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Silver 3.5-inch bare internal hard drive with exposed circuit board

Western Digital

Western Digital WD141PURP 14TB 7200 RPM 512MB SATA 6.0Gb/s 3.5" internal hard drive

SKU CH-MFEQ-WGAEB MPN WD141PURP

14 TB surveillance drive with 7200 RPM, 512 MB cache and SATA 6.0 Gb/s for AI video recorders

  • Total capacity14 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Flash memory typeHard Drive
  • Rotational speed7,200 RPM
  • Engineered for 24/7 AI video surveillance with 550 TB/yr workload rating
  • AllFrame AI technology reduces frame loss for smoother playback
  • Supports up to 64 single-stream HD cameras plus multi-stream smart cameras
  • 5 million hours MTBF ensures reliability in always-on environments
  • 14 TB capacity with 512 MB cache and 7200 RPM for high-performance recording

Purpose-built surveillance storage

The WD Purple Pro WD141PURP is a 14TB 3.5-inch internal hard drive engineered for advanced AI-enabled video recorders, analytics appliances and deep-learning servers. It targets installers and system integrators who need reliable, always-on storage for multi-camera smart-video deployments.

Capacity and headroom

The drive offers 14TB of capacity with a 512MB cache and a 550TB-per-year workload rating, supporting up to 64 single-stream HD cameras or multiple smart-camera streams in RAID or JBOD arrays. Workloads exceeding the annualised 550TB threshold or camera counts beyond 64 streams will push the drive outside its rated operating envelope.

Thermals, noise and power draw

Designed for 24/7 operation in multi-bay enclosures, the drive uses tarnish-resistant components rated for harsh environments and an MTBF of up to 2.5 million hours. The SATA 6.0Gb/s interface and 7200 RPM spindle deliver consistent throughput while the mechanical design manages heat and acoustics within typical surveillance chassis constraints.

How it compares

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

Price $298.99
Pricier than about 82% 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 $21.36 per TB
Cheaper than about 92% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameWD
Product linePurple Pro
Model nameWD141PURP
Total capacity14 TB
Recommended useFor Video Surveillance
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 weight0.81 kg
Package size224 × 152 × 74 mm

Questions about this item

Will the 7200 RPM 14TB Purple Pro drive work in a 3.5" bay built for older 6Gb/s SATA surveillance recorders?

Yes, the 3.5" form factor and SATA 6.0Gb/s interface fit standard bays and connect to existing SATA controllers in recorders or servers.

How can I verify the 512MB cache and AllFrame AI streaming are active after installation?

The drive reports its 512MB cache in SMART data and the recorder's health monitor will show reduced frame loss when AllFrame AI is functioning.

The bare-drive packaging means no cables — what must I source separately to install it in a multi-bay enclosure?

You need a SATA data cable and a SATA power cable for each drive; mounting screws are usually supplied with the enclosure.

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