WD Purple Surveillance Hard Drive - 4TB | WD40PURX

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Uncompromising Storage for Surveillance Systems

Western Digital WD Purple™ drives are purpose-built for surveillance environments, engineered to handle the constant heat fluctuations, vibration, and 24/7 workload demands of DVR and NVR systems.

Unlike standard desktop hard drives designed for short bursts of use, WD Purple drives are optimized for continuous operation in high-definition security systems. They deliver reliable, surveillance-class storage for consistent video recording and playback.

Key Benefits & Features

Surveillance-Optimized Design

Built specifically for 24/7 surveillance workloads
Designed to withstand heat and vibration in NVR/DVR environments
Reliable performance for high-definition video recording

AllFrame™ Technology

Reduces frame loss during video recording
Improves overall video playback quality
Enhances ATA streaming performance for security systems

High Workload Rating

Supports up to 180TB/year workload rate
Up to 3× the workload capacity of standard desktop drives
Ideal for mainstream surveillance DVR and NVR systems

Multi-Camera Support

Supports up to 64 HD single-stream cameras (6TB and above models)
Handles multiple streams per camera for AI-enabled surveillance systems
Scalable for future system expansion

Reliability for 24/7 Operation

MTBF up to 1 million hours
Tarnish-resistant components for harsh environments
Supports systems with up to 8+ drive bays

Wide Compatibility

Compatible with a wide range of DVR/NVR systems
Easy integration with industry-standard enclosures and chipsets
Flexible upgrade and expansion options

WDDA™ (Western Digital Device Analytics)

Provides real-time drive health and diagnostics
Helps detect and prevent potential issues early
Enables proactive storage management for system integrators and IT teams

Warranty

3-Year Limited Warranty

Specifications

Feature	Details
Capacity	4TB
Form Factor	3.5-inch
Interface	SATA
Connector	SATA
Transfer Rate	Up to 175 MB/s
Disk Speed	5400 RPM
Recording Technology	CMR
Cache	64MB
Model Number	WD40PURZ
Warranty	3-Year Limited Warranty
Dimensions	147mm × 101.6mm × 26.1mm
Weight	0.68 kg