Hi all,

I have an odoo13 server on windows, and I backuped (includes filestore) the odoo13 server via the system's backup function and the size of zip file is 413 MB, 

many days ago,  I restored the backup to another odoo13 server on ubuntu 18.04, and repeated  the same operation on the ubuntu odoo13 server, but the size of  zip file is just 9 MB. I upzip the new backup zip file and find it includes ONE file: dump.sql.

so why?
thanks!