---
product_id: 487402622
title: "4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5\" -WD40EFPX"
brand: "wd"
price: "¥63156"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/487402622-4tb-wd-red-plus-nas-internal-hard-drive-hdd-5400
store_origin: JP
region: Japan
---

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

**Brand:** wd
**Price:** ¥63156
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your NAS game with WD Red Plus — where reliability meets relentless performance!

## Quick Answers

- **What is this?** 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX by wd
- **How much does it cost?** ¥63156 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/487402622-4tb-wd-red-plus-nas-internal-hard-drive-hdd-5400)

## 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

- • **Massive 4TB Storage:** Store and safeguard your critical data with ample space for all your NAS needs.
- • **Optimized 5400 RPM Speed:** Balanced performance and energy efficiency for 24/7 NAS operation without compromise.
- • **NASware Firmware Compatibility:** Engineered specifically for NAS systems to maximize reliability and reduce downtime.
- • **Seamless SATA 6 Gb/s Connectivity:** Experience fast, reliable data transfer with industry-standard interface compatibility.
- • **Built for Business-Grade Endurance:** Supports up to 180TB/year workload with a 3-year limited warranty for peace of mind.

## Overview

The Western Digital 4TB WD Red Plus NAS Internal Hard Drive (WD40EFPX) is a 3.5-inch SATA 6 Gb/s HDD designed for small to medium business NAS environments. Featuring 4TB capacity, 5400 RPM rotational speed, 256MB cache, and NASware firmware, it supports up to 180TB/year workload and offers a 3-year limited warranty, ensuring dependable, efficient, and scalable storage for critical data.

## Description

Packed with power to handle NAS environments in home offices up to medium-sized businesses, WD Red Plus is ideal for helping protect, archive, and share valuable data in NAS systems with up to 8 bays. WD Red Plus NAS drives give you the flexibility, versatility, and confidence you need for your important home and work files.

## 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 |
|---------------|-------|
| ASIN | B0BDXSK2K7 |
| Additional Features | Portable |
| Best Sellers Rank | #7 in Internal Hard Drives |
| Brand | WD |
| Built-In Media | Internal Hard Drive |
| Cache Memory Installed Size | 4 |
| Color | Red |
| Compatible Devices | NAS System |
| Connectivity Technology | SATA |
| Customer Reviews | 4.5 4.5 out of 5 stars (9,627) |
| Digital Storage Capacity | 4 TB |
| Enclosure Material | Information Not Available |
| Form Factor | 3.5-inch |
| Global Trade Identification Number | 00718037899794 |
| Hard Disk Description | Mechanical Hard Disk |
| Hard Disk Form Factor | 3.5 Inches |
| Hard Disk Interface | Serial ATA-600 |
| 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 | Internal Hard Drive |
| Item Weight | 570 Grams |
| Manufacturer | Western Digital Technologies, Inc. |
| Mfr Part Number | WD40EFPX |
| Model Name | Red Plus |
| Model Number | WD40EFPX |
| Number of Items | 1 |
| Read Speed | 150 Megabytes Per Second |
| Specific Uses For Product | Business, NAS |
| UPC | 718037899794 |
| Unit Count | 1.0 Count |
| Warranty Description | 3 years limited warranty |

## Product Details

- **Brand:** WD
- **Color:** Red
- **Compatible Devices:** NAS System
- **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-600
- **Installation Type:** Internal Hard Drive
- **Special Feature:** Portable

## Images

![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)
![4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX - Image 2](https://m.media-amazon.com/images/I/418+NU4w0gL.jpg)
![4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX - Image 3](https://m.media-amazon.com/images/I/71R1j+fDkgL.jpg)
![4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX - Image 4](https://m.media-amazon.com/images/I/813O9B7PBUL.jpg)
![4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX - Image 5](https://m.media-amazon.com/images/I/91LOX0pJJhL.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 Japan*
*Store origin: JP*
*Last updated: 2026-08-02*