WD Purple WD85PURZ 8TB – 3.5" Surveillance Hard Drive with SATA 6Gb/s, CMR, 256MB Cache, AllFrame Technology & 180TB/year Workload
Overview:
• The WD Purple WD85PURZ 8TB is a 3.5-inch surveillance hard drive designed for 24/7 DVR and NVR video recording systems.
• It is engineered for mainstream surveillance systems, helping handle continuous recording, multiple cameras, heat fluctuations, and recorder vibration.
• The drive uses WD AllFrame technology to help reduce dropped video frames and improve recording and playback reliability.
• It supports up to 64 HD cameras, up to 16 drive bays, and provides an annual workload rating of 180TB/year.
• The 8TB model includes 256MB cache, RV sensors, tarnish-resistant components, and a 3-year limited warranty.
Key Features:
• 8TB surveillance hard drive
• Designed for DVR and NVR systems
• 24/7 surveillance recording support
• WD AllFrame technology
• SATA 6Gb/s interface
• CMR recording technology
• 256MB cache
• Supports up to 64 HD cameras
• Supports up to 16 drive bays
• 180TB/year workload rating
• RV sensors
• Tarnish-resistant components
• MTBF up to 1,000,000 hours
• 3-year limited warranty
Technical Specifications:
• Brand: Western Digital
• Series: WD Purple
• Model Number: WD85PURZ
• Capacity: 8TB
• Form Factor: 3.5-Inch
• Interface: SATA 6Gb/s
• Recording Technology: CMR
• Advanced Format: Yes
• RoHS Compliant: Yes
• Firmware Feature: AllFrame
• Cameras Supported: Up to 64 HD Cameras
• Maximum Drive Bays Supported: 16
• Tarnish Resistant Components: Yes
• RV Sensors: Yes
• Interface Transfer Rate: 6Gb/s
• Sustained Transfer Rate: 215MB/s
• Cache: 256MB
• Load / Unload Cycles: 300,000
• Annualized Workload Rating: 180TB/year
• Non-Recoverable Read Errors: <1 in 10^14
• MTBF: 1,000,000 Hours
• Limited Warranty: 3 Years
• Read / Write Power: 5.3W
• Idle Power: 4.7W
• Standby and Sleep Power: 0.4W
• Operating Temperature: 0°C to 65°C
• Non-Operating Temperature: -40°C to 70°C
• Operating Shock Read/Write: 70G
• Operating Shock Read: 70G
• Non-Operating Shock: 250G
• Idle Acoustics: 24dBA
• Seek Acoustics: 28dBA
• Height: 26.1mm
• Length: 147mm
• Width: 101.6mm
• Weight: 0.72kg
Applications:
• DVR surveillance recording
• NVR surveillance recording
• CCTV storage expansion
• Multi-camera security systems
• 24/7 video recording environments
• Medium and large surveillance systems
• Systems with multiple drive bays
• High-capacity video storage projects
Connect Gates Recommendation:
• Connect Gates recommends the WD Purple 8TB for medium to large CCTV projects that require longer recording retention and reliable 24/7 operation.
• It is suitable for NVR systems, multi-camera installations, and projects that need high storage capacity with RV sensors and 16-bay support.
• Storage retention should be calculated based on the number of cameras, resolution, frame rate, compression, and recording mode.