Please read: Western Digital uses a unique method to differentiate models of different generations that carry the same model number. The method involves adding a unique identifier code as a suffix, separated by a hyphen from the main model number. For example:



-WD5000AAKS is the main model number. It basically means: Caviar Blue, 500GB, 7200RPM, 16MB cache, SATA-300 interface.
-00V1A0 is the identifier code. This particular code has been confirmed only to appear on units that contain 500GB-big platters.

The identifier code will appear on the drive label and in your PC's BIOS, but retailers and the WD website typically only advertise the main model number.

With this in mind, WD models are sorted into each platter density category by their identifier codes. The basic format of the identifier code has remained the same over time, and certain parts of the code (such as the first two characters, which have always been numbers) reflect things such as firmware revisions and OEM distributor that are not relevant to this site's purpose. For this reason, the identifier codes in the lists will always take the form of "xxV1Ax" (to use the example above). It would follow that the 500GB WD5000AAKS-60V1A0 and 250GB WD2500AAKS-00V1A0 should each contain one 500GB platter, and either two or one read/write heads, respectively.

Anyway, pick a drive width here:

-2.5" (Scorpio/Blue/Black)
-2.5" (AV-25/Red/Green/USB)
-3.5" (Caviar/Blue/Green/Purple/AV)
-3.5" (RE/Gold/Se/Black/Red)
-3.5" & 2.5" (Raptor/VelociRaptor/S25/XE)

Posted by RML527 at 3:00 PM