[ale] raid suggestions

[Jim Kinney]

As I know some bits of your setup, I would really be interested in details
of configuration and symptoms of your issues before and after the change.
I've seen sw raid just SUCK performance wise and it's always been crappy
hardware root cause. It sounds like you've hit a corner case in software
that would be good to document fully for a "don't do this" paper.
On Feb 15, 2012 9:33 AM, "Brian MacLeod" <nym.bnm at gmail.com> wrote:

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> On 2/14/12 10:32 AM, mike at trausch.us wrote:
> >
> > I see no need for hardware RAID in this day and age, period.  There
> > will always be someone out there that desires to use thing X for
> > any given X, but that does not mean that there is an actual _need_
> > to do so.
>
>
> Raw, unadulterated speed.  We've recently had to convert machine with
> software RAID to hardware based RAID because we have so many clients
> booting/running from it (NFS root). The HW RAID keeps up, AND, doesn't
> take down racks of machines to rebuild an array when a drive is shot.
>
> Yes, you can tune those parameters in SW RAID, but when you get to the
> point that the throughput is down to the same rate as changes (which
> is where the racks of nodes would function), what's the point of it
> being RAID in the first place?
>
> Brian
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