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4 Bay Raid Hard Comparison - May 2026
| 1 Best Choice  9.9Exceptional | 2  9.8Exceptional | 3  9.7Exceptional | 4  9.6Exceptional | 5 9.5Excellent | 6  9.2Excellent |
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ModelOWC ThunderBay 4 0TB Four-Bay Thunderbolt 40Gb/s RAID Storage Enclosure | Model Mediasonic Raid 4 Bay 3.5" SATA Hard Drive Enclosure DAS - USB 3.2 Gen 2 10Gbps USB Type C Support 30TB | USB Hub | Daisy Chain (HFR7-SU31CH) | Model TERRAMASTER D4-320 External Hard Drive Enclosure - 4bay USB 3.2 Gen2 10Gbps Type-C USB Storage Hot Swappable Plug and Play (Diskless) | Model CENMATE 4 Bay Hard Drive Enclosure with Cooling Fan for 2.5/3.5" SATA HDD/SSD with USB A/C 3.0 Cable, Tool-Free HDD Enclosure, 3.5 Hard Drive Enclosure Support 80TB, Hot Swappable(NO RAID/NAS) | Model CENMATE 4 Bay Hard Drive RAID Enclosure with Cooling Fan for 2.5/3.5" SATA HDD/SSD with USB A/C 3.0＋eSATA Cable, 3.5 Hard Drive Reader Supports 80TB Capacity, 8 RAID Modes, DAS(NO NAS) | Model CENMATE Aluminum Dual Bay Hard Drive RAID Enclosure with Cooling Fan for 2.5“/3.5" SATA HDD/SSD with USB A/C 3.0, Tool-Free HDD Enclosure, 4 Modes(Support RAID 1/0/JBOD/NORMAL) |
BrandOWC | Brand Mediasonic | Brand TERRAMASTER | Brand cenmate | Brand cenmate | Brand cenmate |
Reviews | Reviews | Reviews | Reviews | Reviews  | Reviews |
Tech Specs | |||||
product dimensions3.94 x 1.97 x 0.5 inches | product dimensions 6.77 x 5.03 x 8.85 inches | product dimensions 8.74 x 7.04 x 6.06 inches | product dimensions 9.8 x 8.7 x 7.1 inches | product dimensions 7.9 x 5.2 x 5.5 inches | product dimensions - |
item weight9.46 pounds | item weight 3.84 pounds | item weight 3.26 pounds | item weight 4.86 pounds | item weight 4.62 pounds | item weight - |
hard disk form factor3.5 Inches | hard disk form factor 3.5 Inches | hard disk form factor - | hard disk form factor 3.5 Inches | hard disk form factor - | hard disk form factor 3.5 Inches |
data transfer rate1527 Megabits Per Second | data transfer rate 10 Gigabits Per Second | data transfer rate - | data transfer rate 5 Gigabits Per Second | data transfer rate - | data transfer rate 6 Gigabits Per Second |
max number of supported devices4 | max number of supported devices 4 | max number of supported devices - | max number of supported devices 4 | max number of supported devices 4 | max number of supported devices - |
memory storage capacity- | memory storage capacity 18 TB | memory storage capacity - | memory storage capacity 72 TB | memory storage capacity 80 TB | memory storage capacity - |
Review- | Review | Review - | Review - | Review - | Review - |
Available On | Available On   | Available On  | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.9
1OWCOWC ThunderBay 4 0TB Four-Bay Thunderbolt 40Gb/s RAID Storage Enclosure
Why we love it
High-speed data transfer with Thunderbolt 3 ports.
Versatile drive compatibility without adapters.
User-configurable RAID for flexible storage solutions.
Main highlights- Works with 3.5" or 2.5" drives — no adapter needed
- User configurable in RAID 0/1/4/5/1+0 (10)
- Up to 1527MB/s sustained performance
- Ultra quiet, heat dissipating aluminum chassis
- 4-Drive SSD Storage Solution with Dual Thunderbolt 3 Ports
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9.8
2Mediasonic
Mediasonic Raid 4 Bay 3.5" SATA Hard Drive Enclosure DAS - USB 3.2 Gen 2 10Gbps USB Type C Support 30TB | USB Hub | Daisy Chain (HFR7-SU31CH)
Why we love it
1. Powerful: 10Gbps transfer rate and up to 16TB per drive.
2. Versatile: USB Type A and C ports, 3.5 and 2.5 SATA, UASP support.
3. Convenient: One button control, Smart Fan, Power On/Off sync.
Main highlights- User Manual download at Product Guide Section below
- Transfer rate up to 10Gbps via USB 3.2 Gen 2. USB-C to USB -C with E-Mark IC cable is included. (3.3ft)
- Support Windows / Mac OS / Linux
- Support UASP, S.M.A.R.T, Smart Fan, and Power On / Off in synchronization with computer (Does not support auto Power-On due to power failure)
- Support Daisy Chain Up to 2 more devices. Easily expand your storage with this 4-bay hard drive enclosure, featuring USB-C connectivity and daisy chain capability to link multiple units. Supports 3.5"/2.5" SATA drives with tool-free installation, ideal for high-capacity data backup and media workflows.
