We want to get possibility of filtering objects, which will be exported to file in realtime export mechanism of Zabbix server to to get only necessary objects of zabbix (history,trends, events) selected by host or hostgroup (and item, maybe) using configuration parameters or (best user friendly way) frontend section

Configiration->Export for example, where we can choose host, hostgroup (maybe item including to have maximum flexibility in export, export history, trends and events only for selected item)

This feature will help to avoid high utilization  or perfomance degradation (I/O) of storage system on big Zabbix environments, millions  of strings per second where can be exported .