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WD Red 2 TB NAS Hard Drive: 3.5 Inch, SATA III, 64 MB Cache - WD20EFRX

| 44 answered questions

List Price: $179.99
Price: $94.99 & FREE Shipping. Details
You Save: $85.00 (47%)
In Stock.
Ships from and sold by Amazon.com in easy-to-open packaging. Gift-wrap available.
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2TB
  • Capacity: 2 TB
  • Rotational Speed (RPM): IntelliPower
  • Cache: 64 MB
  • Interface: SATA3
  • Data Transfer Rate: 6 Gb/s Buffer to Host (max); 145 MB/s Host to/from drive (typical)
  • Form Factor: 3.5 inch
  • Read/Write:4.4 Watts
  • Sleep: 0.6 Watts
75 new from $93.60 4 used from $76.00 3 refurbished from $91.99
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Frequently Bought Together

WD Red 2 TB NAS Hard Drive: 3.5 Inch, SATA III, 64 MB Cache - WD20EFRX + Synology DiskStation 2-Bay (Diskless) Network Attached Storage (DS213j)
Price for both: $287.51

Buy the selected items together


Special Offers and Product Promotions

Size: 2TB
  • Buy Used and Save: Buy a Used "WD Red 2 TB NAS Hard Drive: 3.5 Inch, SATA III, 64...” from Amazon Warehouse Deals and save 57% off the $179.99 list price. Product is eligible for Amazon's 30-day returns policy and Prime or FREE Shipping. See all Used offers from Amazon Warehouse Deals.
  • Buy Refurbished and Save: Buy a Refurbished "WD Red 2 TB NAS Hard Drive: 3.5 Inch, SATA III, 64..." and save 48% off the $179.99 list price. Buy with confidence as the condition of this item and its timely delivery are guaranteed under the "Amazon A-to-z Guarantee". See all Refurbished offers.

Product Details

Size: 2TB
  • Product Dimensions: 4 x 1 x 5.8 inches ; 1.3 pounds
  • Shipping Weight: 1.4 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B008JJLZ7G
  • Item model number: WD20EFRX
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (1,041 customer reviews)
  • Amazon Best Sellers Rank:
  • Date first available at Amazon.com: July 11, 2012

Product Description

Size: 2TB

From the Manufacturer

WD Red – THE right hard drive for home and small office NAS systems.
NAS compatibility.
NASware - WD's advanced firmware technology built into every WD Red drive, enables seamless integration, robust data protection and optimal performance for systems operating in NAS and RAID environments.
WD Red - NAS compatibility.
Energy efficient and money saving.
Reduce your electricity bill and carbon footprint with WD Red drives. Innovative technology reduces power consumption and lowers the operating temperature, resulting in a more reliable and affordable solution for always-on, 24x7 NAS environments.
WD Red - Energy efficient.
Dedicated Premium Support.
We keep our dedicated premium support lines open 24x7 with experts who have answers to your NAS questions.
WD Red - Premium support.
WD Red

Your data is vital. Don't compromise on your storage solution.
WD Red hard drives are designed specifically for home and small office NAS systems. WD's exclusive NASware technology enables seamless integration, robust data protection and optimal performance for systems operating in NAS and RAID environments.

Compatibility - WD's exclusive NASware technology, built into every WD Red hard drive.
NASware improves NAS storage by reducing common hard drive concerns in NAS systems including compatibility, integration, ability to upgrade, reliability and cost of ownership.

Error recovery controls.
Desktop drives are not traditionally designed for RAID environments and have controls that prevent the RAID controller from assisting in the event of an error which can cause the hard drive to drop off the RAID after a period of time. Rebuilding the system often requires several hours and can have a significant impact on downtime and productivity.

Noise and vibration.
Typically designed for single drive applications, average desktop drives are not optimized for multi-drive systems, which have higher noise and vibration levels. When these drives are added to a NAS, the additional vibration can reduce the reliability and life span of the drive. WD Red drives feature 3D Active Balance Plus which minimizes vibration and noise.

Reliability.
Most desktop drives are not designed for the high operation temperatures or the 24x7 operating environments making them less reliable when used in a NAS system.

NAS storage

Desktop hard drives are designed for desktop computers.
Desktop hard drives are designed for optimum performance and reliability in a desktop personal computer. Although they are an affordable alternative to enterprise-class drives, desktop drives have a higher level of risk for potential data loss and failure in an always-on RAID configured NAS system. Specific issues that you may experience using desktop drives in a NAS or RAID environment include:

Compatibility - Desktop hard drives are not always tested for compatibility in NAS and can present problems during integration.

