Mikael Abrahamsson wrote:
Since the drive has ECC, it would be interesting to see the amount of
read errors ECC has corrected. Would also be interesting to know if the
drive will rewrite a sector if it's ECC corrected, so that ECC doesn't
have to kick in next time (or if they're actually operating in so narrow
margins that they actually use the ECC constantly because the s/n ratio
is bad and that this is part of the design).
I guess this is manufacturer and model specific, but looking smartd
output from a representative (as in similar errors etc to others of the
same model) Seagate SCSI drive, they are not rewriting on ECC:
Error counter log:
Errors Corrected by Total Correction
Gigabytes Total
EEC rereads/ errors algorithm
processed uncorrected
fast | delayed rewrites corrected invocations [10^9
bytes] errors
read: 2205106 0 0 2205106 2205106 18342.407
0
write: 0 0 0 0 0 3831.185
0
Regards,
Richard
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