files_versions Versions AGPL Frank Karlitschek, Bjoern Schiessle 4.93 true ownCloud supports simple version control for files. The versioning app expires old versions automatically to make sure that the user doesn't run out of space. The following pattern is used to delete old versions: For the first 10 seconds ownCloud keeps one version every 2 seconds; For the first hour ownCloud keeps one version every minute; For the first 24 hours ownCloud keeps one version every hour; For the first 30 days ownCloud keeps one version every day; After the first 30 days ownCloud keeps one version every week. The versions are adjusted along this pattern every time a new version gets created. Beside that the version app takes care to never use more that 50% of the users currently available free space. If the stored versions exceed this limit ownCloud deletes the oldest versions until it meets the memory usage limit again.