folders

I'm making daily backups of my complete forum every night. Which directories can be safely excluded to minimize the size of the backup? Currently I am excluding these directories: /internal_data/image_cache /internal_data/oembed_cache /internal_data/page_cache /internal_data/temp...

Once installed, please provide desired user groups the permission 'Conversation Folders'. In addition, you may wish to change the maximum allowed number of folders. This is located in the add-on's options page. Features List: Organise your conversations by assigning them to different folders...

I know the official Xenforo install guide tells you to CHMOD 0777 folders data and internal data, but is it just literally those folders? What about the files? Or should we chmod -R 0777 both the folders including files?