what synchronizing tools exist?
 

Hi,

I'm looking for a tool that could synchronize my home directory, in a way that I could replicate through several backup disks. If one day I lost my home directory, I can retrieve the latest correct state from the backup disks.

I found the rsync and the rsnapshot tool. I also found a review telling that rsync is a difficult tool to use, and if you don't be careful, you'll lose some files without noticing it.

What good tools exists beside the rsnapshot or the rsync?

rsync is a perfectly good option. Issues can arise if you have an "active / active" style of syncing, if if you want copies of one directory at points in time, then it will work.

I use unison and a server to sync my backups

I use rsync to make snapshots of various things including my $HOME on a remote machine. I run this script as a cron job every 4 hours and each day, week, month. Of course, some things, such as the linked to script itself, I keep backed up with Subversion or git.