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Stick to the SMART values mentioned in the FAQ for failure probability calculation #17

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saladpanda
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https://www.snapraid.it/faq#smart mentions five SMART values to be of particular importance when judging the disks health:

  • Reallocated_Sector_Ct (5)
  • Reported_Uncorrect (187)
  • Command_Timeout (188)
  • Current_Pending_Sector (197)
  • Offline_Uncorrectable (198)

However, the calculation performed by snapraid smart also uses Load_Cycle_Count (193), which I find confusing (see #16).

This PR makes snapraid stick to the documented values and avoids confusion.

@amadvance
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Hi @saladpanda

For now, I'm going to put this on hold. I understand that checking this attribute may be somewhat controversial, but on the other hand, I think it's useful to be notified if it increases significantly.

I'll do some research to see if I can find anything conclusive about it.

Ciao,
Andrea

@amadvance amadvance force-pushed the master branch 2 times, most recently from 9222213 to 79e8794 Compare January 10, 2024 13:17
@ifsnop
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ifsnop commented Feb 7, 2024

Can we get the failure probability calculation as a standalone executable or as a bash script? I find it really useful, and would love to use it from inside scripts in different systems (arm/i386). Maybe someone has done some work following this approach.

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3 participants