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- WD Purple 4TB Surveillance HDD 3.5" SATA III 256MB 24/7 DVR/NVR WD Purple 4TB Surveillance HDD 3.5" SATA III 256MB 24/7 DVR/NVR
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WD Purple WD43PURZ 4TB Surveillance Hard Drive
The WD Purple WD43PURZ is a purpose-built 4TB surveillance hard drive engineered specifically for security camera systems and video recording applications. This 3.5-inch internal drive delivers reliable performance for DVR and NVR installations requiring continuous operation and high stream counts.
Surveillance-Optimized Performance
Built for write-intensive surveillance environments, this drive supports up to 180TB per year workload rate, handling the constant data streaming from multiple security cameras. The 256MB cache buffer ensures smooth video recording across high stream-count applications, while the 5400RPM rotational speed balances performance with power efficiency for 24/7 operation.
The drive features prioritized write-operations tuned specifically for the low bit-rate, high stream-count patterns typical in surveillance applications. TLER (Time Limited Error Recovery) and ATA streaming support prevent video frame drops during recording, maintaining continuous surveillance coverage.
Multi-Bay System Support
The WD Purple WD43PURZ supports more than eight drive bays, making it suitable for enterprise-level surveillance installations. Tarnish-resistant components enhance reliability in varied environmental conditions, extending operational lifespan in demanding security system deployments.
Technical Specifications
More Cameras. More Clarity. More Surveillance. Capture it in Purple
- Engineered specifically for surveillance security systems.
- Supports up to 180 TB/yr workload rate*.
- Tuned for write-intensive, low bit-rate, high stream-count applications typical to most surveillance applications.
- Prioritized write-operations for maximized surveillance performance.
- TLER & ATA streaming support.
- Support for more than eight bays**.
- Tarnish-resistant components**.
*Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred ? (8760 / recorded power-on hours)). Workload Rate will vary depending on your hardware and software components and configurations.
**For capacities 4TB and higher.
Model
WD Purple
WD43PURZ
Capacity
4TB
Interface
SATA III
Cache
256MB
Rotational Speed
5400RPM
Data Transfer
SATA III: 6.0 Gbit/s
Physical Drive Size
3.5"
Packaging
OEM anti-static bag
- Type Of Drive: HDD
- Physical Drive Size: 3.5
- Connection: SATA III
- Capacity: 4TB
- Drive Classification: Surveillance
- Packaging: OEM
Delivery & Shipping Policy
Last updated: 19/09/2025
At Tech Direct UK, we aim to get your order to you as quickly and efficiently as possible. Please see below for our delivery terms.
1. Delivery Options & Costs
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Free Delivery – Orders over £50 qualify for free UK standard delivery.
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Standard Delivery – Orders under £50 are charged at £4.99.
2. Delivery Times
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Next Day Delivery – The majority of items are shipped via next day courier if ordered before 2:00pm (Monday–Friday).
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Orders placed after 2:00pm, on weekends, or bank holidays will be processed the next working day.
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Larger or Heavy Items – Certain products (e.g., heavy furniture, oversized goods) may take 2–5 working days for delivery. Estimated times will be displayed at checkout.
3. Delivery Areas
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We deliver to all mainland UK addresses.
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Deliveries to remote areas (e.g., Highlands, Islands, Northern Ireland) may take longer or incur additional charges — these will be shown at checkout before confirming your order.
4. Tracking Your Order
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Once dispatched, you will receive an email confirmation with tracking details (where available).
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You can track your delivery via the courier’s website.
5. Missed Deliveries
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If you are not available at the time of delivery, the courier will leave a card or attempt redelivery.
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Repeated failed delivery attempts may result in the parcel being returned to us. In this case, re-delivery charges may apply.
6. Risk of Loss
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Risk of loss or damage to the goods passes to you once they are delivered.
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Please inspect your order upon receipt and notify us of any issues within 48 hours.
7. Contact Us
If you have any questions about delivery, please contact us:
📧 Email: support@techdirectuk.com