Beyond desktop with NASware
WD Red drives include WD's exclusive NASware technology that addresses many of the challenges a traditional desktop hard drive has in a NAS system. WD works directly with our partners to test compatibility and reduce our customer's guess work as to which drive is right for their NAS system. Designed to deliver a better customer experience in small NAS systems, this innovative firmware finely balances the most important attributes of performance, power, and reliability in multiple drive environments. The unique algorithms in NASware optimize power and performance without compromising on the attributes that NAS-system owners value.

Save power and money.
NASware optimizes power use resulting in significant power savings and lower hard drive operating temperatures. This improves the overall reliability and performance of the drive and reduces the NAS cost of ownership.

Intelligent error recovery.
With built in intelligent error recovery controls, NASware also prevents hard drives from being dropped off the RAID due to extended error recovery. This provides more availability and less down time rebuilding the RAID.

Important Features for System Integrators:

In addition to features that make WD Red drives perfect for populating or upgrading NAS systems, NASware brings features that system integrators need when building specialized NAS systems.

  • Streaming support - NASware provides built-in compatibility with the ATA Streaming Feature Set which is important for AV storage applications such as Windows Media Center.

  • SMART Command Transport (SCT) support - NASware allows monitoring and measuring of drive performance via the SMART command set. SMART can return data like thermal profiles, drive access statistics and more. NASware also delivers temperature accuracy within 1°C.

  • Power management support - Enables optimized power usage within the NAS system.

  • BIC Performance - Optimized seek to provide BIC performance while reducing the power and acoustics

Ideal for

  • 1-5 bay home or small office/home office NAS

Features at a glance

  • 1 TB, 2 TB or 3 TB capacity
  • NASware for seamless integration and error recovery controls
  • Energy efficient
  • 3D Active Balance Plus
  • SATA 6 Gb/s
  • 24x7 reliability

NASware

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 – 3 TB
500 GB – 2 TB
1 TB – 3 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

Product Description

Western Digital Red WD20EFRX 2TB SATA3 IntelliPower 64MB Hard Drive (3.5 inch) and 3 Year Limited Warranty.

Customer Questions & Answers

Customer Reviews

So far so good it seems to be working great.
rbhawks22
I have been using a pair of WD Red drives in RAID 1 configuration in a Synology NAS for a month now, and they perform flawlessly.
HariSeldon
I have used many of the hard drive brands over the years and I have always had the best luck with Western Digital drives.
O. Riday

Most Helpful Customer Reviews

994 of 1,083 people found the following review helpful By Gary E. Peterson on August 20, 2012
Size Name: 3TB Verified Purchase
Here is a quote from a review at pcper.com

I'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 *all* data from that array. Why on earth would I need to occasionally and repeatedly read 21TB of data from something that should already be super reliable? Here's the failure scenario for what might happen to me if I didn't:
* Array starts off operating as normal, but drive 3 has a bad sector that cropped up a few months back. This has gone unnoticed because the bad sector was part of a rarely accessed file.
* During operation, drive 1 encounters a new bad sector.
* Since drive 1 is a consumer drive it goes into a retry loop, repeatedly attempting to read and correct the bad sector.
* The RAID controller exceeds its timeout threshold waiting on drive 1 and marks it offline.
* Array is now in degraded status with drive 1 marked as failed.
* User replaces drive 1.
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95 of 102 people found the following review helpful By T. Mccleary on November 29, 2012
Size Name: 3TB Verified Purchase
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 24x7 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 packaging boxes for shipment.

The 5 hard drives from Adorama came in a big box which 'clunked' when it was tilted. Opening the box revealed some big plastic pillow air strips, and 5 loose smaller boxes. Inside each of the smaller boxes was a few pillows and a factory bagged hard drive. There were not enough pillows in each box to securely cushion the hard drives against rattling around, so there's a high likelihood of damage in shipment. BAD SHIPPERS! NO DONUT!

Anyway, getting on to the performance of the drives... I'm running 6 drives in a ZFS RaidZ2 array. They are all controlled using an IBM M1015 PCIE 8x SATA 3 controller which has been flashed to be an HBA providing JBOD to the ZFS OS. That's a lotta acronyms! The speed of the array is quite fast...
Read more ›
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138 of 159 people found the following review helpful By Simon on August 18, 2012
Size Name: 2TB Verified Purchase
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 Synology DS212 NAS, 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 have to worry about rebuilding disk arrays if any drives fail, and you always have a backup present. I was planning on using Folder Sync feature to sync all folders from Disk 1 to Disk 2 every other hour, but I found out this feature only works on two independent Synology Disk Stations; however, you can use automated backup feature to backup data from Disk 1 into Disk 2, and it produces about the same result as Folder Sync does, and it gives you a few more options for backing up system and application files as well.

Synology volume creation took about 7 hours for each drive with automatic bad sector reallocation feature. I later tested each drive with S.M.A.R.
Read more ›
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