WD Red 4 TB NAS Hard Drive – The next generation of hard drives for home or small office network attached storage systems. WD Red

Expanded solutions

Our formula of success has led growth of WD Red into higher capacities and expansion into new 2.5-inch solutions. We now offer a broader, more comprehensive portfolio of NAS hard drives for our customers. It is not just about NAS drives, it is REDvolutionary.

Next-generation experience

Every component, line of code, and product decision was built on our passion and determination to deliver the best NAS experience. The next generation of WD Red hard drives delivers on this promise with massive capacity and NASware 2.0, which further improves drive reliability and protects your data in the event of a power loss or disruption.

WD Red Product Features

Exclusive NASware 2.0 technology – Our exclusive technology, NASware 2.0, makes WD Red thrive in the demanding small-NAS environment. By adding WD Red to your NAS system, not only is everything more efficient and reliable, you can better protect your data investment.

3D Active Balance Plus – Our enhanced dual-plane balance control technology significantly improves the overall drive performance and reliability. Hard drives that are not properly balanced may cause excessive vibration and noise in a multi-drive system, reduce the hard drive life span, and degrade the performance over time. (EFRX models only)

The right choice – WD Red is designed specifically for home and small office NAS systems and PCs with RAID.

Enhanced reliability – Since your NAS system is always on, a highly reliable drive is essential. With a 35% MTBF improvement over standard drives, the WD Red drive with NASware 2.0 is designed for the 24×7 environment.

NAS compatibility – Advanced firmware technology built into every WD Red drive, NASware 2.0 enables seamless integration, robust data protection and optimal performance for systems operating in NAS and RAID environments.

NAS 2.0

The secret is the next-generation technology – WD’s next generation NASware 2.0 technology improves NAS storage performance by reducing common hard drive concerns in NAS systems including concerns for things like compatibility, integration, upgrade ability, reliability and cost of ownership that are experienced with a hard drive designed for desktop computers.

Energy efficient and money saving – We keep power consumption low which keeps your NAS system happy and your wallet, too.

Need help? We offer premium support – Every WD Red hard drive comes with our world-class professional support services including a premium dedicated 24/7 support line (available in English, other regional support hours vary).**

** Support outside of normal business hours is available in English only Go to http://support.wd.com for further details.

The WD advantage – WD puts our products through extensive Functional Integrity Testing (F.I.T.) prior to any product launch. On average, each new product goes through 600,000 hours of testing. WD also has a detailed Knowledge Base with more than 1,000 helpful articles. You can also call toll-free support 7 days per week in the U.S. and Canada. See the WD Support site for full details.

Upgrading your drive is easy – WD Acronis TrueImage, available as a free download on the WD Support site, enables you to copy all your data to a new drive so you don’t have to reinstall your operating system to get all the benefits of a new drive.

WD Certified

WD-certified packaging – All WD drives purchased from Amazon.com are shipped in WD-certified hard drive packaging. It is designed and fully tested to provide WD products with the highest of safety while in transit. With WD-certified packaging, you can rest assured that your WD hard drive will arrive safely, fully protected, in a non-descript, easy-open package.

Recommended use – WD Red NAS hard drives are recommended for use in home and small office 1-5 bay NAS systems. For systems that use more than 5 bays or are rack mount solutions, please consider WD datacenter hard drives.***

***WD hard drives are designed and tested for use in specific applications and environments. This ensures that your hard drive is compatible with and functions properly in your application. Our hard drives are warranted against defects in materials and workmanship in the system for which they were designed. Use in systems other than for what the hard drive was designed could result in compatibility problems that affect proper function, unrelated to material and/or workmanship defects. For best results, be sure to select the appropriate product for your application by consulting our product spec sheets on our website at www.wd.com or by calling our customer support line where we would be happy to help you through the selection process.

