







🚀 Elevate your NAS game with WD Red Plus — where reliability meets relentless performance!
The Western Digital 4TB WD Red Plus NAS Internal Hard Drive (WD40EFPX) is a 3.5-inch mechanical HDD designed specifically for NAS systems up to 8 bays. Featuring 5400 RPM speed, SATA 6 Gb/s interface, 256 MB cache, and CMR technology, it delivers reliable 24/7 operation with RAID-optimized error recovery and enhanced vibration/noise protection. Ideal for home offices and medium-sized businesses, it ensures secure, high-capacity storage tailored for professional-grade data management.



| Asin | B0BDXSK2K7 |
| Best Sellers Rank | #31,732 in Computers & Accessories (See Top 100 in Computers & Accessories) #81 in Internal Hard Drives |
| Brand Name | Western Digital |
| Cache Memory Installed Size | 4 |
| Color | Red |
| Compatible Devices | Desktop, NAS |
| Compatible Video Game Console Models | Sony PlayStation 5 |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,097) 4.4 out of 5 stars |
| Digital Storage Capacity | 4 TB |
| Form Factor | 3.5-inch |
| Global Trade Identification Number | 00718037899794 |
| Hard Disk Form Factor | 3.5 Inches |
| Hard Disk Interface | SATA 6 GB/s |
| Hard Disk Rotational Speed | 5400 RPM |
| Hard Disk Type | Mechanical Hard Disk |
| Hard Drive Size | 4 TB |
| Hardware Connectivity | SATA 6.0 Gb/s |
| Installation Type | Internal Hard Drive |
| Item Weight | 570 Grams |
| Manufacturer Part Number | WD40EFPX |
| Model Name | WD Red Plus |
| Model Number | WD40EFPX |
| Network Connectivity Technology | SATA |
| Product Features | NASware firmware, CMR technology, RAID-optimized, 24/7 operation |
| Read Speed | 150 Megabytes Per Second |
| Specific Uses For Product | Business |
| Unit Count | 1.0 Count |
| Upc | 718037899794 |
User
Perfect fit for my wd cloud ex2 ultra
Good
User
Great service WD
Good
User
DEFECTIVE PRODUCT
I am writing to express my extreme disappointment with the recent purchase of a WD NAS 4TB HDD from your store on Amazon. Unfortunately, the product I received was defective, and my overall experience has been nothing short of frustrating.I feel it is essential to inform potential buyers about my negative experience to prevent others from facing similar issues. I strongly advise against purchasing from your store and will be sharing my experience on other platforms to raise awareness.I urge you to take immediate action to improve the quality of your products and the level of customer service provided. Customers deserve transparency and reliability, and my experience with your store has fallen short on both fronts.I hope this feedback serves as a wake-up call for your business to address these issues promptly.
User
Wider Problem with these drives
I recieved the HDD in poor packaging and the drive was not working.On that note, I decided to buy this particular model of drive locally. To my surprise, I had to exchange 4 drive before I could get a drive that was functioning. These drives inherently seem to be defective. The noise of the hdd head is quite prominent compared to other drives.
User
Defective Drive received
Bought 4, out of which these 2 Drive are defective, My NAS, WDMYCLOUDpr4100 didn't detect these 2. Checked it with my PC show I/O error and these 2 are not detectable. You can he a chuckling sound in the drive.
User
Defective device delivered
Product came in an wide open esd package with no esd seal, no other genuine WD packaging. Device was dead on arrival, means PC wont detect the hardware after numerous tries. Amazon refused to refund or replace the device giving bogus reasons, packaging did not have a warranty card.
User
Defective Disk Drive
This disk drive was not detected by Synology NAS although it is in compatible list. Testing with other computer found it to be in uninitialized state.....all attempts to initialize failed due to IO error. It was not even detected in Western Digital dashboard that shows diagnostics.
User
This takes huge returning time
This is not as fit as company claim. I will suggest to buy normal product rather then nas hard disk.
User
WD quality. Recommended.
Arrive well and fast. Performance wise is also is typically of WD quality.
User
Trustworthy Storage
I have been purchasing HDDs for many decades now and I am sticking to the Western Digital brand because I trust WD to reliably store my data (all personal, including many TB of family video). Some HDDs are on 24/7 with constant access and can get hot, especially when the ambient temperature is high during summer, and I choose WD Red for these more demanding uses.As a personal user, I carefully pick the size and style (e.g. Green Blue Black Red, Red Plus, Red Pro) to give the best price per TB and performance for intended usage. I am paranoid about preserving data and have a rigorous strategy of redundant usage and multiple backups which I have had to prove on occasions due to human error.I do not expect HDDs, from any brand, to last forever though some are still going strong after 20 years with no hint of degradation. In my experience, a few % of HDDs start to show signs of problems after 5 years, and I constantly monitor the raw read error count. These WD HDDs keep going reliably with 100% data integrity for years after the first signs of problems, allowing me time to choose how to retire/replace. I have never had a WD HDD fail catastrophically, it is always a graceful degradation, hence why I trust WD to look after my data.
User
安いが納期がかなり遅い。幸せなサポート対応ありがとう。(笑)
HDDなので、それなり。初期不良もないようですがそんな短時間では評価できない。ただ、納期がかなり長い上に予告された遅い方の納期よりさらに2日ほど遅延した。配達日が決まってから希望の配達時間に2度変更したが、そに2日遅延した理由が私の希望なんだと都合のいい解釈をサポートの対応して下さった方はしていた。幸せな人なんだなぁと思った。(苦)
User
Sólo pidan que lleve el embalaje correcto.
Hasta el momento ha sido muy buena elección, no me ha dado problemas de lectura, lo que sí recomendaría, comprar una funda USB para no tener que comprar adaptadores, de ahí en más, excelente producto. Sólo al momento de recibirla me di cuenta de que no le habían puesto material de embalaje que evitara que rebotara en su traslado, lo cual le hice saber al vendedor, espero a futuro, no me falle por esta situación, ya que los golpes, siento que afectan este tipo de equipos, de ahí en Fuera, sin problema .
User
Quiet, fast, perfect
The disks are so quiet when in full load. Unbelievable.
Trustpilot
3 weeks ago
1 week ago