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S.M.A.R.T. - 78.4%


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After a bit of research, I've discovered that even though the maximum value of an attribute is 255, manufacturers choose a maximum value that suits them (usually a nice round number). In WD's case, they have chosen 200 (200 / 255 = 78.4%). I have an HGST drive that seems to be using 100 instead which results in 39.2%.

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On 2/26/2021 at 9:50 AM, bejhan said:

After a bit of research, I've discovered that even though the maximum value of an attribute is 255, manufacturers choose a maximum value that suits them (usually a nice round number). In WD's case, they have chosen 200 (200 / 255 = 78.4%). I have an HGST drive that seems to be using 100 instead which results in 39.2%.

And that explains something that's puzzled me for years - why I have short bars, even on new drives, when 'longer bars are better.  Most of my drives are seagate and hgst - and an awful lot of them show 39.2% or 78.4%.

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