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When planning your strategy for backing up data (and you should back up your data regularly), always make sure you have a way to restore the information from your backup to the main system, that doesn't involve using the backup itself. It's an important part of data security and information security. If your restoration program is saved as part of your backup copy, you might not be able to restore your data in a crisis - because to do the restoration, you need the software that has to be restored. It becomes a 'catch-22' situation. Usually, having the installation disks for your backup program will prevent the 'catch-22'.