Database Backup 
To perform a backup of your database, you can go to Maintenance > Database Backup.
Warning:
Due to limitations with PHP, backups may not be complete on larger databases. Please ensure that the final line of your backup contains:
 ### VBULLETIN DATABASE DUMP COMPLETED ###
If it does not, we recommend backing up using SSH and mysqldump.
You will be presented with a screen similar to this:

Here you are presented with two methods of backing up:
Note:
At this time, vBulletin does not provide any means to import a backup in the control panel. We recommend using SSH and mysql. If this is not possible, you may try a tool such as phpMyAdmin.
filburt1 20th Apr 2005, 11:06am
You can back up your database via a reliable SSH command-line-based method. The process is outlined in the Moving Servers page:

http://www.vbulletin.com/docs/html/main/moving_servers_backup

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