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Product Information
Technical Details
| Brand | Western Digital |
| Item Weight | 490 g |
| Product Dimensions | 14.7 x 10.2 x 2.5 cm |
| Item model number | WD20EARX |
| Hard Drive Size | 2 TB |
| Hard Drive Interface | Serial ATA |
| Wattage | 5 watts |
Additional Information
| ASIN | B004VFJ9MK |
| Best Sellers Rank | 770 in Computers & Accessories (See top 100) |
| Shipping Weight | 739 g |
| Date First Available | 14 May 2011 |
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Product Description
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Internal HDD
Product Description
Storage
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Customer Reviews
Most Helpful Customer Reviews
60 of 63 people found the following review helpful
There are a few different versions of this drive with slightly different geometries (a few more or a few less sectors) and different buffer memory.
This is the OEM version which is usually supplied in an anti-static sleeve and sold in bulk to computer builders. As such, it will not have the normal retail packaging, fixing screws or the information leaflet. You can buy the screws in packs of about 100 quite cheaply or you may be able to beg a few from anyone who builds or repairs computers. Functionally, there is no other difference between OEM and retail versions. The OEM version tends to be slightly less expensive.
As it does not have the normal protection that the retail pack would normally provide and it has been known for some sellers to do rather stupid things when despatching OEM drives. If you should be a victim to one of these sellers, and purchased via Amazon, I would suggest that you return the drive for refund, purchase from a supplier with more understanding of the product and complain to Amazon!
The distinguishing feature of the Caviar Green series is that the motor speed is not constant. In normal use when writing or reading, it will operate at it maximum rotational speed but when inactive, the motor will slow. This will save a proportion of it its normal wattage. It does mean that the drive needs a moment to reach maximum speed from a lower one.
This is the OEM version which is usually supplied in an anti-static sleeve and sold in bulk to computer builders. As such, it will not have the normal retail packaging, fixing screws or the information leaflet. You can buy the screws in packs of about 100 quite cheaply or you may be able to beg a few from anyone who builds or repairs computers. Functionally, there is no other difference between OEM and retail versions. The OEM version tends to be slightly less expensive.
As it does not have the normal protection that the retail pack would normally provide and it has been known for some sellers to do rather stupid things when despatching OEM drives. If you should be a victim to one of these sellers, and purchased via Amazon, I would suggest that you return the drive for refund, purchase from a supplier with more understanding of the product and complain to Amazon!
The distinguishing feature of the Caviar Green series is that the motor speed is not constant. In normal use when writing or reading, it will operate at it maximum rotational speed but when inactive, the motor will slow. This will save a proportion of it its normal wattage. It does mean that the drive needs a moment to reach maximum speed from a lower one.
194 of 213 people found the following review helpful
By Snrub
Amazon Verified Purchase
The drive I received is WD20EARX-00AZ6B0 manufactured in Sep 2011.
It is officially the replacement for the WD Green WD20EARS. Having owned several WD20EARS, I expected this drive to be similar or perhaps better. However the drive I received is massively slower than my existing WD20EARS. Average read speed is 84MB/s according to HD Tune, compared to 106MB/s on my WD20EARS. 22MB/s, big difference!
I was also disappointed to note that it has 4x500GB platters. This is old technology, Western Digital introduced 667GB platters in late 2010. Why they would put these old components in a brand new drive with faster interface is baffling.
You should care about this because with 667GB per platter you only need 3 platters for a 2TB drive, hence they have less components and are more reliable. Also higher density platters generally have better sequential performance (assuming the rotational speed is the same). Finally, less spinning mass = less vibration and less power consumption.
*UPDATE 3/12/2012*
This drive has since died. It lasted a little over 1 year.
The warranty replacement service in the UK is very slow. It took over 3 weeks to receive a new hard-drive. The drive I received was a newer 3-platter version WD20EARX-00PASB0
It is officially the replacement for the WD Green WD20EARS. Having owned several WD20EARS, I expected this drive to be similar or perhaps better. However the drive I received is massively slower than my existing WD20EARS. Average read speed is 84MB/s according to HD Tune, compared to 106MB/s on my WD20EARS. 22MB/s, big difference!
I was also disappointed to note that it has 4x500GB platters. This is old technology, Western Digital introduced 667GB platters in late 2010. Why they would put these old components in a brand new drive with faster interface is baffling.
You should care about this because with 667GB per platter you only need 3 platters for a 2TB drive, hence they have less components and are more reliable. Also higher density platters generally have better sequential performance (assuming the rotational speed is the same). Finally, less spinning mass = less vibration and less power consumption.
*UPDATE 3/12/2012*
This drive has since died. It lasted a little over 1 year.
The warranty replacement service in the UK is very slow. It took over 3 weeks to receive a new hard-drive. The drive I received was a newer 3-platter version WD20EARX-00PASB0
12 of 13 people found the following review helpful
Amazon Verified Purchase
I bought this to update my Sky HD hard drive. It has been in the Sky box for two weeks now, performing flawlessly.
I would recommend this for any PVR use.
Update - 24 Apr 12. As stated above, still performing flawlessly. The drive is very, very quiet in operation.
I would recommend this for any PVR use.
Update - 24 Apr 12. As stated above, still performing flawlessly. The drive is very, very quiet in operation.
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4.0 out of 5 stars
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Most Recent Customer Reviews
5.0 out of 5 stars
Brilliant.
Needed a hard drive for a CCTV system, and this was recommended so went with it. Going to give plenty of recording time. Easy to fit, quick delivery and very quiet.
Published 5 days ago by Trucker
5.0 out of 5 stars
Make you should love!
I have purchase a number of drive from WD Caviar and they have never failed me. Still have a drive I purchased in 2000 and works perfectly! Great choice for home server!
Published 12 days ago by Michal Florek
4.0 out of 5 stars
Nice, quiet drive
The drive is quiet, not too warm, and it worked first time. Not more you can expect really in a drive.
Published 14 days ago by Peter Lawrey
5.0 out of 5 stars
Perfect!!!
Wanted another drive to go with the same one as I ordered so i can upgrade my Netgear readynas DUO from 1TB drives to 2TB drives. Now i have a matching pair, i can do it. Read more
Published 23 days ago by MR R A A PEACH
4.0 out of 5 stars
A warehouse for data, for the price of a tent
When my old system died - due to dust - I thought it was time to upgrade, and this hard drive fitted my budget and space requirements for the new one. Read more
Published 25 days ago by seldom-write
1.0 out of 5 stars
Dead on arrival
I was really dissapointed with this item. After waiting several days it arrived and did not work. It was faulty and reading other reviews I thought Id take a chance but it did not... Read more
Published 29 days ago by Dilly
5.0 out of 5 stars
V.Good
It's a 2TB SATA Hard Disk at a really good price what is not to love about it.
AL (Dublin)
AL (Dublin)
Published 29 days ago by Alan Kavanagh
5.0 out of 5 stars
Hard drives for my NAS
Bought two of these for d-link NAS. Used it in raid mode and works great. A big noisy when It starts but afterwards very quiet.
Published 1 month ago by R Wadher
4.0 out of 5 stars
A good harddrive to the right price.
I bought this hard drive for my NAS server, and it is doing the job ok, Good size for the right price.
Published 1 month ago by Flodhest
4.0 out of 5 stars
Had a the product for a month without any problems
Works well in the Netgear Nas i purchased..never had a problem with a WD product would recommend. . . .
Published 1 month ago by Da
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