TERRAMASTER
TERRAMASTER D2-320 USB RAID Enclosure 2-Bay
Status: TERRAMASTER D2-320 USB RAID Enclosure 2-Bay: Unavailable on Amazon as of . SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.
Bottom line: The TERRAMASTER D2-320 USB RAID Enclosure 2-Bay: Hardware RAID 0, 1, JBOD and Single modes for speed or mirrored backup; main trade-off: DAS, not NAS: tethered to one host over USB, no network access.
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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:
Similar: CENMATE Aluminum 4 Bay 10Gbps Hard Drive… — $139.99 on Amazon as of 2026-10-21 16:13 UTC (price may vary).
Similar: WAVLINK 4-Bay Hard Drive Enclosure for 3.5" and… — $121.99 on Amazon as of 2026-10-21 12:20 UTC (price may vary).
Similar: Acer 8 in 1 USB C Hub 10Gbps — $29.99 on Amazon as of 2026-10-21 16:26 UTC (price may vary).
Pros & Cons
Pros
- ✓ Hardware RAID 0, 1, JBOD and Single modes for speed or mirrored backup
- ✓ USB 3.2 Gen 2 10Gbps: up to 521MB/s HDD, 1075MB/s SSD read in RAID 0
- ✓ Fits two 3.5"/2.5" SATA drives up to 22TB each, 44TB total
- ✓ Tool-free trays with Push-lock auto-locking drive insertion
- ✓ Temperature-controlled low-noise fan adjusts to drive heat
Cons
- ✗ DAS, not NAS: tethered to one host over USB, no network access
- ✗ Ships diskless, so you buy two SATA drives separately
- ✗ RAID 1 mirroring halves usable space to one drive's capacity
- ✗ Only 2 bays, no expansion beyond two drives
SpecPicks Verdict
SpecPicks scored TERRAMASTER D2-320 USB RAID Enclosure 2-Bay using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. TERRAMASTER's external storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- High Speed Data Transmission: The D2-320 hard drive enclosure (a DAS, NOT a NAS) adopts USB 3.2 Gen2 protocol for high-speed data transmission up to 10Gbps. With 2 hard drives in RAID 0, the read/write speed can reach up to 521MB/s (SATA III HDD 8TB x 2). With 2 SSD's in RAID 0, the read speed can reach 1075MB/s (SATA III 1TB SSD x 2)
- Multiple RAID Configurations: The D2-320 is a hardware RAID enclosure and it supports RAID 0, RAID 1, JBOD and SINGLE which can better satisfy various demands of users. In RAID 1, data will be in a mirror backup. When there is a damaged hard drive, you can directly replace the hard drive, and the data will be recovered automatically. This provides an absolute security for the data
- Super-Large Storage Capacity: The D2-320 USB storage enclosure can support up to two 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 44TB (22TB x 2) of storage space
- Intelligent Temperature Control: The D2-320 HDD enclosure 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
- Tool-Free Hard Drive Installation: The D2-320 external hard drive enclosure features a tool-free hard drive tray design that allows for easy installation and removal of hard drives without the need for any tools. Furthermore, the D2-320 incorporates a brand new Push-lock unique design from TerraMaster, which automatically locks the hard drive tray when you insert the hard drive, preventing the hard drive from falling out or disconnecting
Full Specifications
| Brand | TERRAMASTER |
|---|---|
| Color | Black |
| Connectivity | USB |
| Model Number | D2-320 |
| Built-In Media | Power Adapter, Quick Installation Guide, USB Cable |
| Mfr Part Number | usb_enclosure |
| Hardware Platform | Windows, Mac, Linux |
| Compatible Devices | Hard Disk, SSD |
| Data Transfer Rate | 10 gigabits_per_second |
| Enclosure Material | Plastic |
| Hardware Interface | USB 3.2 Gen 2 |
| Warranty Description | 2 Years |
| Hard Disk Form Factor | 3.5 inches |
| Connectivity Technology | USB |
| Item Dimensions L x W x H | 8.74"L x 4.69"W x 6.06"H |
| Supported Devices Quantity | 1 |
| Full listing title | TERRAMASTER D2-320 USB RAID Enclosure 2-Bay | USB 3.2 Gen 2 10Gbps Type C Direct Attached Storage Supports RAID 0, 1, Single, JBOD (Diskless) |
Ready to buy?
Amazon shows no buyable offer for TERRAMASTER D2-320 USB RAID Enclosure 2-Bay at the last check. A similar in-stock product is CENMATE Aluminum 4 Bay 10Gbps Hard Drive…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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