Western Digital WD85PURZ – 8TB 7200 RPM SATA 6Gb/s 3.5-Inch Surveillance Hard Drive (WD Purple Pro Series)

The WD85PURZ is a stock item in our surveillance storage category and is supplied to resellers, CCTV distributors and system integrators building or kitting out NVR solutions. As a WD Purple Pro 8TB drive, it is engineered for 24/7 continuous recording in AI-enabled recorders and multi-bay chassis, where sustained sequential write throughput and vibration tolerance matter more than desktop-style random-read behavior. Actual bandwidth in deployment depends on the host SATA controller and recording configuration, so we recommend validating against your reference NVR platform before committing large quantities.

Key specifications (table)

Parameter	Specification
Model	WD85PURZ (WD Purple Pro series)
Capacity	8 TB
Form Factor	3.5-inch
Interface	SATA 6 Gb/s (backwards compatible with slower SATA links, bandwidth then limited accordingly)
Spindle Speed	7200 RPM (higher sustained throughput than typical 5400 RPM surveillance-class drives)
Cache	256 MB
Workload Rate Limit	Up to 550 TB/year (guidance for planning, not a warranty term)
Recording Technology	AllFrame AI™ for AI-enabled NVRs (reduces frame loss during video plus analytics workloads)
MTBF	2.5 million hours (reliability metric, not a service-life guarantee)
Stream Support	Up to 64 HD video streams + 32 AI streams (camera count depends on bitrates and retention targets)
Operating Temperature	0°C to 65°C
Vibration Protection	Enhanced for multi-bay systems (relevant for dense NVR chassis)

Good to know

• Designed for surveillance NVRs, not NAS: WD Purple Pro targets 24/7 video write workloads, while IronWolf covers NAS and Exos covers enterprise storage — choose by workload class, not capacity alone.
• Within the WD Purple family, the Pro tier adds the 7200 RPM spindle, higher workload rating, and AllFrame AI support, positioning it above the standard Purple drives typically used in smaller DVR builds.
• Confirm your NVR firmware supports drives of this capacity tier before ordering, and size the array against camera count and retention days rather than the maximum stream ratings.

Supply & Batch Consistency

Units are sourced through authorized channels with traceable date codes. For project deployments we can match date codes and firmware revisions within a batch, which simplifies validation and reduces variability across installed sites. Mixed-batch orders are possible when timeline matters more than code matching — please state your preference at quotation stage.

Warranty, RMA & Compliance

Drives ship with the manufacturer’s limited warranty; our team handles RMA intake and provides advance-replacement options for qualifying B2B accounts to minimize project downtime. All units carry CE, FCC and RoHS certifications, and export documentation (commercial invoice, packing list, certificates of origin on request) is provided for customs clearance. Compliance paperwork bundles can be prepared per shipment for tender submissions.

Who Should Buy

This SKU is intended for resellers stocking surveillance storage, system integrators specifying NVR builds, and IT procurement teams provisioning multi-site CCTV rollouts. Retail-oriented single-unit buyers are better served by consumer channels; volume buyers benefit from our tiered pricing structure and consolidated freight.

Wholesale & Procurement Notes

• MOQ negotiable depending on destination and stock position
• Tiered volume pricing available — request a quote for your quantity band
• Typical lead time: in-stock items ship within 1–3 business days; larger allocations quoted per order
• Packing: anti-static OEM bulk pack or retail box; palletized air or sea freight with insurance on request
• RMA window: 30 days from receipt for DOA, manufacturer warranty thereafter, handled by our support desk

For current stock levels, date-code availability and volume pricing on the WD85PURZ, please request a wholesale quote and our sales team will respond within one business day.