Comment 3 for bug 696006

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Christian Franke (christian-franke) wrote :

This is not an Ubuntu specific issue. SMART attributes and especially the raw values are not standardized at all.

The Power_On_Hours value 56006373544470 = 0x32f000001216 suggests that the raw bytes encode two values. This looks somewhat similar to the format used by Sandforce based SSDs: 32-bit hours count (lower 4 bytes) + 24-bit milliseconds count (using reserved byte).

If 0x1216 = 4630 hours is a reasonable value for this drive please whether
  -v 9,msec24hour32
produces reasonable output (this requires smartmontools >= 5.40 ... r3133).

An ST9250827AS with older(?) firmware "3.AHC" produced normal Power_On_Hours values.