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D2-320 USB RAID Enclosure USB 3.2 Gen 2 10Gbps Type C 2Bay Direct AttachedSpecification Hardware Interface USB 3.2 Gen 2 Hardware Platform Windows, Mac, Linux Compatible Devices Hard Disk, SSD Hard Disk Form Factor 3.5 Inches Supported Devices Quantity 1 Data Transfer Rate 10 Gigabits Per Second Connectivity Technology USB Color Black Enclosure Material Plastic Item Dimensions L x W x H 8.74"L x 4.69"W x 6.06"H Item Weight 1.3 Kilograms Built-In Media Power Adapter, Quick Installation Guide, USB Cable Model Number D2-320 Mfr Part Number usb_enclosure Warranty Description 2 Years Product Dimensions 8.74"L x 4.69"W x 6.06"H 6.06 inches x 8.74 inches x 4.69 inches. Weight: 1.3 kg
Item Description

Product descriptionThe video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.TERRAMASTER D2-320 10Gbps USB RAID Storage1 Multi-Functional2 Multiple RAIDs Supported3 USB 3.2 10Gbps Interface4 Superspeed Transmission5 Large Capacity Space1 Effortless Windows Backup2 Expand NAS Space3 Expand PC//Linux Space4 A DAS, NOT a NAS1 Reliable HDD Enclosure2 Better Heat Dissipation3 Intelligent Disk Sleep4 Various Applications1 Push-Lock Design2 Tool-Free3 No Need of Drivers4 Compact Size

High-speed data transfer and multiply raid modes supported: The D2-320 hard drive enclosure features a USB3.2 Gen2 interface providing a 10Gbps data transmission bandwidth. With the capability to support up to two 3.5" and 2.5" SATA HDD, and 2.5" SATA SSD, it offers a maximum drive capacity of 22TB and a storage space of up to 44TB (22TB x 2). 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). The D2-320 direct attached storage is a hardware RAID enclosure and it supports multiply RAID modes including RAID 0, 1, JBOD and Single.

Highly Compatible Interface: The D2-320 USB storage comes with a 1-meter USB Type-C to Type-C cable. It is compatible with a range of computer interfaces, including USB 3.0/3.1/3.2, Thunderbolt 3/4.

Expansion of NAS Storage Space: The D2-320 DAS storage is compatible with TerraMaster NAS via USB interface with proper adaptation. Users can expand the NAS storage space by creating arrays and storage pools on D2-320 either through the D2-320 itself or through TerraMaster TOS. Note: the feature of creating RAID via TerraMaster TOS requires TerraMaster NAS with TOS 5.1 or later version.

Better Heat Dissipation and Intelligent Disk Sleep: The D2-320 HDD enclosure features a temperature-controlled fan that adjusts its speed according to the hard disk's temperature for optimal performance. Its internal structure is optimized to increase air pressure, reduce hard disk temperature, and minimize noise and resonance. These features enable the D2-320 to operate quietly even under heavy load. The D2-320 HDD storage supports the sleep function to reduce power consumption and extend the hard disk's service life by following the computer OS's sleep mode.

Convenient to swap hard drives: The D2-320 hard drive dock 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. As a result, installing a hard drive takes less than 10 seconds, providing great convenience for users who frequently swap hard drives to exchange data.

Note: Some mini PCs may have weaker USB signal output, which can cause random interruptions during file read/write operations during data transmission. When this occurs, it is recommended to 1) use the rear USB ports of the computer, as they typically provide a more stable signal; 2) test the device on another known-good computer to rule out hardware issues on the original PC; and 3) use a 10Gbps USB-A/USB-C hub or splitter with a short 0.3m–0.5m cable to reduce signal loss.

TERRAMASTER HDD Enclosure Comparison Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.2 out of 5 stars 558 4.0 out of 5 stars 38 3.7 out of 5 stars 83 4.2 out of 5 stars 558 Price $103.99$103.99 $175.99$175.99 $224.99$224.99 $151.99$151.99 Drive Bays 2 2 Bays + 3 x M.2 NVMe Slots 4 Bays + 4 x M.2 NVMe Slots 4 Interface USB3.2 10Gpbs Type C USB3.2 10Gpbs Type C USB3.2 10Gpbs Type C USB3.2 10Gpbs Type C Max. number of HDDs/SSDs 2 x 2.5" or 3.5" SATA 6Gb/s 2 x SATA HDD/SSD; 3 x M.2 SSD 4 x SATA HDD/SSD; 4 x M.2 SSD 4 x 2.5" or 3.5" SATA 6Gb/s Max. Storage 44TB (22TB x 2) 44TB (22TB x 2) 120TB (22TB x 4 + 8TB x 4) 88TB (22TB x 4) Reading Speed (max.) 854MB/s (2 SSD, in RAID 0) 980MB/s (1 NVMe SSD, Single) 980MB/s (1 NVMe SSD, Single) 1025MB/s (4 SSD, Single Disk) Writing Speed (max.) 884MB/s (2 SSD, in RAID 0) 866MB/s (1 NVMe SSD, Single) 866MB/s (1 NVMe SSD, Single) 1016MB/s (4 SSD, Single Disk) Hardware RAID ✔ ✔ ✔ ✘ RAID Mode RAID 0, 1, JBOD, Single RAID 0, 1, JBOD, Single RAID 0, 1, JBOD, Single No RAID RAID Features RAID 0, 1, JBOD, Single HDD1&2 - RAID 0/1/Single/JBOD HDD1&2 - RAID 0/1/Single/JBOD No RAID RAID Auto-rebuilding RAID1 RAID1 RAID1 No RAID Push-Lock Tray ✔ ✔ ✔ ✔

• High Speed: 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 RAIDs supported: 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 Space: 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.
• Better Heat Dissipation: 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.
• Convenient to swap hard drives: 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.

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