Looking Beyond the QNAP 4-Bay USB-C Direct Attached? 6 Alternatives Worth a Look
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The QNAP 4-Bay USB-C Direct Attached Storage offers pre-configured RAID 5 and 12TB of capacity for users who want immediate local storage. It provides a solid plug-and-play solution with hardware RAID modes and cross-platform compatibility. However, you might look for qnap 4 bay das alternatives if your needs differ from these specific specs. You may require a different form factor, such as a rackmount unit, or a higher capacity drive bundle. Some workflows benefit from Thunderbolt connectivity instead of USB-C, while others might need a diskless enclosure for custom drive selection.
This guide compares 6 alternatives that share the core 4-bay architecture and RAID capabilities of the original unit. We selected these options because their specifications overlap with the QNAP TR-004, ensuring they serve similar functions. The list includes rackmount expansion units for server environments and high-capacity Thunderbolt drives for mobile professionals. Each product is evaluated based on its published data, including interface type, supported RAID levels, and physical dimensions. You can compare these options to find the best fit for your specific infrastructure and performance requirements.
How the alternatives differ from QNAP
Synology 4-Bay Rackmount Expansion Unit
The Synology RX418 is a rackmount expansion unit designed specifically for existing Synology NAS users. Unlike the QNAP TR-004, which serves as a standalone desktop DAS or general NAS expansion, this unit adds drive bays directly to your current Synology server. It lacks the USB-C direct connectivity of the QNAP model, meaning you cannot use it as an independent external drive for Windows or macOS. However, it offers seamless integration for Synology owners who need more capacity without replacing their main server. It is also smaller in footprint, fitting tight rack spaces where the bulkier QNAP unit might not fit. Choose this if you are already in the Synology ecosystem and need internal expansion rather than external storage.
G-Technology 32TB G-Speed Shuttle
The G-Technology G-Speed Shuttle uses Thunderbolt 3 instead of USB 3.2 Gen 1. This interface provides significantly higher bandwidth, which matters for 4K and 8K video workflows. The QNAP model relies on slower USB connectivity, which may bottleneck large file transfers. This G-Technology unit comes with 32TB of pre-installed storage and hardware RAID, similar to the QNAP bundle, but it is built for mobility and speed. It is heavier and larger than the desktop QNAP enclosure. You should pick this alternative if you need maximum transfer speeds for professional media creation and already have Thunderbolt 3 ports on your computer. It sacrifices the universal USB compatibility of the QNAP for superior performance.
QNAP 4-Bay USB-C Hardware RAID Enclosure
This QNAP TR-004-US is a diskless version of the original model. It provides the same 4-bay form factor and hardware RAID capabilities but includes no hard drives. The original product ships with 12TB of pre-installed Seagate IronWolf drives configured in RAID 5. This alternative is cheaper if you already have spare drives or prefer to source your own storage separately. It retains the USB-C connectivity and cross-platform support for Windows, macOS, and Linux. Choose this if you want the same QNAP reliability and RAID options but need flexibility in drive selection or already own compatible 3.5-inch SATA drives. It is ideal for users who do not need immediate plug-and-play capacity.
G-Technology 56TB G-Speed Shuttle Thunderbolt 3
The G-Technology 56TB G-Speed Shuttle offers double the storage capacity of the original 12TB QNAP bundle. It uses Thunderbolt 3 for high-speed data transfer, making it suitable for massive video editing projects. Like the other G-Technology model, it lacks the USB-C direct attachment of the QNAP, requiring Thunderbolt ports. It is designed for professionals who need massive local storage in a portable chassis. The QNAP unit is better for general desktop use or NAS expansion due to its USB connectivity and lower price point. Pick this G-Technology drive if your primary need is extreme capacity and speed for 8K workflows, and you already have the necessary Thunderbolt infrastructure.
