Rick DeNatale wrote: > As advised by the session which Jason and Jeremy did last year on backups I > do rsync based incremental backups on my workstation/server to a separate > physical hard drive. This gives me redundant copies of the current state of > my data, as well as historical backups. If one of my main drives fails I can > recover recent state (no longer than 4 hours ago) from the backup. And if I > oops I can go back four hours, yesterday, last week, two months ago etc.
I always see lots of people using rsync in various ways to do backup, and it is a very good idea. Have you ever looked at rdiff-backup: http://www.nongnu.org/rdiff-backup/ I have been using it for about a year and a half now, and it is wonderful. Instead of storing whole copies of changed files, it stores a binary diff of the changes. It can be a little bit CPU intensive though, since it has to diff any changed files. I usually store about 1-2 months worth of twice per day differentials of my 2 home machines, on a seperate drive. At my usage levels that is when they tend to grow to roughly 1.5x - 2x the size of the original. I set up a friends machine running rdiff-backup to an extra hard drive she had. She currently has over 1 year of daily differentials stored and it is using, if I remember correctly, about 25-30% more space than the full backup. So, obviously, YMMV :). Pat
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