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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.

Ciri-ciri utama

  • 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

Spesifikasi

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
Berat penghantaran0.73 kg
Dimensi bungkusan152 × 102 × 25 mm

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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.

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