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Silver 3.5 inch hard drive with silver label and circuit board visible

Western Digital

Western Digital WD240KFGX Red Pro 24TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" internal hard drive

SKU CH-K6XA-A49SE MPN WD240KFGX

A 24 TB SATA enterprise NAS drive with 7200 RPM, 512 MB cache and CMR technology for 24-bay RAID systems

  • Total capacity24 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Recording methodCMR
  • Rotational speed7,200 RPM
  • Cache memory512 MB

Capacity 24TB (Old Version)

Show 4 more
  • 24 TB capacity stores massive datasets
  • 7200 RPM speed enables rapid data access
  • 512 MB cache accelerates read and write operations
  • CMR recording technology ensures consistent write performance
  • NASware 3.0 and RV sensors optimise reliability in multi-bay NAS

Enterprise NAS drive

The WD Red Pro WD240KFGX is a 24TB 3.5-inch hard drive built for 24x7 operation in multi-bay commercial and enterprise NAS enclosures. It uses conventional magnetic recording and a 7200 RPM spindle to sustain heavy multi-user workloads. ||

SATA 6.0Gb/s interface

The drive connects through a standard SATA 6.0Gb/s port, making it compatible with NAS appliances and servers that use this interface. Systems limited to SATA 3.0Gb/s will operate at the lower link speed. ||

24TB capacity with 300TB yearly workload

The 24TB capacity and 512MB cache comfortably absorb sustained write streams in RAID arrays rated for up to 24 bays. The 300TB per year workload rating marks the boundary beyond which endurance and error-rate targets are no longer guaranteed.

How it compares

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

Price $538.99
Pricier than about 90% of the 4,938 comparable items (median $107.99).
Total capacity 24 TB
Higher than about 96% of the 2,372 comparable items (median 2 TB).
Price per TB $22.46 per TB
Cheaper than about 91% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameWD
Product lineRed Pro
Model nameWD240KFGX
Total capacity24 TB
Recommended useEnterprise NAS Hard Drives
Performance
Rotational speed7,200 RPM
Storage
Recording methodCMR
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 weight0.75 kg
Package size191 × 127 × 64 mm

Other versions of this model

5 more in the same range

Questions about this item

How does the 7200 RPM speed affect real-world throughput in a NAS?

The 7200 RPM spindle speed combined with a 512MB cache helps sustain high sequential transfer rates for large files and improves random I/O response during multi-user access.

What practical limit does the SATA 6.0Gb/s interface place on this 24TB drive?

The SATA 6.0Gb/s link caps the maximum burst transfer rate at 6.0Gb/s, so sustained reads and writes will not exceed the interface bandwidth even though the drive holds 24TB.

Will the 26.10mm height fit a standard 3.5" drive bay or hot-swap tray?

Yes, the 26.10mm height matches the standard 3.5" form factor, so it fits typical NAS bays, server backplanes and desktop cages without adapters.

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