Re: [smartmontools-support] Intel SSD "233 Media_Wearout_Indicator" is not prefail?

[Christian F. <Chr...@t-...>]

Karl Pielorz wrote:
> Hi,
>
> We have a number of Intel 320 series (e.g. INTEL SSDSA2CW160G3) SSD's being
> monitored by Smartmontools. Recently we noticed a number of drives have
> clocked their wearout indicators down by 1%, i.e.
>
> "
> 233 Media_Wearout_Indicator 0x0032   099   099   000    Old_age   Always
> -       0
> "
>
> Our smartd.conf says:
>
> "
> DEVICESCAN -p -H -l error -f -m root -S on -M test
> "
>
> We didn't get an email for this, as I'm guessing the attribute is "Old_age"
> not "Pre-fail" (which the -p monitors).

You never get an email for this even if -f (check for failure of usage 
attributes) is specified. Threshold 0 means that this attribute never fails.


> The only "Pre-fail" attributes these drives list are:
>
> "
> 170 Reserve_Block_Count     0x0033   100   100   010    Pre-fail  Always
> -       0
> 232 Available_Reservd_Space 0x0033   100   100   010    Pre-fail  Always
> -       0
> "
>
> Is this likely to be enough to 'catch' these drives before they fail?

Media_Wearout_Indicator may be somehow connected to these attributes, I 
don't know.


>
> I just didn't want a scenario where 'Media_Wearout_Indicator' falls down to
> low values, and we don't get any warnings.

Add '-u -r 233! -R 233!' to the smartd.conf line to enable warning 
emails each time this attribute changes.

See also:
http://sourceforge.net/apps/trac/smartmontools/ticket/248#comment:1

Thanks,
Christian