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SubjectRe: Two equal harddrives on one cable behaving different
At 1:03pm +0200 8/27/02, Daniel Egger wrote:
>I'm currently in the process of mirroring a drive with bad sector
>to an equal second one (same modell, same version, same firmware).
>Both of them are on the same cable, the old one as master, the new
>one is slave (now on the outer end of the cable). According to
>smartctl the old one is continously ressolving a couple CRC errors
>per hour while the second one hasn't suffered a single one yet.
>
>(195)Hardware ECC Recovered 0x001a 100 100 000 29678
>few minutes later:
>(195)Hardware ECC Recovered 0x001a 100 100 000 29694
>
>other drive:
>(195)Hardware ECC Recovered 0x001a 100 100 000 0
>
>The cable (80 conductor) seems fine (optically) and I'd wonder if it
>is the culprit because the drive on the outer end (now) works fine.

ECC errors get corrected in the drive, so it would be surprising if
the cable had an effect. Do you have reason to think that's
happening? That is, if you swap the drives on the cable, do the
errors stick with the cable position, or the physical drive? I'd
expect the latter, and if so would retire the drive.
--
/Jonathan Lundell.
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