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Silver 3.5-inch internal hard drive with SATA connectors and label showing WD Red Pro 14TB

Western Digital

Western Digital WD142KFGX 14TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive

SKU CH-G6HJ-XZZMJ MPN WD142KFGX

Enterprise-class 14 TB hard drive for 24-bay NAS systems with 7200 RPM speed and 512 MB cache

  • Total capacity14 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Flash memory typeHard Drive
  • Rotational speed7,200 RPM
  • Cache memory512 MB

Capacity 14TB

Show 4 more
  • Designed for 24-bay NAS systems
  • Handles up to 300TB per year workload
  • 7200 RPM with 512MB cache for fast access
  • 3D Active Balance Plus and NASware 3.0 enhance reliability
  • Extended testing ensures dependable 24x7 operation

Enterprise NAS storage for 24-bay systems

The WD Red Pro WD142KFGX is a 14TB 3.5-inch internal hard drive built for commercial and enterprise NAS enclosures that support up to 24 drive bays. It uses a SATA 6.0Gb/s interface, spins at 7200 RPM and provides a 512MB cache to handle multi-user workloads in RAID-optimised arrays.

Sustained workloads up to 300TB per year

Designed for continuous 24x7 operation, the drive is rated for a 300TB annual workload rate and undergoes extended factory testing for reliable long-term service. NASware 3.0 technology tunes drive parameters for NAS workloads while 3D Active Balance Plus and error recovery controls maintain data integrity during heavy, sustained I/O.

Thermals and power in normal use

The 3.5-inch form factor measures 26.10mm high, 101.60mm wide and 147.00mm long, fitting standard drive bays in multi-bay chassis. Rotation vibration sensors detect and compensate for vibration from neighbouring drives, helping to keep operating temperature and acoustic output stable under typical NAS loads.

How it compares

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

Price $463.99
Pricier than about 90% of the 4,938 comparable items (median $107.99).
Total capacity 14 TB
Higher than about 91% of the 2,372 comparable items (median 2 TB).
Price per TB $33.14 per TB
Cheaper than about 79% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameWD
Product lineRed Pro
Model nameWD142KFGX
Total capacity14 TB
Recommended useEnterprise NAS Hard Drives
Performance
Rotational speed7,200 RPM
Storage
Flash memory typeHard Drive
Cache memory512 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 weight0.79 kg
Package size226 × 157 × 79 mm

Other versions of this model

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Questions about this item

How much power and heat does the 14TB 7200 RPM drive produce during 24x7 operation?

The WD Red Pro 14TB drive is engineered for continuous 24x7 operation in multi-bay NAS enclosures. It supports a 300TB per year workload rate and uses 3D Active Balance Plus technology to minimise vibration and maintain thermal stability across 1 to 24 drive bays.

What host interface and bay count does the SATA 6.0Gb/s drive require to function?

The drive connects via a standard SATA 6.0Gb/s port and fits a 3.5 inch bay. It is validated for NAS systems with 1 to 24 bays and works with RAID-optimised enclosures that provide SATA power and data connections.

Will the 512MB cache SATA drive work reliably in a four-bay NAS alongside older 7200 RPM drives?

Yes. The drive includes Rotation Vibration sensors and NASware 3.0 technology that tune performance for mixed-drive environments. Extended vendor testing ensures compatibility with most multi-bay NAS chassis, allowing it to operate alongside existing drives in a RAID array.

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