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Standard 3.5-inch silver internal hard drive with green label

Western Digital

Western Digital WD161KFGX 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive

SKU CH-8FY5-GXZ52 MPN WD161KFGX

A 16 TB CMR drive built for 24-bay NAS systems, running at 7200 RPM with 512 MB cache and a 300 TB yearly workload rating

  • InterfaceSATA 6.0Gb/s
  • Capacity16TB
  • Recording TechnologyCMR
  • RPM7200 RPM
  • Cache512MB
  • Features3D Active Balance Plus Our enhanced dual-plane balance contr

Capacity 16TB

Show 4 more configurations
  • Massive 16TB capacity meets growing data demands
  • 7200 RPM performance handles simultaneous multi-user access
  • 512MB cache accelerates data access and responsiveness
  • CMR recording technology ensures consistent sustained throughput
  • Built for 24/7 NAS operation with 300TB/year workload rating

WD Red Pro 16TB NAS drive

The WD Red Pro WD161KFGX is a 16TB 3.5-inch internal hard drive built for network-attached storage. It spins at 7200 RPM with a 512MB cache and connects through a SATA 6.0Gb/s interface. CMR recording technology and 3D Active Balance Plus are designed for sustained multi-user workloads in always-on systems.

Suited for multi-bay NAS up to 24 bays

This drive targets businesses and advanced home users who need high-capacity, 24/7 storage in enclosures that hold up to 24 drives. It supports workloads up to 300TB per year and includes NASware 3.0 for error recovery. Builders needing a smaller footprint, a different interface, or drives rated for lighter desktop use should consider other options.

Fits standard 3.5-inch bays with SATA power and data

The unit measures 147mm long, 101.6mm wide and 26.1mm high, matching common NAS trays. It requires a SATA data cable and a SATA power connection from the host system. The large 512MB cache helps maintain consistent throughput for simultaneous file transfers, freeing the controller from frequent small-request overhead.

Highlights

  • Massive 16TB capacity meets growing data demands
  • 7200 RPM performance handles simultaneous multi-user access
  • 512MB cache accelerates data access and responsiveness
  • CMR recording technology ensures consistent sustained throughput
  • Built for 24/7 NAS operation with 300TB/year workload rating

Specifications

BrandWD
SeriesRed Pro
ModelWD161KFGX
InterfaceSATA 6.0Gb/s
Capacity16TB
Recording TechnologyCMR
RPM7200 RPM
Cache512MB
Features3D Active Balance Plus
Our enhanced dual-plane balance control technology significantly improves the overall drive performance and reliability. Hard drives that are not properly balanced may cause excessive vibration and noise in a multi-drive system, reduce the hard drive life span, and degrade the performance over time.
Error Recovery Prevention
Built specifically for RAID and NAS environments, WD Red Pro drives come equipped with error recovery controls as part of NASware 3.0 technology to help reduce drive fallout in RAID applications.
Extended Drive Testing
A NAS environment tha
UsageEnterprise NAS Hard Drives
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.60mm
Length (maximum)147.00mm
Shipping weight0.91 kg
Package size196 × 152 × 51 mm

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