT4
- Compatible operating systems
- Windows, macOS, Linux
- Noise level
- approximately 23.8 dB(A)
- Dimensions
- 222 × 119 × 154 mm
- Weight
- 1.3 kg
- Power consumption
- 40 W