Disk spin down is a big power saver but drive lifespan is a function of spinups. It's a nasty tradeoff.<br><br>Cooling is a HUGE expense. Systems run fine with ambient air at 90F. Moving air is cheaper than cooling air. So large fans and higher flow with warmer intake temps will lower power bills.<br>
<br>Hmm. With liquid cooling and a large heat-sink reservoir, it would be easy to soak up excess heat during the hot day into the heat sink and then exhausting the heat during the cooler night without the use of compressors - just water pumps and large radiators and maybe evaporative cooling with water.<br>
<br>Shift to HE Opteron systems as they have better performance/watt numbers.<br><br><div class="gmail_quote">On Thu, Jul 8, 2010 at 5:44 PM, Jeff Hubbs <span dir="ltr"><<a href="mailto:jhubbslist@att.net">jhubbslist@att.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> What hardware/software features do I need to look for with respect to<br>
reducing the amount of electric power a Linux server requires (beyond<br>
n.-s.-Sherlocks like fewer cores/drives/DIMMs)? I'm talking about<br>
things like clock speed control - perhaps even disk spin-down (unless I<br>
go SSDs).<br>
<br>
- Jeff<br>
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