How do you make a backup without admin access to the server? Wait, lemme guess... a mod that backs up chunks directly from Minecraft's cache?
And we have a winner! (Although a cheater if you read PMs

)
In all seriousness though, I backup both the Fenris, Apollo, Herc, and Deimos every once and a while, make schematics of them, drop them in once place, and render (at SW_30*, for people who know dynmap's render stuff). Herc and Apollo never get updated (they are done after all), Fenris every few weeks, Deimos based on the amount of progress I make, anywhere from 2 days to 2 weeks.
Shame you're never on IRC, or you'd have known about this like 2-3 weekks ago.
