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4-bay 1U short-depth USB RAID enclosure

QNAP TR-004U 4-Bay 1U USB 3.2 Gen 1 RAID Expansion Enclosure

The QNAP TR-004U is a diskless four-bay, short-depth rackmount RAID expansion enclosure. It can expand compatible QNAP NAS or computer storage and can also operate as direct-attached storage through USB 3.2 Gen 1 Type-C.

TR-004U4 bays1U short depthHardware RAID
QNAP TR-004U 4-Bay 1U USB 3.2 Gen 1 RAID Expansion Enclosure

What is the QNAP TR-004U?

It is a 1U short-depth USB RAID enclosure with four SATA drive bays, lockable trays and hardware- or software-controlled RAID. The supplied information lists QTS or QuTS hero, Windows, Ubuntu and Mac support.

4 bays3.5-inch bays with 2.5-inch drive support
5GbpsUSB 3.2 Gen 1 Type-C
1UShort-depth rackmount chassis
100WOpen-frame power supply
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Rackmount storage features

The supplied information combines four-bay USB expansion with hardware RAID, software control and rack deployment.

NAS expansion or DAS

Use the enclosure to expand compatible QNAP NAS storage or connect it directly to a computer.

Hardware RAID operation

The main chip is described as a microprocessor with hardware RAID.

Multiple RAID modes

Supports Single Disk, JBOD, RAID 0, RAID 1, RAID 5, RAID 5 plus spare and RAID 10.

Lockable drive trays

The supplied description lists lockable trays for controlled drive access.

NAS and computer management

Use Storage & Snapshots on a QNAP NAS or QNAP External RAID Manager on a supported computer.

Short-depth rack design

The 291mm-deep 1U chassis supports the optional RAIL-S01 short rail kit.

Connection and drive requirements

Review these supplied limitations before deployment.

  • Direct USB connection: Connect directly to the host USB port without a USB hub or docking station.
  • Cable length: A maximum 1-metre USB cable is recommended.
  • Drive interface: The bays are SATA 3Gb/s slots; SATA 6Gb/s drives are supported with backward compatibility and limited to 3Gb/s performance.
  • RAID group mixing: Only one disk type, HDD or SSD, may be used within a RAID group.
  • Hot-swap limitation: The enclosure is listed as hot-swappable, but drive hot-swap is not supported in Individual mode.
  • Unsupported adapters: The TR-004U does not support QDA-A2AR or QDA-A2MAR.
  • Windows volume limit: Non-Server editions of Windows have a 63TB limit for a single volume; the supplied information recommends Windows Server for larger volumes.

Frequently asked questions

Useful answers based on the supplied information for the QNAP TR-004U.

Does the QNAP TR-004U include hard drives?

No. The supplied specification states that the enclosure is shipped without hard drives.

Which RAID modes does the TR-004U support?

It supports Single Disk, JBOD, RAID 0, RAID 1, RAID 5, RAID 5 plus spare and RAID 10, with hardware- or software-controlled configuration.

Can HDDs and SSDs be mixed in one RAID group?

No. A RAID group must use one disk type only; combining HDDs and SSDs in the same RAID group is not supported.

Can the TR-004U be connected through a USB hub?

No. It should connect directly to the host USB port without a hub or docking station, using a USB cable no longer than 1 metre as recommended.

Is drive hot-swap supported on the TR-004U?

The enclosure is listed as hot-swappable, but the supplied information states that drive hot-swap is not supported in Individual mode.

Can the TR-004U be installed in a rack?

Yes. It is a 1U short-depth rackmount enclosure, and the supplied description lists the optional RAIL-S01 short rail kit for a compatible 19-inch rack.

(TR-004U)

Features and highlights

Key capabilities based on the supplied product information.

Four-bay rackmount expansion

Provides four drive bays in a 1U short-depth chassis.

5Gbps USB Type-C

Uses USB 3.2 Gen 1 Type-C connectivity at the listed 5Gbps rate.