Ideal for: Small NAS environments 1 to 5 bay RAID configurations

Features at a glance

Next generation NAS experience with NASware 2.0 and up to a massive 4 TB capacity Most extensive NAS partner compatibility-testing list available* Expanded NAS solutions with 3.5-inch and 2.5-inch form factors Improved drive reliability and data protection in the event of a power loss or disruption Premium 24×7 support
WD Red You might also consider:

3.5-inch Internal
Comparison Chart
WD Blue
WD Green
WD Black
WD Red
WD VelociRaptor Solid performance
and reliability for everyday computing. Cool, quiet operation
for efficient eco-conscious computing. Maximum performance
for power computing. The right drive for home
or small office NAS. High-performance storage for power users. Ideal for Family and business computing. Desktop PCs, secondary storage and external drives. Photo and video editing, and maxed out gaming systems. Specifically designed and tested for small office and home office, 1-5 bay NAS systems. Performance enthusiast systems and workstations. Capacity range 80 GB – 1 TB 320 GB – 4 TB 500 GB – 4 TB 1 TB – 4 TB 250 GB – 1 TB Interface SATA 6 Gb/s
PATA 100 MB/s SATA 6 Gb/s SATA 6 Gb/s SATA 6 Gb/s SATA 6 Gb/s Form factor 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch Cache 8 MB – 64 MB 64 MB 32 MB – 64 MB 64 MB 64 MB Highest capacity Highest performance Photo/video editing Network Storage Systems

3 thoughts on “Western Digital 4 TB WD Red SATA III 5400 RPM 64 MB Cache Bulk/OEM NAS Hard Drive WD40EFRX

  1. Gary E. Peterson says:

    Regular consumer drives in RAID are accident waiting to happen Here is a quote from a review at pcper.comI’m going to let the cat out of the bag right here and now. Everyone’s home RAID is likely an accident waiting to happen. If you’re using regular consumer drives in a large array, there are some very simple (and likely) scenarios that can cause it to completely fail. I’m guilty of operating under this same false hope – I have an 8-drive array of 3TB WD Caviar Greens in a RAID-5. For those uninitiated, RAID-5 is where one drive worth of capacity is volunteered for use as parity data, which is distributed amongst all drives in the array. This trick allows for no data loss in the case where a single drive fails. The RAID controller can simply figure out the missing data by running the extra parity through the same formula that created it. This is called redundancy, but I propose that it’s not.Since I’m also guilty here with my huge array of Caviar Greens, let me also say that every few weeks I have a batch job that reads…

  2. T. Mccleary says:

    Nice hard drives for NAS or storage server with RAID. If you’re looking at this review, you’re probably in the market for some honkin’ big drives to stuff into a server or a NAS box. These Western Digital “Red” series drives are probably a total waste of money if you’re planning to put them into a regular PC. If you’re not doing a raid array of some kind, then save your money and buy the green or black series drives instead. If you’re looking to set up a raid array of some sort, these are a bargain. They aren’t the fastest drives, but they are rated to run 24×7 serving up data! Their 3 year warranty is above the current industry standard for consumer hard drives.For my home-made FreeNAS (google it!) NAS/Server, I bought 5 WD Red drives from Adorama (purchased through Amazon) and 1 drive directly from Amazon.The one drive from Amazon came very well packaged, double boxed in what looks like a WD cardboard box with a shock absorbing cradle. Very well packaged for shipment. Honestly, Amazon has been stellar for…

  3. Simon says:

    NAS Best Friend After about six months of searching for the perfect drive, I finally settled on two of these Western Digital Red 2TB WD20EFRX hard drives. I was ready to purchase HGST enterprise drives, the former Hitachi, but WD came out with these drives just in-time. I wanted to get the 3TB WD30EFRX version for my , but the price difference didn’t make that much of a sense, and 2TB drives are more than enough for a few years of my home office use. I am very happy that these drives MTBFs are rated at 1,000,000 hours, they use less power, and they are cheaper than other enterprise drives.Upon receiving, I immediately installed them in my NAS. It took about 15 minutes to install DSM 4 and begin the inspection process. I neither chose Raid 1, JBOD, or SHR, and I took some online advice and created two separate volumes, one on each disk, to have two independent file systems. In this case, you don’t…

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