Redundant database
Since sniffer 10 the voipmonitor has feature which mirrors data from some remote sniffer database to another database. It replicates all partitions from certain date increasingly syncing data to secondary database. You can have unlimited number of slave databases just for offloading or for backup purpose. Here is example of the configuration which will initiate full backup from 2014-06-10 from mysql server on 192.168.0.1 to localhost database creating the whole schema.
[general] sqldriver = mysql mysqlcompress = yes mysqlhost = 127.0.0.1 mysqldb = voipmonitor cdr_partition = yes mysqltable = cdr mysqlusername = root mysqlpassword = neupk,2 database_backup_from_date = 2014-06-10 database_backup_from_mysqlhost = 192.168.0.1 database_backup_from_mysqldb = voipmonitor database_backup_from_mysqlusername = root database_backup_from_mysqlpassword = pass database_backup_pause = 3 database_backup_insert_threads = 3 cleandatabase = 70 cdr_sipport = yes cdr_rtpport = yes