Western Digital 8TB Purple Pro Surveillance HDD, SATA 6 Gb/s, 256MB Cache, 3.5", WD8002PURP
The WD Purple Pro 8TB (model WD8002PURP) is a high‑performance, 3.5‑inch surveillance‑grade hard drive designed for always‑on video recording, AI‑assisted video analytics, and multi‑camera systems. With a 7200 RPM spindle speed, large 256 MB cache, and a SATA III interface, it supports high throughput and heavy workload usage. Its firmware and features are tuned to reduce frame loss, sustain multiple video streams, and maintain reliability in demanding environments.
Capacity
8 Terabytes (8 TB) of storage.Form Factor
Standard 3.5‑inch internal HDD.Interface
SATA III (6 Gb/s) interface. Backwards compatible with SATA II/I.Spindle Speed (RPM)
7200 RPM, which gives better performance than lower speed (5400 RPM) surveillance drives.Cache / Buffer Size
256 MB DRAM cache, which helps in smoothing read/write bursts and improving performance for multiple streams.Sustained Transfer Rate
Up to ≈ 267 MB/s internal sustained transfer speed.Workload Rating
Designed for heavy workloads: rated for ≈ 550 TB/year of data writes/reads. Suitable for always‑on surveillance / AI video systems.Support for Many Cameras / Streams
Supports up to 64 HD camera single streams, plus up to 32 AI streams per drive in advanced systems.Reliability / MTBF
MTBF (Mean Time Between Failures) of about 2,000,000 hours.Non‑recoverable Read Error Rate
< 1 per 10^15 bits read.Load/Unload Cycles
Rated for approx 600,000 load/unload cycles, which helps with durability especially in frequent use / power on/off or alarm‑triggered recording start/stop.Operating / Environmental Conditions
Operating temperature: 0 °C to 65 °C.
Non‑operating (storage) temperature: −40 °C to +70 °C.
Power Consumption
Read/write: about 7.3 Watts.
Idle: ~6.5 W.
Standby / sleep: ~0.3 W.
Dimensions / Weight
Approx 147 mm × 101.6 mm × 26.1 mm; weight ~ 715 grams.Warranty & Special Features
5‑year limited manufacturer warranty.
Features AllFrame AI technology to reduce frame drops, improve video playback and support multiple streams.
Tarnish‑resistant components and design elements for reliability in harsher environments.
