There are many applications for doing backups, most of which have strong and weak points. I use 3 systems: * Homemade shell script that tgzs the entire backup set into a dated file, encrypts it with gpg, and transfers it to the backup server. o Strong points 1. Secure - no need to trust foreign server 2. High redundancy of data o Weak points 1. Bandwidth intensive (only good for small data sets) 2. Heavy on CPU usage 3. Uses a lot of disk space * Rsync o Strong points 1. Space efficient on the backup server 2. Bandwidth efficient 3. Fast o Weak points 1. No revisions; undetected data loss will be propagated to the backup server * rdiff-backup o Strong points 1. Bandwidth efficient 2. Has revisions and stores diffs compressed 3. Somewhat space efficient because of the compressed diffs o Weak points 1. Uses more space on the backup server than Rsync I use Rsync for mirroring my less important data, and rdiff-backup for my important files. All of these methods can be scheduled with cron. Eric Michael Zarozinski wrote:

Hi all,

I'm looking for recommendations for backup/imaging tools. We have 2 servers runing RHEL4, one is a production server and the other a development server.

We were recently hit with a DOS attack and possibly a root kit attack. It's been a long task re-installing all the software/tweaks we've made so I'm looking for something to ease this process if it happens in the future.

Thanks in advance,

Michael Z

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