Here are all the models currently in the database for this WD drive family. Entries are sorted into sections based on platter density.

Some tips:

Drives using odd sizes are sorted into whatever size category that's closest. For example, drives using 150GB platters are sorted into the 160GB/platter section, and drives using 200GB platters are sorted into the 250GB/platter section.
The total capacity of the drive is shown beside each drive model.
A platter-head ratio is shown next to the total capacity tag in brackets. For example, a drive with a (1/2) ratio has one disk and two read/write heads. Drives that leave some amount of their platters unused in order to fit into a certain capacity (such as a 320GB drive based on a 500GB platter and two heads, which would have ~180GB space unusable) are marked as [short-stroked] next to the platter-head ratio accordingly.
Any special features (increased rotational speed, interface types, unusual platter designs and stuff like that) are noted where necessary.


This section was last updated on 08/18/2015.

Note: These drives, being designed for low power usage, automatically park their read/write heads when idle for a few seconds, much like laptop drives. For those who find this quirk annoying, here is a decent tutorial with instructions on how to turn the head parking off entirely.




250GB/platter Section (all drives under here use platters that can hold 250GB of data.)

Caviar GP (5400RPM, 8MB cache, SATA-300 interface)

WD3200AAVS-xxZTBx 320GB (2/3 [short-stroked])
WD5000AAVS-xxZTBx 500GB (2/4)


Caviar GP (5400RPM, 16MB cache, SATA-300 interface)

WD5000AACS-xxZUBx 500GB (2/4)
WD7500AACS-xxZJBx 750GB (3/6)
WD10EACS-xxZJBx 1TB (4/8)



320-375GB/platter Section (all drives under here use platters that can hold 320-375GB of data.)

Caviar Green (5400RPM, 8MB cache, SATA-300 interface)

WD5000AAVS-xxG9Bx 500GB (2/4 [short-stroked])
WD6400AAVS-xxG9Bx 640GB (2/4)
WD7500AAVS-xxD7Bx 750GB (3/5 [short-stroked])
WD10EAVS-xxD7Bx 1TB (3/6)


Caviar Green/GP (5400RPM, 16MB cache, SATA-300 interface)

WD5000AACS-xxG8Bx 500GB (2/4 [short-stroked])
WD6400AACS-xxG8Bx 640GB (2/4)
WD7500AACS-xxD6Bx 750GB (3/5 [short-stroked])
WD10EACS-xxD6Bx 1TB (3/6)


Caviar Green (5400RPM, 32MB cache, SATA-300 interface)

WD5000AADS-xxL4Bx 500GB (2/4 [short-stroked])
WD7500AADS-xxL5Bx 750GB (3/5 [short-stroked])
WD8088AADS-xxL5Bx 808.8GB (3/6 [short-stroked])*
WD10EADS-xxL5Bx 1TB (3/6)
*Note: What an unusual capacity this drive has. WD sold these as "lucky" drives in China because of the amount of 8s making up the capacity, though it seems some people (not necessarily in China) have also gotten the drives sent to them as replacements for RMA'd units of similar capacity.



500GB/platter Section (all drives under here use platters that can hold 500GB of data.)

Caviar Green (5400RPM, 8MB cache, SATA-300 interface)

WD5000AAVS-xxN7Bx 500GB (1/2)


Caviar Green (5400RPM, 32MB cache, SATA-300 interface)

WD5000AADS-xxS9Bx 500GB (1/2)
WD6400AADS-xxM2Bx 640GB (2/3 [short-stroked])
WD7500AADS-xxM2Bx 750GB (2/3)
WD10EADS-xxP8Bx/xxM2Bx 1TB (2/4)
WD15EADS-xxP8Bx/xxR2Bx 1.5TB (3/6)
WD15EADS-xxR6Bx/xxS2Bx/xxW4Bx/xxH7Bx 1.5TB (4/7 [short-stroked])
WD20EADS-xxR6Bx/xxS2Bx/xxW4Bx 2TB (4/8)


Caviar Green (5400RPM, 32MB cache, SATA-300 interface, Advanced Format)

WD5000AADS-11M2B2 500GB (1/2)
WD6400AADS-11M2B2 640GB (2/3 [short-stroked])
WD7500AADS-11M2B2 750GB (2/3)
WD10EADS-11M2B2 1TB (2/4)



Caviar Green (5400RPM, 64MB cache, SATA-300 interface, Advanced Format)

WD5000AARS-xxY5Bx/xx3BBx 500GB (1/2)
WD6400AARS-xxY5Bx/xx3BBx 640GB (2/3 [short-stroked])
WD7500AARS-xxY5Bx/xx3BBx 750GB (2/3)
WD8000AARS-xxY5Bx 800GB (2/4 [short-stroked])
WD10EARS-xxY5Bx/xx3BBx 1TB (2/4)
WD15EARS-xxS8Bx/00J2GB0/xxZ5Bx 1.5TB (3/6)*
WD20EARS-xxS8Bx/00J2GB0/42S0XB0 2TB (4/8)*
*Note: I have noticed something a little odd with the xxS8Bx and 00J2GB0 revision WD15EARS and WD20EARS. They share the same quad-platter casing (hinting four platters inside), yet supposedly the WD15EARS uses one less platter, as both drives have near identical HD Tune read results (from the screenshots that I have seen). I suppose WD just decided to use the quad-platter casing to house this three-platter drive, for whatever reason. The WD15EARS-xxZ5Bx models, in contrast, use the three-platter casing.


