I just started monitoring an Exchange server (SBS 2003) using Zabbix yesterday, and during the night I received several alerts for the Memory Pages per Second indicator acting bursty and jerky:
Link to the full size image: http://i.imgur.com/uAbXz.png
The peek was 3000 pages/sec. I don't know that that Memory Pages/Sec metric means, but Zabbix has triggered an alert for each peek you seeon the image. The trigger is set to if >20 pages/sec, throw an alert.
The problem is not Zabbix here, but Exchange and I would like to know if this is normal, and what could be the source of these jerky bursts.
I can provide some more performance graphs of the server if you wish.