QNAP TR-004U 4 Bay Rackmount NAS
The QNAP TR-004U is a rackmount expansion unit, not a standalone desktop DAS like the original. It is designed to expand an existing QNAP NAS system via internal connections rather than USB. The original TR-004 connects via USB-C to any computer, offering flexibility for direct attachment. This rackmount model fits into standard server racks and provides hardware RAID for expansion. It is larger and intended for fixed installations. Choose this if you manage a rack-mounted QNAP NAS and need more drive bays without adding another USB device. It is not suitable for users who want a simple external drive for a single computer, as it lacks the direct USB-C interface of the desktop model.
QNAP 4 Bay 1U Rackmount SATA JBOD
The QNAP TL-R400S is a 1U rackmount SATA JBOD enclosure. It uses SATA connections internally rather than USB-C, making it a dedicated expansion tool for rack-mounted servers. Unlike the original QNAP DAS, which offers USB connectivity for direct attachment to PCs, this unit is built for infrastructure where USB is not the primary interface. It supports JBOD mode for simple volume expansion. It is larger and designed for fixed rack installations. Pick this alternative if you have a rack-mounted QNAP NAS or Linux server and need additional SATA bays without using USB. It is not a good choice for users who need a portable, plug-and-play external drive for desktop computers.
Quick picks
Our 7 picks
QNAP 4-Bay USB-C Direct Attached Storage
Best for: plug-and-play local storage and NAS expansion
- Drive Bays
- 4-Bay
- Included Storage
- 12TB
- RAID Support
- RAID 0, 1, 5, JBOD
This direct attached storage enclosure connects directly to your computer or existing network attached storage using a USB 3.2 Gen 1 Type-C interface. It includes four 4TB hard drives pre-installed and pre-configured in RAID 5, giving you 12TB of usable storage right away. With support for Windows, macOS, and Linux, it suits you if you need local hardware-managed storage or an expansion unit without setting up standalone network settings.
Pros
- Four 4TB drives pre-installed in RAID 5
- Supports RAID 0, 1, 5, and JBOD modes
- Lockable drive bays for physical drive security
- Includes 3-year data recovery service plan
Cons
- Internal drive bays support SATA 3Gb/s rather than SATA 6Gb/s
- Direct attached enclosure lacks standalone network connectivity
Good fit if
- You want pre-configured RAID 5 storage ready to use over USB.
- You need to expand the capacity of a PC or existing QNAP system.
Skip if
- You require an independent network connection via Ethernet.
- You need SATA 6Gb/s drive throughput.
Verdict: QNAP 4-Bay USB-C DAS with 12TB Storage provides ready-to-use local capacity with pre-installed drives and hardware RAID modes. It is a solid expansion option if you want direct USB connectivity instead of configuring a networked server.
Synology 4-Bay Rackmount Expansion Unit
Best for: expanding existing Synology NAS storage capacity
- Drive Bays
- 4-Bay
- Included Storage
- Diskless
- Dimensions
- 17 × 11.4 × 1.73 inches
- Weight
- 9.44 pounds
The Synology RX418 is a diskless 4-bay expansion unit designed to increase storage capacity for existing Synology NAS systems. It features a compact 1.73-inch height and 17-inch length, allowing it to fit in 2-post racks. The unit supports online volume expansion and deep sleep mode for energy savings. You can manage it directly through Synology DiskStation Manager (DSM). This device is ideal for users who need more drive slots without buying a new server.
Pros
- 4-bay drive capacity for expanding storage
- Compact 1.73-inch height fits tight spaces
- Supports online volume expansion without downtime
- Includes energy-saving deep sleep mode
Cons
- Sold diskless with no included hard drives
- Requires an existing Synology NAS to function
- Limited to expansion use, not standalone storage
Good fit if
- You already own a Synology NAS and need more drive bays
- You want to expand storage without replacing your current server
- You need a compact unit that fits in a 2-post rack
Skip if
- You need a standalone NAS without an existing server
- You want a device with pre-installed hard drives
- You require a multi-bay unit for a non-Synology system
Verdict: Synology 4-Bay Expansion Unit is a practical add-on for existing Synology users who need more drive bays without replacing their current server. It fits well in tight rack spaces and expands storage seamlessly.
