It can't scale when we are talking 10000's of checks, triggers and hosts. This is why we moved to Zabbix: Number of items monitored: 77342 Number of triggers

It can't scale when we are talking 10000's of checks, triggers and hosts. This is why we moved to Zabbix: Number of items monitored: 77342 Number of triggers enabled: 25405 Try and scale Nagios to those values and let me know how it works. We tried and we let it go a few years ago.