I applied a monitor set with following alarm als result.
SNMP Device: N/AMonitor Set: Exchange 2003 Full Monitoring counterType: CounterLog Object Name: MSExchangeIS: VM Total Free BlocksAgent Alarm Time: 22:55:24 16-Feb-11Event Time: 21:55:24 16-Feb-11 UTCLog Value: 235Alarm Operator: UnderAlarm Threshold: 1000 VM Total Free BlocksAlarm Duration: 5 Minute(s)Ticket ID: no ticket assigned
A few client have this alarm.
My question is now:
Too high - the recommendation is that this should never be less than 1. Have a read of the white paper found here - it's all good stuff but pages 47 -50 are relevant to exchange VM counters
Short term you'd resolve this with a reboot. Long term lower load and look at the following KB article to optimize your memory settings.