How Often Should You Backup?

If you do not need to minimize time and media spent on backups, you can do full backups every day. However, this is not realistic for many sites, so incremental backups are most often used. In this case, it is recommended that you back up your site to be able to restore files from the last four weeks. This requires at least four sets of tapes--one for each week, which you would reuse each month. In addition, you should archive the monthly backups for at least a year, and then keep a yearly backup for a number of years.