---
product_id: 405828201
title: "Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5\" - WD42PURZ"
brand: "western digital"
price: "$470.68"
currency: USD
in_stock: true
reviews_count: 8
category: "Western Digital"
url: https://www.desertcart.us/products/405828201-western-digital-4tb-wd-purple-surveillance-internal-hard-drive-hdd
store_origin: US
region: United States of America
---

# SATA 6 Gb/s interface speed 4TB storage capacity AllFrame tech for video integrity Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD42PURZ

**Brand:** western digital
**Price:** $470.68
**Availability:** ✅ In Stock

## Summary

> 🎥 Capture every moment flawlessly with WD Purple — the pro’s choice for surveillance storage!

## Quick Answers

- **What is this?** Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD42PURZ by western digital
- **How much does it cost?** $470.68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/405828201-western-digital-4tb-wd-purple-surveillance-internal-hard-drive-hdd)

## Best For

- western digital enthusiasts

## Why This Product

- Trusted western digital brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **AllFrame Technology:** Minimizes frame loss to ensure crystal-clear playback every time.
- • **Massive 4TB Capacity:** Store months of HD surveillance footage without compromise.
- • **Supports Up to 16 Bays:** Scalable storage solution for expanding multi-camera setups.
- • **Blazing SATA 6 Gb/s Speed:** Seamless data transfer for real-time video streaming and recording.
- • **Built for 24/7 Surveillance:** Engineered to endure constant operation and harsh NVR environments.

## Overview

The Western Digital 4TB WD Purple HDD is a surveillance-optimized internal hard drive featuring SATA 6 Gb/s connectivity, 256 MB cache, and AllFrame technology to reduce video frame loss. Designed for 24/7 operation in demanding NVR environments, it supports up to 16-bay systems and handles up to 180 TB/year workload, making it ideal for business and personal security setups.

## Description

The Right Drive for the Right Job. WD Purple drives are engineered specifically for surveillance to help withstand the elevated heat fluctuations and equipment vibrations within NVR environments. An average desktop drive is built to run for only short intervals, not the harsh 24/7 always-on environment of a high-definition surveillance system. With WD Purple, you get reliable, surveillance-class storage that’s tested for compatibility in a wide range of security systems, and some of our latest models (WD22PURZ, WD42PURZ, and WD63PURZ) have improved power efficiency. Exclusive AllFrame technology helps reduce frame loss and improve overall video playback.

Review: It is not working
Review: Stopped Working After 9 Months - Stopped Working in 9 months. Bad Sectors

## Features

- Engineered specifically for mainstream surveillance systems.Specific uses: Business, personal
- AllFrame technology delivers optimizations for write-intensive, low bit-rate, high stream-count workloads typical to mainstream surveillance applications.
- Supports up to 180 TB/yr workload rate². | ²Workload 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.
- 1TB¹ through 3TB support up to eight bays; 4TB and above support up to 16 bays and employ tarnish-resistant components for harsher environments.
- ¹As used for storage capacity, 1TB = one trillion bytes. Actual user capacity may be less, depending on operating environment.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09MSDP2DT |
| Best Sellers Rank | #19,176 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #62 in Internal Hard Drives |
| Box Contents | Internal Hard Drive |
| Brand | Western Digital |
| Brand Name | Western Digital |
| Cache Memory Installed Size | 4 |
| Color | Purple |
| Compatible Devices | Desktop |
| Connectivity Technology | SATA |
| Country of Origin | China |
| Customer Reviews | 3.7 out of 5 stars 3,535 Reviews |
| Digital Storage Capacity | 4 TB |
| Enclosure Material | Aluminium |
| Form Factor | 3.5-inch |
| Global Trade Identification Number | 00718037887944 |
| Hard Disk Form Factor | 3.5 Inches |
| Hard Disk Interface | Serial ATA |
| Hard Disk Type | Mechanical Hard Disk |
| Hard-Drive Size | 4 TB |
| Hardware Connectivity | SATA 6.0 Gb/s |
| Installation Type | Internal Hard Drive |
| Item Dimensions L x W x Thickness | 14.7L x 10.2W x 2.6Th Centimeters |
| Item Weight | 572 g |
| Manufacturer | Western Digital |
| Media Speed | 175 |
| Model Name | Purple HDD |
| Model Number | WD42PURZ |
| Network Connectivity Technology | SATA |
| Number of Items | 1 |
| Product Features | Data Recovery Service |
| Read Speed | 175 Megabytes Per Second |
| Special Feature | Data Recovery Service |
| Specific Uses For Product | business, personal |
| UPC | 718037887944 |
| Unit Count | 1.0 Count |

## Product Details

- **Digital Storage Capacity:** 4 TB
- **Hard Disk Interface:** Serial ATA
- **Connectivity Technology:** SATA
- **Brand:** Western Digital
- **Special Feature:** Data Recovery Service
- **Hard Disk Form Factor:** 3.5 Inches
- **Hard Disk Description:** Mechanical Hard Disk
- **Compatible Devices:** Desktop
- **Installation Type:** Internal Hard Drive
- **Colour:** Purple

## Images

![Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD42PURZ - Image 1](https://m.media-amazon.com/images/I/61phbPE+xLL.jpg)
![Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD42PURZ - Image 2](https://m.media-amazon.com/images/I/81RLMRzl6ML.jpg)
![Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD42PURZ - Image 3](https://m.media-amazon.com/images/I/81oySjLJmKL.jpg)
![Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD42PURZ - Image 4](https://m.media-amazon.com/images/I/61dtKBj5MnL.jpg)

## Available Options

This product comes in different **Pattern, Size, Style** options.

## Questions & Answers

**Q: Cmr or smr?**
A: Cmr

**Q: is it supported HIKVISION DVR ?**
A: Yes 100%

**Q: Is this compatible with TP-Link VIGI NVR1008H VIGI--without additonal efforts/power supply?**
A: Yes you can directly connect in your NVR. Power connection and SATA Connection available inside NVR only.

**Q: What is rpm?**
A: 7200

## Customer Reviews

### ⭐⭐⭐⭐⭐ It is not working
*by I***G on 23 December 2023*



### ⭐ Stopped Working After 9 Months
*by C***A on 21 December 2025*

Stopped Working in 9 months. Bad Sectors

### ⭐⭐⭐⭐⭐ Very Good product
*by J***L on 12 March 2024*

Very good performance. No issues.

## Frequently Bought Together

- Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD42PURZ
- Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ
- Western Digital 10TB WD Purple Pro Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD101PURP

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-20*