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What to do with old (example: 7+ years) PCs?
I recently decided to use my test box as a server (its an atom mini ITX) and once i've moved over any content of value, i want to use my current server, a PIII 450 with 640 mb of ram, for something useful. A few ideas i had were to either keep it as a backup server (which, i can do alongside some of my other ideas), a web access box (it can manage a GUI quite well - i ran KDE 3.5 on it at one point, and it ran magnificently) or a router - I have quite a few ethernet cards to spare- and i'm sure i can fit in 3-4 into that box.Its near silent, so i don't really have to worry all that much about noise
Whatever i do, it needs to play well with my current IPV4 network (though, if i can run a IPv6 tunnel from hurricane electric alongside it, it would be cool). If it can do more than one of those things (say if i can get a router with a web interface running underneath a web access box), its a bonus. I'm currently using ubuntu, so it might make for a smaller learning curve if its ubuntu based,
So... what would you do? (and yes, i'd like to keep it running. small matter of geriatric pride.. someone claimed it wouldn't run for more than a week on passive cooling ;p)