Caviar Green (5400RPM, 32MB cache, SATA-600 interface)

WD10EADX-xxTDHBx 1TB (2/4)


Caviar Green (5400RPM, 64MB cache, SATA-600 interface, Advanced Format)

WD15EARX-xxZUDBx 1.5TB (3/6)
WD20EARX-xxZUDBx 2TB (4/8)



640-750GB/platter Section (all drives under here use platters that can hold 640-750GB of data.)

Caviar Green (5400RPM, 16MB cache, SATA-300 interface, Advanced Format)

WD15EACS-11BHUB0 1.5TB (3/5 [short-stroked])
WD20EACS-11BHUB0 2TB (3/6)


Caviar Green (5400RPM, 64MB cache, SATA-300 interface, Advanced Format)

WD10EARS-xxMVWBx 1TB (2/3)
WD15EARS-xxMVWBx 1.5TB (3/5 [short-stroked])
WD20EARS-xxMVWBx 2TB (3/6)
WD20EARS-xxJ99Bx 2TB (4/7 [short-stroked])
WD25EZRS-xxJ99Bx 2.5TB (4/7)
WD30EZRS-xxJ99Bx 3TB (4/8)


Caviar Green (5400RPM, 64MB cache, SATA-600 interface, Advanced Format)

WD7500AARX-xxN0YBx 750GB (2/3 [short-stroked])
WD10EARX-xxN0YBx 1TB (2/3)
WD15EARX-xxPASBx 1.5TB (3/5 [short-stroked])
WD20EARX-xxPASBx 2TB (3/6)
WD20EARX-xxMMMBx/xxAZ6Bx 2TB (3/6?)*
WD25EZRX-xxMMMBx/xxAZ6Bx 2.5TB (4/7 [short-stroked])
WD30EZRX-xxMMMBx/xxAZ6Bx 3TB (4/8)
Like some WD15EARS and WD20EARS models listed earlier, there appears to be a version of the WD20EARX that shares the WD30EZRX/WD25EZRX units' four-platter chassis and identifier code (xxMMMBx). It's unclear whether these models retain the 3/6 configuration of the WD20EARX-xxPASBx models, or if they use four short-stroked or lower density platters.


Caviar Green (5400RPM, 64MB cache, SATA-600 interface)

WD20EARX-xx8FBx 2TB (3/6)



1TB/platter Section (all drives under here use platters that can hold 1TB of data each.)

Caviar Green (5400RPM, 32MB cache, SATA-600 interface, Advanced Format)

WD3200AZDX-xxSC2Bx 320GB (1/1 [short-stroked])
WD5000AZDX-xxSC2Bx 500GB (1/1)


Caviar Green (5400RPM, 64MB cache, SATA-600 interface, Advanced Format)

WD3200AZRX-xxA8LBx 320GB (1/1 [short-stroked])
WD5000AZRX-xxA8LBx 500GB (1/1)
WD7500AZRX-xxA8LBx 750GB (1/2 [short-stroked])
WD10EZRX-xxA8LBx 1TB (1/2)
WD20EZRX-xxDC0Bx/xxD8PBx 2TB (2/4)/(3/6 [667+GB/platter])*
WD30EZRX-xxDC0Bx/xxD8PBx/00SPEB0 3TB (3/6)**
WD40EZRX-xxSPEBx 4TB (4/8)
WD50EZRX-xxMVLBx 5TB (5/10)
*Note: Just like the new Seagate ST2000DM001 2TB drives, two different platter configurations of the 2TB WD20EZRX appear to be floating around, with no easy way to tell the difference other than weight (a 640~ gram weight seems to signal three platters). Of course, the dual-platter version is the one to get.
**Note: there's some confusion surrounding the WD30EZRX with 00SPEB0 model code. It uses WD's four-platter casing, unlike the other 1TB/platter WD30EZRX models, and looks physically identical to the WD40EZRX-xxSPEBx models. It's unclear whether or not it incorporates three 1TB platters, or four 750GB platters. Buyer beware!



1.2TB/platter Section (all drives under here use platters that can hold 1.2TB of data each.)

Caviar Green (5400RPM, 64MB cache, SATA-600 interface, Advanced Format)

WD60EZRX-xxMVLBx 6TB (5/10)



Posted by RML527 at 1:38 PM
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