On 3/23/11 7:28 AM, Alan Brown wrote: > Phil Stracchino wrote: > >> Well, a good start is to use something like SMART monitoring set up to >> alert you when any drive enters what it considers a pre-fail state. >> (Which can be simple age, increasing numbers of hard errors, increasing >> variation in spindle speed, increasing slow starts, etc, etc...) > FWIW: Nexan, Xyratec and Infortrend all have SMART tracking disabled on > their hardware arrays because they claim it usually only says a drive is > on its way out a few hours after it died. > > (Personally: I use it and find that it does predict imminent drive > failures, but usually with less than 24 hours to go. That's still better > than no warning at all.) > > Since drives ONLY fail on Friday afternoons local time, an effective remedy is to check for SMART messages before the weekend. Foolish as that is, I am surprised how many times it has held true for me.
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