With calculated items, you can create calculations based on other items. The values will be periodically calculated based on an arithmetical expression and done by the Zabbix server – nothing is performed on Zabbix agents or proxies.
As we have already mentioned earlier, there are new opportunities for mass data collection in the latest Zabbix version – Zabbix 3.4. Now let’s dwell on this functionality in more detail, and in order to make it more clear, we will tell about it in two examples: