TerraMaster DAS Enclosures: Compare D6-320, D5 and Prices
Compare current TerraMaster DAS offers, including large multi-bay USB enclosures and hybrid HDD plus NVMe designs. See current price, bays, interface, RAID support and configuration.
TerraMaster sells more than one type of DAS. The D6-320 emphasizes six independent SATA disks over a 10Gbps link and does not provide built-in hardware RAID, while other D5 products can include RAID or hybrid SATA and NVMe layouts. Match the exact model to the storage plan.
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TerraMaster DAS is a product family, not one design
The TerraMaster name covers non-RAID multi-bay enclosures, hardware RAID products and hybrid devices. A model number is therefore essential. The D6-320 is a six-bay USB 3.2 Gen 2 enclosure that exposes standalone disks and relies on the host for any array. D5 variants can provide different bay layouts and RAID capabilities.
Cloudzat records the model when detected and does not assume every TerraMaster product supports RAID because another product from the brand does.
D6-320 capacity and 10Gbps connection
TerraMaster describes the D6-320 as a six-bay enclosure for 3.5-inch or 2.5-inch SATA drives with a 10Gbps USB-C link. Current official material states that it does not create a built-in array. The computer can use disks individually or apply supported software storage. This is useful for flexible drive access, large backup sets and software-defined storage.
The product is compatible with USB and Thunderbolt host ports through the supported USB connection, but that does not turn it into a native Thunderbolt enclosure. Real speed depends on the drives and host.
D5 Hybrid combines SATA and NVMe
The D5 Hybrid concept uses two SATA bays and three M.2 NVMe slots. The SATA pair can support selected RAID modes while the NVMe slots operate separately. This can place high-capacity HDD storage and fast working SSDs in one chassis, but it is not automatic caching or tiering unless software moves the data.
A hybrid product should be compared by the number of each bay type, not by the total five-slot label alone. It suits a user who understands where hot and cold data will live.
Software RAID versus TerraMaster hardware modes
A non-RAID enclosure can still be used with operating-system storage tools, but recovery and portability depend on that software. Other TerraMaster D5 products include controller-based RAID. Verify the exact model and mode list before purchase. Similar names and chassis shapes can hide important controller differences.
If the enclosure will connect to a TerraMaster NAS for expansion, consult the NAS compatibility and TOS requirements. A DAS connected to a computer is a different use case from a vendor expansion shelf attached to a supported NAS.
Performance and drive combinations
A six-bay 10Gbps enclosure can move data from several HDDs concurrently, while one HDD remains limited by its own mechanics. SATA SSDs can use more of the link. Hybrid NVMe slots can approach the USB ceiling in favorable workloads. Published results are configuration-specific and should not be treated as guarantees.
For a large independent-disk backup system, the ability to address each drive separately can be more useful than maximum aggregate speed. For editing, choose a layout with predictable sustained performance and verified software support.
Cooling and hot-swap behavior
TerraMaster multi-bay products use active cooling and describe temperature-controlled fan behavior. Keep airflow clear and monitor temperatures with the drives you install. Hot swap may be supported by the hardware, but a disk must still be safely ejected or removed according to the active RAID or file-system rules.
Frequent drive swapping increases the importance of trays, connectors and labels. Maintain a record of drive order for software arrays and backup rotations.
Drive compatibility and maximum capacity
Official capacity claims can change as larger drives are validated. TerraMaster publishes compatibility guidance and warns that unsupported drives can cause disconnections, slow speed or recognition problems. Check the current list for the exact model and drive part number when the system will hold important data.
Use matching drives for arrays. Independent mode can combine sizes, but each disk needs its own file-system and backup plan.
Which TerraMaster DAS fits which user
Choose D6-320-style independent storage for large collections of separate disks, software-defined arrays or NAS expansion where officially supported. Choose a RAID-capable D5 when a compact controller-managed array is the priority. Choose a hybrid product when both SATA capacity and NVMe working storage are needed in one box.
Compare price per bay only after separating these designs. A hybrid slot and a 3.5-inch HDD bay have different value and capacity.
Support lifecycle and migration
TerraMaster model numbers matter during troubleshooting and migration. A D6-320 independent-disk enclosure can usually be replaced differently from a controller-managed D5 RAID product. Record whether the host created software RAID, which operating system owns the array and how the disks were ordered. That documentation is essential if the computer or enclosure fails.
Before upgrading capacity, confirm whether the current layout supports expansion. Independent disks can be replaced one at a time as separate volumes, while a RAID may require a full backup and recreation. A practical migration plan uses another enclosure or temporary storage, verifies the copied data and only then repurposes the old drives.
Quick decision guide
Six independent disks
D6-320 suits users who want many directly attached drives without built-in RAID.
Compact hardware RAID
Choose the exact D5 variant whose controller supports the required levels.
Hybrid workflow
Use HDDs for capacity and NVMe for active files, with deliberate backup software.
Compatibility first
Verify drive part numbers, operating system and firmware for the exact model.
How Cloudzat builds this comparison
TerraMaster products are classified by model, bay types, RAID statements and host interface. The page links to official current specifications for the D6-320 as a reference point.
Technical content reviewed August 1, 2026. Manufacturer specifications and marketplace variants can change.
Frequently asked questions
Does TerraMaster D6-320 support RAID?
The current official D6-320 page states that it operates in standalone disk mode and does not create a built-in array. Software RAID may be possible on the host.
How fast is TerraMaster D6-320?
It uses a 10Gbps USB 3.2 Gen 2 link. Official measured results depend on the installed drives and configuration.
What is TerraMaster D5 Hybrid?
It combines two SATA bays with three M.2 NVMe slots. The storage types have different operating modes.
Can TerraMaster DAS connect to Thunderbolt?
USB models may connect to compatible Thunderbolt ports through USB-C, but they remain USB devices unless specified as native Thunderbolt.
Can I use mixed drive sizes?
Independent mode can. RAID usually uses the smallest member capacity and is safer with matching drives.
Does TerraMaster DAS include drives?
Most enclosure offers are diskless unless the listing states a populated capacity.