Western Digital WD43PURZ – 4TB 5400 RPM SATA 6Gb/s 3.5-Inch Surveillance Hard Drive (WD Purple Series)

The WD43PURZ is Western Digital’s 4TB WD Purple surveillance-class 3.5-inch drive, engineered for uninterrupted 24/7 recording in DVR and NVR platforms. For our wholesale channel, this SKU is a staple item for security distributors, CCTV installers and system integrators who deploy multi-camera recording systems: a single unit supports up to 64 simultaneous HD camera streams. The 5400 RPM (IntelliPower) spindle with SATA 6 Gb/s interface is optimized for sustained sequential writes and low thermal output — the appropriate profile for continuous video workloads rather than transactional storage.

Product Overview for Resellers & Integrators

This model is sourced in consistent production batches, so channel buyers can fulfill multi-unit NVR projects with matched firmware and manufacture dates. Units ship in sealed OEM retail packaging suitable for end-customer delivery. Standard warranty coverage applies per Western Digital’s surveillance drive policy, with our RMA desk handling returns and replacements for wholesale accounts. Please verify that target NVR/DVR chassis, power budgets and SATA controllers accommodate 3.5-inch drives and provide adequate airflow; the 0°C to 65°C operating range suits enclosed surveillance cabinets, though sustained ambient heat will shorten service life.

For channel positioning: WD Purple targets 24/7 video surveillance duty (distinct from Red for NAS, Blue for desktop, and Ultrastar/enterprise tiers), and the 180 TB/year workload rating reflects surveillance use rather than enterprise transactional loads. Integrators planning multi-bay NVR builds should calculate retention requirements before ordering — 4TB fills quickly with 64 HD streams — and are advised to order identical units from the same batch for uniform RAID and recording allocation. All shipments are CE, FCC and RoHS compliant and accompanied by standard export documentation for overseas delivery.

Key specifications (table)

Parameter	Specification
Model	WD43PURZ
Series	WD Purple (surveillance class)
Capacity	4 TB
Interface	SATA 6 Gb/s
Form Factor	3.5-inch
Spindle Speed	5400 RPM (IntelliPower; speed profile managed by WD)
Cache	64 MB
Workload Rate Limit	Up to 180 TB/year (surveillance-optimized; higher than typical desktop drives)
Recording Technology	AllFrame™ for enhanced video streaming and recording (reduces frame loss)
MTBF	1 million hours
Operating Temperature	0°C to 65°C
Camera Support	Up to 64 HD cameras simultaneously

Good to know

• Confirm that your NVR/DVR chassis, power supply, and SATA controller support 3.5-inch SATA drives and provide adequate cooling — the 0°C to 65°C operating range suits enclosed surveillance enclosures, but sustained ambient heat shortens drive life in any enclosure.
• Within WD’s lineup, Purple targets 24/7 video surveillance (versus Red for NAS, Blue for desktop, and Ultrastar/enterprise tiers for data-center workloads); the 180 TB/year workload rating reflects that surveillance duty cycle rather than enterprise transactional use.
• For multi-bay NVR builds, plan retention needs before ordering — 4TB fills quickly with 64 HD cameras, and mixing drive capacities across bays can complicate RAID or recording allocation; buy identical units from the same batch for uniform performance.
• Batch consistency is maintained for volume orders wherever possible; request current stock manufacture dates when placing large project orders.

Wholesale & Procurement Notes

• MOQ is negotiable depending on project size and stock position.
• Tiered volume pricing available — request a wholesale quote for current reseller rates.
• Typical lead time: 3–7 business days for in-stock items; larger project orders quoted individually.
• Packing & shipping: factory-sealed retail boxes, bulk carton packing, air or sea freight, DHL/FedEx express options with full export documentation (CE/FCC/RoHS compliant).
• RMA window: 30 days DOA coverage plus manufacturer warranty handling through our RMA desk for wholesale accounts.

To check live stock levels, batch dates or volume pricing for the WD43PURZ, please request a wholesale quote and our sales team will respond within one business day.