# \[solved\]Big Files wont backup

**URL:** https://forum.duplicati.com/t/solved-big-files-wont-backup/21981
**Category:** Uncategorized
**Created:** [February 16, 2026, 10:16pm UTC](https://forum.duplicati.com/t/solved-big-files-wont-backup/21981 "2026-02-16T22:16:20Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![CVhwie](https://forum.duplicati.com/letter_avatar_proxy/v4/letter/c/4491bb/32.png) [@CVhwie](https://forum.duplicati.com/u/CVhwie)
#### Post date: [February 16, 2026, 10:16pm UTC](https://forum.duplicati.com/t/solved-big-files-wont-backup/21981/1 "2026-02-16T22:16:20Z")

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Hey there,

i’ve been running Duplicati some time on my own maschine, and wanted to use it as well for my wifes Laptop.

Backup location is a flash device pluged to an RasPi , accessed via Sftp. Backup runs through (slow as expected). then i realized that the source is 46GB, backup only 9GB. Did some checking: All the big files (Videos, Thunderbrid… ) are not in the backup, even though they / the containing folders are marked to backup.

Whats the play here?

Tried reinstalling and feeding it the config.json, same result.

MfG

Edit:

After an Update to the current version there was a box checked which should not have bben (exempt large files)