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Western Digital Caviar Green 2 TB Desktop Hard Drive WD20EARS

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Available from these sellers.
2 TB
  • WD Caviar Green hard drives reduce power consumption by up to 40%
  • A fine-tuned balance of spin speed, transfer rate and caching algorithms designed to deliver both significant power savings
  • IntelliSeek - Calculates optimum seek speeds to lower power consumption, noise, and vibration.
  • 2TB capacity holds up to 400,000 digital photos, 500,000 MP3 files, and 240 hours of HD video.
  • Ships in Certified Frustration-Free Packaging
6 new from $95.00 4 used from $73.00 2 refurbished from $75.00
Is this a gift? Please note that this item ships in its own packaging and cannot be gift-wrapped or concealed.

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Special Offers and Product Promotions

Size: 2 TB
  • Buy Used and Save: Buy a Used "Western Digital Caviar Green 2 TB Desktop Hard Dri...” from Amazon Warehouse Deals and save 47% off the $139.99 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 "Western Digital Caviar Green 2 TB Desktop Hard Dri..." and save 46% off the $139.99 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.

Technical Details

Size: 2 TB
  • Brand Name: Western Digital
  • Model: WD20EARS
  • Hard Disk Size: 2000 GB
  • Warranty: 2
  • Hard Disk Rotational Speed: 5400 RPM
  See more technical details

Product Details

Size: 2 TB
  • Product Dimensions: 5.8 x 4 x 1 inches ; 11 pounds
  • Shipping Weight: 1.6 pounds
  • Shipping: Currently, item can be shipped only within the U.S.
  • ASIN: B002ZCXK0I
  • Item model number: WD20EARS
  • Average Customer Review: 3.9 out of 5 stars  See all reviews (715 customer reviews)
  • Date first available at Amazon.com: October 2, 2003

Product Description

Size: 2 TB

From the Manufacturer

WD Caviar Green Hard Drives – Cool, quiet.

The WD Caviar Green desktop SATA hard drives give you the space you need to hold enormous amounts of software, photos and videos. These drives make it possible to build high capacity, cool and quiet systems, while delivering the right balance of system performance and energy conservation.

Why you should choose WD Caviar Green:

WD Caviar Green hard drives provide high capacity storage while using up to 40% less power than traditional 7200 RPM drives. In addition, these hard drives are quieter and cooler than traditional 7200 RPM drives.

Cool and quiet.
WD GreenPower Technology yields lower operating temperatures for increased reliability and low acoustics perfect for ultra-quiet PCs and external drives.
Cool and quiet
Reduced power consumption.
WD's IntelliPower technology delivers both significant power savings and solid performance. Additionally, WD Caviar Green drives consume less current during startup allowing lower peak loads on systems as they are booted.
Reduced power consumption
Massive capacity.
Store up to 2 TB of photos, videos, music and files on a single drive.
Massive capacity
Features at a glance

  • 2 TB of desktop storage
  • Reduced power consumption
  • SATA 3 Gb/s interface
  • WD GreenPower Technology
  • 2-year limited warranty
WD caviar Green
Ideal for:
  • Adding lots of storage in desktop PCs or external drives and NAS devices
  • Adding extra storage space for photos, videos and music
  • Environmentally-conscious individuals seeking reduced power consumption

SATA 3 Gb/s interface - The industry standard and most common interface.

NoTouch ramp load technology - The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit.

IntelliSeek - Calculates optimum seek speeds to lower power consumption, noise and vibration.


Advanced Format (AF) - Technology being adopted by WD and other drive manufacturers to continue growing hard drive capacities.

New drives featuring AF are optimized for operation with Windows 7, Windows Vista and Mac OS X Tiger, Leopard, Snow Leopard. For older operating systems such as Windows XP, users must run the free WD Align software utility to achieve the full performance of the drive.

