Question about SMART 173 parameter...

Rubén Merino Pesquera <[email protected]>
Newsgroups gmane.linux.utilities.smartmontools
Message-ID <CAB9=5dxy+Cd8MCc5emuNC8XDxic_tX35uJMaG6ZpTnfhaAo+1A@mail.gmail.com>
Good afternoon,

I own a two year-old MBPr with an SSD SM256E, I was always trying to guess
the units used in the smart parameter 173 reported by smartctl. For example:


ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED
WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x001a   200   200   000    Old_age
Always       -       0
  5 Reallocated_Sector_Ct   0x0033   100   100   000    Pre-fail
Always       -       0
  9 Power_On_Hours          0x0032   099   099   000    Old_age
Always       -       4801
 12 Power_Cycle_Count       0x0032   098   098   000    Old_age
Always       -       1701
169 Unknown_Attribute       0x0013   253   253   010    Pre-fail
Always       -       1005450172672
173 Wear_Leveling_Count     0x0032   194   194   100    Old_age
Always       -       *17193435208*

I always assumed it was measured in KiB (at least it was what made the most
sense to me) but after reading this
<http://www.reddit.com/r/applehelp/comments/2q80fe/the_ssd_in_my_13_month_old_mbpr_is_failing/>
post in reddit of a user with a similar computer, (and believing that it
can't possibly wrote more than 10 PB to his ssd), I think I am clearly
mistaken.

Could you clarify it for me, please?

Kind regards and thanks in advance.

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