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.)







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