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Western Digital Purple Pro 18TB SATA 6Gb/s 7200RPM 512MB Cache (512) 3.5-inch Internal Hard Drive - WD181PURP

Western Digital Purple Pro 18TB SATA 6Gb/s 7200RPM 512MB Cache (512) 3.5-inch Internal Hard Drive - WD181PURP

Part Number: WD181PURP
Manufacturer: Western Digital

Condition: New

Weight: 3.0 lbs

AvailabilityIn stock

Regular price $895.00
Regular price Sale price $895.00
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Western Digital Purple Pro 18TB SATA 6Gb/s 7200RPM 3.5-inch Surveillance HDD — WD181PURP

The Western Digital WD181PURP is the Purple Pro 18TB, a high-capacity SATA 6Gb/s surveillance hard drive with 7200RPM spindle speed and 512MB cache. Designed specifically for AI-enabled surveillance systems and high-channel-count NVR/DVR deployments, it delivers reliable, high-throughput storage for demanding 24/7 video recording workloads with support for up to 64 AI cameras.

Key Features

  • 18TB high-capacity surveillance-optimized SATA hard drive
  • 7200RPM spindle speed for high-throughput video recording
  • 512MB cache for improved sequential write performance
  • Supports up to 64 AI cameras and high-channel-count NVR/DVR systems
  • AllFrame AI technology for reduced frame loss and AI analytics support
  • Rated for 24/7 continuous operation — 360TB/year workload
  • 3-year limited warranty

Product Specifications

  • Part Number: WD181PURP
  • Manufacturer: Western Digital
  • OEM Status: Retail
  • Model: WD Purple Pro
  • Capacity: 18TB
  • Interface: SATA 6Gb/s
  • Form Factor: 3.5-inch
  • Spindle Speed: 7200RPM
  • Cache: 512MB
  • Sector Format: 512

Storage Specifications

  • Capacity: 18TB
  • Interface: SATA 6Gb/s
  • Form Factor: 3.5-inch
  • Sector Size: 512

Performance Specifications

  • Spindle Speed: 7200RPM
  • Cache: 512MB
  • Max Sustained Transfer Rate: Up to 272 MB/s
  • Annual Workload Rating: 360TB/year
  • MTBF: 1 million hours
  • Warranty: 3-year limited

Use Cases

  • High-channel-count NVR/DVR surveillance storage (up to 64 AI cameras)
  • AI-enabled video analytics storage requiring high-throughput SATA drives
  • 24/7 continuous video recording for enterprise and commercial surveillance
  • High-capacity surveillance NAS storage

Compatibility

  • SATA 6Gb/s NVR, DVR, and surveillance NAS systems
  • AI-enabled surveillance platforms supporting AllFrame AI
  • SATA 6Gb/s backplanes and controllers (backward compatible with SATA 3Gb/s)

Frequently Asked Questions

What is the difference between WD Purple and WD Purple Pro?
WD Purple Pro supports up to 64 AI cameras and includes AllFrame AI technology for AI analytics workloads. Standard WD Purple supports up to 32 cameras and is optimized for traditional video recording without AI analytics.
Is this suitable for NAS use outside of surveillance?
The WD Purple Pro is optimized for surveillance workloads. For general-purpose NAS, WD Red or WD Gold drives are better suited — the Purple Pro's firmware is tuned for sequential video write patterns.

The Western Digital WD181PURP Purple Pro 18TB delivers 7200RPM SATA surveillance storage with 512MB cache and AllFrame AI — a high-capacity, AI-ready surveillance HDD for 64-camera NVR/DVR and enterprise video analytics deployments.

Frequently Asked Questions

Why do I see an incorrect image for this item?

Product images are meant for illustrative purposes alone, and you may not always see the original image.

What do you mean by term Refurbished?

Refurbished means a used computer part or device that has been cleaned, checked, and repaired to make sure it works properly again. Unlike regular second-hand items, refurbished products go through testing and fixing so they can perform like new.

How many days does it take to ship goods to customers?

All orders are processed within 1-2 business days. Orders placed on weekends or public holidays will be processed on the next business day. For more info visit shipping policy.

What is your return policy?

Our Return Policy comprises a 30-day warranty for Refurbished products. There will be a restocking fee applied when you return non-defective returns. For further details, kindly take a look at our Return Policy page.

Do you deliver my ordered items in their original retail box?

For Brand New items, you will receive them in their original retail box. For Refurbished items, you will receive them in a Brown Box or Bulk Packaging.

Do your printers come with ink cartridges?

Refurbished printers do not come with ink cartridges or toners.