G-Technology 32TB G-Speed Shuttle
Best for: Transportable 4K/8K workflows with hardware RAID
- Drive Bays
- 4-Bay
- Included Storage
- 32TB
- RAID Support
- 0, 1, 5, 10
- Hardware Interface
- Thunderbolt
- Dimensions
- 9.75 × 6.85 × 10.5 inches
- Weight
- 16 pounds
This 4-bay direct attached storage unit uses Thunderbolt connectivity for high-speed data transfer. It offers 32TB of capacity and supports RAID 0, 1, 5, and 10 configurations via built-in hardware. The transportable design weighs 16 pounds and measures 9.75 by 6.85 by 10.5 inches. It suits professionals needing robust RAID protection and portability for 4K or 8K workflows.
Pros
- Supports RAID 0, 1, 5, and 10 via built-in hardware
- Thunderbolt interface for high-speed connectivity
- Transportable design for easy travel
- 32TB storage capacity
Cons
- Heavier than other options at 16 pounds
- Larger footprint with 10.5-inch height
- Does not mention a display or status indicators
Good fit if
- You need hardware RAID protection for 4K or 8K workflows
- You require Thunderbolt connectivity for your host system
- You need a transportable 4-bay storage solution
Skip if
- You prefer a lighter or more compact enclosure
- You need a diskless unit for custom drive selection
- You require a rackmount form factor for server rooms
Verdict: G-Technology 32TB G-Speed Shuttle Thunderbolt 3 delivers reliable hardware RAID and Thunderbolt speed for mobile professionals. It fits users who prioritize transportable, high-capacity storage with built-in redundancy over compact size.
QNAP 4-Bay USB-C Hardware RAID Enclosure
Best for: Expanding QNAP NAS storage with hardware RAID
- Drive Bays
- 4-Bay
- Included Storage
- Diskless
- RAID Support
- RAID 0, 1, 5, JBOD
- Dimensions
- 8.62 × 6.31 × 6.63 inches
- Weight
- 4.08 pounds
The QNAP TR-004 is a diskless 4-bay direct-attached storage unit designed for Windows, macOS, and Linux. It features hardware RAID support for levels 0, 1, 5, and JBOD. This device expands QNAP NAS capacity or serves as external backup storage. It includes a USB Type-C to Type-A connector cable. The unit measures 6.31 by 8.62 by 6.63 inches and weighs 4.08 pounds.
Pros
- Hardware RAID 0, 1, 5, and JBOD support
- Compatible with Windows, macOS, and Linux
- Lockable drive bays for security
- Includes USB Type-C to Type-A cable
Cons
- No internal storage drives included
- Cannot run NAS applications or install OS
- Limited to individual storage pool on host NAS
Good fit if
- You need to expand QNAP NAS capacity
- You require hardware RAID for data redundancy
- You use Windows, macOS, or Linux systems
Skip if
- You want a fully standalone NAS with apps
- You need to combine volumes with the host NAS
- You require pre-installed hard drives
Verdict: QNAP TR-004 4-Bay USB-C DAS is a practical expansion tool for QNAP users needing hardware RAID and cross-platform compatibility. It suits those who want to add secure, redundant storage to an existing NAS setup without running applications locally.
G-Technology 56TB G-Speed Shuttle Thunderbolt 3
Best for: High-capacity 4K/8K video editing workflows
- Drive Bays
- 4-Bay
- Included Storage
- 56TB
- Hardware Interface
- Thunderbolt
- Dimensions
- 9.75 × 6.85 × 10.5 inches
View on Amazon: G-Technology 56TB G-Speed Shuttle Thunderbolt 3
This 4-bay Thunderbolt 3 drive offers 56TB of storage for high-end workflows. It delivers sustained transfer rates up to 1000MB/s, making it suitable for multi-stream 4K and 8K video editing. The unit includes an ev Bay Adapter and measures 6.85 by 10.5 by 9.75 inches. It is designed for users who need transportable, high-capacity storage with fast data movement capabilities.
