Full Specifications
Capacity
4 TB
Interface
SATA
Form Factor
3.5 Inch
Disk Speed (RPM)
5400rpm
Compatibility
WD Purple™ surveillance storage is built to handle up to 64 cameras per drive and is designed for 24/7, always on, high-definition surveillance security systems with more than eight bays2.
Dimensions (L x W x H)
5.79" x 4" x 1.03"
Product Highlights
• Capacity up to 18TB
• Engineered specifically for surveillance security
systems.
• Tuned for write-intensive, low bit-rate, high
stream-count workloads typical to most
surveillance applications.
• 8TB and above have additional enhancements
and higher workload rate for AI-enabled
recorders, systems and solutions
• Supports up to 180 TB/yr workload rate (Up to
360 TB/yr workload rate on 8TB, 10TB, 12TB, 14TB
and 18TB drives).
• Support for more than eight bays.
• Tarnish-resistant components.
• 3-years limited Warranty
WD Purple™ drives are engineered specifically for surveillance to help withstand the
elevated heat fluctuations and equipment vibrations within NVR environments. An
average desktop drive is built to run for only short intervals, not the harsh 24/7 alwayson environment of a high-definition surveillance system. With WD Purple, you get
reliable, surveillance-class storage that’s tested for compatibility in a wide range of
security systems. Exclusive AllFrame™ technology helps reduce frame loss and improve
overall video playback. WD Purple 8TB⁴ and higher drives have additional performance
headroom to support a new generation of AI-enabled NVRs, video analytics appliances,
and deep-learning servers.
Industry-leading storage. Surveillance you can trust.
Western Digital is a worldwide leader in the hard drive industry. With WD Purple
surveillance storage, you have a drive engineered for high temperature, always-on
surveillance systems so you can rely on quality video playback when you need it most.
Whether you’re protecting loved ones or monitoring your business, WD Purple offers
performance you can trust.
Western Digital’s Exclusive AllFrame Technology
All WD Purple™ drives are equipped with AllFrame technology, which improves ATA
streaming to help reduce frame loss, improve overall video playback, and increase
the number of hard drive bays supported within an NVR. WD Purple capacities up to
6TB⁴ feature AllFrame 4K technology enabling high-quality recording in a multitude of
security systems. WD Purple 8TB, 10TB, 12TB, 14TB, and 18TB capacities feature AllFrame
AI technology that enables not only recording multiple streams per camera but also
supports an additional 32 streams for Deep Learning analytics within the system.
Enhanced Workload Ratings
WD Purple drives with AllFrame 4k technology feature a workload rating of up to 180TB/
year - up to three times that of desktop drives - to handle the unique demands of
modern video surveillance DVR and NVR systems. WD Purple drives with AllFrame AI
technology feature a workload rating up to 360TB/year to support the growing use of
deep learning analytics.
Multiple Cameras, Multiple Streams
Modern recorders now support multiple video streams per camera. WD Purple™ 8TB
and higher capacity drives are optimized to support up to 64 HD single-stream cameras13,
and can also support the latest smart cameras that transmit multiple streams. With so
many options, you have the flexibility to upgrade or expand your security system in the
future.
Designed for Today’s and Tomorrow’s Surveillance Solutions
With an MTBF of up to 1.5 million hours¹, WD Purple drives are engineered for mainstream
surveillance DVRs and NVRs that operate 24/7. With tarnish-resistant components¹ and
support for more than eight bays², WD Purple drives deliver reliable operation in large
scale surveillance systems even in harsh environments.
Field-proven High Capacity
Now on its 6th generation, field-proven HelioSeal™ technology delivers trusted highcapacity WD Purple™ storage (10TB, 12TB, 14TB, and 18TB⁴) for the massive storage needs
of 4K surveillance video and deep learning analytics.
Wide Compatibility. Seamless Integration.
WD Purple™ hard drives are built with compatibility in mind, so you can quickly and
seamlessly add capacity to your surveillance system. With a wide range of industryleading enclosures and chipsets supported, you’re sure to find the DVR or NVR
configuration that’s right for you.
Proactive storage management with WDDA
Western Digital® Device Analytics™ (WDDA) provides a wealth of storage device
parametric operational and diagnostic data to the system; algorithms interpret the data
and direct the system to alert system administrators of specific recommended actions to
address potential issues. WDDA is intended to empower OEMs, system integrators, and
IT professionals to better monitor and proactively manage supported storage devices to
maintain optimal operation.
Three Year Limited Warranty
As an industry-leading hard drive manufacturer, WD stands behind their surveillance
storage solutions with a 3-year limited warranty included with every WD Purple drive.
