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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thanks, that is very useful. <o:p></o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Have you actually deployed any schools with 250-500 yet,
Sridhar?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>David Leeming<o:p></o:p></span></b></p>
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color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> Tim McNamara
[mailto:paperless@timmcnamara.co.nz] <br>
<b>Sent:</b> Tuesday, 6 July 2010 6:16 p.m.<br>
<b>To:</b> Sridhar Dhanapalan<br>
<b>Cc:</b> David Leeming; XS Devel<br>
<b>Subject:</b> Re: [Server-devel] Latest on capacity of the school server<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>On 6 July 2010 17:49, Sridhar Dhanapalan <<a
href="mailto:sridhar@laptop.org.au">sridhar@laptop.org.au</a>> wrote:<o:p></o:p></p>
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<p class=MsoNormal>On 2 July 2010 03:45, David Leeming <<a
href="mailto:david@leeming-consulting.com">david@leeming-consulting.com</a>>
wrote:<br>
> What experience do we have on the latest thinking about the capacity of a<br>
> single server? Here in Kosrae they have good 24/7 power availability and<br>
> air-conditioned offices in five of the schools. We can therefore specify<br>
> powerful machines, even dedicated server models if need be. If we
segregate<br>
> off each of the 24 class groups, would a single powerful machine server be<br>
> able to handle 500 students in 24 classes (courses) simultaneously? (of<br>
> course in practice that maximum load will rarely occur).<br>
><o:p></o:p></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><br>
6) 250-500 XOs: 5-15 APs, XS with dual-core 2GHz+ CPU and 4GB RAM,<br>
gigabit network. Site issues will be the primary concern.<br>
<br>
<br>
We have reckoned for 30 active XOs per AP.<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>Sridhar & others<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>How do 7200rpm SATA hard drive speeds match up under this
much simultaneous load?<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>Tim<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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