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How Often Should You Backup Your WordPress Database? – wordpress database backup
Have you ever wondered how often it is really necessary to make a full backup of your WordPress database?
There is no answer that is completely right, though the more often the better, especially if you are running a blog as a business. Your best results will be most dependent on how often your content tends to get updated, as well as how consistently there are changes made to the site architecture itself.
A multi-author site, or site that has heavy traffic and is updated several times a day, receiving massive numbers of comments might need to have backups scheduled every hour on the hour.