TERRAMASTER D4-320U Hard Drive Enclosure - 4Bay 1U Rack Mount USB 3.2 Gen2 10Gbps Type-C External USB Storage Compact Chassis Hot Swappable Plug and Play (Diskless)

- Compact Design for Seamless Deployment:The D4-320U hard drive enclosure (a DAS, NOT a NAS) redefines convenience with itsminiaturized 1U rackmount form factor. Measuring just 241mm (9.5 inches) indepth, 50% shorter than traditional chassis and weighing 3.2kg, this sleek enclosure fits effortlessly into standard server racks without the need for rails, simplifying installation. Its space-efficient design maximizes room utilization in data centers, storage closets,stairwells, or offices, making it an ideal choice for small businesses and SOHO users seeking centralized storage solutions. - High Speed: The D4-320U HDD enclosure adoptsUSB 3.2 Gen2 protocol for high-speed data transmission up to 10Gbps. With 4 hard drives installed, the read/write speed can reach up to 1,016MB/s (SATA III HDD 8TB x 4). With one hard disk installed, the read speed can reach 510MB/s (SATA III HDD 1TB SSD x 1). - Super-large Storage Space: The D4-320Udirect attached storage can support up to six 3.5" and 2.5" SATA HDD, as well as 2.5" SATA SSD, with a maximum capacity of 30TB per drive, providing users with up to 120TB (30TB x 4) of storage space. Note that the D4-320U does not support arrays and only works with individual disks. - Expandable NAS Integration: Optimized for TerraMaster NAS devices running TOS 5.1 or higher, the D4-320U external HDD enclosureconnects 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, Highly Compatible: The D4-320U USB 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 two USB cables (1 x USB type C-C cable, 1 x USB type A-C cable). The device is compatible with various computer interfaces, including USB 4.0, USB 3.2, USB 3.1, USB 3.0, Thunderbolt 5 , Thunderbolt 4, and Thunderbolt 3.

Product description

D4-320U Rackmount 4Bay USB3.2 10Gbps USB Storage

TERRAMASTER USB Enclosures Comparison

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High-speed data transfer and massive storage capacity: The D4-320U hard drive enclosure features a USB3.2 Gen2 interface providing a 10Gbps data transmission bandwidth. With the capability to support up to four 3.5" and 2.5" SATA HDD, and 2.5" SATA SSD, it offers a maximum drive capacity of 30TB and a storage space of up to 120TB (30TB x 4). When four hard drives are installed (SATA III HDD 8TB x 4 simultaneously read/write), it delivers an actual read/write speed of up to 1,016MB/s, while a single hard disk installation (SATA III HDD 1TB SSD x 1) can reach a read speed of 510MB/s. Please note that the D4-320U does not support the function of array and only supports individual disks.

Strong Compatibility: The D4-320U USB storage comes with two 0.8-meter cables (USB-A to USB-C and USB-C to USB-C),and is plug-and-play, requiring no drivers. It is compatible with a range of computer interfaces, including USB 4.0/3.0/3.1/3.2, Thunderbolt 5/4/3.

Compact Design for Easy Installation: This 1U 4-bay HDD enclosure adopts a space-saving rack-mountable design. With a compact chassis depth of 241mm (9.49 inches) and a weight of 3.2kg, it requires no rails and is easy to install. The 1U height fits standard server racks, enabling centralized deployment with other servers and network equipment. This enhances data center space utilization and is suitable for server rooms, storage rooms, stairwells, offices, and other environments, perfect for small office users.

Better Heat Dissipation: The D4-320U direct attached storage incorporates an intelligent temperature-controlled fan and silent operation design, ensuring efficiency and stability during prolonged use. Its plug-and-play functionality further simplifies installation and usage, making it suitable for users requiring rapid deployment of storage solutions.

Expansion of NAS Storage Space: Professionally optimized by TerraMaster’s team, the D4-320U external HDD storage can connect to TerraMaster NAS devices via USB. Leveraging TerraMaster’s robust TOS system, users can create arrays and storage pools on the device to expand NAS storage capacity, addressing growing data demands. Note: This feature is only compatible with TerraMaster NAS devices running TOS 5.1 or later.

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.

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