XF 2.1 Importing only new posts (Huge migration)

[calopezes]

Mi migration from Vbulletin to Xenforo probably will take more than a week (20.000.000 post). Meanwhile I´ll have 2 servers, one live with VB and another in stage importing.

Is posible to import later only the new post written in VB during the migration? (I´ll close user registration)
Any advice for this kind of migrations?

Thank you in advance.

 

[Mike]

There aren't any options built in to do that. The import is a single pass process.

While 20 million messages will take some time to import, if it is going to take a week, that would make me think that MySQL isn't optimized for the import. You should ensure that you're doing the import on one server (database is local) and that MySQL's InnoDB configuration is fully optimized. As the import is very write heavy, ensuring that you have a fast drive is also very important.