Desktop / Consumer RAID environments - WD Caviar Green Hard Drives are tested and recommended for use in consumer-type RAID applications. (RAID-0 / RAID-1)*

*Business Critical RAID Environments – WD Caviar Green Hard Drives are not recommended for and are not warranted for use in RAID environments utilizing Enterprise HBAs and/or expanders and in multi-bay chassis, as they are not designed for, nor tested in, these specific types of RAID applications. For all Business Critical RAID applications, please consider WD's Enterprise Hard Drives that are specifically designed with RAID-specific, time-limited error recovery (TLER), are tested extensively in 24x7 RAID applications, and include features like enhanced RAFF technology and thermal extended burn-in testing.

Leading the way to green hard drives - WD led the industry in creating a new category of hard drives that use less power and help reduce the world's energy demands one computer user at a time. These drives consume significantly less power than standard drives spinning at 7200 RPM. All WD Caviar Green drives are lead and halogen free, resulting in less pollutants getting into our environment. Beyond the product level, WD's green initiative goes even further focusing on recycling and improving the cleanliness of the air, water and land in the locations surrounding WD facilities.

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. Note: Bare drive does not include any cables or mounting hardware.

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.

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, non-descript, easy-open package.

Works with Windows 7/Vista/XP/2000, Mac and Linux operating systems.

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3.5-inch Internal
Comparison Chart
WD Caviar Blue WD Caviar Green WD Caviar Black WD VelociRaptor
Value and reliability
for every day computing.
Cool, quiet.
Maximum performance
for power computing.
The fastest SATA hard drive
on the planet.
Ideal for
Family and business computing.
Desktop PCs, external drives and NAS devices.
Photo and video editing, and
maxed out gaming systems.
Performance enthusiast
systems and workstations.
Capacity range
80 GB – 1 TB
320 GB – 3 TB
500 GB – 2 TB
150 GB – 600 GB
SATA 6 Gb/s
SATA 3 Gb/s
PATA 100 MB/s
SATA 6 Gb/s
SATA 3 Gb/s
SATA 6 Gb/s
SATA 3 Gb/s
SATA 6 Gb/s
Form Factor
8 MB – 32 MB
16 MB – 64 MB
32 MB – 64 MB
32 MB
Limited Warranty
Highest capacity
Highest performance
Photo Video editing

Product Description

WD Advanced Format technology increases media format efficiency, thus enabling larger drive capacities. WD Advanced Format drives are specifically optimized for Mac and the latest Windows operating systems such as Windows Vista and Windows 7. WD Advanced Format drives work with legacy operating systems such as Windows XP but require the use of the free WD Align software available on www.wdc.com/advformat.Available in capacities up to 2 TB, WD Caviar Green SATA hard drives reduce power consumption by up to 40% and offer best-in-class acoustics and operating temperature. Based on WD's exclusive GreenPower technology, these drives are designed to deliver power savings as the primary attribute. As hard drive capacities increase, the power required to run those drives increases as well. WD Caviar Green drives make it possible for energy-conscious customers to build systems with higher capacities and the right balance of system performance, ensured reliability, and energy conservation. They are ideal for PCs, external storage and other devices that require lower power consumption and cool, quiet operation.

Customer Questions & Answers

Customer Reviews

It is quiet, runs cool to the touch, and it is fast.
Welly WU
I know a DVR can be picky on the drive it gets but if you do some research you will see other people are having problems as well.
D Smoke
These drives work great for the set up, and are very easy to add.

Most Helpful Customer Reviews

537 of 565 people found the following review helpful By RetiredEE on August 3, 2010
Size Name: 2 TB Verified Purchase
I have bought a LOT of the 2TB WD Caviar drives. I have had excellent results with them on my iMac. I use them primarily for data storage where fast data retrieval is not a consideration. I'm more concerned with plugging them into these USB-based drive docks when I need the data. However, I'm also interested in them from an electrical perspective, just because ... well, just because I'm interested in them. Over the years I have worked my way up the ladder of hard drive storage capacities. Like many of you, I've been rather appalled at how hot these older models would get. I swear, you could fry an egg on some of them. I never felt comfortable with their longevity, fearing that they would most likely burn themselves up. Fortunately, none did.

When the Caviar Green product line came out (1TB was when I first took notice), I was quite intrigued at the claimed power reduction. In electronics, heat is the main enemy of components. Usually every 10 degree C rise in temperature translates into a halving of component life. The Caviar brand looked like a way to get a much more reliable drive if the power reduction numbers actually panned out.

