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QNAP TR-004-44W-US 4-Bay DAS 12TB WD Red Plus HDD Bundle — main product image
QNAP TR-004-44W-US 4-Bay DAS 12TB WD Red Plus HDD Bundle
QNAP TR-004-44W-US 4-Bay DAS 12TB WD Red Plus HDD Bundle
QNAP TR-004-44W-US 4-Bay DAS 12TB WD Red Plus HDD Bundle
QNAP TR-004-44W-US 4-Bay DAS 12TB WD Red Plus HDD Bundle
QNAP TR-004-44W-US 4-Bay DAS 12TB WD Red Plus HDD Bundle
QNAP TR-004-44W-US 4-Bay DAS 12TB WD Red Plus HDD Bundle
QNAP

QNAP TR-004-44W-US 4-Bay DAS 12TB WD Red Plus HDD Bundle

★★★★★4.4 (44 reviews)
44WUSB 3.2

Hardware RAID 5 across four 4TB WD Red Plus drives delivers 9TB of fault-tolerant, USB-accessible storage in a single DAS enclosure.

$499.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The QNAP TR-004-44W-US bundles the TR-004 four-bay DAS enclosure with four pre-installed 4TB WD Red Plus HDDs, pre-configured in RAID 5. The operational implication of that configuration: 9TB of usable space protected against any single drive failure, delivered over a USB 3.2 Gen 1 connection. The WD Red Plus drives are rated for NAS-class workloads — 24/7 operation, up to 180TB/year workload rating — meaning they're not consumer drives misassigned to continuous duty. The onboard hardware RAID controller is the critical differentiator versus a simple multi-drive enclosure: parity is calculated by the TR-004's dedicated chip, not your host CPU, which matters when the unit is connected to a workstation that's simultaneously under computational load.

This unit fits squarely in two workflows: direct-attached backup storage for a desktop or laptop workstation, and capacity expansion for an existing QNAP NAS via the USB-C port. For a video editor or photographer needing bulk storage redundancy without the complexity of a full NAS deployment, the TR-004 bundle answers the question cleanly — plug it in, it works. For the QNAP NAS user who has outgrown their internal bay capacity, the TR-004 connects directly to the NAS USB port and expands available storage within the QNAP ecosystem. What this is not: a network-accessible device. Without a host machine or NAS acting as the network bridge, the TR-004 serves only the directly connected computer.

Key Features

4 x 4TB WD Red Plus drives pre-installed and pre-configured with RAID 5

USB Type-C Direct Attached Storage (DAS) for Windows, macOS and Linux

Use the TR-004 as external storage for NAS backup

Expand the capacity of your QNAP NAS

Supports 4 x 3.5/2.5-inch SATA 3Gb/s

USB 3.2 Gen 1 Port; Lockable drive Bays

Includes a USB Type-C to Type-A connector cable

Hardware RAID supports RAID 0, 1, 5, JBOD, and individual

Specifications

Model
TR-004-44W-US
Drive Bays
4 x 3.5"/2.5" SATA 3Gb/s
Included Drives
4 x 4TB WD Red Plus HDD
Total Raw Capacity
16TB
Usable Capacity (RAID 5)
~9TB
Interface
USB 3.2 Gen 1 (USB Type-C)
Interface Speed
5Gbps
RAID Modes Supported
RAID 0, 1, 5, JBOD, Individual
Pre-configured RAID
RAID 5
Drive Bay Lock
Yes, lockable bays
Included Cable
USB Type-C to Type-A
OS Compatibility
Windows, macOS, Linux

Pros & Cons

👍 Pros

  • RAID 5 pre-configuration delivers 9TB of fault-tolerant storage out of the box — single-drive failure protection without initial setup time.
  • Hardware RAID controller handles all parity computation independently, imposing no CPU load on the connected host machine.
  • USB 3.2 Gen 1 (5Gbps) interface is sufficient to saturate the sequential throughput ceiling of four WD Red Plus HDDs without becoming a bottleneck.
  • Hardware DIP switch RAID reconfiguration supports five modes (RAID 0, 1, 5, JBOD, individual) without requiring proprietary software.
  • WD Red Plus drives are NAS-rated for 24/7 operation at up to 180TB/year workload, appropriate for continuous backup or always-on DAS duty.

👎 Cons

  • USB 3.2 Gen 1 tops out at 5Gbps — if you upgrade to faster SSDs in the bays later, the interface will become the throughput bottleneck.
  • Hardware RAID DIP switch changes require a full array wipe — there is no non-destructive RAID migration path on this enclosure.
  • No network interface; the TR-004 is DAS-only and cannot be connected to a router or switch for multi-client access without routing through a NAS.
  • RAID 5 rebuild time across four 4TB drives can take 12–24 hours, during which the array is in a degraded, unprotected state.
  • The included USB Type-C to Type-A cable limits native compatibility with hosts that have only USB-C ports unless you supply your own C-to-C cable.

Frequently Asked Questions

Approximately 9TB usable. RAID 5 across four 4TB drives (16TB raw) sacrifices one drive's worth of capacity — 4TB — for parity. You gain single-drive fault tolerance, meaning you can lose any one of the four drives without data loss, then replace it and rebuild the array.
USB 3.2 Gen 1 is rated at 5Gbps (625 MB/s theoretical). In practice, the four WD Red Plus HDDs in RAID 5 will peak around 400–500 MB/s combined sequential read, which sits comfortably within that USB ceiling. The mechanical drives are the throughput constraint here, not the USB interface.
Yes, the RAID mode is set via a hardware DIP switch on the enclosure — no software required. You can switch between RAID 0, 1, 5, JBOD, and individual disk modes. Note that changing the RAID mode will destroy existing data on the array; reconfiguration requires reinitializing the drives.
Yes. The TR-004 presents as a standard USB storage device to any OS — Windows, macOS, and Linux — with no driver or QNAP software required. QNAP software is only necessary if you're using the TR-004 as a capacity expansion for a QNAP NAS over USB.
The drive bays include physical locks for transport security. Hot-swap support depends on the RAID mode in use — the hardware RAID controller in the TR-004 does support drive replacement for RAID rebuild, but verify your specific RAID mode's hot-swap behavior in QNAP's documentation before pulling a drive under load.

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