QNAP TR-004U 4-Bay Rackmount USB RAID Expansion
Flexible USB Storage with RAID Built into the Enclosure The QNAP TR-004U brings 4 SATA drive positions and hardware RAID into a compact 1U short-depth rackmount enclosure. Connect it to a compatible computer for direct-attached storage, or to a specifically supported QNAP NAS for a separate expansion pool. A 5Gb/s USB interface and a choice of mirrored, striped or parity layouts let you balance usable capacity and drive-failure tolerance. Select the operating mode before loading data and keep an independent backup. Highlights The Right Drive Layout 4 drive positions for the supported disk types. Drives are separate; exact compatibility matters. A Defined Host Connection Hardware RAID with USB 5Gb/s. Host, cable and firmware requirements stay explicit. Practical Installation Powered enclosure with active cooling. Exact optional rail kit required for rack installation. Storage with a Recovery Plan Host-managed applications and camera entitlements. Independent backup remains a separate requirement. Key Features Hardware RAID with a Clear Operating Mode Individual, JBOD, RAID 0, RAID 1, RAID 5 and RAID 10 are available, subject to the required drive counts. The DIP switch selects the hardware layout or software-control mode. Changing RAID settings can erase data, so confirm the layout and backup the contents before making changes. RAID 5 needs at least three drives and tolerates one drive failure; it is not a replacement for a backup. Direct-Attached Storage for Supported Systems 1 × USB 3.2 Gen1 Type-C host connection, up to 5Gb/s. Connect directly to a compatible host without a USB hub or docking station. The same physical connector can support different protocols on other products; this model uses USB. Use an appropriate cable and a compatible operating-system/file-system combination when moving data between computers. Keep NAS Expansion Separate On a supported QNAP NAS, the enclosure forms its own storage pool or volume. It cannot extend the internal NAS pool, and NAS applications cannot be installed on the enclosure. Do not move existing NAS disks into it expecting the old array to be recognised. RAID migration and online capacity expansion are not supported. Manage and Monitor the Way You Work Storage & Snapshots on a supported NAS, or QNAP External RAID Manager on supported Windows/macOS systems. Basic direct-attached storage use and available management features differ by operating system. The hardware RAID processor handles its supported disk layout, while the host still runs file services and applications. This enclosure adds no standalone Ethernet services or surveillance camera licences. Install for Access and Airflow The 1U short-depth rackmount enclosure measures 44 × 439 × 291mm H × W × D, excluding rack ears and protruding power-supply fittings. Optional RAIL-B02 or RAIL-S02, subject to rack-post spacing. Confirm cabinet depth, rack-post spacing and rear cable/service clearance. 100W internal power supply; 100–240V AC input. Supply ratings are power capacity, not constant operating consumption. Keep Backup and Recording Requirements Separate The enclosure adds storage, not a standalone surveillance recorder. Maximum camera channels, included licences, recording performance and retention depend on the host NAS and recording software. Expanding disk space does not automatically increase those limits. Maintain a separate current backup and a tested recovery plan. Any optional NASCare scope must be confirmed for the registered NAS and attached configuration. Summary The TR-004U is a practical way to add USB hardware RAID storage when the complete connection and storage layout have been planned. Match the host, drives and installation hardware first, then size RAID, recording retention and separate backups around the work. This keeps the expansion useful, serviceable and clear to maintain. Frequently Asked Questions Can this work as a standalone NAS?ExpandCollapse No. This is an expansion or direct-attached storage enclosure. It requires a compatible NAS or computer and does not offer independent Ethernet file sharing, NAS applications or surveillance recording. Which RAID modes are available?ExpandCollapse Individual, JBOD, RAID 0, RAID 1, RAID 5 and RAID 10. Hardware mode uses the enclosure DIP switch; software-control mode uses supported QNAP management software. RAID migration and online capacity expansion are not supported; Individual mode does not support drive hot-swap. Which drives can I install?ExpandCollapse 4 × 3.5-inch positions supporting compatible 3.5-inch SATA HDDs, 2.5-inch SATA HDDs and 2.5-inch SATA SSDs. SATA 3Gb/s backplane; 6Gb/s drives operate at the supported 3Gb/s link rate. QDA-A2AR and QDA-A2MAR adapters are not supported. Keep HDD and SSD types in separate RAID groups. Verify exact drive model, firmware, sector format and capacity compatibility. Drives are sold separately. Which host and software do I need?ExpandCollapse Qualified QNAP NAS, Windows, macOS or Linux computer in the supported operating mode. NAS expansion requires an exact supported model and firmware; some older NAS models are excluded. On NAS, the expansion pool remains separate from internal storage. What is included, and do I need rack rails?ExpandCollapse Enclosure, USB Type-C to Type-A cable, power cord, drive mounting screws and Quick Installation Guide. Storage drives and any rack rail kit are separate. Optional RAIL-B02 or RAIL-S02, subject to rack-post spacing. Confirm cabinet depth, rack-post spacing and rear cable/service clearance. Will it increase my maximum surveillance camera count?ExpandCollapse Adding drive space may extend recording retention, but it does not add camera licences or increase the host CPU, memory or software limits. Check the exact NAS, recording application, licence entitlement and workload. RAID and attached expansion are not replacements for an independent backup.
