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Western Digital

Western Digital 4TB WD Red NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, SMR, 256MB Cache, 3.5" - WD40EFAX

  • Based on 12,136 reviews
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Availability: 20 left in stock
Fulfilled by CorteseInc
Arrives Saturday, Jun 28
Order within 15 hours and 51 minutes
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Capacity: 4TB


Style: Red


Pattern: Hard Drive


Features

  • Available in capacities ranging from 2-6TB with support for up to 8 bays
  • 5400RPM performance class
  • NASware firmware for compatibility
  • NAS systems with daily workloads associated with personal and home office environments and idle time available to perform necessary background operations
  • Supports up to 180 TB/yr Workload Rate 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))
  • 3-year limited warranty

Description

There’s a leading edge WD Red drive for every compatible NAS system to store your precious data. With drives up to 6TB, WD Red offers a wide array of storage for customers looking to build a NAS solution. Built and tested for personal and home NAS systems with up to 8-bays, these drives pack all the punch you need in one powerhouse unit for storing, archiving, and sharing. With WD RedTM, you’re ready for what’s next.

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: Storage System


Installation Type: Internal Hard Drive


Color: Red


EU Spare Part Availability Duration: 3 Years


Installation Type: Internal Hard Drive


Item Dimensions L x W x Thickness: 5.79"L x 4"W x 1.03"Th


Unit Count: 1.0 Count


Number of Items: 1


Item Weight: 1.5 Pounds


Hard-Drive Size: 4 TB


UPC: 718037861036


Manufacturer: Western Digital


Global Trade Identification Number: 36, 60


Included Components: Internal HDD


Model Name: WD Red


Brand Name: Western Digital


Model Number: WD40EFAX


Hard Disk Description: Mechanical Hard Disk


Material Type: Information Not Available


Color: Red


Read Speed: 180 Megabytes Per Second


Media Speed: 150 MB/s


Cache Memory Installed Size: 256


Data Transfer Rate: 180 Megabits Per Second


Form Factor: 2.5 in|3.5 in


Hardware Connectivity: SATA 6.0 Gb/s


Hard Disk Form Factor: 3.5 Inches


Compatible Devices: Storage System


Hard Disk Rotational Speed: 5400 RPM


Specific Uses For Product: business, personal


Digital Storage Capacity: 4 TB


Hard Disk Interface: Serial ATA-600


Connectivity Technology: SATA


Additional Features: Portable


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jun 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

🚀 Abunda's Overview

This is our summary and key points to consider based on customer reviews.

The WD Red NAS Hard Drive is highly praised for its extensive lifespan and exceptional reliability. Designed for continuous operation, these drives measure up to 4 TB in storage and are reported to install seamlessly into NAS devices. Some users remark that they have used them round-the-clock for over five years without issues. However, one criticism is that the 1-4TB sizes are SMR drives, which some feel is less suitable for RAID systems.

Pros

  • 👍 Exceptional longevity and reliability
  • 💾 High storage capacity (up to 4TB)
  • 🔄 Operates continuously without issue
  • 🔌 Installs seamlessly into NAS devices

Cons

  • 🔻 Low suitability for RAID systems due to being SMR drives
  • 👎 Some users feel that their life-span is shorter than they should be

Should I Buy It?

Yes, the WD Red NAS Hard Drive is highly recommended for its impressive durability, seamless installation, and extensive storage capacity. Those planning to use them in a RAID system, however, should note they are SMR and not CMR drives.

