[ale] raid suggestions

[Jim Kinney]

Nfs root. The host end MUST be mounted noatime or it thrashes quickly once
write buffer fills up. Saw a 40% improvement on ltsp project with root
space set up right.
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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