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  2. Hard Drives
  3. SATA
  4. 3.5"
  5. 22TB
  6. 7.2K RPM
  7. WD221PURP
Western Digital

Western Digital WD221PURP Purple Pro 22TB 7200 RPM SATA III

MPN: WD221PURP·By: Western Digital

Part #:WD221PURPNewIn stock

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$1,190.00$54.09 per TB
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Western Digital WD221PURP Purple Pro 22TB 7200 RPM SATA III-
$1,190.00

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Product overview

The WD Purple Pro 22TB (WD221PURP) is an enterprise-class surveillance hard drive engineered for advanced AI-enabled recorders, video analytics servers, and deep learning solutions. Featuring 7200 RPM spindle speed, 512MB cache, and SATA 6Gb/s interface, this drive delivers sustained data transfer rates up to 265 MB/s. With OptiNAND technology and Conventional Magnetic Recording (CMR), it supports up to 550TB annual workload capacity and handles 64 single-stream HD cameras or multiple AI streams simultaneously. AllFrame AI technology reduces frame loss and improves video playback quality. The drive features tarnish-resistant components for harsh environments, 600,000 load/unload cycles, and 2.5 million hour MTBF rating. Designed for 24/7 operation in multi-bay RAID and JBOD configurations, it includes a 5-year limited warranty and full multi-bay enclosure support for large-scale surveillance deployments.

  • 550TB/year workload rating for continuous surveillance
  • Supports 64 HD cameras and 32 AI analytics streams
  • 2.5 million hour MTBF with 24/7 operation capability
  • 265 MB/s sustained transfer rate for multi-stream processing
  • AllFrame AI technology reduces frame loss in video playback
  • Tarnish-resistant design for harsh environment deployments
  • Expedited and overnight shipping options are available at checkout, priced by destination and service.
  • Purchase orders accepted from qualified institutions.
  • Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #WD221PURP
BrandWestern Digital
ConditionNew
ModelWD221PURP
TechnologyOptiNAND; Conventional Magnetic Recording (CMR)
Product LineWD Purple Pro
Product TypeSurveillance Hard Drive; Smart Video HDD
Spindle Speed7200 RPM
Workload Rating550 TB/year; Enterprise-class workload
Average Power RequirementsDetails in product documentation

Physical Characteristics

Form Factor3.5-inch Internal

Interface/Ports

ConnectorSerial ATA 7-pin
Interface TypeSATA 6Gb/s; SATA III

Drive Performance

Data Transfer RateUp to 265 MB/s sustained

Weight & Dimensions

Weight1.50 lbs; 23.63 oz; 1.48 lbs
Cache Size512 MB
Dimensions1 in x 4 in x 5.8 in (H x W x D)

Compliance Standards

Compliance CertificationsROHS Directive 2011/65/EU; ROHS Directive 2015/863/EU

Compatible systems

Optimized for surveillance systems and video analytics servers; broad server compatibility via SATA interface

  • Generic Video Analytics Servers
    Form factor: 3.5-inch bay

    AI-enabled recorders, deep learning servers, smart video appliances

Best for

  • AI Video Analytics

    Supports up to 32 AI streams for deep learning analytics with AllFrame AI technology. Ideal for video analytics appliances requiring frame-accurate processing and reduced frame loss in continuous 24/7 operations.

  • Large-Scale Surveillance

    Handles up to 64 single-stream HD cameras with 550TB/year workload rating. Engineered for multi-bay enclosures with tarnish-resistant components for harsh environment deployments.

  • Deep Learning Servers

    OptiNAND technology and 265 MB/s sustained transfer rate support heavy data capture and analysis. 2.5 million hour MTBF ensures reliability for continuous deep learning model training and inference.

  • Cloud-Based Storage

    RAID and JBOD configuration support with enterprise-class reliability. 512MB cache and SATA 6Gb/s interface optimize performance for distributed video storage systems.

  • Smart Video Recorders

    AllFrame AI technology improves ATA streaming for multiple camera streams per device. 7200 RPM performance with 600,000 load/unload cycles supports advanced always-on recording systems.

Frequently asked questions

How many cameras can the WD Purple Pro 22TB support?

The WD Purple Pro 22TB supports up to 64 single-stream HD cameras. It also enables recording of multiple streams per camera and supports up to 32 AI streams for deep learning analytics. This makes it suitable for both traditional surveillance and advanced AI-enabled systems requiring simultaneous video intelligence processing.

What is the annual workload rating and why does it matter?

The drive has a 550TB/year workload rating, meaning it can handle continuous heavy data capture and analysis. This enterprise-class specification ensures the drive won't degrade or fail prematurely under the demanding conditions of 24/7 surveillance systems with multiple simultaneous camera streams and analytics processing.

Does this drive support RAID configurations?

Yes, the WD Purple Pro 22TB is engineered for both RAID and JBOD configurations. It features tarnish-resistant components and full multi-bay enclosure support, making it ideal for large-scale surveillance systems requiring redundancy and fault tolerance in multi-bay storage arrays.

What is AllFrame AI technology and how does it improve performance?

AllFrame AI technology optimizes ATA streaming to reduce frame loss and improve video playback quality. It enables the drive to support up to 32 AI streams for deep learning analytics simultaneously, allowing real-time video intelligence processing without requiring separate external analytics servers.

What is the MTBF rating and what does it indicate?

The drive has a 2.5 million hour MTBF (Mean Time Between Failures) rating, indicating exceptional reliability for 24/7 continuous operation. This enterprise-class specification ensures long-term dependability in surveillance systems, with the drive designed to operate reliably for years without failure in demanding environments.

What data transfer rate does this drive achieve?

The WD Purple Pro 22TB delivers sustained data transfer rates up to 265 MB/s. This performance level supports multiple simultaneous video streams and AI analytics processing without bottlenecks, ensuring smooth real-time video recording and intelligent video analysis in advanced surveillance systems.

Is this drive suitable for harsh environments?

Yes, the drive features tarnish-resistant components specifically designed for harsh environments. Combined with its 600,000 load/unload cycles and robust multi-bay enclosure support, it ensures reliable operation in temperature-variable and humidity-prone surveillance installations typical of outdoor or industrial deployments.

Details

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$1,190.00$54.09 per TB
Qty
Western Digital WD221PURP Purple Pro 22TB 7200 RPM SATA III-
$1,190.00
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