---
product_id: 420527069
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: "12255547₫"
currency: VND
in_stock: true
reviews_count: 13
category: "Western Digital"
url: https://www.desertcart.vn/products/420527069-western-digital-4tb-wd-purple-surveillance-internal-hard-drive-hdd
store_origin: VN
region: Vietnam
---

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

**Brand:** western digital
**Price:** 12255547₫
**Availability:** ✅ In Stock

## Summary

> 🔒 Secure your peace of mind with storage that never sleeps

## 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?** 12255547₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/420527069-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 for flawless video playback and security footage integrity
- • **High Workload Endurance:** Supports up to 180 TB/year workload—built to handle intense, continuous data streams
- • **Power-Efficient & Durable:** Optimized for harsh environments with tarnish-resistant components and improved energy use
- • **Easy Plug & Play Installation:** Simple swap-in design saves you time and money on system upgrades
- • **Surveillance-Grade Reliability:** Engineered for 24/7 high-definition video recording without fail

## Overview

The WD Purple 4TB Surveillance Internal Hard Drive is purpose-built for mainstream surveillance systems, delivering robust 24/7 performance with SATA 6 Gb/s speed and a 256 MB cache. Its AllFrame technology reduces video frame loss, ensuring smooth playback and reliable footage capture. Designed to endure up to 180 TB of annual data transfer, this 3.5-inch drive supports multi-bay setups and harsh environments, making it the trusted choice for business and personal security solutions.

## 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: Super Easy to Install & Works Like A Charm! - I needed to replace the 2 TB hard drive in my NightOwl 3 MP Surveillance Camera system, because the original hard drive quit recording after three years of service. I was on the fence about whether to invest my money into replacing the failed hard drive with this new Western Digital 4TB Purple hard drive, or spend a little bit more money, and replace the entire system. Since I’m not a Computer Tech by any means, the thought of ignoring the manufacturer’s warning labels against opening up the DVR case, and then then having to poke around with a screw driver, to uninstall the old, to replace with it with this new one made me nervous. I understand hard drives to be fragile, and the thought of handling these hard drives during the swap, was scary to me. I couldn’t afford to mess it up. Much to my surprise, it was an extremely simple task. I did watch a utube video on it beforehand, which did help me. It took more time to unscrew the DVR case, than than it did to swap out the parts. It’s just a matter of unplugging the old one, and plugging in this new one. Close the case back up, power on, and follow the on prompts in the screen. This 4Tb Western Digital Purple hard drive made especially for surveillance applications, installs itself from there. It was quick. It was easy, and it has performed. The best part is that it saved me money from having to purchase a whole new system. I’m very happy with my purchase. I believe it was money “well spent”, and I can highly recommend this Purple hard drive, with confidence. Thank you, Western Digital, for producing a quality product
Review: Great out of the box quality drive - Installation was easy and this worked flawlessly right out of the box. I know this won't last as long as a computer hard drive as this works 24/7 and 365 days a year, the original factory drive was a different brand (Sea something) and lasted about a year before having issues. I believe this is a good value for the money and formatting this was a breeze. The drive is western digital and I have always had good luck with WD drives as their drives have always been quality. The noise level did not seem excessive considering it is always writing data files.

## 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 |
| Additional Features | Data Recovery Service |
| Best Sellers Rank | #20 in Internal Hard Drives |
| Brand | Western Digital |
| Built-In Media | Internal Hard Drive |
| Cache Memory Installed Size | 4 |
| Color | Purple |
| Compatible Devices | Desktop |
| Connectivity Technology | SATA |
| Customer Reviews | 4.5 out of 5 stars 943 Reviews |
| Digital Storage Capacity | 4 TB |
| Enclosure Material | Metal |
| Form Factor | 3.5-inch |
| Global Trade Identification Number | 00718037887944 |
| Hard Disk Description | Mechanical Hard Disk |
| Hard Disk Form Factor | 3.5 Inches |
| Hard Disk Interface | Serial ATA |
| Hard-Drive Size | 4 TB |
| Hardware Connectivity | SATA 6.0 Gb/s |
| Hardware Platform | PC |
| Installation Type | Internal Hard Drive |
| Item Dimensions L x W x Thickness | 5.79"L x 4"W x 1.03"Th |
| Item Weight | 1.26 Pounds |
| Manufacturer | Western Digital Technologies, Inc. |
| Media Speed | 175 |
| Mfr Part Number | WD42PURZ |
| Model Name | Purple HDD |
| Model Number | WD42PURZ |
| Number of Items | 1 |
| Read Speed | 175 Megabytes Per Second |
| Special Feature | Data Recovery Service |
| Specific Uses For Product | business, personal |
| UPC | 718037887944 |
| Unit Count | 1.0 Count |
| Warranty Description | 3 year Limited Warranty |

