[CentOS] unison versus rsync

>I didn't think unison was maintained any more - and I wouldn't expect 
>anything to beat rsync with the -z option on a slow link.  I'd just use 
>the -P option and restart it when/if it fails.  It wouldn't hurt to do 
>subsets first since they will be quickly skipped when you repeat from 
>the root.  If you have a huge number of files it might be worth finding 
>a way to update rsync to a 3.x version which will not need to xfer the 
>entire directory listing before starting.

Looks like rf has 3.0.7, thanks for that tip. Frankly, I abhor the thought
of even using rsync for this, it's over a vpn so there is absolutely no need
for encryption but I don't know another tool that can transfer diffs only?

Thanks guys,
jlc