Pros
- 56TB storage capacity for large media libraries
- Sustained transfer rates up to 1000MB/s
- Optimized for multi-stream 4K and 8K workflows
- Includes ev Bay Adapter accessory
- Transportable 4-bay design
Cons
- Higher capacity than the 12TB and diskless options on this list
- Uses Thunderbolt 3 instead of USB-C
- No mention of rackmount capability for server rooms
Good fit if
- You edit multi-stream 4K or 8K video
- You need high-capacity transportable storage
- Your system supports Thunderbolt 3
Skip if
- You prefer USB-C connections over Thunderbolt
- You need a diskless expansion unit
- You require a rackmount form factor
Verdict: G-Technology 56TB G-Speed Shuttle Thunderbolt 3 fits video professionals who need massive, fast storage in a portable chassis. It is ideal for creators working with high-resolution media who already have Thunderbolt 3 ports.
QNAP TR-004U 4 Bay Rackmount NAS
Best for: expanding QNAP NAS systems with hardware RAID
- Drive Bays
- 4 Bay
- Network Connectivity
- USB 3.0 Type-C
- Form Factor
- Rackmount
- Dimensions
- 21.3 × 16.5 × 7.87 inches
- Weight
- 4.41 pounds
The QNAP TR-004U is a 4-bay rackmount enclosure designed for expansion. It features a USB 3.0 Type-C port for data transfer and supports SATA drives. You can use dip switches to toggle between hardware RAID and software control via a QNAP NAS. The lockable trays prevent accidental drive removal. This unit serves as a direct-attached storage device or a NAS expansion unit for cross-platform file sharing.
Pros
- USB 3.0 Type-C port for data transfer
- Lockable hard drive trays for security
- Dip switches for hardware or software RAID configuration
- Supports four SATA drives
Cons
- Rackmount form factor requires specific mounting space
- Designed primarily for QNAP NAS expansion, not standalone use
- No mention of Thunderbolt or NVMe support
Good fit if
- You need to expand a QNAP NAS system
- You prefer hardware RAID configuration via dip switches
- You have rackmount space available
Skip if
- You need a standalone direct-attached storage device without a NAS
- You require Thunderbolt connectivity for higher speeds
- You need a desktop form factor instead of rackmount
Verdict: The QNAP TR-004U 4-Bay Rackmount Expansion is a specialized enclosure for users expanding a QNAP NAS with hardware RAID options. It fits users who need secure, rackmount storage expansion rather than a standalone desktop DAS.
QNAP 4 Bay 1U Rackmount SATA JBOD
Best for: Rack-mounted SATA storage expansion
- Drive Bays
- 4-Bay
- Included Storage
- Diskless
- Form Factor
- Rackmount
- Hardware Interface
- SATA
- Dimensions
- 21.3 × 16.3 × 7.05 inches
This QNAP TL-R400S is a 4-bay rackmount enclosure designed for SATA drives. It supports 3.5-inch drives and connects via SATA 6Gb/s. The unit includes a QXP-400eS-A1164 PCIe SATA card and an SFF-8088 cable. It serves as storage expansion for QNAP NAS systems, Windows, and Linux computers. The black chassis measures 16.3 by 21.3 by 7.05 inches. It fits standard 1U rack spaces.
Pros
- Supports four 3.5-inch SATA drives
- Includes QXP-400eS-A1164 PCIe SATA card
- Standard 1U rackmount form factor
- SATA 6Gb/s interface speed
Cons
- Sold diskless with no drives included
- Requires a PCIe slot for connection
- Larger footprint than tower DAS units
Good fit if
- You need to expand a QNAP NAS system
- You have available 1U rack space
- You use Windows or Linux servers
Skip if
- You want pre-installed drives
- You need Thunderbolt connectivity
- You prefer a compact tower design
Verdict: QNAP TL-R400S 4-Bay Rackmount SATA JBOD provides a dedicated 1U solution for users with rack infrastructure. It fits those needing SATA expansion for QNAP NAS or Linux servers without requiring USB-C.