## Product Details

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

## 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)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: capacidad 1tb y estilo 4 tb, es un error?**
A: Como sabras,el HDD que compré,fue para ser instalado en un sistema de camaras o sea en un NVR para correr con 14 camaras IP,y se suponia que se pudiera hacer un FORMAT para ponerlo a trabajar,pero al ejecutar la operacion nunca la realizó. De modo que de ninguna manera se pudo hacer la operacion y hubo de abortarse su uso. Esta es la informacion del disco: Western Digital Disco duro interno de vigilancia púrpura de 4 TB - SATA 6 Gb/s .
La pregunta technica que me haces,creo que no viene al caso,pues el frabricante del disco dice en sus recomendaciones,que puede trabajar hasta con 64 camaras y yo solo uso 14 en el sistema que poseo.

**Q: What is the warranty for this had? I don't see it listed anywhere.**
A: Three-Year Limited Warranty
As an industry-leading hard drive manufacturer, Western Digital stands behind their surveillance storage solutions with a 3-year limited warranty6 included with every WD Purple drive.

**Q: Would this hard drive work with the night owl btd2 system?**
A: If its SATA format

**Q: Is this 4K?**
A: I believe it is.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Super Easy to Install & Works Like A Charm!
*by D***D on July 22, 2022*

I needed to replace the 2 TB hard drive in my NightOwl 3 MP Surveillance Camera system, because the original hard drive quit recording after three years of service. I was on the fence about whether to invest my money into replacing the failed hard drive with this new Western Digital 4TB Purple hard drive, or spend a little bit more money, and replace the entire system. Since I’m not a Computer Tech by any means, the thought of ignoring the manufacturer’s warning labels against opening up the DVR case, and then then having to poke around with a screw driver, to uninstall the old, to replace with it with this new one made me nervous. I understand hard drives to be fragile, and the thought of handling these hard drives during the swap, was scary to me. I couldn’t afford to mess it up. Much to my surprise, it was an extremely simple task. I did watch a utube video on it beforehand, which did help me. It took more time to unscrew the DVR case, than than it did to swap out the parts. It’s just a matter of unplugging the old one, and plugging in this new one. Close the case back up, power on, and follow the on prompts in the screen. This 4Tb Western Digital Purple hard drive made especially for surveillance applications, installs itself from there. It was quick. It was easy, and it has performed. The best part is that it saved me money from having to purchase a whole new system. I’m very happy with my purchase. I believe it was money “well spent”, and I can highly recommend this Purple hard drive, with confidence. Thank you, Western Digital, for producing a quality product

### ⭐⭐⭐⭐⭐ Great out of the box quality drive
*by D***L on January 22, 2025*

Installation was easy and this worked flawlessly right out of the box. I know this won't last as long as a computer hard drive as this works 24/7 and 365 days a year, the original factory drive was a different brand (Sea something) and lasted about a year before having issues. I believe this is a good value for the money and formatting this was a breeze. The drive is western digital and I have always had good luck with WD drives as their drives have always been quality. The noise level did not seem excessive considering it is always writing data files.

### ⭐⭐⭐⭐⭐ Easy install with plenty of storage capacity for my Tigersecu system.
*by M***X on June 1, 2025*

Used/Using it in a Tigersecu Security System 16 Channel DVR. First time I've ever installed a hard Drive so I was initially a bit concerned but instructions were clear and it was actually pretty simple. It doesn't make any sound at all and working fine with no issues for 3 years now. I also like the amount of storage capacity.

## Frequently Bought Together

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-06-06*