<p>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.</p>
<div class="gmail_quote">On Feb 15, 2012 9:33 AM, "Brian MacLeod" <<a href="mailto:nym.bnm@gmail.com">nym.bnm@gmail.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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On 2/14/12 10:32 AM, <a href="mailto:mike@trausch.us">mike@trausch.us</a> wrote:<br>
><br>
> I see no need for hardware RAID in this day and age, period. There<br>
> will always be someone out there that desires to use thing X for<br>
> any given X, but that does not mean that there is an actual _need_<br>
> to do so.<br>
<br>
<br>
Raw, unadulterated speed. We've recently had to convert machine with<br>
software RAID to hardware based RAID because we have so many clients<br>
booting/running from it (NFS root). The HW RAID keeps up, AND, doesn't<br>
take down racks of machines to rebuild an array when a drive is shot.<br>
<br>
Yes, you can tune those parameters in SW RAID, but when you get to the<br>
point that the throughput is down to the same rate as changes (which<br>
is where the racks of nodes would function), what's the point of it<br>
being RAID in the first place?<br>
<br>
Brian<br>
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