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QNAP TR-004U 4-Bay Rackmount USB RAID Expansion
Paglalarawan
Flexible USB Storage with RAID Built into the Enclosure
The QNAP TR-004U brings 4 SATA drive positions and hardware RAID into a compact 1U short-depth rackmount enclosure. Connect it to a compatible computer for direct-attached storage, or to a specifically supported QNAP NAS for a separate expansion pool. A 5Gb/s USB interface and a choice of mirrored, striped or parity layouts let you balance usable capacity and drive-failure tolerance. Select the operating mode before loading data and keep an independent backup.
Highlights
The Right Drive Layout
- 4 drive positions for the supported disk types.
- Drives are separate; exact compatibility matters.
A Defined Host Connection
- Hardware RAID with USB 5Gb/s.
- Host, cable and firmware requirements stay explicit.
Practical Installation
- Powered enclosure with active cooling.
- Exact optional rail kit required for rack installation.
Storage with a Recovery Plan
- Host-managed applications and camera entitlements.
- Independent backup remains a separate requirement.
Key Features
Hardware RAID with a Clear Operating Mode
Individual, JBOD, RAID 0, RAID 1, RAID 5 and RAID 10 are available, subject to the required drive counts. The DIP switch selects the hardware layout or software-control mode. Changing RAID settings can erase data, so confirm the layout and backup the contents before making changes. RAID 5 needs at least three drives and tolerates one drive failure; it is not a replacement for a backup.
Direct-Attached Storage for Supported Systems
1 × USB 3.2 Gen1 Type-C host connection, up to 5Gb/s. Connect directly to a compatible host without a USB hub or docking station. The same physical connector can support different protocols on other products; this model uses USB. Use an appropriate cable and a compatible operating-system/file-system combination when moving data between computers.
Keep NAS Expansion Separate
On a supported QNAP NAS, the enclosure forms its own storage pool or volume. It cannot extend the internal NAS pool, and NAS applications cannot be installed on the enclosure. Do not move existing NAS disks into it expecting the old array to be recognised. RAID migration and online capacity expansion are not supported.
Manage and Monitor the Way You Work
Storage & Snapshots on a supported NAS, or QNAP External RAID Manager on supported Windows/macOS systems. Basic direct-attached storage use and available management features differ by operating system. The hardware RAID processor handles its supported disk layout, while the host still runs file services and applications. This enclosure adds no standalone Ethernet services or surveillance camera licences.
Install for Access and Airflow
The 1U short-depth rackmount enclosure measures 44 × 439 × 291mm H × W × D, excluding rack ears and protruding power-supply fittings. Optional RAIL-B02 or RAIL-S02, subject to rack-post spacing. Confirm cabinet depth, rack-post spacing and rear cable/service clearance. 100W internal power supply; 100–240V AC input. Supply ratings are power capacity, not constant operating consumption.
Keep Backup and Recording Requirements Separate
The enclosure adds storage, not a standalone surveillance recorder. Maximum camera channels, included licences, recording performance and retention depend on the host NAS and recording software. Expanding disk space does not automatically increase those limits. Maintain a separate current backup and a tested recovery plan. Any optional NASCare scope must be confirmed for the registered NAS and attached configuration.
Summary
The TR-004U is a practical way to add USB hardware RAID storage when the complete connection and storage layout have been planned. Match the host, drives and installation hardware first, then size RAID, recording retention and separate backups around the work. This keeps the expansion useful, serviceable and clear to maintain.
Frequently Asked Questions
Can this work as a standalone NAS?
No. This is an expansion or direct-attached storage enclosure. It requires a compatible NAS or computer and does not offer independent Ethernet file sharing, NAS applications or surveillance recording.
Which RAID modes are available?
Individual, JBOD, RAID 0, RAID 1, RAID 5 and RAID 10. Hardware mode uses the enclosure DIP switch; software-control mode uses supported QNAP management software. RAID migration and online capacity expansion are not supported; Individual mode does not support drive hot-swap.
Which drives can I install?
4 × 3.5-inch positions supporting compatible 3.5-inch SATA HDDs, 2.5-inch SATA HDDs and 2.5-inch SATA SSDs. SATA 3Gb/s backplane; 6Gb/s drives operate at the supported 3Gb/s link rate. QDA-A2AR and QDA-A2MAR adapters are not supported. Keep HDD and SSD types in separate RAID groups. Verify exact drive model, firmware, sector format and capacity compatibility. Drives are sold separately.
