By default, the smos server makes automatic backups of users' files.
Every hour, by default, the server checks whether any backups need to be made. A backup is made when the latest backup was made more than a day ago.
Administrators can configure a maximum number of backups that any user can have. When this number has been reached, the oldest backups will be deleted. This deletion happens once every 24 hours by default.
Note: When downloading a backup, the files are collected in a zip file, which requires filepaths that are valid on both windows and posix filesystems. Because of this limitation, sometimes the filenames in the resulting archive will be slightly different from the original.