Storage
The Storage node allows you to modify where, and in some cases how, various information is stored.
Here you can set how your email accounts will be stored - either in the integrated file system (in this case they are included in a backup .zip file) or in a database, where all settings (username, pwd, forwarders, etc.) are stored - this is recommended for over 500 accounts.
Settings for load balanced scenario are also managed here.
Figure. Storage management.