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67 of 71 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.
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203 of 222 people found the following review helpful
on 9 November 2011
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
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11 of 12 people found the following review helpful
on 23 September 2011
I have just reviewed a USB 3.0 docking station with USB card reader and my review is in relation of this HDD with that utility. I have had for a couple of years now, an eSATA docking station so that I could use drives without the need for opening the PC case. It was OK but firmware issues meant I had to reboot the PC if I wanted to change the disk, hot swapping wouldn't work.

With the USB 3.0 one, this has changed and opened up horizons for out-of-caddy drives. Enough of the prequel. I already have one of these drives (WD20EAX, so very slightly different). This I use for backup of my home-studio which generates something up to 100GB of data per song (96kHz) where a single instrument in one track easily surpasses 200-300 MB. This data is precious and irreplaceable as you can imagine, so reliability is the word. The studio has the performance scratch disks so what I needed was efficient, dependability. These drives deliver that in abundance. Low power and on the USB 3.0 docker, backups churn away quietly at a respectable 100 MBpS which means I'm not waiting around forever. I have a couple now so take one off-site to ensure that if there is a fire or some other disaster, I have backups to a few days ago secure in another location.

I wouldn't use one of these for a scratch disk for video or audio work but they have a huge thumbs up for storage & retrieval. 10/10 WD.
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5 of 5 people found the following review helpful
on 15 September 2011
This is the second drive I have bought as the first one works very good, data transfer is fast and since I use a H D D docking station so that it essentially act like an external hard drive.So saying that I would recommend it as an internal drive as well.
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4 of 4 people found the following review helpful
on 14 June 2012
Purchased over 8 months ago and still performing well. Relatively silent and handles all the work i throw at it. Not using as a boot drive but as storage it works a treat.
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2 of 2 people found the following review helpful
on 28 January 2013
I would have given 5 stars for this if it were not for the fact that the packaging was nothing more than cardboard inside another cardboard box.

To be a little clearer, the HDD was wrapped in one smaller-than-A4 piece of bubble wrap, put in a cardboard box and then placed in another bigger box with a nest of brown paper put around the edge. Not the best for a hard drive to be shipped in.

As a result, I felt it necessary to run diagnostics on the drive to satisfy my concern that something could be wrong.

I'm not going to comment on the speed of the drive, as I am going to use this in a RAID 1 array for backup purposes.

Otherwise, the item itself is as described and shipping was quick.
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1 of 1 people found the following review helpful
on 6 December 2012
All I can say is that Western Digital have made a great HD and at such a brilliant price it is unbeatable. It started to work the moment I installed it in my NETGEAR ReadyNAS Duo V2, it's quiet and, as far as I can tell, running cool at a temp of 31 degrees C within my NAS.

I would definitely recommend this drive to anyone who wanted to install it into a home file server or a network attached storage device.

The one problem of concern I have was that the HD, though working properly, was not protectively packed well enough. The HD was in an appropriately sized box and that box was packed within another bigger package which contained two more ordered items. However, I feel that the amount of bubble wrapping used to protect the HD was inadequate, someone skimped on the wrapping which in turn put the HD at risk and so could still be shaken within its smaller box.

I have bought other OEM HDs before, from other suppliers, and their bubble wrapping was more than adequate.

I plan to buy another 2TB Caviar Green HD but I don't think I'll take the chance of the disk being damaged in transit by using Amazon's current supplier again.

UPDATE - 03 January 2013 --------------------------------

I took the chance and purchased another 2TB Caviar Green HD from Amazon, despite my reservations noted above, and for the knock down price of £70. And I must say that the packaging of this product was excellent, which is a far cry from how the first disk was delivered.

The packaging contained an outer box, filled with enough packing paper to absorb any bumps or rough handling in transition. The inner box, containing the HD, held the disk so firmly that it could not move about. And finally, the anti-static bag containing the HD had an anti-moisture sachet in it.

All in all, this is the best packed HD I have ever had from a supplier, along with the quality of the Caviar Green and the killer retail price of £70.00 this is now a 5 star product for packaging and for the WD 2TB Caviar Green SATA HD.
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16 of 18 people found the following review helpful
on 27 September 2012
I bought 2 of these drives from Amazon in June 2012 and BOTH had failed by September! I have bought dozens of drives in my time and I have had drives fail before, but not this quickly and not 2 at a time. Looking online I find that I'm not the only one that this has happened to. They were being used purely as storage, my OS is on an SSD. Look elsewhere for your internal HDDs, you have been warned.
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16 of 18 people found the following review helpful
on 19 March 2012
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.

Update 2: 21 August 14. Still chugging along perfectly!
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1 of 1 people found the following review helpful
on 12 November 2012
I decided to pay a few pence extra and get the one sold and shipped directly by Amazon, in hopes that it would avoid the issues I've had with some of the marketplace sellers on these drives - such as receiving a Recertified drive rather than a new one, and having to go through the RMA process and ship it back. I figured, Amazon themselves would be less likely to pull such shenanigans, and in the case they did, surely the RMA process would be easier.

So all is well, the drive seems fine, has had no problems in my ReadyNAS Duo so far after replacing a faulty drive and restriping the X-Raid onto this drive. All drive tests passed fine. However, one slight concern regarding, ironically, Amazon shipping...

Here's the packaging feedback I left for Amazon:

The hard drive arrived in the typical amazon economy pack, the same one you get when you order a book. It was just inside the box, in a static bag, with no other foam/bubble-wrap/air-pack or other protective material. On the one hand it was securely packed, and could not move around inside the packaging. But on the other hand I would have liked to see it packed with something a bit more cushioned and protective. I've never received a hard drive in this way and I was a bit shocked. Anyway the drive tested out fine so I guess we got lucky.
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