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Silver 3.5-inch bare hard drive with circuit board visible

Western Digital

Western Digital WD4003FFBX 4TB 7200 RPM 256MB SATA 3.5" internal hard drive

SKU CH-AEHG-TQJ93 MPN WD4003FFBX

4 TB desktop hard drive with 7200 RPM, 256 MB cache and SATA 6.0 Gb/s interface for NAS arrays up to 24 bays

  • PackagingBare Drive
  • InterfaceSATA 6.0Gb/s
  • Capacity4TB
  • NAND Flash Memory TypeHard Drives
  • Recording TechnologyCMR
  • RPM7200 RPM
  • Designed for NAS arrays up to 24 bays with CMR recording technology
  • 300 TB per year workload rating supports heavy multi-user storage demands
  • 7200 RPM spindle speed and 256 MB cache deliver 217 MB/s sustained transfer rate
  • NASware 3.0 firmware and 3D Active Balance Plus reduce vibration and improve error recovery
  • 5 inch form factor with SATA 6.0 Gb/s interface fits standard desktop drive bays

4 TB SATA 6.0 Gb/s desktop drive

The WD Red Pro WD4003FFBX is a 4 TB 3.5-inch internal hard drive built for desktop and NAS use. It runs at 7200 RPM with a 256 MB cache and connects through a SATA 6.0 Gb/s interface. The CMR recording technology and bare-drive packaging suit system builders and integrators.

Suited for multi-bay NAS up to 24 bays

This drive is designed for enterprise NAS environments supporting 1 to 24 drive bays and a 300 TB yearly workload rate. NASware 3.0 firmware and 3D Active Balance Plus improve reliability in vibration-heavy chassis. Not suited for portable use, laptop upgrades, or systems that cannot accommodate a 3.5-inch SATA device.

217 MB/s sustained transfer rate

The supplier rates maximum sustained throughput at 217 MB/s, a figure that helps confirm the drive can keep up with RAID rebuilds and streaming workloads. Combined with the 7200 RPM spindle speed and 256 MB cache, this throughput level is the key indicator for RAID and NAS performance planning.

Points forts

  • Designed for NAS arrays up to 24 bays with CMR recording technology
  • 300 TB per year workload rating supports heavy multi-user storage demands
  • 7200 RPM spindle speed and 256 MB cache deliver 217 MB/s sustained transfer rate
  • NASware 3.0 firmware and 3D Active Balance Plus reduce vibration and improve error recovery
  • 5 inch form factor with SATA 6.0 Gb/s interface fits standard desktop drive bays

Caractéristiques

BrandWD
SeriesRed Pro
ModelWD4003FFBX
PackagingBare Drive
InterfaceSATA 6.0Gb/s
Capacity4TB
NAND Flash Memory TypeHard Drives
Recording TechnologyCMR
RPM7200 RPM
Cache256MB
FeaturesAvailable in large capacities with support for 1-24 bays
Enhanced reliability with 3D Active Balance Plus technology and error recovery controls with NASware 3.0 technology
Extended drive testing to ensure each drive is tested for extended reliable operation
Vibration & Shock protection
UsageEnterprise NAS Hard Drives
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.60mm
Length (maximum)147.00mm
Poids d’expédition0.84 kg
Dimensions du colis224 × 160 × 76 mm

Questions sur cet article

Do I need a SATA 6.0Gb/s port and 3.5-inch drive bay to install this WD4003FFBX?

Yes — the drive connects via a SATA 6.0Gb/s interface and fits a standard 3.5-inch bay with maximum dimensions of 147.00mm length, 101.60mm width and 26.10mm height.

Will this 7200 RPM CMR drive work in a NAS alongside slower drives using NASware 3.0?

It is built for 1-24 bay NAS systems with NASware 3.0 technology and 3D Active Balance Plus, so it can operate in mixed-drive environments while maintaining its 300TB/year workload rating.

How do I verify the 217 MB/s transfer rate and 256MB cache are active after setup?

Check the drive’s reported cache size and run a sequential read/write benchmark; sustained speeds near 217 MB/s confirm the SATA 6.0Gb/s link and 7200 RPM CMR performance are functioning.

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