    • Good for our movie collection
Capacity: 6TB Style: Red Pattern: Hard Drive
We needed a place to store our movie collection and these fit the bill. We set up a NAS program with these and they work well. Very pleased.
Reviewed in the United States on October 23, 2024 by Deb
    • Western Digital NAS Hard Drive
Capacity: 2TB Style: Red Pattern: Hard Drive
This is not your average Western Digital desktop hard drive. The WD Reds are made for heavy duty, high duty cycle use. They are made for use in Network Attached Storage devices. The NAS environment can really torture a hard drive. Especially when it has to support a lot of users and devices. This hard drive is made to be able to function in such an environment. I have a Terramaster NAS in my home network. That system has two Seagate Ironwolf hard drives. It has been flawless in operation. I attached an external hard drive enclosure to the Terramaster to have a backup of all the data. The hard drive enclosure does not come with its own hard drive. You get to choose, depending on your needs. I bought this WD Red hard drive to use as the backup for the Terramaster. I backup the data from the NAS on this hard drive and then store the drive in a safe location. The WD Red has been flawless. It is easily the equivalent of the Seagate Ironwolf. The operation is silent and reliable. I have not had any issues with these NAS hard drives. Yes you can use a regular desktop hard drive for this purpose. A WD Blue caviar hard drive will also work. However, the WD Red is a more robust hard drive. It is more expensive than a regular desktop hard drive. But the reliability and peace of mind are worth it. NAS hard drives will also work on your desktop computer. You can swap out your WD Blue hard drive for this one. You will get added durability and dependability. But it will only be worth the extra cost if your computer is regularly stressed. A one-user desktop PC that gets used for 5 hours per day is not under stress. However, if you have a PC that is used for security monitoring purposes or as a home server, then yes, invest in a more robust hard drive. I love solid state hard drives for their performance and lighter weight when used on a laptop. However, for storage purposes, I still prefer a mechanical hard drive. If I were building my own desktop PC, yes, I would use a NAS hard drive such as the WD Red. But I would not throw out a working WD Blue that comes with a new PC. Evaluate your needs carefully. A data storage system used in a business setting should have robust hard drives. If you are a content creator on Youtube, get at least a four bay NAS storage device and fill those drive bays with WD Reds or Seagate Ironwolves. If you surf the internet, shop online, and basically only consume social media, then a regular PC with a traditional desktop hard drive will be good enough. Highly recommended for NAS Storage systems and heavy-duty desktop use. ... show more
Reviewed in the United States on August 30, 2020 by citan-uzuki
    • Big
Capacity: 4TB Style: Red Pattern: Hard Drive
Dats
Reviewed in the United States on October 31, 2024 by SRE
    • great
Capacity: 6TB Style: Red Pattern: Hard Drive
WORKHORSE
Reviewed in the United States on October 29, 2024 by John anderson
    • Returns are risky
Capacity: 4TB Style: Red Pattern: Hard Drive
I bought 4 of these to put into a 5 bay drive. I'm using them as a RAID 5 and it's been running continuously for a couple of months now. I've had no problems. I looked into buying used Hitachi drives, but I decided it wasn't worth the time and money to buy used hard drives. You never know what you'll get. I've been very happy with these. _____________________ It's now almost 2 years since I ordered 4 of these for a RAID 5 array. One of them has failed. It's the first WD drive that I can remember failing on me, and I've been using them for years. WD has agreed to honor the warranty (they were warranted for 3 years). The problem is that the drive failed in a way that it can't be reformatted. In order to make useless any data on the hard disk platters my only option is to physically destroy them. But then WD won't honor the warranty if there is physical damage to the drive. They assured me that the disk would be reformatted. BUT, in a previous, unrelated order from Amazon in 2020, I received a "new" WD drive. In preparing that drive for use I discovered that it had already been formatted and there were several Word files on it from the former owner. Some of the files were immigration forms containing personal information. In light of this knowledge, I asked WD if I could drill holes through the platters before sending them in. The reply was a quick "No, physically damaged disks aren't covered under the warranty". My only 2 choices were to keep the disk and destroy it myself, or return it for a replacement and hope that WD follows up and re-formats it. I chose to keep it and eat the loss. I think that WD should formulate a better policy for situations like this, and that's why I've given them a 4 star rating instead of 5. ... show more
Reviewed in the United States on June 13, 2021 by tokyodj

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