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HDD
Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD – SATA 6 Gb/s, 256 MB Cache, 3.5″ – WD43PURZ
WD Purple® drives are designed to meet the challenges of 24×7 video surveillance recording. These 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 always- on environment of a high-definition surveillance system. With WD Purple drives, you get reliable, surveillance-class storage that’s tested for compatibility in a wide range of security systems. Exclusive WD AllFrame™ technology helps reduce frame loss and improve overall video playback.
Specifications
| 4TB | ||||||||||||
| Model Number | WD43PURZ | |||||||||||
| Formatted capacity1 | 4TB | |||||||||||
| Form factor | 3.5-inch | |||||||||||
| Advanced Format (AF) | Yes | |||||||||||
| Recording Technology | CMR | |||||||||||
| Interface | SATA 6Gb/s | |||||||||||
| RoHS compliant2 | Yes | |||||||||||
| Product Features | ||||||||||||
| Cameras supported³ | Up to 64 | |||||||||||
| Maximum Drive Bays Supported | 8 | |||||||||||
| Firmware Feature Name | AllFrame | |||||||||||
| Tarnish resistant components | No | |||||||||||
| RV Sensors | No | |||||||||||
| Performance | ||||||||||||
| Interface transfer rate (max)⁴ Buffer to host
Host to/from drive (sustained)5 |
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6 Gb/s 180MB/s |
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| Cache (MB)¹ | 256 | |||||||||||
| Reliability/Data Integrity | ||||||||||||
| Load/unload cycles⁶ | 300,000 | |||||||||||
| Annualized workload rating⁷ | 180TB/yr | |||||||||||
| Non-recoverable read errors per bits read | <1 in 10^14 | |||||||||||
| MTBF8 | 1,000,000 | |||||||||||
| Power Management10 | ||||||||||||
| Average power requirements (W) Read/Write
Idle Standby and Sleep |
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4.7 4.3 0.3 |
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| Environmental Specifications | ||||||||||||
| Temperature (°C, on the base casting) | ||||||||||||
| Operating Non-operating | 0 to 65
-40 to 70 |
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| Shock (Gs)
Operating (2 ms, read/write) Operating (2 ms, read) Non-operating (2 ms) |
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30 65 250 |
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| Acoustics (dBA) Idle
Seek (average) |
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23 27 |
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| Physical Dimensions | ||||||||||||
| Height (in./mm, max) | 1.028/26.1 | |||||||||||
| Length (in./mm, max) | 5.787/147 | |||||||||||
| Width (in./mm, ± .01 in.) | 4/101.6 | |||||||||||
| Weight (lb/kg, ± 3%) | 1.26/0.57 |
