TerraMaster D2-320 Disk Array Desktop Black

TERRAMASTER D2-320 DAS enclosure with 2 bays

TerraMaster D2-320 is an external DAS enclosure with two bays for SATA HDD and SSD drives, designed for users who need large storage capacity and high performance. The device supports 3.5" HDD, 2.5" HDD and 2.5" SSD, offering a maximum capacity of up to 44 TB. Thanks to the USB 3.2 Gen 2 interface with throughput of up to 10 Gb/s, it provides fast data transfer, and in RAID 0 configuration with two SSDs it can reach read speeds of up to 1075 MB/s and write speeds of up to 956 MB/s. Compatibility with Windows, macOS and Linux allows D2-320 to be easily integrated into various work environments.

Flexible storage configuration

Two drive bays let you create a configuration tailored to your individual needs. You can use high-capacity HDDs for data archiving or fast SSDs for working with large files and projects. The maximum supported capacity of 44 TB lets you store extensive libraries of photos, videos, backups or company documentation. Thanks to support for various storage formats, expanding your storage is simple and convenient.

Hardware RAID for performance and security

TerraMaster D2-320 supports hardware RAID modes: RAID 0, RAID 1, JBOD and Single Disk. RAID 0 improves performance by combining the capabilities of both drives, while RAID 1 creates a mirror copy of the data and enhances the security of stored files. The JBOD mode is also available, which combines the capacity of the installed drives into a single shared storage space. The built-in automatic array recovery feature further simplifies data management and improves convenience in everyday use.

USB-C interface with 10 Gb/s

The enclosure is equipped with a modern USB-C port, compatible with the USB 3.2 Gen 2 standard. This solution provides high throughput and broad compatibility with computers equipped with USB 3.0, USB 3.1, USB 3.2, Thunderbolt 3 and Thunderbolt 4. When two SSDs are used in RAID 0 mode, the device can reach read speeds of up to 1075 MB/s and write speeds of up to 956 MB/s. Actual results depend on the storage media used and the system configuration.

Quiet operation and efficient cooling

An intelligent fan with speed control keeps temperatures at optimal levels. The system automatically adjusts cooling intensity according to the current drive load, which helps ensure stable operation even during prolonged data transfers. The manufacturer has also optimised the enclosure's design for better airflow and reduced vibration. As a result, the device operates quietly, with a noise level of approximately 23.8 dB(A) under full load.

Energy efficiency and NAS expansion capability

D2-320 supports an intelligent drive sleep function that works in conjunction with the computer's operating system. When the device is not in use, the drives can automatically enter sleep mode, which reduces power consumption and wear on components. The enclosure also includes protection against voltage surges, which safeguards both the device and the installed media. In addition, this model can serve as a storage expansion for selected TerraMaster NAS servers running TOS 5.1 or a later version.

Compact design and convenient drive installation

Despite its large capacity and wide range of features, the enclosure retains compact dimensions of 222 × 119 × 154 mm. Weighing only 1.3 kg, the device easily fits on a desk or in a home data centre. The Push-Lock design allows quick drive installation and replacement without complicated maintenance procedures. As a result, setting up the device takes very little time and requires no specialised tools.

In the box

• TerraMaster D2-320 enclosure
• Power adapter
• Power cable
• USB-C to USB-C cable (10 Gb/s), 1 m
• Quick start guide
• Set of mounting screws
• Warranty information card