Western Digital Purple 8TB 3.5'' Surveillance Hard Drive, Transfer Rate up to 110MB/s, Disk Speed (RPM) 5400 RPM, CMR Recording Technology, 64MB Cache Size, SATA | WD85PURZ 3 YEAR WARRANTY

The WD Purple 8TB (WD85PURZ-74B2YY0 / WD85PURZ-85C4WY0) is not your average desktop hard drive. Surveillance systems require a specialized level of endurance that standard drives simply aren't built for. The WD Purple series is rigorously tested for compatibility with a wide range of security systems and is designed to replace standard video-grade drives that may fail under the pressure of continuous, high-definition recording.
 

Performance: AllFrame™ 4K Technology
One of the most critical aspects of security footage is clarity. Missing even a few frames can be the difference between identifying a person of interest or having unusable footage. The WD85PURZ utilizes AllFrame™ technology to improve ATA streaming, which helps to reduce errors, pixilation, and video interruptions that occur when desktop drives are used in surveillance systems. This 8TB model is tuned to support the high-bitrate demands of 4K and Ultra HD video streams.

Reliability: Engineered for Always-On Environments
Surveillance systems operate 24 hours a day, 7 days a week, often in environments with fluctuating temperatures. The WD Purple 8TB features a 180TB/year workload rating—three times that of a standard desktop drive—allowing it to handle the constant write-heavy stream of multiple cameras. Additionally, the drive is built with tarnish-resistant components to ensure longevity in harsh or outdoor-adjacent rack environments.

Compatibility and Integration
Western Digital has collaborated with leading surveillance manufacturers to ensure the WD Purple 8TB is compatible with a vast array of chassis and chipsets. Whether you are using a Hikvision, Dahua, or Synology recorder, the WD85PURZ is designed for seamless integration. It also features Western Digital Device Analytics™ (WDDA), providing the system with a suite of health and diagnostic data to help you stay ahead of potential issues.

Why the WD Purple 8TB Stands Out
Surveillance-Specialized: Built for DVR and NVR systems where 24/7 operation is mandatory.

Expanded Camera Support: Optimized to support up to 64 HD cameras per drive.

Low Power Consumption: IntelliSeek™ technology calculates optimum seek speeds to reduce power, noise, and vibration.

High Capacity: 8TB provides ample space for weeks of high-definition video retention.