Just out of curiosity, what is it that these various programs that people have recommended do with regard to imaging that "dd" doesn't?
I've never looked at any of these in any great detail but so far as I can see they all add complexity while reducing functionality.
Image a disk? dd
Backup a file system? rsync
to tape? tar
to remote? ssh (or scp)
scheduled? put any of the above in cron
That's all you need. What am I missing?
Regards,