Backing up your files can prevent the loss of data. You should store your backups in more than one location, off-site. It is also a very good idea to practice restoring your files in a mock-data-loss scenario. Document this process thoroughly (and refer to this support article) so that in a real emergency, you are able to restore your systems as fast as possible using good instructions.
Before making any custom changes in HTML or installing a new theme, it is also recommended to backup your store files. Follow these steps to back up your store. Log in to your admin panel dashboard and:
- Hover over the gear icon .
- Choose Settings  on the drop-down list and,
- Navigate to the left sidebar of the page and click Template Preferences :
Scroll down to the bottom of the page and click the blue Take Backup button. The system will backup your data automatically and create a restore point within ecomnation: