Re: [9fans] ata drive capabilities

[Robert William Fuller <hydrologiccycle@gmail.com>]

Christian Kellermann wrote:
> Thanks for your replies!
> 
> The reason I asked is that I am thinking about a couple of methods
> to detect failures of my two mirrored disks (by fs) automatically.
> How do you check if your disks are still ok? I know I could invest

The newer high capacity drives all have high "raw error read rates" but 
they're generally all corrected as indicated by an equivalent value of 
"hardware ECC corrected."  So this does not seem to really correspond to 
anything.

Frankly, the one SMART variable I've seen that seems to always 
correspond to impending disk failure is the "reallocated sector count." 
  Once you see that incrementing, it's time to decommission that disk 
for anything other than scratch storage.  Such drives are good for 
intermediate files of non-linear video editing until they die.