Re: RAID1 degraded

[Anthonys Lists <antlists@youngman.org.uk>]

On 04/08/2015 06:55, Hans Malissa wrote:
> Thanks a lot for your help!
> Rebooting the system didn’t solve the problem, /dev/sdc is still nowhere to be found.
> So I will have to replace /dev/sdc.
> I tried to learn a bit about SRC/ERC from list archives, and it seems like my hard drives (1TB Seagate Barracuda’s) don’t support this option:
>
> # smartctl -l scterc /dev/sdb
> smartctl 6.0 2012-10-10 r3643 [x86_64-linux-3.7.10-1.45-desktop] (SUSE RPM)
> Copyright (C) 2002-12, Bruce Allen, Christian Franke,www.smartmontools.org
>
> SCT Error Recovery Control command not supported
I've got Seagate Barracudas (the 3TB version) and was a bit miffed to 
realise that they didn't support this. That said, with mirrored 1TB 
drives, you shouldn't have any real problems with SRC/ERC - the problem 
is that a drive that returns 1 error per 10TB read is within spec, if 
your array is over that size, then "good" drives could well cause a 
crashed array if you have any glitches. (It seems that most drives are 
well over spec, but why run the risk).

If you're price-conscious, WD Reds are not much more expensive than 
Barracudas, and are advertised as "good for RAID". I'm looking at them 
for my next hard drives.

Cheers,
Wol
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