Specifications side by side
| Spec | QNAP 4-Bay USB-C Direct Attached Storage | Synology 4-Bay Rackmount Expansion Unit | G-Technology 32TB G-Speed Shuttle | QNAP 4-Bay USB-C Hardware RAID Enclosure | G-Technology 56TB G-Speed Shuttle Thunderbolt 3 | QNAP TR-004U 4 Bay Rackmount NAS | QNAP 4 Bay 1U Rackmount SATA JBOD |
|---|---|---|---|---|---|---|---|
| Drive Bays | 4-Bay | 4-Bay | 4-Bay | 4-Bay | 4-Bay | 4 Bay | 4-Bay |
| Network Connectivity | not specified | not specified | not specified | not specified | not specified | USB 3.0 Type-C | not specified |
| Included Storage | 12TB | Diskless | 32TB | Diskless | 56TB | not specified | Diskless |
| RAID Support | RAID 0, 1, 5, JBOD | not specified | 0, 1, 5, 10 | RAID 0, 1, 5, JBOD | not specified | not specified | not specified |
| Form Factor | not specified | not specified | not specified | not specified | not specified | Rackmount | Rackmount |
| Hardware Interface | not specified | not specified | Thunderbolt | not specified | Thunderbolt | not specified | SATA |
| Number of Bays | 4-Bay | 4-Bay | 4-Bay | 4-Bay | 4-Bay | 4-Bay | 4-Bay |
| Dimensions | not specified | 17 × 11.4 × 1.73 inches | 9.75 × 6.85 × 10.5 inches | 8.62 × 6.31 × 6.63 inches | 9.75 × 6.85 × 10.5 inches | 21.3 × 16.5 × 7.87 inches | 21.3 × 16.3 × 7.05 inches |
| Weight | not specified | 9.44 pounds | 16 pounds | 4.08 pounds | not specified | 4.41 pounds | not specified |
| Size | 4 Bay | 44 mm x 480 mm x 325 mm | 32TB | 4 Bay | 56TB | 4 Bay | 4 Bay |
| Color | Black | black | Black | Diskless | not specified | Black | black |
| Model | TR-004 | RX418 | 0G10077 | TR-004-US | 0G10401 | TR-004U | TL-R400S |
If you require faster interface bandwidth, you can evaluate acasis 40gbps 4 bay hard drive alternatives for comparison.
Frequently asked questions
Is the Synology RX418 compatible with QNAP NAS devices?
No. The Synology RX418 is designed specifically for expanding existing Synology NAS storage capacity. It acts as a practical add-on for Synology users who need more drive bays without replacing their current server. It does not support QNAP systems.
Which option offers the highest storage capacity?
The G-Technology 56TB G-Speed Shuttle Thunderbolt 3 offers the highest capacity at 56TB. It fits video professionals who need massive, fast storage in a portable chassis. It is ideal for creators working with high-resolution media who already have Thunderbolt 3 ports.
Does the QNAP TR-004-US come with hard drives installed?
No. The QNAP TR-004-US is a diskless 4-Bay USB-C Hardware RAID Enclosure. It is a practical expansion tool for QNAP users needing hardware RAID and cross-platform compatibility. You must purchase and install your own drives to use it.
Can I use these units in a server rack?
Yes, several models support rackmount form factors. The Synology RX418, QNAP TR-004U, and QNAP TL-R400S are all rackmount options. The TR-004U is a specialized enclosure for expanding a QNAP NAS, while the TL-R400S provides dedicated 1U SATA expansion for rack infrastructure.
Is Thunderbolt 3 faster than USB-C for these drives?
Thunderbolt 3 typically offers higher bandwidth than standard USB-C. The G-Technology Shuttle models use Thunderbolt 3 for reliable hardware RAID and speed. They are suited for mobile professionals who prioritize transportable, high-capacity storage with built-in redundancy over compact size.
Which model is best for Linux servers without USB-C?
The QNAP TL-R400S is designed for this use case. It provides a dedicated 1U solution for users with rack infrastructure. It fits those needing SATA expansion for QNAP NAS or Linux servers without requiring USB-C connectivity.
Is the QNAP TR-004 suitable for 4K video editing?
The QNAP TR-004 is best for plug-and-play local storage and NAS expansion. It provides ready-to-use local capacity with pre-installed drives and hardware RAID modes. It is a solid expansion option if you want direct USB connectivity instead of configuring a networked server.