We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver 3.5-inch internal hard drive with SATA connectors and circuit board visible

Western Digital

Western Digital WD122PURP 12TB 7200 RPM 512MB SATA 3.5" internal hard drive

SKU CH-0X00-76XDJ MPN WD122PURP

12 TB 3.5" SATA hard drive built for 24/7 AI video surveillance with 7200 RPM, 512 MB cache and a 550 TB yearly workload rating

  • InterfaceSATA 6.0Gb/s
  • Capacity12TB
  • NAND Flash Memory TypeHard Drive
  • Recording TechnologyCMR
  • RPM7200 RPM
  • Cache512MB

Options 12TB

  • Built for 24/7 surveillance with 2.5 million hours MTBF
  • Handles 64 HD cameras plus AI streams with AllFrame AI technology
  • 550 TB yearly workload rating sustains heavy recording
  • 12 TB CMR storage at 7200 RPM with 512 MB cache
  • Tarnish-resistant design fits standard 3.5 inch bays

WD Purple Pro 12TB surveillance drive

This 12TB 3.5-inch hard drive uses a SATA 6.0Gb/s interface and spins at 7200 RPM with a 512MB cache. It employs CMR recording technology and OptiNAND for advanced AI-enabled recorders, video analytics appliances and deep-learning servers. The drive is engineered for always-on operation in smart video solutions.

Suits installers building 24/7 video systems

The drive supports up to 64 single-stream HD cameras and handles multiple streams from smart cameras. A workload rating of 550TB per year and an MTBF of 2.5 million hours match continuous recording demands. AllFrame AI technology helps reduce frame loss during playback. Buyers needing a desktop drive for general-purpose storage or a different interface should look elsewhere.

550TB annual workload rating decides fit

This single figure shows whether the drive can sustain the write intensity of a multi-camera surveillance deployment. If the planned system writes less data, a lower-rated drive may suffice; if it writes more, the drive falls short. The rating is the decisive specification for this product class.

Highlights

  • Built for 24/7 surveillance with 2.5 million hours MTBF
  • Handles 64 HD cameras plus AI streams with AllFrame AI technology
  • 550 TB yearly workload rating sustains heavy recording
  • 12 TB CMR storage at 7200 RPM with 512 MB cache
  • Tarnish-resistant design fits standard 3.5 inch bays

Specifications

BrandWD
SeriesPurple Pro
ModelWD122PURP
InterfaceSATA 6.0Gb/s
Capacity12TB
NAND Flash Memory TypeHard Drive
Recording TechnologyCMR
RPM7200 RPM
Cache512MB
FeaturesEngineered for advanced AI-enabled recorders, video analytics appliances, deep-learning servers, and cloud-based storage, including RAID and JBOD
Designed with tarnish-resistant components for harsh environments and with additional robustness for multi-bay enclosures
Supports up to 550TB/yr workload rate
UsageFor Video Surveillance
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.60mm
Length (maximum)147.00mm
Shipping weight0.73 kg
Package size152 × 102 × 25 mm

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Does the SATA 6.0Gb/s interface limit the 12TB WD Purple Pro to 6.0Gb/s in practice?

The SATA 6.0Gb/s interface caps the maximum theoretical transfer rate at 6.0Gb/s; real-world throughput will be lower and depends on the host controller and cable quality.

What are the exact dimensions I need to clear for this 3.5-inch drive?

The drive measures 147.00mm long, 101.60mm wide and 26.10mm high, so ensure your bay or cage provides at least that much clearance.

How do I install the WD122PURP and what step is commonly missed?

Mount the drive using four 3.5-inch screw holes, connect the SATA data and power cables, then enable AHCI or RAID mode in the system BIOS so the 7200 RPM drive is recognised correctly.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.