Ultra-Short for Easy Deployment

The D4-320U redefines convenience with its miniaturized 1U rackmount form factor.
Measuring just 241mm (9.49 inches) in depth, 50% shorter than traditional chassis
and weighing 3.2kg, this sleek enclosure fits effortlessly into standard server racks
without the need for rails.

Massive 88TB Storage Capacity

With support for up to four drives, the D4-320U offers a staggering maximum
capacity of 88TB. Operating in single-disk
mode by default, users can leverage third-party software RAID tools to create arrays,
catering to extensive storage needs from media libraries to enterprise backups.

10Gbps Data Transfer

Equipped with the USB 3.2 Gen2 protocol, the D4-320U achieves a blazing 10Gbps bandwidth. When paired with four
8TB WD Red HDDs, it delivers read/write
speeds of up to 1,016MB/s. Even with a
single 1TB WD Red SSD, users can enjoy read speeds of 510MB/s.

NAS Storage Expansion

Optimized for TerraMaster NAS devices running TOS 5.1 or higher, the D4-320U connects via USB to expand storage
pools and create arrays through the robust TOS system. This feature makes it a powerful
companion for users looking to scale their NAS capacity with ease.

Plug-and-Play Simplicity

The D4-320U offers true driver-free, plug-and-play functionality, seamlessly
supporting macOS, Windows, Linux, Ubuntu, TrueNAS, Unraid, and more.
Compatible with USB protocols, it connec effortlessly to PCs, TVs, servers, and set-top boxes.

Automated Backups Made Easy

With TerraMaster TPC Backupper for Windows (8/8.1/10/11), users can schedule incremental or differential backups of folders and partitions to the D4-320U or a TerraMaster NAS.

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