TERRAMASTER D2-320 DAS Drive Enclosure, 2 bays

TERRAMASTER D2-320 DAS Enclosure with 2 Bays

The TerraMaster D2-320 is an external DAS (Direct Attached Storage) enclosure featuring two bays compatible with SATA HDDs and SSDs. It supports 3.5" and 2.5" SATA hard drives and solid-state drives, offering a maximum total capacity of up to 44 TB (2 × 22 TB). Equipped with a USB 3.2 Gen 2 Type-C interface providing up to 10 Gb/s bandwidth, it enables fast data transfer speeds. In RAID 0 configuration with two SSDs, the device can reach read speeds up to 1075 MB/s and write speeds up to 956 MB/s. It is compatible with Windows, macOS, and Linux operating systems, ensuring broad integration possibilities.

Flexible Storage Configuration

The two drive bays allow users to customize storage setups according to their needs. High-capacity HDDs can be used for data archiving, while fast SSDs are suitable for handling large files and projects. The maximum supported capacity of 44 TB accommodates extensive libraries of photos, videos, backups, or company documentation. Support for multiple storage formats simplifies expansion and management of storage space.

Hardware RAID for Performance and Data Security

The D2-320 supports hardware RAID modes including RAID 0, RAID 1, JBOD, and Single Disk. RAID 0 enhances performance by striping data across both drives, while RAID 1 mirrors data for redundancy and increased security. JBOD mode combines the capacity of both drives into a single volume. The enclosure features automatic array recovery to simplify data management and improve reliability.

High-Speed 10 Gb/s USB-C Interface

The enclosure includes a USB-C port compliant with USB 3.2 Gen 2 standard, offering high bandwidth and compatibility with USB 3.0, 3.1, 3.2, Thunderbolt 3, and Thunderbolt 4 ports. When configured with two SSDs in RAID 0, it achieves read speeds up to 1075 MB/s and write speeds up to 956 MB/s, depending on the storage media and system configuration.

Quiet Operation and Efficient Cooling

An intelligent, speed-controlled fan maintains optimal operating temperatures by adjusting cooling intensity based on drive load. The enclosure design optimizes airflow and reduces vibration, resulting in quiet operation with noise levels around 23.8 dB(A) under full load.

Energy Efficiency and NAS Expandability

The D2-320 supports smart disk sleep mode coordinated with the host computer’s operating system to reduce power consumption and wear when idle. It includes power surge protection to safeguard the device and installed drives. Additionally, it can function as a storage expansion unit for compatible TerraMaster NAS servers running TOS 5.1 or later.

Compact Design and Easy Drive Installation

Despite its high capacity and features, the enclosure has compact dimensions of 222 × 119 × 154 mm and weighs approximately 1.3 kg, making it suitable for desktop or home data center use. The Push-Lock design enables quick installation and replacement of drives without tools, facilitating fast setup and maintenance.

Included Accessories

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

Technical 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 × SSDs in RAID 0)
• Maximum Write Speed: Up to 956 MB/s (2 × SSDs 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