- Support 3.5” SATA 1 / 2 / 3 6.0Gbps hard disk drive up to 30TB per drive, and 2.5” SATA SSD / HDD (additional bracket required sold separately)
- Product Made in Taiwan
- Hardware Raid controller built-in on board with one-button control, support Single Drive Mode, Raid 0 / 1. DAS Direct Attached Storage USB 3.2 Gen 2 Type C
- Built-In USB Hub provides easy access to additional USB Type A and USB Type C connection for expansion.
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9.7
3TERRAMASTER
TERRAMASTER D4-320 External Hard Drive Enclosure - 4bay USB 3.2 Gen2 10Gbps Type-C USB Storage Hot Swappable Plug and Play (Diskless)
Why we love it
Fast data transfer speeds.
Easy plug-and-play setup.
Quiet and efficient operation.
Main highlights- Tool-Free Hard Drive Management: Featuring a tool-free hard drive tray design, the D4-320 external HDD enclosure enables easy installation and removal of hard drives without requiring additional tools. Furthermore, the D4-320 incorporates TerraMaster's unique Push-lock design, automatically securing the hard drive tray upon insertion, preventing the hard drive from falling out or disconnecting.
- Plug-and-Play Compatibility: The D4-320 USB storage supports 4 individual disks (NO RAID function), and is plug-and-play, eliminating the need for drivers. It is highly compatible with MAC, Windows, and Linux operating systems. The USB Type-C interface supports various computer interfaces, including USB 3.0, USB 3.1, USB 3.2, Thunderbolt 3, and Thunderbolt 4.
- Hot Swappable Convenience: The D4-320 HDD enclosure supports hot swapping, allowing users to replace hard disks without powering off the device. This feature enhances convenience and efficiency in data transfer processes.
- High-Speed Data Transmission: The D4-320 hard drive enclosure (a DAS, NOT a NAS) utilizes the USB 3.2 Gen2 protocol, achieving high-speed data transmission of up to 10Gbps. When equipped with four hard drives, the actual read/write speed can reach up to 1,016 MB/s (combined read/write with four SATA III HDDs of 8TB each). With just one SSD installed, the read speed effortlessly reaches 510 MB/s (SATA III 1TB SSD). The D4-320 supports a single HDD up to 30TB, with a total capacity of 120TB, and is compatible with various hard drives, including 3.5-inch SATA hard drives, 2.5-inch SATA hard drives, and 2.5-inch SATA SSDs.
- Efficient Heat Dissipation and Quieter Operation: The D4-320 direct attached storage incorporates an intelligent temperature-controlled fan for optimal heat dissipation. Additionally, specialized sound-absorbing panels and vibration damping measures contribute to a quieter operation, with noise levels reduced by up to 50% compared to the previous generation. In standby mode, the noise level drops below 21 dB(A), creating a remarkably quiet user environment.
Our ranking system
At bestchoice.com, our team curates a selection of top products from a vast array available online, using a sophisticated ranking system based on carefully defined criteria.While traditional hands-on testing has its merits, our use of AI technology offers distinct advantages. AI allows us to process and analyze vast amounts of data from multiple sources, providing a comprehensive view that goes beyond what manual testing can achieve. This approach enables us to deliver insights that are aligned with current trends and consumer preferences, ensuring our reviews are both relevant and up-to-date.
Features
Our AI-driven analysis examines key attributes, capabilities, and other critical factors tailored to each product category. This method allows us to assess effectiveness from various perspectives, ensuring a well-rounded evaluation.
Consumer Reviews
We aggregate and evaluate consumer feedback from across the internet, giving weight to ratings and reviews that reflect the most reliable insights. AI enhances this process by filtering and prioritizing data, offering a balanced view without the need for direct personal endorsements.
Popularity
Our system also considers the popularity of products, analyzing factors such as market presence, reputation, and user satisfaction. By leveraging AI, we capture a comprehensive picture of a product's standing in the market, which may not always be evident through traditional testing.
Value for money
AI allows us to compare products based on attributes like price, specifications, and user feedback, helping to determine their value for money. This data-driven approach offers an efficient and reliable way to assess how products stack up against one another in terms of cost-effectiveness.
