---
product_id: 43980112
title: "4TB WD Purple Surveillance Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 64 MB Cache, 3.5\" - WD40PURZ"
brand: "wd"
price: "$475.77"
currency: USD
in_stock: true
category: "Western Digital"
url: https://www.desertcart.us/products/43980112-4tb-wd-purple-surveillance-internal-hard-drive-hdd-5400-rpm
store_origin: US
region: United States of America
---

# 64 MB cache for smooth video streaming Supports up to 64 HD cameras 5400 RPM optimized for 24/7 operation 4TB WD Purple Surveillance Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 64 MB Cache, 3.5" - WD40PURZ

**Brand:** wd
**Price:** $475.77
**Availability:** ✅ In Stock

## Summary

> 🔒 Secure every frame, every second — because your peace of mind can’t wait.

## Quick Answers

- **What is this?** 4TB WD Purple Surveillance Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 64 MB Cache, 3.5" - WD40PURZ by wd
- **How much does it cost?** $475.77 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/43980112-4tb-wd-purple-surveillance-internal-hard-drive-hdd-5400-rpm)

## Best For

- wd enthusiasts

## Why This Product

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

## Key Features

- • **SATA 6 Gb/s Speed:** Fast, reliable data transfer ensures no missed moments in your surveillance feed.
- • **Peace of Mind Warranty:** Backed by a 3-year limited warranty and data recovery service for ultimate reliability.
- • **AllFrame Technology Power:** Reduces video errors and pixelation for crystal-clear footage every time.
- • **Massive Multi-Camera Support:** Handles up to 64 HD cameras seamlessly—scale your security with confidence.
- • **Unstoppable 24/7 Surveillance:** Engineered for continuous, always-on security systems without compromise.

## Overview

The Western Digital 4TB WD Purple Surveillance HDD is a 3.5-inch internal hard drive designed specifically for 24/7 high-definition security systems. Featuring 5400 RPM speed, SATA 6 Gb/s interface, and 64 MB cache, it supports up to 64 HD cameras with AllFrame technology to minimize video errors and interruptions. Built for durability and reliability, it comes with a 3-year limited warranty and data recovery service, making it the go-to choice for professional surveillance setups.

## Description

WD Purple drives are built for 24/7, always-on, high-definition security systems. WD Purple surveillance storage feature Western Digital’s exclusive AllFrame technology, so you can confidently create a security system tailored to the needs of your business. Using AllFrame technology, WD Purple drives improve video capturing and helps to reduce errors, pixelation, and video interruptions that could happen in a video recorder system. WD Purple drives have an enhanced workload rating that supports systems designed for 24x7 video recording with up to 64 cameras.

## Features

- Built for 24/7 surveillance
- AllFrame technology for better performance
- Designed to support up to 64 HD cameras
- Engineered for compatibility
- 3-year manufacturer's limited warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071KVB4F8 |
| Additional Features | Data Recovery Service |
| Best Sellers Rank | #17 in Internal Hard Drives |
| Brand | WD |
| Built-In Media | Hard Drive |
| Cache Memory Installed Size | 64 |
| Color | Purple |
| Compatible Devices | Desktop |
| Connectivity Technology | SATA |
| Customer Reviews | 4.6 4.6 out of 5 stars (4,399) |
| Data Transfer Rate | 5000 Megabits Per Second |
| Digital Storage Capacity | 4 TB |
| EU Spare Part Availability Duration | 3 Years |
| Enclosure Material | Metal |
| Form Factor | 3.5-inch |
| Global Trade Identification Number | 00718037856773 |
| Hard Disk Average Latency | 5.56 Milliseconds |
| Hard Disk Description | Mechanical Hard Disk |
| Hard Disk Form Factor | 3.5 Inches |
| Hard Disk Interface | Serial ATA |
| Hard Disk Rotational Speed | 5400 RPM |
| Hard-Drive Size | 4 TB |
| Hardware Connectivity | SATA 6.0 Gb/s |
| Installation Type | Internal Hard Drive |
| Item Dimensions L x W x Thickness | 5.79"L x 4"W x 1.03"Th |
| Item Type Name | WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40PURZ |
| Item Weight | 1.5 Pounds |
| Manufacturer | Western Digital Bare Drives |
| Mfr Part Number | WD40PURZ |
| Model Name | Purple |
| Model Number | WD40PURZ |
| Number of Items | 1 |
| Specific Uses For Product | business, personal |
| UPC | 718037856773 |
| Unit Count | 17.6 Ounce |
| Warranty Description | Western Digital ("WD") values your business and always attempts to provide you the very best of service. No limited warranty is provided by WD unless your WD Product ("Product") was purchased from an authorized distributor or authorized reseller. Distributors may sell Products to resellers who then sell Products to end users. Please see below for warranty information or obtaining service. No warra… |

## Product Details

- **Brand:** WD
- **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

![4TB WD Purple Surveillance Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 64 MB Cache, 3.5" - WD40PURZ - Image 1](https://m.media-amazon.com/images/I/61Np0SuI9rL.jpg)

## Questions & Answers

**Q: can it replace older hhd in nightowl dvr**
A: Yes. This hard drive is compatible with all recording units.

**Q: What is the difference between 3tb purple wd30purz and wd30purz, very confusing?**
A: Absolutely nothing. They are the same.

**Q: Is this compatible with annke surveillance camera system 8ch 1080p lite h.264+ dvr with (8) hd 1080p outdoor weatherproof cameras cctv security camera**
A: As the owner of South Jersey Surveillance Systems, I can assure you that any WD purple or Seagate Skyhawk hard drive is the appropriate type of storage drive for any and all DVRs and NVRs.

**Q: Whats the difference between this and the red plus?**
A: WD Blue HDDs are mainly used for general purpose storage, they are great all-rounders, and an average user can’t go wrong with Blue.

WD Green is basically same as Blue, but it lacks a bit of performance. However, it is the most eco-friendly HDD, and it’s quite cheap.

WD Blacks are for pure performance including gaming, media, and content creation. Also one of the most expensive HDDs.

WD Red is a NAS drive. It’s optimized for NAS systems.

WD Purple is for surveillance. Advised for 24/7 operation.

WD Gold, probably the most premium of all. Made for a multitude of Datacenter-specific applications.

## Frequently Bought Together

- Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD40PURZ
- Amcrest NV4108E-A2 4K 8CH POE NVR (1080p/3MP/4MP/5MP/8MP) POE Network Video Recorder - Supports up to 8 x 8MP/4K IP Cameras, 8-Channel Power Over Ethernet Supports up to 10TB HDD (Not Included)
- Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-28*