[ale] raid suggestions

[mike at trausch.us]

On 02/09/2012 04:26 PM, Erik Mathis wrote:
> That was a pretty good read. I think it missed some pro's for hardraid
> (hardraid not being some microcenter raid card). Maybe the biggest one
> imho is that when a drive fails in some remote office, you can simply
> send out a new drive from your pile of spares and the local "Johnny
> the windows guy" can just remove the drive with the amber light on it
> and slide in the new one. BAM! the volume is rebuilding.
> No need to log into the box and
> remove it from softraid (mdadm /dev/md0 -r /dev/sda1)
> remove drive from the scsi controller (echo "remove-single-drive 0 0 0
> 1" > /proc/scsi/scsi
> Then reverse that process (and hope it works)
> Thus freeing my self up doing more important things.

It's not so hard, really.  I've had to swap out several drives recently,
and being that I hadn't done anything with the array in question for
some time, I had to spend perhaps three minutes reading the man page to
find the exact command line switches I needed to use, but then I was
able to get it done without a worry.

Thankfully, I did remember that the disk controller is buggy and didn't
hot-swap the failed drive, or I would have been in some deep trouble.  :)

	--- Mike

-- 
A man who reasons deliberately, manages it better after studying Logic
than he could before, if he is sincere about it and has common sense.
                                   --- Carveth Read, “Logic”

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