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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Poor PUE at part load is an excuse for
poor design.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>There is no theoretical reason why PUE
should be much, if any, worse at part load compared to full load. It largely comes
down to the choice of technologies and how they are controlled.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>A good case in point is a 300kW (peak
capacity) data centre we are monitoring in <st1:City w:st="on"><st1:place
w:st="on">Melbourne</st1:place></st1:City>. It is less than 15% full and
is still operating at a PUE of around 1.15 in winter and around 1.30 in summer.
As the load increases we are expecting the PUE to stay about the same or maybe
increase slightly.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Kind Regards</span></font><font size=2
color="#0f2b5f" face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:#0F2B5F'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color="#0f2b5f" face=Arial><span
style='font-size:12.0pt;font-family:Arial;color:#0F2B5F'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>Tony de
Francesco<br>
Technical Director</span></font><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>email: tonyd@pue.com.au<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>mob: +61 (0) 457 701 179<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
8.0pt;font-family:Arial;color:black'>.....................................................<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:navy'><img width=140 height=86 id="_x0000_i1026"
src="cid:image001.jpg@01CCCB3B.8DE58500"></span></font><font color=navy><span
style='color:navy'> </span></font><o:p></o:p></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span lang=EN-US style='font-size:10.0pt;font-family:Tahoma'>
ausnog-bounces@lists.ausnog.net [mailto:ausnog-bounces@lists.ausnog.net] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Mark Newton<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, 4 January 2012
11:07 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Phillip Grasso<br>
<b><span style='font-weight:bold'>Cc:</span></b> ausnog@ausnog.net<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [AusNOG] Data Suburb</span></font><span
lang=EN-US><o:p></o:p></span></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
On 04/01/2012, at 9:20 PM, Phillip Grasso <<a
href="mailto:phillip.grasso@gmail.com">phillip.grasso@gmail.com</a>> wrote:<o:p></o:p></span></font></p>
</div>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt' type=cite>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><span class=apple-style-span><font
size=3 face="Times New Roman"><span style='font-size:12.0pt;background:white'>"</span></font></span><span
class=apple-style-span><b><font face=Arial><span style='font-family:Arial;
background:white;font-weight:bold'>The world's highest density large scale data
centers are also the most efficient!"</span></font></b></span><o:p></o:p></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Quoted from their site; also said they are 1.24 PUE, which compared to
ancient datacenters might be pretty efficient but I won't say they are the
"most efficient". <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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</blockquote>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>They aren't full yet. Efficiency always takes a hit when capacity is underutilized
during the buildout phase, but improves rapidly when installed infrastructure
starts to reach its designed "sweet spot."<o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Give 'em another year then look again.<o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> - mark<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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