[rdiff-backup-users] operational questions

[Eric S. Johansson]

the hard drive of a friend's machine (MacOS X) died recently.  I'm 
trying to help him figure out ways of setting up collaborative backups. 
 Ideally, something like rdiff-backup would work because we could just 
keep a running backup of the current state of the machine plus a few 
weeks worth of reverse deltas for relatively low bandwidth costs. 
Problem being that the data is in plain text.  which drew my attention 
to duplicity.  Unfortunately, it doesn't look like that would work in 
quite the same way.

duplicity probably won't work because of the cost of generating new 
snapshots and transferring them across the net.

any suggestions for somehow protecting rdiff backed up data on a 
friendly foreign machine?  After all, I really don't want even have a 
faint chance of accidentally tripping across my friends e-mail/documents 
etc.  and because he has root access on this machine, I don't want him 
tripping across my backed up content either.

thanks in advance for replies
---eric