I ran into an issue with our Zabbix server slowly running itself out of space. I just changed from the default 90 and 365 days for history and trends to a much smaller 7 and 90 days respectively, but there's still the issue of all the old data that's already in the DB taking up space as well as the terrible performance of the delete history function in Zabbix because it's executing a delete query for each item. Anyone have any tips/tricks/suggestions for clearing out the DB?