


Relentless storage for surveillance
WD Purple drives are designed to meet the challenges of 24/7 surveillance recording. These drives are specifically designed for video surveillance to withstand the high temperature fluctuations and vibrations in the equipment found in an NVR environment. The average desktop drive is designed to operate only in short bursts and not in the harsh, continuous 24/7 operation environment of a high-definition video surveillance system. With WD Purple drives, you get reliable, surveillance-specific storage that is compatible with a wide variety of security systems. Exclusive AllFrame™ technology helps reduce dropped frames and improve overall video playback.
Industry-leading storage. Surveillance you can trust.
Western Digital has been offering video surveillance storage for over a decade. With WD Purple video surveillance storage, you have drives designed for high-temperature continuous surveillance systems, so you can rely on quality video playback when you need it most.
Western Digital's exclusive AllFrame™ technology
All WD Purple drives are equipped with AllFrame™ technology, which helps reduce video frame drops and improves recording and playback.
Enhanced Workload Ratings
WD Purple drives deliver a workload rating of up to 180TB per year2 ( up to three times the rating of desktop drives) to meet the unique demands of traditional video surveillance DVR and NVR systems.
Multiple Cameras, Multiple Streams
Modern recorders now support multiple video streams per camera. WD Purple drives support up to 64 single-stream HD cameras 5 . With so many options, you have the flexibility to upgrade or expand your security applications in the future.
Designed for Video Surveillance Solutions
With up to 1 million hours of mean time between failures (MTBF) 3 , WD Purple drives are designed for traditional, 24/7 surveillance DVR and NVR systems. With damage-resistant components 7 and support for storage systems, plus over eight bays 4 , WD Purple drives deliver reliable operation even in harsh environments.
Broad 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 variety of industry-leading compatible enclosures and chipsets, you're sure to find the right DVR or NVR configuration for you.
Three-Year Limited Warranty
As an industry-leading hard drive manufacturer, Western Digital backs its surveillance storage solutions with a 3-year limited warranty 6 , which comes with every WD Purple drive.
Specifications |
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8TB | 6TB | 4TB | 3TB | 2TB | 1TB | ||
Model Number | WD85PURZ | WD64PURZ | WD43PURZ | WD33PURZ | WD23PURZ | WD11PURZ | |
Formatted capacity1 | 8TB | 6TB | 4TB | 3TB | 2TB | 1TB | |
Form factor | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch | |
Advanced Format (AF) | Yes | Yes | Yes | Yes | Yes | Yes | |
Recording Technology | CMR | CMR | CMR | CMR | CMR | CMR | |
Interface | SATA 6Gb/s | SATA 6Gb/s | SATA 6Gb/s | SATA 6Gb/s | SATA 6Gb/s | SATA 6Gb/s | |
RoHS compliant2 | Yes | Yes | Yes | Yes | Yes | Yes | |
Product Features |
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Cameras supported³ | Up to 64 HD | Up to 64 HD | Up to 64 HD | Up to 64 HD | Up to 64 HD | Up to 64 | |
Maximum Drive Bays Supported | 16 | 16 | 16 | 16 | 8 | 8 | |
Firmware Feature Name | AllFrame | AllFrame | AllFrame | AllFrame | AllFrame | AllFrame | |
Tarnish resistant components | Yes | Yes | Yes | Yes | No | No | |
RV Sensors | Yes | Yes | Yes | Yes | No | No | |
Performance |
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Interface transfer rate (max)⁴ Buffer to host | 6 Gb/s | 6 Gb/s | 6 Gb/s | 6 Gb/s | 6 Gb/s | 6 Gb/s | |
Host to/from drive (sustained)5 | 215 MB/s | 180MB/s | 180MB/s | 180MB/s | 180MB/s | 180MB/s | |
Cache (MB)¹ | 256 | 256 | 256 | 256 | 64 | 64 | |
Reliability/Data Integrity |
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Load/unload cycles⁶ | 300.000 | 300.000 | 300.000 | 300.000 | 300.000 | 300.000 | |
Annualized workload rating⁷ | 180TB/yr | 180TB/yr | 180TB/yr | 180TB/yr | 180TB/yr | 180TB/yr | |
Non-recoverable read errors per bits read | <1 in 10^14 | <1 in 10^14 | <1 in 10^14 | <1 in 10^14 | <1 in 10^14 | <1 in 10^14 | |
MTBF8 | 1.000.000 | 1.000.000 | 1.000.000 | 1.000.000 | 1.000.000 | 1.000.000 | |
Limited warranty (years)9 | 3 | 3 | 3 | 3 | 3 | 3 | |
Power Management10 |
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Average power requirements (W) Read/Write | 5,3 | 4,7 | 4,7 | 4,6 | 3,8 | 3,8 | |
Idle | 4,7 | 4,3 | 4,3 | 3,7 | 3,2 | 3,2 | |
Standby and Sleep | 0,4 | 0,3 | 0,3 | 0,3 | 0,3 | 0,3 | |
Environmental Specifications |
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Temperature (°C, on the base casting) | |||||||
Operating | 0 to 65 | 0 to 65 | 0 to 65 | 0 to 65 | 0 to 65 | 0 to 65 | |
Non-operating | -40 to 70 | -40 to 70 | -40 to 70 | -40 to 70 | -40 to 70 | -40 to 70 | |
Shock (Gs) Operating (2 ms, read/write) |
70 | 30 | 30 | 30 | 30 | 30 | |
Operating (2 ms, read) | 70 | 65 | 65 | 65 | 65 | 65 | |
Non-operating (2 ms) | 250 | 250 | 250 | 250 | 250 | 250 | |
Acoustics (dBA) Idle | 24 | 23 | 23 | 23 | 21 | 21 | |
Seek (average) | 28 | 27 | 27 | 27 | 26 | 26 | |
Physical Dimensions |
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Height (in./mm, max) | 1.028/26.1 | 1.028/26.1 | 1.028/26.1 | 1.028/26.1 | 1.028/26.1 | 1.028/26.1 | |
Length (in./mm, max) | 5.787/147 | 5.787/147 | 5.787/147 | 5.787/147 | 5.787/147 | 5.787/147 | |
Width (in./mm, ± .01 in.) | 4/101.6 | 4/101.6 | 4/101.6 | 4/101.6 | 4/101.6 | 4/101.6 | |
Weight (lb/kg, ± 3%) | 1.58/0.72 | 1.26/0.57 | 1.26/0.57 | 1.26/0.57 | 0.99/0.45 | 0.99/0.45 |