TerraMaster D6-320 USB3.2 Gen2 External Hard Disk Enclosure Launched at £270
I have previously reviewed the TerraMaster TD2 Thunderbolt DAS and the D5-300C USB3.0 5-Bay RAID DAS and was impressed with both of them. They are ideal for content creators that need access to large amounts of storage with faster speeds than you’d see on a NAS. They also cost a lot less money than the equivalent NAS.
TerraMaster has now announced the D6-320. This is a 6-bay DAS that supports 6x22TB drives for up to 132TB of storage.
It then has the latest USB3.2 Gen2 port, which is capable of 10Gbps data transmission bandwidth, with the actual read/write speed up to 1,016MB/s when 6 hard drives are installed (WD Red 8TB x 6 simultaneously read/write); with only one hard disk installed, the read speed could reach 510MB/s (WD Red 1TB SSD x 1).
The D6-320 is compatible with various hard disks, such as 3.5-inch and 2.5-inch SATA hard disks, and 2.5-inch SATA SSD. It also supports hot swapping.


Unlike the D5-300C I previously reviewed, the D6-320 lacks any sort of built-in RAID functionality and only supports JBOD single-disk working mode. However, you can set up a software RAID through Windows, using either Storage Spaces or Disk Management. There are also various other RAID solutions, such as SnapRAID.
One interesting use of this DAS is to expand the storage of a TerraMaster NAS. You can connect via USB and then create storage pools on the D6-320 with the NAS. This requires TOS 5.1 or above.
The TerraMaster D6-320 is available to buy now. It has an RRP of £299 but it has already been reduced on Amazon to £270.
- High Speed: The D6-320 hard drive enclosure adopts USB 3.2 Gen2 protocol for high-speed data transmission up to 10Gbps. With 6 hard drives installed, the read/write speed can reach up to 1,030MB/s (SATA III HDD 8TB x 6). With one hard disk installed, the read speed can reach 510MB/s (SATA III HDD 1TB SSD x 1).
- Super-large Storage Space: The D6-320 HDD storage enclosure can support up to six 3.5" and 2.5" SATA HDD, as well as 2.5" SATA SSD, with a maximum capacity of 22TB per drive, providing users with up to 132TB (22TB x 6) of storage space. Note that the D6-320 does not support arrays and only works with individual disks.
- Plug and Play, Highly Compatible: The D6-320 das storage is a plug-and-play device that doesn't require drivers to work. It is highly compatible with MAC, Windows, and Linux operating systems. It has a USB Type-C interface and comes with a USB type A-type C cable. The device is compatible with various computer interfaces, including USB 3.0, USB 3.1, USB 3.2, Thunderbolt 3, and Thunderbolt 4.
- Hot Swappable: The D6-320 USB enclosure supports hot swapping, which allows you to replace the hard disk without having to power off the device. This feature makes data transfer more convenient and efficient.
- Better Heat Dissipation: The D6-320 USB storage has an intelligent temperature-controlled and low-noise fan that automatically adjusts its speed based on the temperature of the hard disk. This feature ensures that the hard disk operates at its best temperature and provides better heat dissipation.








