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Version control
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Nextcloud supports simple version control system for files. Versioning creates
backups of files which are accessible via the Versions tab on the Details
sidebar. This tab contains the history of the file where you can roll back a
file to any previous version. Changes made at intervals greater than two minutes
are saved in **data/[user]/versions**.
.. figure:: ../images/files_versioning.png
To restore a specific version of a file, click the circular arrow to the left.
Click on the timestamp to download it.
The versioning app expires old versions automatically to make sure that
the user doesn't run out of space. This pattern is used to delete
old versions:
* For the first second we keep one version
* For the first 10 seconds Nextcloud keeps one version every 2 seconds
* For the first minute Nextcloud keeps one version every 10 seconds
* For the first hour Nextcloud keeps one version every minute
* For the first 24 hours Nextcloud keeps one version every hour
* For the first 30 days Nextcloud keeps one version every day
* After the first 30 days Nextcloud keeps one version every week
The versions are adjusted along this pattern every time a new version gets
created.
The version app never uses more that 50% of the user's currently available free
space. If the stored versions exceed this limit, Nextcloud deletes the oldest
versions until it meets the disk space limit again.