Mattias Wadenstein wrote:
A day or two? That's quite risky. Never mind that you get awful
performance for that day or two and/or a risk of data corruption.
Neil Brown some weeks on this mailing list expressed a very
cautionary thought:
«It is really best to avoid degraded raid4/5/6 arrays when at all
possible. NeilBrown»
Yes, I read that mail. I've been meaning to do some real-world testing
of restarting degraded/rebuilding raid6es from various vendors,
including MD, but haven't gotten around to it.
You may be interested in these results - throughput results on an 8 SATA
drive RAID6 showed average write speed went from 348MB/s to 354MB/s and
read speed 349MB/s to 196MB/s, while rebuilding with 2 failed drives.
This was with an Areca 1680x RAID controller.
http://www.amug.org/amug-web/html/amug/reviews/articles/areca/1680x/
Regards,
Richard
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