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Western Digital WD Red 5TB 3.5 inch bare drive

Western Digital

Western Digital WD50EFRX 5TB 5400 RPM 64MB SATA 3.5" internal hard drive

SKU CH-BJTZ-SM3AC MPN WD50EFRX

A 5 TB 3.5-inch SATA drive built for 1 to 8-bay NAS systems with 5400 RPM and 64 MB cache

  • Total capacity5 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed5,400 RPM
  • Cache memory64 MB
  • Designed for 1 to 8 bay NAS systems with 24/7 operation
  • NASware 3.0 improves compatibility and supports up to 48 TB total capacity
  • 3D Active Balance Plus reduces vibration for better reliability in multi-drive setups
  • 5 TB capacity with 64 MB cache for large storage needs
  • SATA 6.0 Gb/s interface fits standard 3.5-inch drive bays

WD Red 5TB NAS drive for 1 to 8 bay systems

The WD50EFRX is a 5TB 3.5-inch internal hard drive built for network-attached storage enclosures that run continuously. It targets home and small-office users who need reliable bulk storage across one to eight drive bays.

Upgrade from desktop drives in multi-bay NAS

Desktop-class drives lack the firmware and vibration controls required for 24x7 multi-drive operation. The jump is worth it when you move from a single-drive backup to a redundant array or when an existing NAS shows vibration-related errors.

Verify SATA power, data cables and bay clearance

Confirm your NAS accepts 3.5-inch drives with a 26.1mm height and provides SATA 6.0Gb/s ports. Check that the chassis can supply adequate cooling for continuous operation and that the drive cage fits the 147mm length.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $171.99
Pricier than about 64% of the 4,938 comparable items (median $107.99).
Total capacity 5 TB
Higher than about 73% of the 2,372 comparable items (median 2 TB).
Price per TB $34.40 per TB
Cheaper than about 77% of the 2,365 comparable items (median $62.21 per TB).

New to this? Paying with USDT: TRC-20 or ERC-20 — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameWD
Product lineRed
Model nameWD50EFRX
Total capacity5 TB
Recommended useFor NAS systems
Performance
Rotational speed5,400 RPM
Storage
Cache memory64 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height26.1 mm
Maximum width101.6 mm
Maximum length147 mm
Shipping weight0.72 kg
Package size150 × 102 × 25 mm

Questions about this item

Will the 3.5-inch form factor and 26.1mm height fit my NAS drive bay?

Yes, the drive measures 147.00mm long, 101.6mm wide and 26.1mm high, matching the standard 3.5-inch dimensions used in 1 to 8 bay NAS enclosures.

What is the correct way to install the SATA 6.0Gb/s drive so the NAS recognises all 5TB?

Connect both the SATA data and power cables firmly, then initialise the disk in the NAS operating system before creating any volumes; skipping the initialisation step is the most common reason the full capacity does not appear.

How often should I check the 5400 RPM drive health in a 24x7 NAS?

Run a SMART short test monthly and a long test quarterly; the NASware 3.0 firmware logs vibration and temperature data that the NAS dashboard can alert on before a failure develops.

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