---
product_id: 487402622
title: "Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5\" -WD40EFPX"
brand: "western digital"
price: "1599 kr"
currency: DKK
in_stock: true
url: https://www.desertcart.dk/products/487402622-western-digital-4tb-wd-red-plus-nas-internal-hard-drive
store_origin: DK
region: Denmark
---

# 5400 RPM optimized speed 4TB storage capacity SATA 6 Gb/s interface Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX

**Brand:** western digital
**Price:** 1599 kr
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your NAS game with storage that works as hard as you do!

## Quick Answers

- **What is this?** Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX by western digital
- **How much does it cost?** 1599 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/487402622-western-digital-4tb-wd-red-plus-nas-internal-hard-drive)

## 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

- • **256 MB Cache Memory:** Boosts data access speeds, reducing wait times on critical tasks.
- • **Massive 4TB Storage:** Store your entire digital universe with ease and speed.
- • **SATA 6 Gb/s Interface:** Seamless, high-speed data transfer for professional workloads.
- • **Optimized 5400 RPM Spin:** Balanced performance and energy efficiency for 24/7 NAS use.
- • **Built for NAS Reliability:** Engineered with NASware firmware to ensure compatibility and durability in multi-bay environments.

## Overview

The WD Red Plus 4TB NAS Internal Hard Drive (WD40EFPX) is a 3.5-inch mechanical HDD designed for small to medium business NAS systems. Featuring a 5400 RPM spin speed, SATA 6 Gb/s interface, and 256 MB cache, it supports up to 180 TB/year workload with NASware firmware for enhanced compatibility and reliability. Backed by a 3-year limited warranty, it’s optimized for 24/7 operation in multi-bay NAS environments.

## Description

Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX

## Features

- Available in capacities ranging from 1-14TB(1) with support for up to 8 bays | (1) 1MB = 1 million bytes, 1GB = 1 billion bytes, and 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment.Specific uses: NAS,Business
- Supports up to 180 TB/yr workload rate(2) | (2) 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.
- NASware firmware for compatibility
- Built for small or medium business NAS systems in a 24/7 environment
- 3-year limited warranty(3) | (3) MTBF specifications are based on a sample population and are estimated by statistical measurements and acceleration algorithms under typical operating conditions: workload of 90TB/year and drive temperature of 40°C. Derating of MTBF will occur above these parameters, up to 65°C drive temperature. MTBF does not predict an individual drive’s reliability and does not constitute a warranty. Not all products may be available in all regions of the world.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Hard Drive | 4 TB Mechanical Hard Disk |
| Brand | Western Digital |
| Series | Red Plus |
| Item model number | WD40EFPX |
| Item Weight | 1.26 pounds |
| Product Dimensions | 5.79 x 4 x 1.03 inches |
| Item Dimensions  LxWxH | 5.79 x 4 x 1.03 inches |
| Color | Red |
| Hard Drive Interface | Serial ATA-600 |
| Hard Drive Rotational Speed | 5400 RPM |
| Voltage | 1 Volts |
| Manufacturer | Western Digital Technologies, Inc. |
| ASIN | B0BDXSK2K7 |
| Is Discontinued By Manufacturer | No |
| Date First Available | September 14, 2022 |

## Product Details

- **Digital Storage Capacity:** 4 TB
- **Hard Disk Interface:** Serial ATA-600
- **Connectivity Technology:** SATA
- **Brand:** Western Digital
- **Special Feature:** Portable
- **Hard Disk Form Factor:** 3.5 Inches
- **Hard Disk Description:** Mechanical Hard Disk
- **Compatible Devices:** NAS System
- **Installation Type:** Internal Hard Drive
- **Color:** Red

## Images

![Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX - Image 1](https://m.media-amazon.com/images/I/81wgF5tXOJL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is this WD Red drive backed by WD's 3-year limited warranty? I don't see it in the product description.**
A: I had an issue with some of the WD Red drives I had purchased through Amazon...
I had a failure and contacted WD for replacement under warranty...  
I was told that the drive I had only had a one year warranty period not the three year.
The drive serial number started with WD and that indicated it was a drive from a single disk NAS..  those have only a one year warranty
Where the other drives carry the 3 year.  
What is the difference in the drives i can not say or tell from looking at them and no other information was provided by WD.
I was told I needed to go back to the seller and see if they would fix the issue.
Since I've bought a number of drives over the last three years one at a time and registered them with WD, I didn't mark each drive and could not tell which drive came from what seller since the invoices didn't indicate the serial number of the drives..   I have 4 other drives in that situation. Since it was registered at the time I received the drive I know it was within the 3 years but after the 1 year warranty that WD would support.  I had to buy a replacement..  Thing is that all the drive were in WD boxes and sealed in static bags.

**Q: Can this drive be installed into an external HD case and used as a single drive media server or does it have to be installed in a NAS case?**
A: It's designed for continuous use and not intended to be shut down and restarted on a routine basis.  Those that say that they lack the performance of a desktop HD is just not true. they have similar performance characteristics with most 5200 RPM drives. One typically doesn't put a 4TB drive in a PC as a system drive. Usually, you would use a 1 TB drive that are typically 7200 RPM, which does provide better performance. If you really need that much space  in your PC (system or otherwise) you're better off not using a NAS drive, something like the Seagate Barracuda.

**Q: Why is this more expensive than an external wd 10 tb drive such as: https://www.amazon.com/s?k=wd+10tb+elements+desktop+usb+3.0+external+hard+drive&re**
A: The retail storage market is more competitive. NAS and Enterprise drives meet 24/7/365 read write reliability benchmarks and typically have a 3-5 year warranty. Retail consumer drives may in some cases last as long as NAS drives, but typically will have a shorter warranty. Note that liberating a hard drive from a retail external enclosure (to use in a PC) would likely void the drives warranty altogether.

**Q: Can this drive be used to replace the internal hard drive within the apple 3tb time capsule?**
A: Depends if it uses a 2.5in or 3.5inch drive or not. Specs are probably fine but need to know what size of hard drive it takes. Based on the dimensions of the apple device, it might accommodate this. Based on the apple dimensions, I would be surprised if it uses 3.5in drives but it isn't impossible.

## Frequently Bought Together

- Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX
- Synology 2-Bay DiskStation DS224+ (Diskless)
- Seagate IronWolf 4TB NAS Internal Hard Drive CMR 3.5 Inch SATA 6Gb/s 5400 RPM 64MB Cache for RAID Network Attached Storage Rescue Services (ST4000VNZ06/006)

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-23*