A RealTime-Voicemail tricky one

Listen, have you ever ask yourself… how to store voicemail-users on a database (mysql) through realtime, but leaving voicemessages on the file system ??

I have accomplished the scenario in wich voicemail-users resides on the voicemail.conf file, and voicemessages are stored on the mysql table… but how to do the opposite ??

Anyone ???