All you need to backup, in order to backup FogBugz, is your FogBugz database. Here’s instructions on how to back up that database depending on how you have FogBugz installed and what type of database you are using.
On Demand
If you are using FogBugz On Demand, there is no need for you to back up your database. We are constantly taking snapshots of your database and shipping them to our other data centers in case of a catastrophe. We are also taking nightly backups. You can read more about our FogBugz On Demand Infrastructure on our website. If you still need to grab a backup for testing purposes, or reporting purposes, you can do so by going to Settings->Your FogBugz On Demand Account. You’ll find a link there which allows you to download your database.
Microsoft SQL Server
Microsoft has a knowledge base article on how to back up your SQL Server database. You can find the physical server your database is on by looking under Settings->Site->Database tab in FogBugz.
MySQL
MySQL has a knowledge base article on how to back up your MySQL database. You can find the physical server your database is on by looking under Settings->Site->Database tab in FogBugz.
Access
To make a backup of your Access database, you just need to copy the .mdb file you are using. You can find the physical location of your database by looking under Settings->Site->Database tab in FogBugz.