Which host and software do I need?
Qualified QNAP NAS, Windows, macOS or Linux computer in the supported operating mode. NAS expansion requires an exact supported model and firmware; some older NAS models are excluded. On NAS, the expansion pool remains separate from internal storage.
What is included, and do I need rack rails?
Enclosure, USB Type-C to Type-A cable, power cord, drive mounting screws and Quick Installation Guide. Storage drives and any rack rail kit are separate. Optional RAIL-B02 or RAIL-S02, subject to rack-post spacing. Confirm cabinet depth, rack-post spacing and rear cable/service clearance.
Will it increase my maximum surveillance camera count?
Adding drive space may extend recording retention, but it does not add camera licences or increase the host CPU, memory or software limits. Check the exact NAS, recording application, licence entitlement and workload. RAID and attached expansion are not replacements for an independent backup.
Mga detalye
QNAP TR-004U 4-Bay Rackmount USB RAID Expansion
The QNAP TR-004U is a 4-bay 1U short-depth rackmount storage enclosure for compatible NAS and direct-attached storage installations. A built-in RAID processor provides supported disk modes, while the host runs applications and file services. Active cooling and enclosure monitoring support everyday operation. The table separates drive support, connection requirements, installation hardware and operating conditions. Drives are sold separately, and actual capacity and performance depend on the complete configuration.
| Specification | Details |
|---|---|
| Architecture and Host Compatibility | |
| Device class | Expansion / direct-attached storage enclosure; not a standalone NAS. |
| Host connection | 1 × USB 3.2 Gen1 Type-C host connection, up to 5Gb/s. Connect directly to a compatible host without a USB hub or docking station. |
| Supported hosts and firmware | Qualified QNAP NAS, Windows, macOS or Linux computer in the supported operating mode. NAS expansion requires an exact supported model and firmware; some older NAS models are excluded. |
| Expansion topology | No promise of enclosure daisy chaining. Use the exact host expansion matrix and a separate supported connection for each enclosure. |
| Drive Support and Storage Management | |
| Drive positions | 4 × 3.5-inch positions supporting compatible 3.5-inch SATA HDDs, 2.5-inch SATA HDDs and 2.5-inch SATA SSDs. SATA 3Gb/s backplane; 6Gb/s drives operate at the supported 3Gb/s link rate. QDA-A2AR and QDA-A2MAR adapters are not supported. |
| Drive access | Hot-swappable drive bays, subject to supported host/RAID procedures. Individual mode does not support drive hot-swap. |
| Drive and RAID conditions | Keep HDD and SSD types in separate RAID groups. Verify exact drive model, firmware, sector format and capacity compatibility. Drives are sold separately. |
| Storage modes | Individual, JBOD, RAID 0, RAID 1, RAID 5 and RAID 10. Hardware mode uses the enclosure DIP switch; software-control mode uses supported QNAP management software. RAID migration and online capacity expansion are not supported; Individual mode does not support drive hot-swap. |
| Management software | Storage & Snapshots on a supported NAS, or QNAP External RAID Manager on supported Windows/macOS systems. Basic direct-attached storage use and available management features differ by operating system. |
| Interface and throughput | 5Gb/s USB interface maximum shared across the enclosure. The internal SATA backplane is 3Gb/s per drive. Actual throughput varies with RAID mode, drives, host and cable. |
| Applications and Surveillance | |
| Applications | Run on the supported host. The enclosure adds no host CPU, memory or independent network services. |
| Maximum camera channels | Determined by the host NAS, recording application, licences and workload. No standalone recorder or camera licence entitlement is included with the enclosure. |
| Installation and Physical Details | |
| Form factor | 1U short-depth rackmount. |
| Rack rails / placement | Optional RAIL-B02 or RAIL-S02, subject to rack-post spacing. Confirm cabinet depth, rack-post spacing and rear cable/service clearance. |
| Dimensions H × W × D | 44 × 439 × 291mm. Excludes rack ears and protruding power-supply parts. |
| Device and retail weight | Net 4.77kg; manufacturer gross 5.67kg. |
| Power and Environment | |
| Power supply | 100W internal power supply; 100–240V AC input. |
| Typical operating consumption | 18.9W in the manufacturer fully populated drive test; actual use varies. Drive-sleep test: 4.79W. |
| Cooling | 2 × 40mm fans. |
| Temperature | Operating 0–40°C; storage −20–70°C. |
| Humidity | 5–95% RH non-condensing; wet-bulb limit 27°C. |
| Supplied Items and Warranty | |
| Package contents | Enclosure, USB Type-C to Type-A cable, power cord, drive mounting screws and Quick Installation Guide. Storage drives and any rack rail kit are separate. |
| Warranty | 3 years for the enclosure; bundled accessories have a separate 1-year manufacturer warranty. |
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