With my upload speed it would probably take 2 years to do one backup.
In any case... either I did the backup in the nick of time, or all the load from doing the backup pushed it over the edge, but the DC-DC PSU in my music server just went tits up. The thing's full of cheap CapXon pieces of shit, nearly all of which have vented. Tomorrow I'll recap it (if I have suitable replacements), and hopefully the worst will be a quick journal replay on bootup. ARGH.