Steve Litt on 21 Mar 2017 09:22:04 -0700


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Re: [PLUG] Low Power Consumption Firewall/Router


On Tue, 21 Mar 2017 11:05:04 -0400
bergman@merctech.com wrote:

> In the message dated: Tue, 21 Mar 2017 09:38:43 -0400,
> The pithy ruminations from Casey Bralla on 
> <[PLUG] Low Power Consumption Firewall/Router> were:
> => I'm looking to reduce my electrical power consumption on my home
> network and => would like some advice.
> => 
> => Right now I use an old Pentium III system with 3 NICs running
> Debian and => Shorewall to act as a firewall and router for a DMZ and
> internal network.  This => works fine, and has the advantage of being
> easy for me to administer since I'm => so familiar with Debian.
> (Also Shorewall has great How-to documentation.) => 
> => The only downside is that old Pentium system drawing 65 watts
> (headless) 24/7.  
> 
> Is your interest in saving energy, saving the cost-of-energy, or both
> (or something else)?
> 
> 
> Hmmm.... 65W x 24h x 30 =~ 47KW/month.
> 
> PECO Cost/KWh =~ $0.0615 ~ $0.075, depending on the plan & reseller. 
[snip]
> 	$50 purchase price + N months * $0.25/mo  <  $3.00/mo * N
> months
> 
> Or... about 19 months.

Several people brought this up, one way or another. But...

* The new box will make a lot less noise if it's fanless.
* The new box will be much smaller.
* Firewalls break sometimes. Old box will be swap-in replacement for
  new.
* The new box won't get as hot:
	- It will last longer
	- Save money on air conditioning in summer

SteveT

Steve Litt
March 2017 featured book: Troubleshooting: Why Bother?
http://www.troubleshooters.com/twb
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