# Save Full system ### Save Full system The "Save Full System" option from the Backup menu, allows to save on an external media the entire database files, and sales totals. This function performs a complete copy and should be run at least once a week, especially if there is no backup hard drive. "Back-Office" saves the information in the same manner as the "End of Day" option. This operation does not replace the invoice archive information. This option should be used in addition to the "Save Checks to Disk" option. The Save Full System function copies all files with the extension .DAT from the Data folder to the external media. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.payfacto.com/payfacto-knowledge/maitred-pos/maitred/maitred-complete-online-documentation/chap-6-system-configuration/backup/save-full-system.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.