I took one of the drives in to work where I have fancy test gear at my disposal. In particular, I have some very good Tektronix current probes that let me measure DC and AC currents. I built a little cable that let me get to the +12V and +5V lines so that I could clamp my current probes around the wires to measure current consumption. I connected the two power leads to power supplies so that I could also vary the two voltages. In this fashion, I can accurately see and measure power consumption of the drive as I exercise the drive.
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73 of 79 people found the following review helpful By Mr Scrith on May 7, 2010
Size Name: 1.5 TB Verified Purchase
I purchased these drives to create a RAID 5 setup for home storage, turns out these drives have terrible characteristics for RAID because of the "Green" firmware. If you are using these drives as stand-alone drives everything should be fine, if you are looking to put together a RAID (software or hardware) look somewhere else, there are plenty of consumer-grade drives that work well with RAID.
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87 of 96 people found the following review helpful By J. Vaughn on May 17, 2010
Size Name: 2 TB Verified Purchase
I've bought six of these. They are quiet. After many hours, they are barely warm to the touch. Every other hard-disk drive made can be used as a space heater.

They are a bit slower, adding about 33% to the seek time, but nothing noticeable to data reads. This only matters when reading lots of small files like during boot-up. I use an Intel SSD for my main drive and one of these for data. It is the best of both worlds.

I've found that most computers recognize these drives but must be told to mount them, format them, and assign them a drive letter. (This only needs to be done once.) This is a problem with large drives, not with these specifically. For true ease of setup, get a 1TB drive.
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21 of 21 people found the following review helpful By Gene Montgomery on December 20, 2010
Size Name: 2 TB Verified Purchase
I bought two of these to go into my Netgear ReadyNAS Duo (I immediately updated the firmware on the ReadyNAS to support the drives, so that wasn't an issue). The drives were quiet, but I noticed a faint clicking sound on occasion. After a bit of research, I discovered that the sound was from the heads "parking" frequently. After only three days of use, drive #1 had done this over 4,000 times ("Load Cycle Count" per SMART data), and the drives are rated for a lifetime of 300,000. I ran WD's "wdidle3" from their Web site, and the parking has stopped on both drives.

Other than the needless head parking, these are nice drives, especially for only $89.99 each (when I ordered them). I recommend these drives, but make sure you put wdidle3.exe on a bootable flash drive with DOS on it (Google for more information) and run "wdidle3 /D" to disable the head parking. If you would like to conserve some energy, let your OS spin the drive(s) down.
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343 of 423 people found the following review helpful By SCF on June 2, 2010
Size Name: 2 TB Verified Purchase
I'm a software engineer and I have enormous archives of data. I currently have more than fifty drives on the shelf behind me, totaling about 20 terabytes of data.

For the last two years, I've used almost exclusively the Western Digital Green drives. Perhaps a half dozen each of the 750gb, 1tb, 1.5tb drives. They've been fantastic for data storage.

When the 2tb version reached the right price point, I ordered a couple of those. I was aware of the issues with sector size, detection, and formatting in Windows, but I use Solaris, Linux, and OSX almost exclusively. These drives were being used in OSX, which does have support for these drives.

However, when I plugged both drives in, I had a hell of a time formatting them through the Disk Utility and had to do it manually on the command line.

The real problems began after the drives were formatted and I had moved a ton of data to them. On one of the drives, I renamed a folder which contained about 1.25tb of data. Instantly, the folder disappeared and the drive appeared empty. That's right. I renamed the folder all my data was in and that magically deleted all my content.

Upon closer inspection, the data was still there - it just didn't appear in the file system. Thankfully, I was able to recover the data with some command-line-fu. I then reformatted the drive and gave it a torture test until the time I had to get these back in the box to return to Amazon before the refund period expired. I found boh of the drives to be questionable, but the one drive above to be particularly bad. It could have been just a bad drive or it could be a consistent problem across all of the 2tb WD Greens. My test sample (two drives) isn't adequate to extrapolate.
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