Hardware RAID processor

A microprocessor supports hardware RAID operation.

Broad RAID selection

Includes Single Disk, JBOD, RAID 0, RAID 1, RAID 5, RAID 5 plus spare and RAID 10.

Cross-platform support

The supplied specification lists QTS or QuTS hero, Windows, Ubuntu and Mac.

Optional short rail kit

The supplied description lists the RAIL-S01 for compatible 19-inch rack deployment.

Purchase check: Connect directly to the host, use a cable no longer than 1 metre, use one disk type per RAID group and confirm the optional rail kit and drive compatibility before installation.

Technical specifications

Specifications below are organised from the supplied product information.

Product details
BrandQNAP
ModelTR-004U
Product typeUSB hardware RAID DAS and NAS expansion enclosure
JBOD connection interfaceUSB
Main chipMicroprocessor with hardware RAID
Form factor1U short-depth rackmount
Drive bays4 × 3.5-inch
The system is shipped without hard drives.
Drive support
3.5-inch drivesSATA 3Gb/s slot; supports SATA 6Gb/s hard drives with backward compatibility and performance limited to 3Gb/s
2.5-inch hard drivesSATA 3Gb/s slot; supports SATA 6Gb/s hard drives with backward compatibility and performance limited to 3Gb/s
2.5-inch solid-state drivesSATA 3Gb/s slot; supports SATA 6Gb/s SSDs with backward compatibility and performance limited to 3Gb/s
RAID-group disk typeOnly one disk type, HDD or SSD, may be used in a RAID group
Unsupported adaptersQDA-A2AR and QDA-A2MAR
Hot-swappableYes; drive hot-swap is not supported in Individual mode
Connectivity and controls
USB port1 × USB 3.2 Gen 1 Type-C
USB transfer rate5Gbps, as stated in the supplied description
Recommended USB cable lengthMaximum 1 metre
Connection requirementConnect directly to the host USB port without a hub or docking station
Lockable drive traysListed in the supplied description
Kensington security slotYes
System warningBuzzer
RAID and management
Hardware RAID DASYes
Single DiskYes
JBODYes
RAID 0Yes
RAID 1Yes
RAID 5Yes
RAID 5 plus spareYes
RAID 10Yes
NAS managementStorage & Snapshots Manager, as stated in the supplied description
Computer managementQNAP External RAID Manager, as stated in the supplied description
Physical specifications
Dimensions (H × W × D)44 × 439 × 291mm, excluding ear hook and protruding power-supply components
Net weight4.77kg
Gross weight5.67kg
Optional rail kitRAIL-S01 short rail kit
Power and cooling
Power supplyOpen-frame 100W; input 100–240V, 3.5A, 50–60Hz
HDD sleep power consumption4.79W
Typical operating power18.9W, tested with drives fully populated
Fans2 × 40mm, 12VDC
Operating environment
Operating temperature0–40°C (32–104°F)
Storage temperature-20–70°C (-4–158°F)
Relative humidity5–95% RH non-condensing, wet bulb: 27°C (80.6°F)
System support
QTS / QuTS heroYes
WindowsYes; non-Server Windows editions have a 63TB single-volume limit, and Windows Server is recommended for larger volumes
UbuntuYes
MacYes
Warranty
Standard warranty3; the supplied datasheet does not state the unit
SKU TR-004U
Model # TR-004U
Barcode # 885022017706
Brand QNAP
Shipping Weight 3.1800kg
QNAPManufacturer warranty

QNAP manufacturer warranty

The QNAP TR-004U is supplied with the applicable QNAP manufacturer warranty.

The supplied specification lists a standard warranty value of “3” but does not identify the unit. No duration is stated here. Warranty coverage, eligibility and claim assessment are subject to QNAP terms. Please retain your DeviceDeal tax invoice as proof of purchase.

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QNAP 4-bay Rackmount USB 3.2 Gen 1 RAID Expansion Enclosure

  • SKU: TR-004U

$740.00
Only 3 left!



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