TERRAMASTER D4-320U Server, 4-bay Enclosure, USB 3.2, 10 Gbps, Diskless

All about the product

TERRAMASTER D4-320U 4-Bay DAS Enclosure

The TerraMaster D4-320U is a high-performance DAS enclosure with 4 SATA HDD and SSD bays, designed to expand the storage capacity of servers, workstations, and NAS devices. With a USB 3.2 Gen 2 Type-C interface, which has a bandwidth of up to 10 Gb/s, the device ensures fast data access and transfer speeds of up to 1016 MB/s. The enclosure supports up to 96 TB capacity and is compatible with Windows, macOS, Linux, Proxmox, TrueNAS, and Unraid, while its compact design (just 241 mm deep) allows for convenient mounting even in small server racks.

More Storage Space without Changing Infrastructure

The D4-320U makes it easy to increase available storage space without changing existing servers or arrays. Four bays support 3.5-inch SATA HDDs, 2.5-inch HDDs, and 2.5-inch SSDs, allowing users to choose the storage media that best meets their needs. With a maximum capacity of 96 TB, the device is ideal for data archiving, backup storage, and working with large file sets. This solution is designed for businesses and users who need scalable storage in a compact form.

Data Transfer Speeds up to 10 Gb/s

The enclosure uses a USB 3.2 Gen 2 Type-C interface, which provides up to 10 Gb/s bandwidth. Testing with four disks achieved actual read and write speeds of up to 1016 MB/s, allowing you to efficiently copy large data volumes and perform complex tasks. Using a single SSD, the transfer speed can reach 560 MB/s, ensuring fast processing of documents, multimedia, and backups. High performance means shorter execution times for daily operations and greater convenience.

Wide Compatibility and Support for Multiple Systems

The enclosure is compatible with Windows, macOS, and Linux, as well as with popular server and virtualization platforms such as Proxmox, TrueNAS, and Unraid. The Plug & Play feature eliminates the need for driver installation, so the device is ready to use immediately after connection. The package includes USB-C to USB-C and USB-A to USB-C cables, which facilitate integration with various computers and servers. Additionally, compatibility with USB 3.0, USB 3.1, USB 3.2, Thunderbolt 3, and Thunderbolt 4 ports ensures high flexibility in expanding infrastructure.

Expansion of TerraMaster NAS Server Storage

The D4-320U has been optimized for use with TerraMaster NAS servers running TOS 5.1 or later. By connecting the device via USB, you can create additional storage pools and expand your existing data storage capacity. This solution allows you to grow your data storage environment as your business expands, without investing in additional servers. It’s a convenient way to increase the capacity of an existing NAS system.

Stable and Quiet Operation Over Time

Three fans with an intelligent temperature control system ensure efficient cooling. Automatic speed adjustment helps maintain optimal drive operating conditions even under heavy load. The device has a noise level of about 26.7 dB(A), making it suitable for use in an office environment. The disk sleep function further reduces power consumption during inactivity periods.

Included in the Box

• TerraMaster D4-320U enclosure
• Power adapter
• Power cable
• 10 Gb/s USB-C to USB-C cable (0.8 m)
• USB-A to USB-C 10 Gb/s cable (0.8 m)
• Mounting screw kit
• Quick start guide
• Warranty card