[smartmontools-support] Inconsistent long test times

[Christian Franke]

Kent Watsen wrote:
> ...
>
> I recently ordered 10x 2TB SATA drives:
>
>      5x WD Blue WD20SPZX
>          - 2x from Amazon
>          - 3x from NewEgg
>      5x Seagate BarraCuda ST2000LM015
>          - 3x from Amazon
>          - 2x from NewEgg
>
> All of the Seagate drives say to wait ~330 minutes for the long tests to complete.  All of these drives have the same “Product” (ST2000LM015-2E81) and “Revision” (0001) values.
>
> However, there is a variation in the WD drives.
>    - the 3 drives from NewEgg say to wait 119 minutes for the long tests to complete.
>    - the 2 drives from Amazon say to wait 737 minutes for the tests to compete.
>
> Digging deeper, the “Product” and “Revision” values of the WD drives vary:
>    - the 3 drives from NewEgg: Product WDC WD20SPZX-22U Revision: 1A01
>    - the 2 drives from Amazon: WDC WD20SPZX-75U Revision: 6712

Do the "Product of ..." texts printed on the drive labels differ?

A recent article in German "c't Magazin" (ct.de) shows two rather 
different WD Blue with same model string WD20EZRZ-00Z5HB0:
"Date: 03 OCT 2015 - Product of Thailand": drive with 2 platter.
"Date: 12 OCT 2015 - Product of Malaysia": drive with 3 platter.

Thanks,
Christian