On Fri, 11 Oct 2013, Guillaume Betous wrote:
Hi all,
Now my RAID is back thanks to all your precious advices, I want it to
be as reliable as possible, knowing that I own "ordinary" hadrware :
- standard PC (Atom based)
- standard hard drives (some WD Red, but also Green, and Seagate
without ERC capabilities)
- standard need : NAS service, which aims at reliabily serve files for
the whole local network (Gigabit).
So, here is my current setup :
- The RAID contains a spare disk
- I set timeouts to 30" at every boot
I would recommend setting this to 180 seconds.
- The default SCT ERC value is 7" on my two Red disks
- I cron a check every week
What other advice could be done *before* the failure happens ?
RAID6, preferrably with a spare.
Also save mdadm --examine and smartctl -a from all drives at each start
(or at least after every time you've done a change to the array), so in
case you get catastrophic superblock failure you can match roles and
serial numbers of each drive.
I would also recommend having a recent enough kernel so you can do
in-place replacement. I believe this is 3.3 and later.
--
Mikael Abrahamsson email: swmike@xxxxxxxxx
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