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WD Purple WD43PURZ – 4 TB Surveillance Disk for NVR
Headline: WD Purple 4 TB (WD43PURZ) – Hard Drive for NVR and Surveillance
Subheading: Western Digital surveillance disk for mid-sized installations – 4 TB, 256 MB cache, 24/7 operation.
Description: The WD43PURZ is the 4 TB model in Western Digital's Purple series – the sweet spot for professional installations in mid-sized facilities. A larger cache (256 MB compared to 64 MB on the 1/2 TB models) provides noticeably better performance when simultaneously writing from many camera channels, which is exactly the scenario you have in an 8–16-channel NVR.
AllFrame™ technology keeps video streams intact even under high load – reducing dropped frames and corrupted segments that otherwise occur when multiple HD streams write to the same disk simultaneously. IntelliSeek™ dynamically adjusts seek speed to reduce power consumption, vibration, and noise – critical when the disk operates 24/7 in an NVR that is often located in control rooms or server rooms near office spaces.
The disk is designed for NVR systems with up to 16 drive bays and up to 64 HD camera streams simultaneously – the same top specification as more expensive 6/8/10 TB models. 180 TB/year workload rating, 300,000 load/unload cycles, 1 million hours MTBF, and 3-year manufacturer's warranty from Western Digital.
4 TB is the recommended size for 8–16-camera installations where you want about a month of continuous recording in 1080p or approximately two weeks in 4K (H.265). It is perfectly suited for Movok VK-NVR2108-8P (8 channels, 1 disk = 4 TB total) or VK-NVR2216-16P (16 channels, 2 × 4 TB = 8 TB total).
Specification:
Model: Western Digital WD Purple WD43PURZ
Capacity: 4 TB
Form Factor: 3.5"
Interface: SATA 6 Gb/s
Cache: 256 MB
RPM: 5400 RPM (class)
Recording Technology: CMR (Conventional Magnetic Recording)
Special Technology: AllFrame™ + IntelliSeek™
Workload Rating: 180 TB/year
Load/Unload Cycles: 300,000
Number of Camera Streams (HD): up to 64
Number of Disks per System: up to 16
Operation: 24/7 continuous
MTBF: up to 1 million hours
Warranty: 3 years (Western Digital)
Installation
Need help with the installation? We offer professional installation from SEK 1,495.
Shipping & Returns
Delivery: 2–7 business days within Sweden. Free shipping on orders over SEK 1,500. Returns: 30-day right of return on unopened packages. Warranty: 5 years on all equipment.
We stand behind what we sell — from the first contact to long after your system is in place
Professional installation
Our technicians are trained to industry standard and install and configure security systems according to product requirements and manufacturer instructions. We use CE-certified equipment.
Swedish support
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2-year guarantee
Applies to all equipment you buy from us. Can be extended up to 5 years. Statutory right of return.
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Parties and Agreement
Seller: Ensec AB ("Ensec", "we", "our")
Buyer: Individual or company over 18 years of age.
By completing a purchase, you accept these terms.
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All prices are in SEK including VAT unless otherwise stated. We reserve the right to change prices. Payment is made via Klarna, Apple Pay, Shopify Payments, cryptocurrency or bank card.
Delivery
Delivery normally takes 2–7 business days within Sweden. We are not liable for delays beyond our control. Free shipping over SEK 1,500 within Sweden.
Right of Withdrawal and Returns
Consumers have a 14-day right of withdrawal under the Swedish Distance Contracts Act. Returns must be in unbroken condition and original packaging. Business customers have no right of withdrawal unless otherwise agreed.
For returns, contact info@ensec.se for return instructions before sending the item back.
Complaints and Warranty
Complaints under the Swedish Consumer Sales Act. Warranty period: 2 years on all equipment from Ensec unless otherwise stated. Extended warranty up to 5 years is available. For faults, contact info@ensec.se promptly.
Limitation of Liability
Ensec is not liable for indirect or consequential damages. Our liability is limited to the purchase value, unless mandatory law provides otherwise.
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Disputes and Law
Swedish law applies. Disputes may be reviewed by the Swedish National Board for Consumer Disputes (ARN) or by a general court.
We dispatch all orders within 1–2 business days from our warehouse in Stockholm:
Sweden: 2–7 business days (PostNord MyPack)
Nordics: 4–10 business days
EU: 5–14 business days
UK: 7–14 business days (customs may apply)
Other markets (B2B): On request
Shipping Costs
Free shipping over SEK 1,500 within Sweden. Below this: SEK 49–149 depending on size/weight — exact price shown at checkout. International: SEK 149–499 depending on destination.
Tracking
You'll receive a tracking number by email as soon as the parcel is scanned by PostNord (usually within 24 h of dispatch).
Right of Withdrawal
As a consumer you have a statutory 14-day right of withdrawal. Note: professional TSCM equipment and special-order security products are subject to separate purchase terms. See our for the return process.
Damaged / Lost Parcel
Inspect the parcel on receipt. If damaged — contact us within 7 days with photos. Lost parcel — we open an investigation with PostNord and replace within 10 business days.
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