Yes, I know there's no substitute for backup, but its not feasible once you get beyond a certain size. And offsite backups would be best but again I don't think its feasible unless you have access to a data center where you can coloc a backup server.
So if I enable duplication doesn't that effectively achieve the goal of backups? The other option is to build a 2nd server and use it for backups which is just added expense. I am not worried about accidental deletions, even with a backup server I'd use rsync.
What do people use for backup?