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Silver 3.5-inch internal hard drive with SATA connectors

Western Digital

Western Digital Red Pro 16TB 7200 RPM 512MB 3.5in SATA internal hard drive

SKU CH-NA63-HN7TF

16 TB 3.5-inch SATA hard drive built for 24/7 NAS workloads with 7200 RPM and 512 MB cache

  • Total capacity16 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Rotational speed7,200 RPM
  • 16 TB capacity stores massive surveillance archives
  • 7200 RPM spindle delivers sustained write throughput
  • 512 MB cache absorbs bursty camera streams
  • 5-inch form factor fits standard NAS bays
  • SATA 6.0 Gb/s interface connects to existing controllers

Built for 24/7 surveillance workloads

This 16TB hard drive is engineered for continuous video recording in network video recorders. It handles the elevated heat and vibration found in always-on surveillance environments where standard desktop drives are not designed to operate.

SATA 6.0Gb/s interface practical limits

The SATA 6.0Gb/s connection caps sequential throughput at the interface maximum. Mechanical latency at 7200 RPM and the 512MB cache size determine real-world sustained transfer rates during heavy multi-stream write activity.

16TB capacity with 512MB cache headroom

Sixteen terabytes store weeks of high-definition footage from multiple cameras. The large cache absorbs burst write traffic, but sustained 24/7 recording will eventually fill the volume and require archiving or overwrite cycles.

How it compares

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

Price $584.99
Pricier than about 90% of the 4,938 comparable items (median $107.99).
Total capacity 16 TB
Higher than about 92% of the 2,372 comparable items (median 2 TB).
Price per TB $36.56 per TB
Cheaper than about 74% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameWestern Digital
Part numberWD161KFGX
Total capacity16 TB
Performance
Rotational speed7,200 RPM
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)

Questions about this item

Should I pick the 16TB Red Pro or a smaller capacity for my NAS?

The 16TB model delivers the highest raw capacity in the Red Pro line, reducing the number of drives needed to reach a given storage target.

What does the 7200 RPM rating mean for daily NAS workloads?

The 7200 RPM spindle provides higher sustained throughput than slower-spinning drives, helping maintain performance during heavy multi-stream write workloads.

Will the SATA 6.0Gb/s interface limit the 16TB drive in a modern NAS?

The SATA 6.0Gb/s link caps the burst transfer rate at 6 Gb/s; sustained rates are lower and depend on the drive’s internal media speed.

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