Hello,

Does anyone know which is the signification of the "Media" in the Drive Configuration Matrix (DCM) from Western Digital drives ?

Given a DCM of HACTJABB for instance, there is a very large palette of matching drive capacities, typically 80 GB, 120 GB, 160 GB, 250 GB, 320 GB, 500 GB.

According to the list above, all those drives would have the same media ...

Does "Media" just mean "Platter" without taking into account the number of platters, nor the data density ?

Thanks.

I don't think it works like that. I'm pretty sure the DCM letters only apply within the same model (possibly family) hard drive. So of you have a WD5000LMVW-11VEDS0 and a WD3200LMVW-11VEDS0 with matching headstack letter in DCM (a J based on your DCM) it's likely the same heads with either one head turned off (possibly failed) in the 320Gb model or the LBA reduced due to a larger number of unusable tracks on the media.

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