Advance Information*
Introduction
The 4TB Western Digital Purple 3.5 WD40PURZ Surveillance Hard Drive is a cutting-edge storage solution meticulously designed for high-definition surveillance security systems. Offering an array of technological advancements and industry-specific features, this hard drive provides a stable and reliable storage medium for modern DVRs and NVRs, ensuring uninterrupted, high-quality video recording and playback, even in the most demanding environments.
Key Features
- Capacity: 4TB, providing ample space to store extensive amounts of high-definition video data.
- Interface: Employs SATA for optimal connectivity and compatibility across various surveillance systems.
- Form Factor: 3.5 inches, making it a standard fit for most modern security storage configurations.
- Disk Speed: Operates at 5400 RPM, striking a balance between power efficiency and data throughput.
- Compatibility: Supports up to 64 cameras per drive and is engineered to thrive in systems with more than eight bays.
- Dimensions: Comes in at 5.79" x 4" x 1.03", fitting seamlessly into a myriad of racks and enclosures.
- Warranty: Backed by a 3-year limited warranty offering peace of mind and guaranteed reliability.
Engineered for Surveillance
WD Purple drives, including the 4TB model, are meticulously designed to withstand the unique challenges posed by surveillance environments. The drive is optimized to deliver consistent performance in the face of:
- Elevated Temperatures: Ensuring optimal functioning whether in confined spaces or high-temperature settings typical of dense surveillance setups.
- Equipment Vibrations: Featuring vibration resistance that ensures consistent performance amidst the operational vibrations of NVR systems.
Superior Technology for Uninterrupted Performance
Western Digital’s Exclusive AllFrame™ Technology
WD Purple drives harness the power of AllFrame™ technology to elevate the streaming quality and reliability of stored video footage. The AllFrame technology optimizes the ATA streaming mechanism to:
- Reduce Frame Loss: Ensuring minimal interruptions and high fidelity in recorded video streams.
- Improve Video Playback: Guaranteeing smooth and uninterrupted playback of recorded footage, crucial for effective surveillance monitoring.
- Increase Drive Bays Support: Allowing for the deployment of more storage drives in extensive surveillance setups without compromising on performance.
Enhanced Workload Ratings
Recognizing the heavy data writing demands of surveillance systems, WD Purple drives deliver unparalleled workload ratings. The 4TB model supports up to 180 TB/year workload, three times that of standard desktop drives, making it ideal for:
- Modern Video Surveillance Systems: Handling the high write-intensity and round-the-clock recording needs of DVR (Digital Video Recorder) and NVR (Network Video Recorder) systems.
- Continuous Operation: Ensuring 24/7 operation without wear and tear, perfect for security environments where reliability is paramount.
Advanced Multi-Stream Support
Modern surveillance recorders often support multiple video streams per camera. The WD Purple 4TB model is engineered to handle multiple high-definition streams simultaneously, ensuring:
- Support for Up to 64 HD Single-Stream Cameras: Flexibility to scale up security systems as needed.
- Support for Smart Cameras: Accommodating the latest smart cameras that transmit multiple streams, enhancing the monitoring and analytic capabilities of surveillance infrastructures.
Durability and Reliability
The WD40PURZ model boasts several engineering enhancements that contribute to its durability and reliability:
- Tarnish-Resistant Components: Protecting the drive from environmental degradation, ensuring long-term reliability.
- MTBF of Up to 1.5 Million Hours: Demonstrating robust endurance for constant operation in demanding scenarios.
- Designed for 24/7 Operation: Purpose-built to handle non-stop usage, ensuring no data loss in critical surveillance applications.
Seamless Integration and Compatibility
One of the standout features of the WD Purple 4TB drive is its wide compatibility and ease of integration, including:
- Broad Enclosure and Chipset Support: Ensuring that the drive seamlessly integrates into a wide range of industrial-standard DVRs and NVRs.
- Quick and Easy Capacity Addition: Facilitating rapid scaling of surveillance storage without complex installation or compatibility issues.
Proactive Storage Management with WDDA
The 4TB Western Digital Purple comes equipped with Western Digital® Device Analytics™ (WDDA), enhancing device manageability and operational efficiency:
- Automated Data Analysis and Diagnostics: Providing insightful data on device operation and health, which helps in identifying and addressing potential issues proactively.
- System Notifications for Maintenance: Empowering OEMs, system integrators, and IT professionals with actionable intelligence to maintain optimal storage device performance.
Conclusion
The 4TB Western Digital Purple 3.5 WD40PURZ Surveillance Hard Drive is the definitive storage solution for modern surveillance systems, offering a blend
