We have hundreds of nodata triggers.

Every time when zabbix recovers from "zabbix database is down". These triggers will send hundreds of Emails and SMSs.

One of the reason we have "zabbix database is down" issue is that we run a daily mysqldump backup at mid night. I reckon the database was not responding during backup.

I don't mind receiving one message "zabbix database is down". But the alerts after the database is recoverd are quite annoying.