Contributed by jose on from the amusing dept.
"R2D2PC is a completely fanless router running OpenBSD 3.4-stable. It serves very well as firewall, router, mp3 player, web and file server. To guarantee absolute noiseless operation the complete OS is placed on a 512mb compact flash card. I've used a boot floppy for the OpenBSD installation and downloaded the necessary packages via FTP. The mechanical hard drive is mounted as /home. It starts spinning only when personal data is accessed or when the system gets upgraded from sources. Httpd, smtpd and all other services are completely independent from the mechanical hard drive. A mfs (memory file system) RAM disk makes it possible to play many mp3 files without the need of a spinning hard drive. On average (low CPU usage) the router consumes less than 20W per hour."
Now that's an interesting use of OpenBSD.
(Comments are closed)
By hovil () on
By Anonymous Coward () on
Comments
By Michael () on
One thing that worries me a little bit is the fact that if the fan breaks and stops spinning, I won't be able to hear the noise difference as my CPU bakes.
By FormerRetailOwner () thanks.anyway@nospam.com on mailto:thanks.anyway@nospam.com
By Anonymous Coward () on
A few links of interest to some people:
http://www.pcengines.ch/
http://www.nagasaki-tech.com/
Of course also:
http://www.nmedia.net/~chris/soekris/
http://www.nmedia.net/~chris/nsh/
And as mostly everyone knows:
http://www.soekris.com/
and others...
What I'd like to do though also is be able to make a small version of OpenBSD (FW/Router/IKE) only version in as little space as possible. Either on Flash/SanDisk media, CDROM with MFS (preferably) or HD.
Anyone have such experience with; advice and/or pointers on how or where to start on such a thing other than from the links I've pasted?
Thx.
Comments
By jose () on http://monkey.org/~jose/
http://monkey.org/~jose/software/minisoekris/
uses nsh, an openbsd 3.3 kernel, and a very simple configuration engine. should be trivial to add IKE to it. now that i have more time, i should use my second soekris for more testing ...
By Anonymous Coward () on
By Michael Sullenszino () no spam at sullenszino org on mailto:no spam at sullenszino org
Comments
By Anonymous Coward () on
By Anonymous Coward () on
btw, what is "20 Watt per hour"? Either it's "20 Watt" or it's "20 Watt hours per hour" :)
Regards
Comments
By jose () on http://monkey.org/~jose/
and of course some CF cards work better than others ...
By djm () on
By Anonymous Coward () on
By Anonymous Coward () on
Energy is the capacity of a body to do work. Energy has the same units as work, and, by definition, 1 Watt-second = 1 Joule. And 1 kWh = 3.6E6 Joules.
Power is the time rate at which work is done. By definition, 1 Watt = 1 Joule/second.
So:
"20 Watts" is a measure of power.
"20 Watts/hour" is meaningless.
"20 Watt-hours/hour" is also meaningless.
What the author probably meant was the standard, but slightly ambiguous, usage for Energy that we see on all of our appliances. 20 watts.
The actual Energy consumed (Joules, or equivalent) is probably 20 watt-hours. Not bad - less than a standard lightbulb, and only a bit more than the flourescent models.
M
Comments
By Anonymous Coward () on
Actually, that would be the acceleration of power consumption, analogous to m/(s*s) which is the standard SI-unit for acceleration.
If this is really what's meant, I suggest sacrificing the uptime and powercycling it once a day. :)
By James Herbert () on
Bollocks!
A watt-hour is a measure of energy, one-thousandth of a kWh, which I imagine is what your electricity company measures your consumption in.
So, if you use 1 Wh (watt-hour) of energy in one hour, that's one watt average.
So, if you use 20 Wh in one hour, that's 20 W on average. So it's not meaningless at all.
James
By RC () on
> only a bit more than the flourescent models.
Well, 20w is good of course (not incredible in the slightest), but comparisons to lightbulbs aren't... I don't think I have a single computer around that uses more than 100W normally. Of course, the peak goes above that at times, but that is still less than a very common lightbulb.
Incidentally, power consumption would be even less if using an old notebook. I have one, but with only one PCMCIA slot, and no built-in ethernet, it wouldn't make a very good router, until OpenBSD supports a Parallel-Port ethernet device of some kind. Now, I use an old 180MHz PentiumPro underclocked to about half it's clock speed, plus an always-on hard drive, and with that less-conservative setup, I'm only using about 35 watts.
By larry lurex () on
By Shane () on
http://www.soekris.com/net4801.htm
By RC () on
> starts spinning only when personal data is accessed
Can anyone explain how this is done? I just checked, and still in 3.4, when a hard drive is spun-down with atactl (and it happened when spun-down by the bios as well) it almost immediately spins up again. So, how is the hard drive able to stop spinning for any ammount of time in this setup?
Comments
By Andreas Bartelt () r2d2@bartula.de on www.r2d2pc.com
By Andreas Bartelt () r2d2@bartula.de on www.r2d2pc.com
I've added new photos of R2D2PC to the gallery section at www.r2d2pc.com .
I'm going to add more content to this website soon.
By Andreas Bartelt () r2d2@bartula.de on www.r2d2pc.com
I've added new photos of R2D2PC to the gallery section at www.r2d2pc.com .
I'm going to add more content to this website soon.